12960 lines
440 KiB
Ada
12960 lines
440 KiB
Ada
------------------------------------------------------------------------------
|
|
-- --
|
|
-- GNAT COMPILER COMPONENTS --
|
|
-- --
|
|
-- S E M _ P R A G --
|
|
-- --
|
|
-- B o d y --
|
|
-- --
|
|
-- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
|
|
-- --
|
|
-- GNAT is free software; you can redistribute it and/or modify it under --
|
|
-- terms of the GNU General Public License as published by the Free Soft- --
|
|
-- ware Foundation; either version 3, or (at your option) any later ver- --
|
|
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
|
|
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
|
|
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
|
|
-- for more details. You should have received a copy of the GNU General --
|
|
-- Public License distributed with GNAT; see file COPYING3. If not, go to --
|
|
-- http://www.gnu.org/licenses for a complete copy of the license. --
|
|
-- --
|
|
-- GNAT was originally developed by the GNAT team at New York University. --
|
|
-- Extensive contributions were provided by Ada Core Technologies Inc. --
|
|
-- --
|
|
------------------------------------------------------------------------------
|
|
|
|
-- This unit contains the semantic processing for all pragmas, both language
|
|
-- and implementation defined. For most pragmas, the parser only does the
|
|
-- most basic job of checking the syntax, so Sem_Prag also contains the code
|
|
-- to complete the syntax checks. Certain pragmas are handled partially or
|
|
-- completely by the parser (see Par.Prag for further details).
|
|
|
|
with Atree; use Atree;
|
|
with Casing; use Casing;
|
|
with Checks; use Checks;
|
|
with Csets; use Csets;
|
|
with Debug; use Debug;
|
|
with Einfo; use Einfo;
|
|
with Elists; use Elists;
|
|
with Errout; use Errout;
|
|
with Exp_Dist; use Exp_Dist;
|
|
with Lib; use Lib;
|
|
with Lib.Writ; use Lib.Writ;
|
|
with Lib.Xref; use Lib.Xref;
|
|
with Namet.Sp; use Namet.Sp;
|
|
with Nlists; use Nlists;
|
|
with Nmake; use Nmake;
|
|
with Opt; use Opt;
|
|
with Output; use Output;
|
|
with Restrict; use Restrict;
|
|
with Rident; use Rident;
|
|
with Rtsfind; use Rtsfind;
|
|
with Sem; use Sem;
|
|
with Sem_Aux; use Sem_Aux;
|
|
with Sem_Ch3; use Sem_Ch3;
|
|
with Sem_Ch6; use Sem_Ch6;
|
|
with Sem_Ch8; use Sem_Ch8;
|
|
with Sem_Ch12; use Sem_Ch12;
|
|
with Sem_Ch13; use Sem_Ch13;
|
|
with Sem_Dist; use Sem_Dist;
|
|
with Sem_Elim; use Sem_Elim;
|
|
with Sem_Eval; use Sem_Eval;
|
|
with Sem_Intr; use Sem_Intr;
|
|
with Sem_Mech; use Sem_Mech;
|
|
with Sem_Res; use Sem_Res;
|
|
with Sem_Type; use Sem_Type;
|
|
with Sem_Util; use Sem_Util;
|
|
with Sem_VFpt; use Sem_VFpt;
|
|
with Sem_Warn; use Sem_Warn;
|
|
with Stand; use Stand;
|
|
with Sinfo; use Sinfo;
|
|
with Sinfo.CN; use Sinfo.CN;
|
|
with Sinput; use Sinput;
|
|
with Snames; use Snames;
|
|
with Stringt; use Stringt;
|
|
with Stylesw; use Stylesw;
|
|
with Table;
|
|
with Targparm; use Targparm;
|
|
with Tbuild; use Tbuild;
|
|
with Ttypes;
|
|
with Uintp; use Uintp;
|
|
with Uname; use Uname;
|
|
with Urealp; use Urealp;
|
|
with Validsw; use Validsw;
|
|
|
|
package body Sem_Prag is
|
|
|
|
----------------------------------------------
|
|
-- Common Handling of Import-Export Pragmas --
|
|
----------------------------------------------
|
|
|
|
-- In the following section, a number of Import_xxx and Export_xxx
|
|
-- pragmas are defined by GNAT. These are compatible with the DEC
|
|
-- pragmas of the same name, and all have the following common
|
|
-- form and processing:
|
|
|
|
-- pragma Export_xxx
|
|
-- [Internal =>] LOCAL_NAME
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, other optional parameters ]);
|
|
|
|
-- pragma Import_xxx
|
|
-- [Internal =>] LOCAL_NAME
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, other optional parameters ]);
|
|
|
|
-- EXTERNAL_SYMBOL ::=
|
|
-- IDENTIFIER
|
|
-- | static_string_EXPRESSION
|
|
|
|
-- The internal LOCAL_NAME designates the entity that is imported or
|
|
-- exported, and must refer to an entity in the current declarative
|
|
-- part (as required by the rules for LOCAL_NAME).
|
|
|
|
-- The external linker name is designated by the External parameter if
|
|
-- given, or the Internal parameter if not (if there is no External
|
|
-- parameter, the External parameter is a copy of the Internal name).
|
|
|
|
-- If the External parameter is given as a string, then this string is
|
|
-- treated as an external name (exactly as though it had been given as an
|
|
-- External_Name parameter for a normal Import pragma).
|
|
|
|
-- If the External parameter is given as an identifier (or there is no
|
|
-- External parameter, so that the Internal identifier is used), then
|
|
-- the external name is the characters of the identifier, translated
|
|
-- to all upper case letters for OpenVMS versions of GNAT, and to all
|
|
-- lower case letters for all other versions
|
|
|
|
-- Note: the external name specified or implied by any of these special
|
|
-- Import_xxx or Export_xxx pragmas override an external or link name
|
|
-- specified in a previous Import or Export pragma.
|
|
|
|
-- Note: these and all other DEC-compatible GNAT pragmas allow full use of
|
|
-- named notation, following the standard rules for subprogram calls, i.e.
|
|
-- parameters can be given in any order if named notation is used, and
|
|
-- positional and named notation can be mixed, subject to the rule that all
|
|
-- positional parameters must appear first.
|
|
|
|
-- Note: All these pragmas are implemented exactly following the DEC design
|
|
-- and implementation and are intended to be fully compatible with the use
|
|
-- of these pragmas in the DEC Ada compiler.
|
|
|
|
--------------------------------------------
|
|
-- Checking for Duplicated External Names --
|
|
--------------------------------------------
|
|
|
|
-- It is suspicious if two separate Export pragmas use the same external
|
|
-- name. The following table is used to diagnose this situation so that
|
|
-- an appropriate warning can be issued.
|
|
|
|
-- The Node_Id stored is for the N_String_Literal node created to hold
|
|
-- the value of the external name. The Sloc of this node is used to
|
|
-- cross-reference the location of the duplication.
|
|
|
|
package Externals is new Table.Table (
|
|
Table_Component_Type => Node_Id,
|
|
Table_Index_Type => Int,
|
|
Table_Low_Bound => 0,
|
|
Table_Initial => 100,
|
|
Table_Increment => 100,
|
|
Table_Name => "Name_Externals");
|
|
|
|
-------------------------------------
|
|
-- Local Subprograms and Variables --
|
|
-------------------------------------
|
|
|
|
function Adjust_External_Name_Case (N : Node_Id) return Node_Id;
|
|
-- This routine is used for possible casing adjustment of an explicit
|
|
-- external name supplied as a string literal (the node N), according to
|
|
-- the casing requirement of Opt.External_Name_Casing. If this is set to
|
|
-- As_Is, then the string literal is returned unchanged, but if it is set
|
|
-- to Uppercase or Lowercase, then a new string literal with appropriate
|
|
-- casing is constructed.
|
|
|
|
function Get_Base_Subprogram (Def_Id : Entity_Id) return Entity_Id;
|
|
-- If Def_Id refers to a renamed subprogram, then the base subprogram (the
|
|
-- original one, following the renaming chain) is returned. Otherwise the
|
|
-- entity is returned unchanged. Should be in Einfo???
|
|
|
|
function Get_Pragma_Arg (Arg : Node_Id) return Node_Id;
|
|
-- All the routines that check pragma arguments take either a pragma
|
|
-- argument association (in which case the expression of the argument
|
|
-- association is checked), or the expression directly. The function
|
|
-- Get_Pragma_Arg is a utility used to deal with these two cases. If Arg
|
|
-- is a pragma argument association node, then its expression is returned,
|
|
-- otherwise Arg is returned unchanged.
|
|
|
|
procedure rv;
|
|
-- This is a dummy function called by the processing for pragma Reviewable.
|
|
-- It is there for assisting front end debugging. By placing a Reviewable
|
|
-- pragma in the source program, a breakpoint on rv catches this place in
|
|
-- the source, allowing convenient stepping to the point of interest.
|
|
|
|
procedure Set_Unit_Name (N : Node_Id; With_Item : Node_Id);
|
|
-- Place semantic information on the argument of an Elaborate/Elaborate_All
|
|
-- pragma. Entity name for unit and its parents is taken from item in
|
|
-- previous with_clause that mentions the unit.
|
|
|
|
-------------------------------
|
|
-- Adjust_External_Name_Case --
|
|
-------------------------------
|
|
|
|
function Adjust_External_Name_Case (N : Node_Id) return Node_Id is
|
|
CC : Char_Code;
|
|
|
|
begin
|
|
-- Adjust case of literal if required
|
|
|
|
if Opt.External_Name_Exp_Casing = As_Is then
|
|
return N;
|
|
|
|
else
|
|
-- Copy existing string
|
|
|
|
Start_String;
|
|
|
|
-- Set proper casing
|
|
|
|
for J in 1 .. String_Length (Strval (N)) loop
|
|
CC := Get_String_Char (Strval (N), J);
|
|
|
|
if Opt.External_Name_Exp_Casing = Uppercase
|
|
and then CC >= Get_Char_Code ('a')
|
|
and then CC <= Get_Char_Code ('z')
|
|
then
|
|
Store_String_Char (CC - 32);
|
|
|
|
elsif Opt.External_Name_Exp_Casing = Lowercase
|
|
and then CC >= Get_Char_Code ('A')
|
|
and then CC <= Get_Char_Code ('Z')
|
|
then
|
|
Store_String_Char (CC + 32);
|
|
|
|
else
|
|
Store_String_Char (CC);
|
|
end if;
|
|
end loop;
|
|
|
|
return
|
|
Make_String_Literal (Sloc (N),
|
|
Strval => End_String);
|
|
end if;
|
|
end Adjust_External_Name_Case;
|
|
|
|
------------------------------
|
|
-- Analyze_PPC_In_Decl_Part --
|
|
------------------------------
|
|
|
|
procedure Analyze_PPC_In_Decl_Part (N : Node_Id; S : Entity_Id) is
|
|
Arg1 : constant Node_Id :=
|
|
First (Pragma_Argument_Associations (N));
|
|
Arg2 : constant Node_Id := Next (Arg1);
|
|
|
|
begin
|
|
-- Install formals and push subprogram spec onto scope stack so that we
|
|
-- can see the formals from the pragma.
|
|
|
|
Install_Formals (S);
|
|
Push_Scope (S);
|
|
|
|
-- Preanalyze the boolean expression, we treat this as a spec expression
|
|
-- (i.e. similar to a default expression).
|
|
|
|
Preanalyze_Spec_Expression
|
|
(Get_Pragma_Arg (Arg1), Standard_Boolean);
|
|
|
|
-- If there is a message argument, analyze it the same way
|
|
|
|
if Present (Arg2) then
|
|
Preanalyze_Spec_Expression
|
|
(Get_Pragma_Arg (Arg2), Standard_String);
|
|
end if;
|
|
|
|
-- Remove the subprogram from the scope stack now that the pre-analysis
|
|
-- of the precondition/postcondition is done.
|
|
|
|
End_Scope;
|
|
end Analyze_PPC_In_Decl_Part;
|
|
|
|
--------------------
|
|
-- Analyze_Pragma --
|
|
--------------------
|
|
|
|
procedure Analyze_Pragma (N : Node_Id) is
|
|
Loc : constant Source_Ptr := Sloc (N);
|
|
Pname : constant Name_Id := Pragma_Name (N);
|
|
Prag_Id : Pragma_Id;
|
|
|
|
Pragma_Exit : exception;
|
|
-- This exception is used to exit pragma processing completely. It is
|
|
-- used when an error is detected, and no further processing is
|
|
-- required. It is also used if an earlier error has left the tree in
|
|
-- a state where the pragma should not be processed.
|
|
|
|
Arg_Count : Nat;
|
|
-- Number of pragma argument associations
|
|
|
|
Arg1 : Node_Id;
|
|
Arg2 : Node_Id;
|
|
Arg3 : Node_Id;
|
|
Arg4 : Node_Id;
|
|
-- First four pragma arguments (pragma argument association nodes, or
|
|
-- Empty if the corresponding argument does not exist).
|
|
|
|
type Name_List is array (Natural range <>) of Name_Id;
|
|
type Args_List is array (Natural range <>) of Node_Id;
|
|
-- Types used for arguments to Check_Arg_Order and Gather_Associations
|
|
|
|
procedure Ada_2005_Pragma;
|
|
-- Called for pragmas defined in Ada 2005, that are not in Ada 95. In
|
|
-- Ada 95 mode, these are implementation defined pragmas, so should be
|
|
-- caught by the No_Implementation_Pragmas restriction
|
|
|
|
procedure Check_Ada_83_Warning;
|
|
-- Issues a warning message for the current pragma if operating in Ada
|
|
-- 83 mode (used for language pragmas that are not a standard part of
|
|
-- Ada 83). This procedure does not raise Error_Pragma. Also notes use
|
|
-- of 95 pragma.
|
|
|
|
procedure Check_Arg_Count (Required : Nat);
|
|
-- Check argument count for pragma is equal to given parameter. If not,
|
|
-- then issue an error message and raise Pragma_Exit.
|
|
|
|
-- Note: all routines whose name is Check_Arg_Is_xxx take an argument
|
|
-- Arg which can either be a pragma argument association, in which case
|
|
-- the check is applied to the expression of the association or an
|
|
-- expression directly.
|
|
|
|
procedure Check_Arg_Is_External_Name (Arg : Node_Id);
|
|
-- Check that an argument has the right form for an EXTERNAL_NAME
|
|
-- parameter of an extended import/export pragma. The rule is that the
|
|
-- name must be an identifier or string literal (in Ada 83 mode) or a
|
|
-- static string expression (in Ada 95 mode).
|
|
|
|
procedure Check_Arg_Is_Identifier (Arg : Node_Id);
|
|
-- Check the specified argument Arg to make sure that it is an
|
|
-- identifier. If not give error and raise Pragma_Exit.
|
|
|
|
procedure Check_Arg_Is_Integer_Literal (Arg : Node_Id);
|
|
-- Check the specified argument Arg to make sure that it is an integer
|
|
-- literal. If not give error and raise Pragma_Exit.
|
|
|
|
procedure Check_Arg_Is_Library_Level_Local_Name (Arg : Node_Id);
|
|
-- Check the specified argument Arg to make sure that it has the proper
|
|
-- syntactic form for a local name and meets the semantic requirements
|
|
-- for a local name. The local name is analyzed as part of the
|
|
-- processing for this call. In addition, the local name is required
|
|
-- to represent an entity at the library level.
|
|
|
|
procedure Check_Arg_Is_Local_Name (Arg : Node_Id);
|
|
-- Check the specified argument Arg to make sure that it has the proper
|
|
-- syntactic form for a local name and meets the semantic requirements
|
|
-- for a local name. The local name is analyzed as part of the
|
|
-- processing for this call.
|
|
|
|
procedure Check_Arg_Is_Locking_Policy (Arg : Node_Id);
|
|
-- Check the specified argument Arg to make sure that it is a valid
|
|
-- locking policy name. If not give error and raise Pragma_Exit.
|
|
|
|
procedure Check_Arg_Is_One_Of (Arg : Node_Id; N1, N2 : Name_Id);
|
|
procedure Check_Arg_Is_One_Of (Arg : Node_Id; N1, N2, N3 : Name_Id);
|
|
procedure Check_Arg_Is_One_Of (Arg : Node_Id; N1, N2, N3, N4 : Name_Id);
|
|
-- Check the specified argument Arg to make sure that it is an
|
|
-- identifier whose name matches either N1 or N2 (or N3 if present).
|
|
-- If not then give error and raise Pragma_Exit.
|
|
|
|
procedure Check_Arg_Is_Queuing_Policy (Arg : Node_Id);
|
|
-- Check the specified argument Arg to make sure that it is a valid
|
|
-- queuing policy name. If not give error and raise Pragma_Exit.
|
|
|
|
procedure Check_Arg_Is_Static_Expression
|
|
(Arg : Node_Id;
|
|
Typ : Entity_Id := Empty);
|
|
-- Check the specified argument Arg to make sure that it is a static
|
|
-- expression of the given type (i.e. it will be analyzed and resolved
|
|
-- using this type, which can be any valid argument to Resolve, e.g.
|
|
-- Any_Integer is OK). If not, given error and raise Pragma_Exit. If
|
|
-- Typ is left Empty, then any static expression is allowed.
|
|
|
|
procedure Check_Arg_Is_String_Literal (Arg : Node_Id);
|
|
-- Check the specified argument Arg to make sure that it is a string
|
|
-- literal. If not give error and raise Pragma_Exit
|
|
|
|
procedure Check_Arg_Is_Task_Dispatching_Policy (Arg : Node_Id);
|
|
-- Check the specified argument Arg to make sure that it is a valid task
|
|
-- dispatching policy name. If not give error and raise Pragma_Exit.
|
|
|
|
procedure Check_Arg_Order (Names : Name_List);
|
|
-- Checks for an instance of two arguments with identifiers for the
|
|
-- current pragma which are not in the sequence indicated by Names,
|
|
-- and if so, generates a fatal message about bad order of arguments.
|
|
|
|
procedure Check_At_Least_N_Arguments (N : Nat);
|
|
-- Check there are at least N arguments present
|
|
|
|
procedure Check_At_Most_N_Arguments (N : Nat);
|
|
-- Check there are no more than N arguments present
|
|
|
|
procedure Check_Component (Comp : Node_Id);
|
|
-- Examine Unchecked_Union component for correct use of per-object
|
|
-- constrained subtypes, and for restrictions on finalizable components.
|
|
|
|
procedure Check_Duplicated_Export_Name (Nam : Node_Id);
|
|
-- Nam is an N_String_Literal node containing the external name set by
|
|
-- an Import or Export pragma (or extended Import or Export pragma).
|
|
-- This procedure checks for possible duplications if this is the export
|
|
-- case, and if found, issues an appropriate error message.
|
|
|
|
procedure Check_First_Subtype (Arg : Node_Id);
|
|
-- Checks that Arg, whose expression is an entity name referencing a
|
|
-- subtype, does not reference a type that is not a first subtype.
|
|
|
|
procedure Check_In_Main_Program;
|
|
-- Common checks for pragmas that appear within a main program
|
|
-- (Priority, Main_Storage, Time_Slice, Relative_Deadline).
|
|
|
|
procedure Check_Interrupt_Or_Attach_Handler;
|
|
-- Common processing for first argument of pragma Interrupt_Handler or
|
|
-- pragma Attach_Handler.
|
|
|
|
procedure Check_Is_In_Decl_Part_Or_Package_Spec;
|
|
-- Check that pragma appears in a declarative part, or in a package
|
|
-- specification, i.e. that it does not occur in a statement sequence
|
|
-- in a body.
|
|
|
|
procedure Check_No_Identifier (Arg : Node_Id);
|
|
-- Checks that the given argument does not have an identifier. If
|
|
-- an identifier is present, then an error message is issued, and
|
|
-- Pragma_Exit is raised.
|
|
|
|
procedure Check_No_Identifiers;
|
|
-- Checks that none of the arguments to the pragma has an identifier.
|
|
-- If any argument has an identifier, then an error message is issued,
|
|
-- and Pragma_Exit is raised.
|
|
|
|
procedure Check_Optional_Identifier (Arg : Node_Id; Id : Name_Id);
|
|
-- Checks if the given argument has an identifier, and if so, requires
|
|
-- it to match the given identifier name. If there is a non-matching
|
|
-- identifier, then an error message is given and Error_Pragmas raised.
|
|
|
|
procedure Check_Optional_Identifier (Arg : Node_Id; Id : String);
|
|
-- Checks if the given argument has an identifier, and if so, requires
|
|
-- it to match the given identifier name. If there is a non-matching
|
|
-- identifier, then an error message is given and Error_Pragmas raised.
|
|
-- In this version of the procedure, the identifier name is given as
|
|
-- a string with lower case letters.
|
|
|
|
procedure Check_Precondition_Postcondition (In_Body : out Boolean);
|
|
-- Called to process a precondition or postcondition pragma. There are
|
|
-- three cases:
|
|
--
|
|
-- The pragma appears after a subprogram spec
|
|
--
|
|
-- If the corresponding check is not enabled, the pragma is analyzed
|
|
-- but otherwise ignored and control returns with In_Body set False.
|
|
--
|
|
-- If the check is enabled, then the first step is to analyze the
|
|
-- pragma, but this is skipped if the subprogram spec appears within
|
|
-- a package specification (because this is the case where we delay
|
|
-- analysis till the end of the spec). Then (whether or not it was
|
|
-- analyzed), the pragma is chained to the subprogram in question
|
|
-- (using Spec_PPC_List and Next_Pragma) and control returns to the
|
|
-- caller with In_Body set False.
|
|
--
|
|
-- The pragma appears at the start of subprogram body declarations
|
|
--
|
|
-- In this case an immediate return to the caller is made with
|
|
-- In_Body set True, and the pragma is NOT analyzed.
|
|
--
|
|
-- In all other cases, an error message for bad placement is given
|
|
|
|
procedure Check_Static_Constraint (Constr : Node_Id);
|
|
-- Constr is a constraint from an N_Subtype_Indication node from a
|
|
-- component constraint in an Unchecked_Union type. This routine checks
|
|
-- that the constraint is static as required by the restrictions for
|
|
-- Unchecked_Union.
|
|
|
|
procedure Check_Valid_Configuration_Pragma;
|
|
-- Legality checks for placement of a configuration pragma
|
|
|
|
procedure Check_Valid_Library_Unit_Pragma;
|
|
-- Legality checks for library unit pragmas. A special case arises for
|
|
-- pragmas in generic instances that come from copies of the original
|
|
-- library unit pragmas in the generic templates. In the case of other
|
|
-- than library level instantiations these can appear in contexts which
|
|
-- would normally be invalid (they only apply to the original template
|
|
-- and to library level instantiations), and they are simply ignored,
|
|
-- which is implemented by rewriting them as null statements.
|
|
|
|
procedure Check_Variant (Variant : Node_Id);
|
|
-- Check Unchecked_Union variant for lack of nested variants and
|
|
-- presence of at least one component.
|
|
|
|
procedure Error_Pragma (Msg : String);
|
|
pragma No_Return (Error_Pragma);
|
|
-- Outputs error message for current pragma. The message contains a %
|
|
-- that will be replaced with the pragma name, and the flag is placed
|
|
-- on the pragma itself. Pragma_Exit is then raised.
|
|
|
|
procedure Error_Pragma_Arg (Msg : String; Arg : Node_Id);
|
|
pragma No_Return (Error_Pragma_Arg);
|
|
-- Outputs error message for current pragma. The message may contain
|
|
-- a % that will be replaced with the pragma name. The parameter Arg
|
|
-- may either be a pragma argument association, in which case the flag
|
|
-- is placed on the expression of this association, or an expression,
|
|
-- in which case the flag is placed directly on the expression. The
|
|
-- message is placed using Error_Msg_N, so the message may also contain
|
|
-- an & insertion character which will reference the given Arg value.
|
|
-- After placing the message, Pragma_Exit is raised.
|
|
|
|
procedure Error_Pragma_Arg (Msg1, Msg2 : String; Arg : Node_Id);
|
|
pragma No_Return (Error_Pragma_Arg);
|
|
-- Similar to above form of Error_Pragma_Arg except that two messages
|
|
-- are provided, the second is a continuation comment starting with \.
|
|
|
|
procedure Error_Pragma_Arg_Ident (Msg : String; Arg : Node_Id);
|
|
pragma No_Return (Error_Pragma_Arg_Ident);
|
|
-- Outputs error message for current pragma. The message may contain
|
|
-- a % that will be replaced with the pragma name. The parameter Arg
|
|
-- must be a pragma argument association with a non-empty identifier
|
|
-- (i.e. its Chars field must be set), and the error message is placed
|
|
-- on the identifier. The message is placed using Error_Msg_N so
|
|
-- the message may also contain an & insertion character which will
|
|
-- reference the identifier. After placing the message, Pragma_Exit
|
|
-- is raised.
|
|
|
|
procedure Error_Pragma_Ref (Msg : String; Ref : Entity_Id);
|
|
pragma No_Return (Error_Pragma_Ref);
|
|
-- Outputs error message for current pragma. The message may contain
|
|
-- a % that will be replaced with the pragma name. The parameter Ref
|
|
-- must be an entity whose name can be referenced by & and sloc by #.
|
|
-- After placing the message, Pragma_Exit is raised.
|
|
|
|
function Find_Lib_Unit_Name return Entity_Id;
|
|
-- Used for a library unit pragma to find the entity to which the
|
|
-- library unit pragma applies, returns the entity found.
|
|
|
|
procedure Find_Program_Unit_Name (Id : Node_Id);
|
|
-- If the pragma is a compilation unit pragma, the id must denote the
|
|
-- compilation unit in the same compilation, and the pragma must appear
|
|
-- in the list of preceding or trailing pragmas. If it is a program
|
|
-- unit pragma that is not a compilation unit pragma, then the
|
|
-- identifier must be visible.
|
|
|
|
function Find_Unique_Parameterless_Procedure
|
|
(Name : Entity_Id;
|
|
Arg : Node_Id) return Entity_Id;
|
|
-- Used for a procedure pragma to find the unique parameterless
|
|
-- procedure identified by Name, returns it if it exists, otherwise
|
|
-- errors out and uses Arg as the pragma argument for the message.
|
|
|
|
procedure Gather_Associations
|
|
(Names : Name_List;
|
|
Args : out Args_List);
|
|
-- This procedure is used to gather the arguments for a pragma that
|
|
-- permits arbitrary ordering of parameters using the normal rules
|
|
-- for named and positional parameters. The Names argument is a list
|
|
-- of Name_Id values that corresponds to the allowed pragma argument
|
|
-- association identifiers in order. The result returned in Args is
|
|
-- a list of corresponding expressions that are the pragma arguments.
|
|
-- Note that this is a list of expressions, not of pragma argument
|
|
-- associations (Gather_Associations has completely checked all the
|
|
-- optional identifiers when it returns). An entry in Args is Empty
|
|
-- on return if the corresponding argument is not present.
|
|
|
|
procedure GNAT_Pragma;
|
|
-- Called for all GNAT defined pragmas to check the relevant restriction
|
|
-- (No_Implementation_Pragmas).
|
|
|
|
function Is_Before_First_Decl
|
|
(Pragma_Node : Node_Id;
|
|
Decls : List_Id) return Boolean;
|
|
-- Return True if Pragma_Node is before the first declarative item in
|
|
-- Decls where Decls is the list of declarative items.
|
|
|
|
function Is_Configuration_Pragma return Boolean;
|
|
-- Determines if the placement of the current pragma is appropriate
|
|
-- for a configuration pragma.
|
|
|
|
function Is_In_Context_Clause return Boolean;
|
|
-- Returns True if pragma appears within the context clause of a unit,
|
|
-- and False for any other placement (does not generate any messages).
|
|
|
|
function Is_Static_String_Expression (Arg : Node_Id) return Boolean;
|
|
-- Analyzes the argument, and determines if it is a static string
|
|
-- expression, returns True if so, False if non-static or not String.
|
|
|
|
procedure Pragma_Misplaced;
|
|
pragma No_Return (Pragma_Misplaced);
|
|
-- Issue fatal error message for misplaced pragma
|
|
|
|
procedure Process_Atomic_Shared_Volatile;
|
|
-- Common processing for pragmas Atomic, Shared, Volatile. Note that
|
|
-- Shared is an obsolete Ada 83 pragma, treated as being identical
|
|
-- in effect to pragma Atomic.
|
|
|
|
procedure Process_Compile_Time_Warning_Or_Error;
|
|
-- Common processing for Compile_Time_Error and Compile_Time_Warning
|
|
|
|
procedure Process_Convention
|
|
(C : out Convention_Id;
|
|
Ent : out Entity_Id);
|
|
-- Common processing for Convention, Interface, Import and Export.
|
|
-- Checks first two arguments of pragma, and sets the appropriate
|
|
-- convention value in the specified entity or entities. On return
|
|
-- C is the convention, Ent is the referenced entity.
|
|
|
|
procedure Process_Extended_Import_Export_Exception_Pragma
|
|
(Arg_Internal : Node_Id;
|
|
Arg_External : Node_Id;
|
|
Arg_Form : Node_Id;
|
|
Arg_Code : Node_Id);
|
|
-- Common processing for the pragmas Import/Export_Exception. The three
|
|
-- arguments correspond to the three named parameters of the pragma. An
|
|
-- argument is empty if the corresponding parameter is not present in
|
|
-- the pragma.
|
|
|
|
procedure Process_Extended_Import_Export_Object_Pragma
|
|
(Arg_Internal : Node_Id;
|
|
Arg_External : Node_Id;
|
|
Arg_Size : Node_Id);
|
|
-- Common processing for the pragmas Import/Export_Object. The three
|
|
-- arguments correspond to the three named parameters of the pragmas. An
|
|
-- argument is empty if the corresponding parameter is not present in
|
|
-- the pragma.
|
|
|
|
procedure Process_Extended_Import_Export_Internal_Arg
|
|
(Arg_Internal : Node_Id := Empty);
|
|
-- Common processing for all extended Import and Export pragmas. The
|
|
-- argument is the pragma parameter for the Internal argument. If
|
|
-- Arg_Internal is empty or inappropriate, an error message is posted.
|
|
-- Otherwise, on normal return, the Entity_Field of Arg_Internal is
|
|
-- set to identify the referenced entity.
|
|
|
|
procedure Process_Extended_Import_Export_Subprogram_Pragma
|
|
(Arg_Internal : Node_Id;
|
|
Arg_External : Node_Id;
|
|
Arg_Parameter_Types : Node_Id;
|
|
Arg_Result_Type : Node_Id := Empty;
|
|
Arg_Mechanism : Node_Id;
|
|
Arg_Result_Mechanism : Node_Id := Empty;
|
|
Arg_First_Optional_Parameter : Node_Id := Empty);
|
|
-- Common processing for all extended Import and Export pragmas applying
|
|
-- to subprograms. The caller omits any arguments that do not apply to
|
|
-- the pragma in question (for example, Arg_Result_Type can be non-Empty
|
|
-- only in the Import_Function and Export_Function cases). The argument
|
|
-- names correspond to the allowed pragma association identifiers.
|
|
|
|
procedure Process_Generic_List;
|
|
-- Common processing for Share_Generic and Inline_Generic
|
|
|
|
procedure Process_Import_Or_Interface;
|
|
-- Common processing for Import of Interface
|
|
|
|
procedure Process_Inline (Active : Boolean);
|
|
-- Common processing for Inline and Inline_Always. The parameter
|
|
-- indicates if the inline pragma is active, i.e. if it should actually
|
|
-- cause inlining to occur.
|
|
|
|
procedure Process_Interface_Name
|
|
(Subprogram_Def : Entity_Id;
|
|
Ext_Arg : Node_Id;
|
|
Link_Arg : Node_Id);
|
|
-- Given the last two arguments of pragma Import, pragma Export, or
|
|
-- pragma Interface_Name, performs validity checks and sets the
|
|
-- Interface_Name field of the given subprogram entity to the
|
|
-- appropriate external or link name, depending on the arguments given.
|
|
-- Ext_Arg is always present, but Link_Arg may be missing. Note that
|
|
-- Ext_Arg may represent the Link_Name if Link_Arg is missing, and
|
|
-- appropriate named notation is used for Ext_Arg. If neither Ext_Arg
|
|
-- nor Link_Arg is present, the interface name is set to the default
|
|
-- from the subprogram name.
|
|
|
|
procedure Process_Interrupt_Or_Attach_Handler;
|
|
-- Common processing for Interrupt and Attach_Handler pragmas
|
|
|
|
procedure Process_Restrictions_Or_Restriction_Warnings (Warn : Boolean);
|
|
-- Common processing for Restrictions and Restriction_Warnings pragmas.
|
|
-- Warn is True for Restriction_Warnings, or for Restrictions if the
|
|
-- flag Treat_Restrictions_As_Warnings is set, and False if this flag
|
|
-- is not set in the Restrictions case.
|
|
|
|
procedure Process_Suppress_Unsuppress (Suppress_Case : Boolean);
|
|
-- Common processing for Suppress and Unsuppress. The boolean parameter
|
|
-- Suppress_Case is True for the Suppress case, and False for the
|
|
-- Unsuppress case.
|
|
|
|
procedure Set_Exported (E : Entity_Id; Arg : Node_Id);
|
|
-- This procedure sets the Is_Exported flag for the given entity,
|
|
-- checking that the entity was not previously imported. Arg is
|
|
-- the argument that specified the entity. A check is also made
|
|
-- for exporting inappropriate entities.
|
|
|
|
procedure Set_Extended_Import_Export_External_Name
|
|
(Internal_Ent : Entity_Id;
|
|
Arg_External : Node_Id);
|
|
-- Common processing for all extended import export pragmas. The first
|
|
-- argument, Internal_Ent, is the internal entity, which has already
|
|
-- been checked for validity by the caller. Arg_External is from the
|
|
-- Import or Export pragma, and may be null if no External parameter
|
|
-- was present. If Arg_External is present and is a non-null string
|
|
-- (a null string is treated as the default), then the Interface_Name
|
|
-- field of Internal_Ent is set appropriately.
|
|
|
|
procedure Set_Imported (E : Entity_Id);
|
|
-- This procedure sets the Is_Imported flag for the given entity,
|
|
-- checking that it is not previously exported or imported.
|
|
|
|
procedure Set_Mechanism_Value (Ent : Entity_Id; Mech_Name : Node_Id);
|
|
-- Mech is a parameter passing mechanism (see Import_Function syntax
|
|
-- for MECHANISM_NAME). This routine checks that the mechanism argument
|
|
-- has the right form, and if not issues an error message. If the
|
|
-- argument has the right form then the Mechanism field of Ent is
|
|
-- set appropriately.
|
|
|
|
procedure Set_Ravenscar_Profile (N : Node_Id);
|
|
-- Activate the set of configuration pragmas and restrictions that make
|
|
-- up the Ravenscar Profile. N is the corresponding pragma node, which
|
|
-- is used for error messages on any constructs that violate the
|
|
-- profile.
|
|
|
|
---------------------
|
|
-- Ada_2005_Pragma --
|
|
---------------------
|
|
|
|
procedure Ada_2005_Pragma is
|
|
begin
|
|
if Ada_Version <= Ada_95 then
|
|
Check_Restriction (No_Implementation_Pragmas, N);
|
|
end if;
|
|
end Ada_2005_Pragma;
|
|
|
|
--------------------------
|
|
-- Check_Ada_83_Warning --
|
|
--------------------------
|
|
|
|
procedure Check_Ada_83_Warning is
|
|
begin
|
|
if Ada_Version = Ada_83 and then Comes_From_Source (N) then
|
|
Error_Msg_N ("(Ada 83) pragma& is non-standard?", N);
|
|
end if;
|
|
end Check_Ada_83_Warning;
|
|
|
|
---------------------
|
|
-- Check_Arg_Count --
|
|
---------------------
|
|
|
|
procedure Check_Arg_Count (Required : Nat) is
|
|
begin
|
|
if Arg_Count /= Required then
|
|
Error_Pragma ("wrong number of arguments for pragma%");
|
|
end if;
|
|
end Check_Arg_Count;
|
|
|
|
--------------------------------
|
|
-- Check_Arg_Is_External_Name --
|
|
--------------------------------
|
|
|
|
procedure Check_Arg_Is_External_Name (Arg : Node_Id) is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
|
|
begin
|
|
if Nkind (Argx) = N_Identifier then
|
|
return;
|
|
|
|
else
|
|
Analyze_And_Resolve (Argx, Standard_String);
|
|
|
|
if Is_OK_Static_Expression (Argx) then
|
|
return;
|
|
|
|
elsif Etype (Argx) = Any_Type then
|
|
raise Pragma_Exit;
|
|
|
|
-- An interesting special case, if we have a string literal and
|
|
-- we are in Ada 83 mode, then we allow it even though it will
|
|
-- not be flagged as static. This allows expected Ada 83 mode
|
|
-- use of external names which are string literals, even though
|
|
-- technically these are not static in Ada 83.
|
|
|
|
elsif Ada_Version = Ada_83
|
|
and then Nkind (Argx) = N_String_Literal
|
|
then
|
|
return;
|
|
|
|
-- Static expression that raises Constraint_Error. This has
|
|
-- already been flagged, so just exit from pragma processing.
|
|
|
|
elsif Is_Static_Expression (Argx) then
|
|
raise Pragma_Exit;
|
|
|
|
-- Here we have a real error (non-static expression)
|
|
|
|
else
|
|
Error_Msg_Name_1 := Pname;
|
|
Flag_Non_Static_Expr
|
|
("argument for pragma% must be a identifier or " &
|
|
"static string expression!", Argx);
|
|
raise Pragma_Exit;
|
|
end if;
|
|
end if;
|
|
end Check_Arg_Is_External_Name;
|
|
|
|
-----------------------------
|
|
-- Check_Arg_Is_Identifier --
|
|
-----------------------------
|
|
|
|
procedure Check_Arg_Is_Identifier (Arg : Node_Id) is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
begin
|
|
if Nkind (Argx) /= N_Identifier then
|
|
Error_Pragma_Arg
|
|
("argument for pragma% must be identifier", Argx);
|
|
end if;
|
|
end Check_Arg_Is_Identifier;
|
|
|
|
----------------------------------
|
|
-- Check_Arg_Is_Integer_Literal --
|
|
----------------------------------
|
|
|
|
procedure Check_Arg_Is_Integer_Literal (Arg : Node_Id) is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
begin
|
|
if Nkind (Argx) /= N_Integer_Literal then
|
|
Error_Pragma_Arg
|
|
("argument for pragma% must be integer literal", Argx);
|
|
end if;
|
|
end Check_Arg_Is_Integer_Literal;
|
|
|
|
-------------------------------------------
|
|
-- Check_Arg_Is_Library_Level_Local_Name --
|
|
-------------------------------------------
|
|
|
|
-- LOCAL_NAME ::=
|
|
-- DIRECT_NAME
|
|
-- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
|
|
-- | library_unit_NAME
|
|
|
|
procedure Check_Arg_Is_Library_Level_Local_Name (Arg : Node_Id) is
|
|
begin
|
|
Check_Arg_Is_Local_Name (Arg);
|
|
|
|
if not Is_Library_Level_Entity (Entity (Expression (Arg)))
|
|
and then Comes_From_Source (N)
|
|
then
|
|
Error_Pragma_Arg
|
|
("argument for pragma% must be library level entity", Arg);
|
|
end if;
|
|
end Check_Arg_Is_Library_Level_Local_Name;
|
|
|
|
-----------------------------
|
|
-- Check_Arg_Is_Local_Name --
|
|
-----------------------------
|
|
|
|
-- LOCAL_NAME ::=
|
|
-- DIRECT_NAME
|
|
-- | DIRECT_NAME'ATTRIBUTE_DESIGNATOR
|
|
-- | library_unit_NAME
|
|
|
|
procedure Check_Arg_Is_Local_Name (Arg : Node_Id) is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
|
|
begin
|
|
Analyze (Argx);
|
|
|
|
if Nkind (Argx) not in N_Direct_Name
|
|
and then (Nkind (Argx) /= N_Attribute_Reference
|
|
or else Present (Expressions (Argx))
|
|
or else Nkind (Prefix (Argx)) /= N_Identifier)
|
|
and then (not Is_Entity_Name (Argx)
|
|
or else not Is_Compilation_Unit (Entity (Argx)))
|
|
then
|
|
Error_Pragma_Arg ("argument for pragma% must be local name", Argx);
|
|
end if;
|
|
|
|
if Is_Entity_Name (Argx)
|
|
and then Scope (Entity (Argx)) /= Current_Scope
|
|
then
|
|
Error_Pragma_Arg
|
|
("pragma% argument must be in same declarative part", Arg);
|
|
end if;
|
|
end Check_Arg_Is_Local_Name;
|
|
|
|
---------------------------------
|
|
-- Check_Arg_Is_Locking_Policy --
|
|
---------------------------------
|
|
|
|
procedure Check_Arg_Is_Locking_Policy (Arg : Node_Id) is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
|
|
begin
|
|
Check_Arg_Is_Identifier (Argx);
|
|
|
|
if not Is_Locking_Policy_Name (Chars (Argx)) then
|
|
Error_Pragma_Arg
|
|
("& is not a valid locking policy name", Argx);
|
|
end if;
|
|
end Check_Arg_Is_Locking_Policy;
|
|
|
|
-------------------------
|
|
-- Check_Arg_Is_One_Of --
|
|
-------------------------
|
|
|
|
procedure Check_Arg_Is_One_Of (Arg : Node_Id; N1, N2 : Name_Id) is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
|
|
begin
|
|
Check_Arg_Is_Identifier (Argx);
|
|
|
|
if Chars (Argx) /= N1 and then Chars (Argx) /= N2 then
|
|
Error_Msg_Name_2 := N1;
|
|
Error_Msg_Name_3 := N2;
|
|
Error_Pragma_Arg ("argument for pragma% must be% or%", Argx);
|
|
end if;
|
|
end Check_Arg_Is_One_Of;
|
|
|
|
procedure Check_Arg_Is_One_Of
|
|
(Arg : Node_Id;
|
|
N1, N2, N3 : Name_Id)
|
|
is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
|
|
begin
|
|
Check_Arg_Is_Identifier (Argx);
|
|
|
|
if Chars (Argx) /= N1
|
|
and then Chars (Argx) /= N2
|
|
and then Chars (Argx) /= N3
|
|
then
|
|
Error_Pragma_Arg ("invalid argument for pragma%", Argx);
|
|
end if;
|
|
end Check_Arg_Is_One_Of;
|
|
|
|
procedure Check_Arg_Is_One_Of
|
|
(Arg : Node_Id;
|
|
N1, N2, N3, N4 : Name_Id)
|
|
is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
|
|
begin
|
|
Check_Arg_Is_Identifier (Argx);
|
|
|
|
if Chars (Argx) /= N1
|
|
and then Chars (Argx) /= N2
|
|
and then Chars (Argx) /= N3
|
|
and then Chars (Argx) /= N4
|
|
then
|
|
Error_Pragma_Arg ("invalid argument for pragma%", Argx);
|
|
end if;
|
|
end Check_Arg_Is_One_Of;
|
|
|
|
---------------------------------
|
|
-- Check_Arg_Is_Queuing_Policy --
|
|
---------------------------------
|
|
|
|
procedure Check_Arg_Is_Queuing_Policy (Arg : Node_Id) is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
|
|
begin
|
|
Check_Arg_Is_Identifier (Argx);
|
|
|
|
if not Is_Queuing_Policy_Name (Chars (Argx)) then
|
|
Error_Pragma_Arg
|
|
("& is not a valid queuing policy name", Argx);
|
|
end if;
|
|
end Check_Arg_Is_Queuing_Policy;
|
|
|
|
------------------------------------
|
|
-- Check_Arg_Is_Static_Expression --
|
|
------------------------------------
|
|
|
|
procedure Check_Arg_Is_Static_Expression
|
|
(Arg : Node_Id;
|
|
Typ : Entity_Id := Empty)
|
|
is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
|
|
begin
|
|
if Present (Typ) then
|
|
Analyze_And_Resolve (Argx, Typ);
|
|
else
|
|
Analyze_And_Resolve (Argx);
|
|
end if;
|
|
|
|
if Is_OK_Static_Expression (Argx) then
|
|
return;
|
|
|
|
elsif Etype (Argx) = Any_Type then
|
|
raise Pragma_Exit;
|
|
|
|
-- An interesting special case, if we have a string literal and we
|
|
-- are in Ada 83 mode, then we allow it even though it will not be
|
|
-- flagged as static. This allows the use of Ada 95 pragmas like
|
|
-- Import in Ada 83 mode. They will of course be flagged with
|
|
-- warnings as usual, but will not cause errors.
|
|
|
|
elsif Ada_Version = Ada_83
|
|
and then Nkind (Argx) = N_String_Literal
|
|
then
|
|
return;
|
|
|
|
-- Static expression that raises Constraint_Error. This has already
|
|
-- been flagged, so just exit from pragma processing.
|
|
|
|
elsif Is_Static_Expression (Argx) then
|
|
raise Pragma_Exit;
|
|
|
|
-- Finally, we have a real error
|
|
|
|
else
|
|
Error_Msg_Name_1 := Pname;
|
|
Flag_Non_Static_Expr
|
|
("argument for pragma% must be a static expression!", Argx);
|
|
raise Pragma_Exit;
|
|
end if;
|
|
end Check_Arg_Is_Static_Expression;
|
|
|
|
---------------------------------
|
|
-- Check_Arg_Is_String_Literal --
|
|
---------------------------------
|
|
|
|
procedure Check_Arg_Is_String_Literal (Arg : Node_Id) is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
begin
|
|
if Nkind (Argx) /= N_String_Literal then
|
|
Error_Pragma_Arg
|
|
("argument for pragma% must be string literal", Argx);
|
|
end if;
|
|
end Check_Arg_Is_String_Literal;
|
|
|
|
------------------------------------------
|
|
-- Check_Arg_Is_Task_Dispatching_Policy --
|
|
------------------------------------------
|
|
|
|
procedure Check_Arg_Is_Task_Dispatching_Policy (Arg : Node_Id) is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
|
|
begin
|
|
Check_Arg_Is_Identifier (Argx);
|
|
|
|
if not Is_Task_Dispatching_Policy_Name (Chars (Argx)) then
|
|
Error_Pragma_Arg
|
|
("& is not a valid task dispatching policy name", Argx);
|
|
end if;
|
|
end Check_Arg_Is_Task_Dispatching_Policy;
|
|
|
|
---------------------
|
|
-- Check_Arg_Order --
|
|
---------------------
|
|
|
|
procedure Check_Arg_Order (Names : Name_List) is
|
|
Arg : Node_Id;
|
|
|
|
Highest_So_Far : Natural := 0;
|
|
-- Highest index in Names seen do far
|
|
|
|
begin
|
|
Arg := Arg1;
|
|
for J in 1 .. Arg_Count loop
|
|
if Chars (Arg) /= No_Name then
|
|
for K in Names'Range loop
|
|
if Chars (Arg) = Names (K) then
|
|
if K < Highest_So_Far then
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N
|
|
("parameters out of order for pragma%", Arg);
|
|
Error_Msg_Name_1 := Names (K);
|
|
Error_Msg_Name_2 := Names (Highest_So_Far);
|
|
Error_Msg_N ("\% must appear before %", Arg);
|
|
raise Pragma_Exit;
|
|
|
|
else
|
|
Highest_So_Far := K;
|
|
end if;
|
|
end if;
|
|
end loop;
|
|
end if;
|
|
|
|
Arg := Next (Arg);
|
|
end loop;
|
|
end Check_Arg_Order;
|
|
|
|
--------------------------------
|
|
-- Check_At_Least_N_Arguments --
|
|
--------------------------------
|
|
|
|
procedure Check_At_Least_N_Arguments (N : Nat) is
|
|
begin
|
|
if Arg_Count < N then
|
|
Error_Pragma ("too few arguments for pragma%");
|
|
end if;
|
|
end Check_At_Least_N_Arguments;
|
|
|
|
-------------------------------
|
|
-- Check_At_Most_N_Arguments --
|
|
-------------------------------
|
|
|
|
procedure Check_At_Most_N_Arguments (N : Nat) is
|
|
Arg : Node_Id;
|
|
begin
|
|
if Arg_Count > N then
|
|
Arg := Arg1;
|
|
for J in 1 .. N loop
|
|
Next (Arg);
|
|
Error_Pragma_Arg ("too many arguments for pragma%", Arg);
|
|
end loop;
|
|
end if;
|
|
end Check_At_Most_N_Arguments;
|
|
|
|
---------------------
|
|
-- Check_Component --
|
|
---------------------
|
|
|
|
procedure Check_Component (Comp : Node_Id) is
|
|
begin
|
|
if Nkind (Comp) = N_Component_Declaration then
|
|
declare
|
|
Sindic : constant Node_Id :=
|
|
Subtype_Indication (Component_Definition (Comp));
|
|
Typ : constant Entity_Id :=
|
|
Etype (Defining_Identifier (Comp));
|
|
begin
|
|
if Nkind (Sindic) = N_Subtype_Indication then
|
|
|
|
-- Ada 2005 (AI-216): If a component subtype is subject to
|
|
-- a per-object constraint, then the component type shall
|
|
-- be an Unchecked_Union.
|
|
|
|
if Has_Per_Object_Constraint (Defining_Identifier (Comp))
|
|
and then
|
|
not Is_Unchecked_Union (Etype (Subtype_Mark (Sindic)))
|
|
then
|
|
Error_Msg_N ("component subtype subject to per-object" &
|
|
" constraint must be an Unchecked_Union", Comp);
|
|
end if;
|
|
end if;
|
|
|
|
if Is_Controlled (Typ) then
|
|
Error_Msg_N
|
|
("component of unchecked union cannot be controlled", Comp);
|
|
|
|
elsif Has_Task (Typ) then
|
|
Error_Msg_N
|
|
("component of unchecked union cannot have tasks", Comp);
|
|
end if;
|
|
end;
|
|
end if;
|
|
end Check_Component;
|
|
|
|
----------------------------------
|
|
-- Check_Duplicated_Export_Name --
|
|
----------------------------------
|
|
|
|
procedure Check_Duplicated_Export_Name (Nam : Node_Id) is
|
|
String_Val : constant String_Id := Strval (Nam);
|
|
|
|
begin
|
|
-- We allow duplicated export names in CIL, as they are always
|
|
-- enclosed in a namespace that differentiates them, and overloaded
|
|
-- entities are supported by the VM.
|
|
|
|
if VM_Target = CLI_Target then
|
|
return;
|
|
end if;
|
|
|
|
-- We are only interested in the export case, and in the case of
|
|
-- generics, it is the instance, not the template, that is the
|
|
-- problem (the template will generate a warning in any case).
|
|
|
|
if not Inside_A_Generic
|
|
and then (Prag_Id = Pragma_Export
|
|
or else
|
|
Prag_Id = Pragma_Export_Procedure
|
|
or else
|
|
Prag_Id = Pragma_Export_Valued_Procedure
|
|
or else
|
|
Prag_Id = Pragma_Export_Function)
|
|
then
|
|
for J in Externals.First .. Externals.Last loop
|
|
if String_Equal (String_Val, Strval (Externals.Table (J))) then
|
|
Error_Msg_Sloc := Sloc (Externals.Table (J));
|
|
Error_Msg_N ("external name duplicates name given#", Nam);
|
|
exit;
|
|
end if;
|
|
end loop;
|
|
|
|
Externals.Append (Nam);
|
|
end if;
|
|
end Check_Duplicated_Export_Name;
|
|
|
|
-------------------------
|
|
-- Check_First_Subtype --
|
|
-------------------------
|
|
|
|
procedure Check_First_Subtype (Arg : Node_Id) is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
begin
|
|
if not Is_First_Subtype (Entity (Argx)) then
|
|
Error_Pragma_Arg
|
|
("pragma% cannot apply to subtype", Argx);
|
|
end if;
|
|
end Check_First_Subtype;
|
|
|
|
---------------------------
|
|
-- Check_In_Main_Program --
|
|
---------------------------
|
|
|
|
procedure Check_In_Main_Program is
|
|
P : constant Node_Id := Parent (N);
|
|
|
|
begin
|
|
-- Must be at in subprogram body
|
|
|
|
if Nkind (P) /= N_Subprogram_Body then
|
|
Error_Pragma ("% pragma allowed only in subprogram");
|
|
|
|
-- Otherwise warn if obviously not main program
|
|
|
|
elsif Present (Parameter_Specifications (Specification (P)))
|
|
or else not Is_Compilation_Unit (Defining_Entity (P))
|
|
then
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N
|
|
("?pragma% is only effective in main program", N);
|
|
end if;
|
|
end Check_In_Main_Program;
|
|
|
|
---------------------------------------
|
|
-- Check_Interrupt_Or_Attach_Handler --
|
|
---------------------------------------
|
|
|
|
procedure Check_Interrupt_Or_Attach_Handler is
|
|
Arg1_X : constant Node_Id := Expression (Arg1);
|
|
Handler_Proc, Proc_Scope : Entity_Id;
|
|
|
|
begin
|
|
Analyze (Arg1_X);
|
|
|
|
if Prag_Id = Pragma_Interrupt_Handler then
|
|
Check_Restriction (No_Dynamic_Attachment, N);
|
|
end if;
|
|
|
|
Handler_Proc := Find_Unique_Parameterless_Procedure (Arg1_X, Arg1);
|
|
Proc_Scope := Scope (Handler_Proc);
|
|
|
|
-- On AAMP only, a pragma Interrupt_Handler is supported for
|
|
-- nonprotected parameterless procedures.
|
|
|
|
if not AAMP_On_Target
|
|
or else Prag_Id = Pragma_Attach_Handler
|
|
then
|
|
if Ekind (Proc_Scope) /= E_Protected_Type then
|
|
Error_Pragma_Arg
|
|
("argument of pragma% must be protected procedure", Arg1);
|
|
end if;
|
|
|
|
if Parent (N) /= Protected_Definition (Parent (Proc_Scope)) then
|
|
Error_Pragma ("pragma% must be in protected definition");
|
|
end if;
|
|
end if;
|
|
|
|
if not Is_Library_Level_Entity (Proc_Scope)
|
|
or else (AAMP_On_Target
|
|
and then not Is_Library_Level_Entity (Handler_Proc))
|
|
then
|
|
Error_Pragma_Arg
|
|
("argument for pragma% must be library level entity", Arg1);
|
|
end if;
|
|
end Check_Interrupt_Or_Attach_Handler;
|
|
|
|
-------------------------------------------
|
|
-- Check_Is_In_Decl_Part_Or_Package_Spec --
|
|
-------------------------------------------
|
|
|
|
procedure Check_Is_In_Decl_Part_Or_Package_Spec is
|
|
P : Node_Id;
|
|
|
|
begin
|
|
P := Parent (N);
|
|
loop
|
|
if No (P) then
|
|
exit;
|
|
|
|
elsif Nkind (P) = N_Handled_Sequence_Of_Statements then
|
|
exit;
|
|
|
|
elsif Nkind_In (P, N_Package_Specification,
|
|
N_Block_Statement)
|
|
then
|
|
return;
|
|
|
|
-- Note: the following tests seem a little peculiar, because
|
|
-- they test for bodies, but if we were in the statement part
|
|
-- of the body, we would already have hit the handled statement
|
|
-- sequence, so the only way we get here is by being in the
|
|
-- declarative part of the body.
|
|
|
|
elsif Nkind_In (P, N_Subprogram_Body,
|
|
N_Package_Body,
|
|
N_Task_Body,
|
|
N_Entry_Body)
|
|
then
|
|
return;
|
|
end if;
|
|
|
|
P := Parent (P);
|
|
end loop;
|
|
|
|
Error_Pragma ("pragma% is not in declarative part or package spec");
|
|
end Check_Is_In_Decl_Part_Or_Package_Spec;
|
|
|
|
-------------------------
|
|
-- Check_No_Identifier --
|
|
-------------------------
|
|
|
|
procedure Check_No_Identifier (Arg : Node_Id) is
|
|
begin
|
|
if Chars (Arg) /= No_Name then
|
|
Error_Pragma_Arg_Ident
|
|
("pragma% does not permit identifier& here", Arg);
|
|
end if;
|
|
end Check_No_Identifier;
|
|
|
|
--------------------------
|
|
-- Check_No_Identifiers --
|
|
--------------------------
|
|
|
|
procedure Check_No_Identifiers is
|
|
Arg_Node : Node_Id;
|
|
begin
|
|
if Arg_Count > 0 then
|
|
Arg_Node := Arg1;
|
|
while Present (Arg_Node) loop
|
|
Check_No_Identifier (Arg_Node);
|
|
Next (Arg_Node);
|
|
end loop;
|
|
end if;
|
|
end Check_No_Identifiers;
|
|
|
|
-------------------------------
|
|
-- Check_Optional_Identifier --
|
|
-------------------------------
|
|
|
|
procedure Check_Optional_Identifier (Arg : Node_Id; Id : Name_Id) is
|
|
begin
|
|
if Present (Arg) and then Chars (Arg) /= No_Name then
|
|
if Chars (Arg) /= Id then
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_Name_2 := Id;
|
|
Error_Msg_N ("pragma% argument expects identifier%", Arg);
|
|
raise Pragma_Exit;
|
|
end if;
|
|
end if;
|
|
end Check_Optional_Identifier;
|
|
|
|
procedure Check_Optional_Identifier (Arg : Node_Id; Id : String) is
|
|
begin
|
|
Name_Buffer (1 .. Id'Length) := Id;
|
|
Name_Len := Id'Length;
|
|
Check_Optional_Identifier (Arg, Name_Find);
|
|
end Check_Optional_Identifier;
|
|
|
|
--------------------------------------
|
|
-- Check_Precondition_Postcondition --
|
|
--------------------------------------
|
|
|
|
procedure Check_Precondition_Postcondition (In_Body : out Boolean) is
|
|
P : Node_Id;
|
|
PO : Node_Id;
|
|
|
|
procedure Chain_PPC (PO : Node_Id);
|
|
-- If PO is a subprogram declaration node (or a generic subprogram
|
|
-- declaration node), then the precondition/postcondition applies
|
|
-- to this subprogram and the processing for the pragma is completed.
|
|
-- Otherwise the pragma is misplaced.
|
|
|
|
---------------
|
|
-- Chain_PPC --
|
|
---------------
|
|
|
|
procedure Chain_PPC (PO : Node_Id) is
|
|
S : Node_Id;
|
|
|
|
begin
|
|
if not Nkind_In (PO, N_Subprogram_Declaration,
|
|
N_Generic_Subprogram_Declaration)
|
|
then
|
|
Pragma_Misplaced;
|
|
end if;
|
|
|
|
-- Here if we have subprogram or generic subprogram declaration
|
|
|
|
S := Defining_Unit_Name (Specification (PO));
|
|
|
|
-- Analyze the pragma unless it appears within a package spec,
|
|
-- which is the case where we delay the analysis of the PPC until
|
|
-- the end of the package declarations (for details, see
|
|
-- Analyze_Package_Specification.Analyze_PPCs).
|
|
|
|
if not Is_Package_Or_Generic_Package (Scope (S)) then
|
|
Analyze_PPC_In_Decl_Part (N, S);
|
|
end if;
|
|
|
|
-- Chain spec PPC pragma to list for subprogram
|
|
|
|
Set_Next_Pragma (N, Spec_PPC_List (S));
|
|
Set_Spec_PPC_List (S, N);
|
|
|
|
-- Return indicating spec case
|
|
|
|
In_Body := False;
|
|
return;
|
|
end Chain_PPC;
|
|
|
|
-- Start of processing for Check_Precondition_Postcondition
|
|
|
|
begin
|
|
if not Is_List_Member (N) then
|
|
Pragma_Misplaced;
|
|
end if;
|
|
|
|
-- Record whether pragma is enabled
|
|
|
|
Set_Pragma_Enabled (N, Check_Enabled (Pname));
|
|
|
|
-- If we are within an inlined body, the legality of the pragma
|
|
-- has been checked already.
|
|
|
|
if In_Inlined_Body then
|
|
In_Body := True;
|
|
return;
|
|
end if;
|
|
|
|
-- Search prior declarations
|
|
|
|
P := N;
|
|
while Present (Prev (P)) loop
|
|
P := Prev (P);
|
|
|
|
-- If the previous node is a generic subprogram, do not go to to
|
|
-- the original node, which is the unanalyzed tree: we need to
|
|
-- attach the pre/postconditions to the analyzed version at this
|
|
-- point. They get propagated to the original tree when analyzing
|
|
-- the corresponding body.
|
|
|
|
if Nkind (P) not in N_Generic_Declaration then
|
|
PO := Original_Node (P);
|
|
else
|
|
PO := P;
|
|
end if;
|
|
|
|
-- Skip past prior pragma
|
|
|
|
if Nkind (PO) = N_Pragma then
|
|
null;
|
|
|
|
-- Skip stuff not coming from source
|
|
|
|
elsif not Comes_From_Source (PO) then
|
|
null;
|
|
|
|
-- Only remaining possibility is subprogram declaration
|
|
|
|
else
|
|
Chain_PPC (PO);
|
|
return;
|
|
end if;
|
|
end loop;
|
|
|
|
-- If we fall through loop, pragma is at start of list, so see if it
|
|
-- is at the start of declarations of a subprogram body.
|
|
|
|
if Nkind (Parent (N)) = N_Subprogram_Body
|
|
and then List_Containing (N) = Declarations (Parent (N))
|
|
then
|
|
if Operating_Mode /= Generate_Code
|
|
or else Inside_A_Generic
|
|
then
|
|
|
|
-- Analyze expression in pragma, for correctness
|
|
-- and for ASIS use.
|
|
|
|
Preanalyze_Spec_Expression
|
|
(Get_Pragma_Arg (Arg1), Standard_Boolean);
|
|
end if;
|
|
|
|
In_Body := True;
|
|
return;
|
|
|
|
-- See if it is in the pragmas after a library level subprogram
|
|
|
|
elsif Nkind (Parent (N)) = N_Compilation_Unit_Aux then
|
|
Chain_PPC (Unit (Parent (Parent (N))));
|
|
return;
|
|
end if;
|
|
|
|
-- If we fall through, pragma was misplaced
|
|
|
|
Pragma_Misplaced;
|
|
end Check_Precondition_Postcondition;
|
|
|
|
-----------------------------
|
|
-- Check_Static_Constraint --
|
|
-----------------------------
|
|
|
|
-- Note: for convenience in writing this procedure, in addition to
|
|
-- the officially (i.e. by spec) allowed argument which is always a
|
|
-- constraint, it also allows ranges and discriminant associations.
|
|
-- Above is not clear ???
|
|
|
|
procedure Check_Static_Constraint (Constr : Node_Id) is
|
|
|
|
procedure Require_Static (E : Node_Id);
|
|
-- Require given expression to be static expression
|
|
|
|
--------------------
|
|
-- Require_Static --
|
|
--------------------
|
|
|
|
procedure Require_Static (E : Node_Id) is
|
|
begin
|
|
if not Is_OK_Static_Expression (E) then
|
|
Flag_Non_Static_Expr
|
|
("non-static constraint not allowed in Unchecked_Union!", E);
|
|
raise Pragma_Exit;
|
|
end if;
|
|
end Require_Static;
|
|
|
|
-- Start of processing for Check_Static_Constraint
|
|
|
|
begin
|
|
case Nkind (Constr) is
|
|
when N_Discriminant_Association =>
|
|
Require_Static (Expression (Constr));
|
|
|
|
when N_Range =>
|
|
Require_Static (Low_Bound (Constr));
|
|
Require_Static (High_Bound (Constr));
|
|
|
|
when N_Attribute_Reference =>
|
|
Require_Static (Type_Low_Bound (Etype (Prefix (Constr))));
|
|
Require_Static (Type_High_Bound (Etype (Prefix (Constr))));
|
|
|
|
when N_Range_Constraint =>
|
|
Check_Static_Constraint (Range_Expression (Constr));
|
|
|
|
when N_Index_Or_Discriminant_Constraint =>
|
|
declare
|
|
IDC : Entity_Id;
|
|
begin
|
|
IDC := First (Constraints (Constr));
|
|
while Present (IDC) loop
|
|
Check_Static_Constraint (IDC);
|
|
Next (IDC);
|
|
end loop;
|
|
end;
|
|
|
|
when others =>
|
|
null;
|
|
end case;
|
|
end Check_Static_Constraint;
|
|
|
|
--------------------------------------
|
|
-- Check_Valid_Configuration_Pragma --
|
|
--------------------------------------
|
|
|
|
-- A configuration pragma must appear in the context clause of a
|
|
-- compilation unit, and only other pragmas may precede it. Note that
|
|
-- the test also allows use in a configuration pragma file.
|
|
|
|
procedure Check_Valid_Configuration_Pragma is
|
|
begin
|
|
if not Is_Configuration_Pragma then
|
|
Error_Pragma ("incorrect placement for configuration pragma%");
|
|
end if;
|
|
end Check_Valid_Configuration_Pragma;
|
|
|
|
-------------------------------------
|
|
-- Check_Valid_Library_Unit_Pragma --
|
|
-------------------------------------
|
|
|
|
procedure Check_Valid_Library_Unit_Pragma is
|
|
Plist : List_Id;
|
|
Parent_Node : Node_Id;
|
|
Unit_Name : Entity_Id;
|
|
Unit_Kind : Node_Kind;
|
|
Unit_Node : Node_Id;
|
|
Sindex : Source_File_Index;
|
|
|
|
begin
|
|
if not Is_List_Member (N) then
|
|
Pragma_Misplaced;
|
|
|
|
else
|
|
Plist := List_Containing (N);
|
|
Parent_Node := Parent (Plist);
|
|
|
|
if Parent_Node = Empty then
|
|
Pragma_Misplaced;
|
|
|
|
-- Case of pragma appearing after a compilation unit. In this case
|
|
-- it must have an argument with the corresponding name and must
|
|
-- be part of the following pragmas of its parent.
|
|
|
|
elsif Nkind (Parent_Node) = N_Compilation_Unit_Aux then
|
|
if Plist /= Pragmas_After (Parent_Node) then
|
|
Pragma_Misplaced;
|
|
|
|
elsif Arg_Count = 0 then
|
|
Error_Pragma
|
|
("argument required if outside compilation unit");
|
|
|
|
else
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Unit_Node := Unit (Parent (Parent_Node));
|
|
Unit_Kind := Nkind (Unit_Node);
|
|
|
|
Analyze (Expression (Arg1));
|
|
|
|
if Unit_Kind = N_Generic_Subprogram_Declaration
|
|
or else Unit_Kind = N_Subprogram_Declaration
|
|
then
|
|
Unit_Name := Defining_Entity (Unit_Node);
|
|
|
|
elsif Unit_Kind in N_Generic_Instantiation then
|
|
Unit_Name := Defining_Entity (Unit_Node);
|
|
|
|
else
|
|
Unit_Name := Cunit_Entity (Current_Sem_Unit);
|
|
end if;
|
|
|
|
if Chars (Unit_Name) /=
|
|
Chars (Entity (Expression (Arg1)))
|
|
then
|
|
Error_Pragma_Arg
|
|
("pragma% argument is not current unit name", Arg1);
|
|
end if;
|
|
|
|
if Ekind (Unit_Name) = E_Package
|
|
and then Present (Renamed_Entity (Unit_Name))
|
|
then
|
|
Error_Pragma ("pragma% not allowed for renamed package");
|
|
end if;
|
|
end if;
|
|
|
|
-- Pragma appears other than after a compilation unit
|
|
|
|
else
|
|
-- Here we check for the generic instantiation case and also
|
|
-- for the case of processing a generic formal package. We
|
|
-- detect these cases by noting that the Sloc on the node
|
|
-- does not belong to the current compilation unit.
|
|
|
|
Sindex := Source_Index (Current_Sem_Unit);
|
|
|
|
if Loc not in Source_First (Sindex) .. Source_Last (Sindex) then
|
|
Rewrite (N, Make_Null_Statement (Loc));
|
|
return;
|
|
|
|
-- If before first declaration, the pragma applies to the
|
|
-- enclosing unit, and the name if present must be this name.
|
|
|
|
elsif Is_Before_First_Decl (N, Plist) then
|
|
Unit_Node := Unit_Declaration_Node (Current_Scope);
|
|
Unit_Kind := Nkind (Unit_Node);
|
|
|
|
if Nkind (Parent (Unit_Node)) /= N_Compilation_Unit then
|
|
Pragma_Misplaced;
|
|
|
|
elsif Unit_Kind = N_Subprogram_Body
|
|
and then not Acts_As_Spec (Unit_Node)
|
|
then
|
|
Pragma_Misplaced;
|
|
|
|
elsif Nkind (Parent_Node) = N_Package_Body then
|
|
Pragma_Misplaced;
|
|
|
|
elsif Nkind (Parent_Node) = N_Package_Specification
|
|
and then Plist = Private_Declarations (Parent_Node)
|
|
then
|
|
Pragma_Misplaced;
|
|
|
|
elsif (Nkind (Parent_Node) = N_Generic_Package_Declaration
|
|
or else Nkind (Parent_Node) =
|
|
N_Generic_Subprogram_Declaration)
|
|
and then Plist = Generic_Formal_Declarations (Parent_Node)
|
|
then
|
|
Pragma_Misplaced;
|
|
|
|
elsif Arg_Count > 0 then
|
|
Analyze (Expression (Arg1));
|
|
|
|
if Entity (Expression (Arg1)) /= Current_Scope then
|
|
Error_Pragma_Arg
|
|
("name in pragma% must be enclosing unit", Arg1);
|
|
end if;
|
|
|
|
-- It is legal to have no argument in this context
|
|
|
|
else
|
|
return;
|
|
end if;
|
|
|
|
-- Error if not before first declaration. This is because a
|
|
-- library unit pragma argument must be the name of a library
|
|
-- unit (RM 10.1.5(7)), but the only names permitted in this
|
|
-- context are (RM 10.1.5(6)) names of subprogram declarations,
|
|
-- generic subprogram declarations or generic instantiations.
|
|
|
|
else
|
|
Error_Pragma
|
|
("pragma% misplaced, must be before first declaration");
|
|
end if;
|
|
end if;
|
|
end if;
|
|
end Check_Valid_Library_Unit_Pragma;
|
|
|
|
-------------------
|
|
-- Check_Variant --
|
|
-------------------
|
|
|
|
procedure Check_Variant (Variant : Node_Id) is
|
|
Clist : constant Node_Id := Component_List (Variant);
|
|
Comp : Node_Id;
|
|
|
|
begin
|
|
if not Is_Non_Empty_List (Component_Items (Clist)) then
|
|
Error_Msg_N
|
|
("Unchecked_Union may not have empty component list",
|
|
Variant);
|
|
return;
|
|
end if;
|
|
|
|
Comp := First (Component_Items (Clist));
|
|
while Present (Comp) loop
|
|
Check_Component (Comp);
|
|
Next (Comp);
|
|
end loop;
|
|
end Check_Variant;
|
|
|
|
------------------
|
|
-- Error_Pragma --
|
|
------------------
|
|
|
|
procedure Error_Pragma (Msg : String) is
|
|
begin
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N (Msg, N);
|
|
raise Pragma_Exit;
|
|
end Error_Pragma;
|
|
|
|
----------------------
|
|
-- Error_Pragma_Arg --
|
|
----------------------
|
|
|
|
procedure Error_Pragma_Arg (Msg : String; Arg : Node_Id) is
|
|
begin
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N (Msg, Get_Pragma_Arg (Arg));
|
|
raise Pragma_Exit;
|
|
end Error_Pragma_Arg;
|
|
|
|
procedure Error_Pragma_Arg (Msg1, Msg2 : String; Arg : Node_Id) is
|
|
begin
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N (Msg1, Get_Pragma_Arg (Arg));
|
|
Error_Pragma_Arg (Msg2, Arg);
|
|
end Error_Pragma_Arg;
|
|
|
|
----------------------------
|
|
-- Error_Pragma_Arg_Ident --
|
|
----------------------------
|
|
|
|
procedure Error_Pragma_Arg_Ident (Msg : String; Arg : Node_Id) is
|
|
begin
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N (Msg, Arg);
|
|
raise Pragma_Exit;
|
|
end Error_Pragma_Arg_Ident;
|
|
|
|
----------------------
|
|
-- Error_Pragma_Ref --
|
|
----------------------
|
|
|
|
procedure Error_Pragma_Ref (Msg : String; Ref : Entity_Id) is
|
|
begin
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_Sloc := Sloc (Ref);
|
|
Error_Msg_NE (Msg, N, Ref);
|
|
raise Pragma_Exit;
|
|
end Error_Pragma_Ref;
|
|
|
|
------------------------
|
|
-- Find_Lib_Unit_Name --
|
|
------------------------
|
|
|
|
function Find_Lib_Unit_Name return Entity_Id is
|
|
begin
|
|
-- Return inner compilation unit entity, for case of nested
|
|
-- categorization pragmas. This happens in generic unit.
|
|
|
|
if Nkind (Parent (N)) = N_Package_Specification
|
|
and then Defining_Entity (Parent (N)) /= Current_Scope
|
|
then
|
|
return Defining_Entity (Parent (N));
|
|
else
|
|
return Current_Scope;
|
|
end if;
|
|
end Find_Lib_Unit_Name;
|
|
|
|
----------------------------
|
|
-- Find_Program_Unit_Name --
|
|
----------------------------
|
|
|
|
procedure Find_Program_Unit_Name (Id : Node_Id) is
|
|
Unit_Name : Entity_Id;
|
|
Unit_Kind : Node_Kind;
|
|
P : constant Node_Id := Parent (N);
|
|
|
|
begin
|
|
if Nkind (P) = N_Compilation_Unit then
|
|
Unit_Kind := Nkind (Unit (P));
|
|
|
|
if Unit_Kind = N_Subprogram_Declaration
|
|
or else Unit_Kind = N_Package_Declaration
|
|
or else Unit_Kind in N_Generic_Declaration
|
|
then
|
|
Unit_Name := Defining_Entity (Unit (P));
|
|
|
|
if Chars (Id) = Chars (Unit_Name) then
|
|
Set_Entity (Id, Unit_Name);
|
|
Set_Etype (Id, Etype (Unit_Name));
|
|
else
|
|
Set_Etype (Id, Any_Type);
|
|
Error_Pragma
|
|
("cannot find program unit referenced by pragma%");
|
|
end if;
|
|
|
|
else
|
|
Set_Etype (Id, Any_Type);
|
|
Error_Pragma ("pragma% inapplicable to this unit");
|
|
end if;
|
|
|
|
else
|
|
Analyze (Id);
|
|
end if;
|
|
end Find_Program_Unit_Name;
|
|
|
|
-----------------------------------------
|
|
-- Find_Unique_Parameterless_Procedure --
|
|
-----------------------------------------
|
|
|
|
function Find_Unique_Parameterless_Procedure
|
|
(Name : Entity_Id;
|
|
Arg : Node_Id) return Entity_Id
|
|
is
|
|
Proc : Entity_Id := Empty;
|
|
|
|
begin
|
|
-- The body of this procedure needs some comments ???
|
|
|
|
if not Is_Entity_Name (Name) then
|
|
Error_Pragma_Arg
|
|
("argument of pragma% must be entity name", Arg);
|
|
|
|
elsif not Is_Overloaded (Name) then
|
|
Proc := Entity (Name);
|
|
|
|
if Ekind (Proc) /= E_Procedure
|
|
or else Present (First_Formal (Proc)) then
|
|
Error_Pragma_Arg
|
|
("argument of pragma% must be parameterless procedure", Arg);
|
|
end if;
|
|
|
|
else
|
|
declare
|
|
Found : Boolean := False;
|
|
It : Interp;
|
|
Index : Interp_Index;
|
|
|
|
begin
|
|
Get_First_Interp (Name, Index, It);
|
|
while Present (It.Nam) loop
|
|
Proc := It.Nam;
|
|
|
|
if Ekind (Proc) = E_Procedure
|
|
and then No (First_Formal (Proc))
|
|
then
|
|
if not Found then
|
|
Found := True;
|
|
Set_Entity (Name, Proc);
|
|
Set_Is_Overloaded (Name, False);
|
|
else
|
|
Error_Pragma_Arg
|
|
("ambiguous handler name for pragma% ", Arg);
|
|
end if;
|
|
end if;
|
|
|
|
Get_Next_Interp (Index, It);
|
|
end loop;
|
|
|
|
if not Found then
|
|
Error_Pragma_Arg
|
|
("argument of pragma% must be parameterless procedure",
|
|
Arg);
|
|
else
|
|
Proc := Entity (Name);
|
|
end if;
|
|
end;
|
|
end if;
|
|
|
|
return Proc;
|
|
end Find_Unique_Parameterless_Procedure;
|
|
|
|
-------------------------
|
|
-- Gather_Associations --
|
|
-------------------------
|
|
|
|
procedure Gather_Associations
|
|
(Names : Name_List;
|
|
Args : out Args_List)
|
|
is
|
|
Arg : Node_Id;
|
|
|
|
begin
|
|
-- Initialize all parameters to Empty
|
|
|
|
for J in Args'Range loop
|
|
Args (J) := Empty;
|
|
end loop;
|
|
|
|
-- That's all we have to do if there are no argument associations
|
|
|
|
if No (Pragma_Argument_Associations (N)) then
|
|
return;
|
|
end if;
|
|
|
|
-- Otherwise first deal with any positional parameters present
|
|
|
|
Arg := First (Pragma_Argument_Associations (N));
|
|
for Index in Args'Range loop
|
|
exit when No (Arg) or else Chars (Arg) /= No_Name;
|
|
Args (Index) := Expression (Arg);
|
|
Next (Arg);
|
|
end loop;
|
|
|
|
-- Positional parameters all processed, if any left, then we
|
|
-- have too many positional parameters.
|
|
|
|
if Present (Arg) and then Chars (Arg) = No_Name then
|
|
Error_Pragma_Arg
|
|
("too many positional associations for pragma%", Arg);
|
|
end if;
|
|
|
|
-- Process named parameters if any are present
|
|
|
|
while Present (Arg) loop
|
|
if Chars (Arg) = No_Name then
|
|
Error_Pragma_Arg
|
|
("positional association cannot follow named association",
|
|
Arg);
|
|
|
|
else
|
|
for Index in Names'Range loop
|
|
if Names (Index) = Chars (Arg) then
|
|
if Present (Args (Index)) then
|
|
Error_Pragma_Arg
|
|
("duplicate argument association for pragma%", Arg);
|
|
else
|
|
Args (Index) := Expression (Arg);
|
|
exit;
|
|
end if;
|
|
end if;
|
|
|
|
if Index = Names'Last then
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N ("pragma% does not allow & argument", Arg);
|
|
|
|
-- Check for possible misspelling
|
|
|
|
for Index1 in Names'Range loop
|
|
if Is_Bad_Spelling_Of
|
|
(Chars (Arg), Names (Index1))
|
|
then
|
|
Error_Msg_Name_1 := Names (Index1);
|
|
Error_Msg_N -- CODEFIX
|
|
("\possible misspelling of%", Arg);
|
|
exit;
|
|
end if;
|
|
end loop;
|
|
|
|
raise Pragma_Exit;
|
|
end if;
|
|
end loop;
|
|
end if;
|
|
|
|
Next (Arg);
|
|
end loop;
|
|
end Gather_Associations;
|
|
|
|
-----------------
|
|
-- GNAT_Pragma --
|
|
-----------------
|
|
|
|
procedure GNAT_Pragma is
|
|
begin
|
|
Check_Restriction (No_Implementation_Pragmas, N);
|
|
end GNAT_Pragma;
|
|
|
|
--------------------------
|
|
-- Is_Before_First_Decl --
|
|
--------------------------
|
|
|
|
function Is_Before_First_Decl
|
|
(Pragma_Node : Node_Id;
|
|
Decls : List_Id) return Boolean
|
|
is
|
|
Item : Node_Id := First (Decls);
|
|
|
|
begin
|
|
-- Only other pragmas can come before this pragma
|
|
|
|
loop
|
|
if No (Item) or else Nkind (Item) /= N_Pragma then
|
|
return False;
|
|
|
|
elsif Item = Pragma_Node then
|
|
return True;
|
|
end if;
|
|
|
|
Next (Item);
|
|
end loop;
|
|
end Is_Before_First_Decl;
|
|
|
|
-----------------------------
|
|
-- Is_Configuration_Pragma --
|
|
-----------------------------
|
|
|
|
-- A configuration pragma must appear in the context clause of a
|
|
-- compilation unit, and only other pragmas may precede it. Note that
|
|
-- the test below also permits use in a configuration pragma file.
|
|
|
|
function Is_Configuration_Pragma return Boolean is
|
|
Lis : constant List_Id := List_Containing (N);
|
|
Par : constant Node_Id := Parent (N);
|
|
Prg : Node_Id;
|
|
|
|
begin
|
|
-- If no parent, then we are in the configuration pragma file,
|
|
-- so the placement is definitely appropriate.
|
|
|
|
if No (Par) then
|
|
return True;
|
|
|
|
-- Otherwise we must be in the context clause of a compilation unit
|
|
-- and the only thing allowed before us in the context list is more
|
|
-- configuration pragmas.
|
|
|
|
elsif Nkind (Par) = N_Compilation_Unit
|
|
and then Context_Items (Par) = Lis
|
|
then
|
|
Prg := First (Lis);
|
|
|
|
loop
|
|
if Prg = N then
|
|
return True;
|
|
elsif Nkind (Prg) /= N_Pragma then
|
|
return False;
|
|
end if;
|
|
|
|
Next (Prg);
|
|
end loop;
|
|
|
|
else
|
|
return False;
|
|
end if;
|
|
end Is_Configuration_Pragma;
|
|
|
|
--------------------------
|
|
-- Is_In_Context_Clause --
|
|
--------------------------
|
|
|
|
function Is_In_Context_Clause return Boolean is
|
|
Plist : List_Id;
|
|
Parent_Node : Node_Id;
|
|
|
|
begin
|
|
if not Is_List_Member (N) then
|
|
return False;
|
|
|
|
else
|
|
Plist := List_Containing (N);
|
|
Parent_Node := Parent (Plist);
|
|
|
|
if Parent_Node = Empty
|
|
or else Nkind (Parent_Node) /= N_Compilation_Unit
|
|
or else Context_Items (Parent_Node) /= Plist
|
|
then
|
|
return False;
|
|
end if;
|
|
end if;
|
|
|
|
return True;
|
|
end Is_In_Context_Clause;
|
|
|
|
---------------------------------
|
|
-- Is_Static_String_Expression --
|
|
---------------------------------
|
|
|
|
function Is_Static_String_Expression (Arg : Node_Id) return Boolean is
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
|
|
|
|
begin
|
|
Analyze_And_Resolve (Argx);
|
|
return Is_OK_Static_Expression (Argx)
|
|
and then Nkind (Argx) = N_String_Literal;
|
|
end Is_Static_String_Expression;
|
|
|
|
----------------------
|
|
-- Pragma_Misplaced --
|
|
----------------------
|
|
|
|
procedure Pragma_Misplaced is
|
|
begin
|
|
Error_Pragma ("incorrect placement of pragma%");
|
|
end Pragma_Misplaced;
|
|
|
|
------------------------------------
|
|
-- Process Atomic_Shared_Volatile --
|
|
------------------------------------
|
|
|
|
procedure Process_Atomic_Shared_Volatile is
|
|
E_Id : Node_Id;
|
|
E : Entity_Id;
|
|
D : Node_Id;
|
|
K : Node_Kind;
|
|
Utyp : Entity_Id;
|
|
|
|
procedure Set_Atomic (E : Entity_Id);
|
|
-- Set given type as atomic, and if no explicit alignment was given,
|
|
-- set alignment to unknown, since back end knows what the alignment
|
|
-- requirements are for atomic arrays. Note: this step is necessary
|
|
-- for derived types.
|
|
|
|
----------------
|
|
-- Set_Atomic --
|
|
----------------
|
|
|
|
procedure Set_Atomic (E : Entity_Id) is
|
|
begin
|
|
Set_Is_Atomic (E);
|
|
|
|
if not Has_Alignment_Clause (E) then
|
|
Set_Alignment (E, Uint_0);
|
|
end if;
|
|
end Set_Atomic;
|
|
|
|
-- Start of processing for Process_Atomic_Shared_Volatile
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
E_Id := Expression (Arg1);
|
|
|
|
if Etype (E_Id) = Any_Type then
|
|
return;
|
|
end if;
|
|
|
|
E := Entity (E_Id);
|
|
D := Declaration_Node (E);
|
|
K := Nkind (D);
|
|
|
|
if Is_Type (E) then
|
|
if Rep_Item_Too_Early (E, N)
|
|
or else
|
|
Rep_Item_Too_Late (E, N)
|
|
then
|
|
return;
|
|
else
|
|
Check_First_Subtype (Arg1);
|
|
end if;
|
|
|
|
if Prag_Id /= Pragma_Volatile then
|
|
Set_Atomic (E);
|
|
Set_Atomic (Underlying_Type (E));
|
|
Set_Atomic (Base_Type (E));
|
|
end if;
|
|
|
|
-- Attribute belongs on the base type. If the view of the type is
|
|
-- currently private, it also belongs on the underlying type.
|
|
|
|
Set_Is_Volatile (Base_Type (E));
|
|
Set_Is_Volatile (Underlying_Type (E));
|
|
|
|
Set_Treat_As_Volatile (E);
|
|
Set_Treat_As_Volatile (Underlying_Type (E));
|
|
|
|
elsif K = N_Object_Declaration
|
|
or else (K = N_Component_Declaration
|
|
and then Original_Record_Component (E) = E)
|
|
then
|
|
if Rep_Item_Too_Late (E, N) then
|
|
return;
|
|
end if;
|
|
|
|
if Prag_Id /= Pragma_Volatile then
|
|
Set_Is_Atomic (E);
|
|
|
|
-- If the object declaration has an explicit initialization, a
|
|
-- temporary may have to be created to hold the expression, to
|
|
-- ensure that access to the object remain atomic.
|
|
|
|
if Nkind (Parent (E)) = N_Object_Declaration
|
|
and then Present (Expression (Parent (E)))
|
|
then
|
|
Set_Has_Delayed_Freeze (E);
|
|
end if;
|
|
|
|
-- An interesting improvement here. If an object of type X is
|
|
-- declared atomic, and the type X is not atomic, that's a
|
|
-- pity, since it may not have appropriate alignment etc. We
|
|
-- can rescue this in the special case where the object and
|
|
-- type are in the same unit by just setting the type as
|
|
-- atomic, so that the back end will process it as atomic.
|
|
|
|
Utyp := Underlying_Type (Etype (E));
|
|
|
|
if Present (Utyp)
|
|
and then Sloc (E) > No_Location
|
|
and then Sloc (Utyp) > No_Location
|
|
and then
|
|
Get_Source_File_Index (Sloc (E)) =
|
|
Get_Source_File_Index (Sloc (Underlying_Type (Etype (E))))
|
|
then
|
|
Set_Is_Atomic (Underlying_Type (Etype (E)));
|
|
end if;
|
|
end if;
|
|
|
|
Set_Is_Volatile (E);
|
|
Set_Treat_As_Volatile (E);
|
|
|
|
else
|
|
Error_Pragma_Arg
|
|
("inappropriate entity for pragma%", Arg1);
|
|
end if;
|
|
end Process_Atomic_Shared_Volatile;
|
|
|
|
-------------------------------------------
|
|
-- Process_Compile_Time_Warning_Or_Error --
|
|
-------------------------------------------
|
|
|
|
procedure Process_Compile_Time_Warning_Or_Error is
|
|
Arg1x : constant Node_Id := Get_Pragma_Arg (Arg1);
|
|
|
|
begin
|
|
Check_Arg_Count (2);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
|
|
Analyze_And_Resolve (Arg1x, Standard_Boolean);
|
|
|
|
if Compile_Time_Known_Value (Arg1x) then
|
|
if Is_True (Expr_Value (Get_Pragma_Arg (Arg1))) then
|
|
declare
|
|
Str : constant String_Id :=
|
|
Strval (Get_Pragma_Arg (Arg2));
|
|
Len : constant Int := String_Length (Str);
|
|
Cont : Boolean;
|
|
Ptr : Nat;
|
|
CC : Char_Code;
|
|
C : Character;
|
|
Cent : constant Entity_Id :=
|
|
Cunit_Entity (Current_Sem_Unit);
|
|
|
|
Force : constant Boolean :=
|
|
Prag_Id = Pragma_Compile_Time_Warning
|
|
and then
|
|
Is_Spec_Name (Unit_Name (Current_Sem_Unit))
|
|
and then (Ekind (Cent) /= E_Package
|
|
or else not In_Private_Part (Cent));
|
|
-- Set True if this is the warning case, and we are in the
|
|
-- visible part of a package spec, or in a subprogram spec,
|
|
-- in which case we want to force the client to see the
|
|
-- warning, even though it is not in the main unit.
|
|
|
|
begin
|
|
-- Loop through segments of message separated by line feeds.
|
|
-- We output these segments as separate messages with
|
|
-- continuation marks for all but the first.
|
|
|
|
Cont := False;
|
|
Ptr := 1;
|
|
loop
|
|
Error_Msg_Strlen := 0;
|
|
|
|
-- Loop to copy characters from argument to error message
|
|
-- string buffer.
|
|
|
|
loop
|
|
exit when Ptr > Len;
|
|
CC := Get_String_Char (Str, Ptr);
|
|
Ptr := Ptr + 1;
|
|
|
|
-- Ignore wide chars ??? else store character
|
|
|
|
if In_Character_Range (CC) then
|
|
C := Get_Character (CC);
|
|
exit when C = ASCII.LF;
|
|
Error_Msg_Strlen := Error_Msg_Strlen + 1;
|
|
Error_Msg_String (Error_Msg_Strlen) := C;
|
|
end if;
|
|
end loop;
|
|
|
|
-- Here with one line ready to go
|
|
|
|
Error_Msg_Warn := Prag_Id = Pragma_Compile_Time_Warning;
|
|
|
|
-- If this is a warning in a spec, then we want clients
|
|
-- to see the warning, so mark the message with the
|
|
-- special sequence !! to force the warning. In the case
|
|
-- of a package spec, we do not force this if we are in
|
|
-- the private part of the spec.
|
|
|
|
if Force then
|
|
if Cont = False then
|
|
Error_Msg_N ("<~!!", Arg1);
|
|
Cont := True;
|
|
else
|
|
Error_Msg_N ("\<~!!", Arg1);
|
|
end if;
|
|
|
|
-- Error, rather than warning, or in a body, so we do not
|
|
-- need to force visibility for client (error will be
|
|
-- output in any case, and this is the situation in which
|
|
-- we do not want a client to get a warning, since the
|
|
-- warning is in the body or the spec private part.
|
|
|
|
else
|
|
if Cont = False then
|
|
Error_Msg_N ("<~", Arg1);
|
|
Cont := True;
|
|
else
|
|
Error_Msg_N ("\<~", Arg1);
|
|
end if;
|
|
end if;
|
|
|
|
exit when Ptr > Len;
|
|
end loop;
|
|
end;
|
|
end if;
|
|
end if;
|
|
end Process_Compile_Time_Warning_Or_Error;
|
|
|
|
------------------------
|
|
-- Process_Convention --
|
|
------------------------
|
|
|
|
procedure Process_Convention
|
|
(C : out Convention_Id;
|
|
Ent : out Entity_Id)
|
|
is
|
|
Id : Node_Id;
|
|
E : Entity_Id;
|
|
E1 : Entity_Id;
|
|
Cname : Name_Id;
|
|
Comp_Unit : Unit_Number_Type;
|
|
|
|
procedure Set_Convention_From_Pragma (E : Entity_Id);
|
|
-- Set convention in entity E, and also flag that the entity has a
|
|
-- convention pragma. If entity is for a private or incomplete type,
|
|
-- also set convention and flag on underlying type. This procedure
|
|
-- also deals with the special case of C_Pass_By_Copy convention.
|
|
|
|
--------------------------------
|
|
-- Set_Convention_From_Pragma --
|
|
--------------------------------
|
|
|
|
procedure Set_Convention_From_Pragma (E : Entity_Id) is
|
|
begin
|
|
-- Ada 2005 (AI-430): Check invalid attempt to change convention
|
|
-- for an overridden dispatching operation. Technically this is
|
|
-- an amendment and should only be done in Ada 2005 mode. However,
|
|
-- this is clearly a mistake, since the problem that is addressed
|
|
-- by this AI is that there is a clear gap in the RM!
|
|
|
|
if Is_Dispatching_Operation (E)
|
|
and then Present (Overridden_Operation (E))
|
|
and then C /= Convention (Overridden_Operation (E))
|
|
then
|
|
Error_Pragma_Arg
|
|
("cannot change convention for " &
|
|
"overridden dispatching operation",
|
|
Arg1);
|
|
end if;
|
|
|
|
-- Set the convention
|
|
|
|
Set_Convention (E, C);
|
|
Set_Has_Convention_Pragma (E);
|
|
|
|
if Is_Incomplete_Or_Private_Type (E) then
|
|
Set_Convention (Underlying_Type (E), C);
|
|
Set_Has_Convention_Pragma (Underlying_Type (E), True);
|
|
end if;
|
|
|
|
-- A class-wide type should inherit the convention of the specific
|
|
-- root type (although this isn't specified clearly by the RM).
|
|
|
|
if Is_Type (E) and then Present (Class_Wide_Type (E)) then
|
|
Set_Convention (Class_Wide_Type (E), C);
|
|
end if;
|
|
|
|
-- If the entity is a record type, then check for special case of
|
|
-- C_Pass_By_Copy, which is treated the same as C except that the
|
|
-- special record flag is set. This convention is only permitted
|
|
-- on record types (see AI95-00131).
|
|
|
|
if Cname = Name_C_Pass_By_Copy then
|
|
if Is_Record_Type (E) then
|
|
Set_C_Pass_By_Copy (Base_Type (E));
|
|
elsif Is_Incomplete_Or_Private_Type (E)
|
|
and then Is_Record_Type (Underlying_Type (E))
|
|
then
|
|
Set_C_Pass_By_Copy (Base_Type (Underlying_Type (E)));
|
|
else
|
|
Error_Pragma_Arg
|
|
("C_Pass_By_Copy convention allowed only for record type",
|
|
Arg2);
|
|
end if;
|
|
end if;
|
|
|
|
-- If the entity is a derived boolean type, check for the special
|
|
-- case of convention C, C++, or Fortran, where we consider any
|
|
-- nonzero value to represent true.
|
|
|
|
if Is_Discrete_Type (E)
|
|
and then Root_Type (Etype (E)) = Standard_Boolean
|
|
and then
|
|
(C = Convention_C
|
|
or else
|
|
C = Convention_CPP
|
|
or else
|
|
C = Convention_Fortran)
|
|
then
|
|
Set_Nonzero_Is_True (Base_Type (E));
|
|
end if;
|
|
end Set_Convention_From_Pragma;
|
|
|
|
-- Start of processing for Process_Convention
|
|
|
|
begin
|
|
Check_At_Least_N_Arguments (2);
|
|
Check_Optional_Identifier (Arg1, Name_Convention);
|
|
Check_Arg_Is_Identifier (Arg1);
|
|
Cname := Chars (Expression (Arg1));
|
|
|
|
-- C_Pass_By_Copy is treated as a synonym for convention C (this is
|
|
-- tested again below to set the critical flag).
|
|
if Cname = Name_C_Pass_By_Copy then
|
|
C := Convention_C;
|
|
|
|
-- Otherwise we must have something in the standard convention list
|
|
|
|
elsif Is_Convention_Name (Cname) then
|
|
C := Get_Convention_Id (Chars (Expression (Arg1)));
|
|
|
|
-- In DEC VMS, it seems that there is an undocumented feature that
|
|
-- any unrecognized convention is treated as the default, which for
|
|
-- us is convention C. It does not seem so terrible to do this
|
|
-- unconditionally, silently in the VMS case, and with a warning
|
|
-- in the non-VMS case.
|
|
|
|
else
|
|
if Warn_On_Export_Import and not OpenVMS_On_Target then
|
|
Error_Msg_N
|
|
("?unrecognized convention name, C assumed",
|
|
Expression (Arg1));
|
|
end if;
|
|
|
|
C := Convention_C;
|
|
end if;
|
|
|
|
Check_Optional_Identifier (Arg2, Name_Entity);
|
|
Check_Arg_Is_Local_Name (Arg2);
|
|
|
|
Id := Expression (Arg2);
|
|
Analyze (Id);
|
|
|
|
if not Is_Entity_Name (Id) then
|
|
Error_Pragma_Arg ("entity name required", Arg2);
|
|
end if;
|
|
|
|
E := Entity (Id);
|
|
|
|
-- Set entity to return
|
|
|
|
Ent := E;
|
|
|
|
-- Go to renamed subprogram if present, since convention applies to
|
|
-- the actual renamed entity, not to the renaming entity. If the
|
|
-- subprogram is inherited, go to parent subprogram.
|
|
|
|
if Is_Subprogram (E)
|
|
and then Present (Alias (E))
|
|
then
|
|
if Nkind (Parent (Declaration_Node (E))) =
|
|
N_Subprogram_Renaming_Declaration
|
|
then
|
|
if Scope (E) /= Scope (Alias (E)) then
|
|
Error_Pragma_Ref
|
|
("cannot apply pragma% to non-local entity&#", E);
|
|
end if;
|
|
|
|
E := Alias (E);
|
|
|
|
elsif Nkind_In (Parent (E), N_Full_Type_Declaration,
|
|
N_Private_Extension_Declaration)
|
|
and then Scope (E) = Scope (Alias (E))
|
|
then
|
|
E := Alias (E);
|
|
|
|
-- Return the parent subprogram the entity was inherited from
|
|
|
|
Ent := E;
|
|
end if;
|
|
end if;
|
|
|
|
-- Check that we are not applying this to a specless body
|
|
|
|
if Is_Subprogram (E)
|
|
and then Nkind (Parent (Declaration_Node (E))) = N_Subprogram_Body
|
|
then
|
|
Error_Pragma
|
|
("pragma% requires separate spec and must come before body");
|
|
end if;
|
|
|
|
-- Check that we are not applying this to a named constant
|
|
|
|
if Ekind (E) = E_Named_Integer
|
|
or else
|
|
Ekind (E) = E_Named_Real
|
|
then
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N
|
|
("cannot apply pragma% to named constant!",
|
|
Get_Pragma_Arg (Arg2));
|
|
Error_Pragma_Arg
|
|
("\supply appropriate type for&!", Arg2);
|
|
end if;
|
|
|
|
if Ekind (E) = E_Enumeration_Literal then
|
|
Error_Pragma ("enumeration literal not allowed for pragma%");
|
|
end if;
|
|
|
|
-- Check for rep item appearing too early or too late
|
|
|
|
if Etype (E) = Any_Type
|
|
or else Rep_Item_Too_Early (E, N)
|
|
then
|
|
raise Pragma_Exit;
|
|
else
|
|
E := Underlying_Type (E);
|
|
end if;
|
|
|
|
if Rep_Item_Too_Late (E, N) then
|
|
raise Pragma_Exit;
|
|
end if;
|
|
|
|
if Has_Convention_Pragma (E) then
|
|
Error_Pragma_Arg
|
|
("at most one Convention/Export/Import pragma is allowed", Arg2);
|
|
|
|
elsif Convention (E) = Convention_Protected
|
|
or else Ekind (Scope (E)) = E_Protected_Type
|
|
then
|
|
Error_Pragma_Arg
|
|
("a protected operation cannot be given a different convention",
|
|
Arg2);
|
|
end if;
|
|
|
|
-- For Intrinsic, a subprogram is required
|
|
|
|
if C = Convention_Intrinsic
|
|
and then not Is_Subprogram (E)
|
|
and then not Is_Generic_Subprogram (E)
|
|
then
|
|
Error_Pragma_Arg
|
|
("second argument of pragma% must be a subprogram", Arg2);
|
|
end if;
|
|
|
|
-- For Stdcall, a subprogram, variable or subprogram type is required
|
|
|
|
if C = Convention_Stdcall
|
|
and then not Is_Subprogram (E)
|
|
and then not Is_Generic_Subprogram (E)
|
|
and then Ekind (E) /= E_Variable
|
|
and then not
|
|
(Is_Access_Type (E)
|
|
and then Ekind (Designated_Type (E)) = E_Subprogram_Type)
|
|
then
|
|
Error_Pragma_Arg
|
|
("second argument of pragma% must be subprogram (type)",
|
|
Arg2);
|
|
end if;
|
|
|
|
if not Is_Subprogram (E)
|
|
and then not Is_Generic_Subprogram (E)
|
|
then
|
|
Set_Convention_From_Pragma (E);
|
|
|
|
if Is_Type (E) then
|
|
|
|
Check_First_Subtype (Arg2);
|
|
Set_Convention_From_Pragma (Base_Type (E));
|
|
|
|
-- For subprograms, we must set the convention on the
|
|
-- internally generated directly designated type as well.
|
|
|
|
if Ekind (E) = E_Access_Subprogram_Type then
|
|
Set_Convention_From_Pragma (Directly_Designated_Type (E));
|
|
end if;
|
|
end if;
|
|
|
|
-- For the subprogram case, set proper convention for all homonyms
|
|
-- in same scope and the same declarative part, i.e. the same
|
|
-- compilation unit.
|
|
|
|
else
|
|
Comp_Unit := Get_Source_Unit (E);
|
|
Set_Convention_From_Pragma (E);
|
|
|
|
-- Treat a pragma Import as an implicit body, for GPS use
|
|
|
|
if Prag_Id = Pragma_Import then
|
|
Generate_Reference (E, Id, 'b');
|
|
end if;
|
|
|
|
-- Loop through the homonyms of the pragma argument's entity
|
|
|
|
E1 := Ent;
|
|
loop
|
|
E1 := Homonym (E1);
|
|
exit when No (E1) or else Scope (E1) /= Current_Scope;
|
|
|
|
-- Do not set the pragma on inherited operations or on formal
|
|
-- subprograms.
|
|
|
|
if Comes_From_Source (E1)
|
|
and then Comp_Unit = Get_Source_Unit (E1)
|
|
and then not Is_Formal_Subprogram (E1)
|
|
and then Nkind (Original_Node (Parent (E1))) /=
|
|
N_Full_Type_Declaration
|
|
then
|
|
if Present (Alias (E1))
|
|
and then Scope (E1) /= Scope (Alias (E1))
|
|
then
|
|
Error_Pragma_Ref
|
|
("cannot apply pragma% to non-local entity& declared#",
|
|
E1);
|
|
end if;
|
|
|
|
Set_Convention_From_Pragma (E1);
|
|
|
|
if Prag_Id = Pragma_Import then
|
|
Generate_Reference (E1, Id, 'b');
|
|
end if;
|
|
end if;
|
|
end loop;
|
|
end if;
|
|
end Process_Convention;
|
|
|
|
-----------------------------------------------------
|
|
-- Process_Extended_Import_Export_Exception_Pragma --
|
|
-----------------------------------------------------
|
|
|
|
procedure Process_Extended_Import_Export_Exception_Pragma
|
|
(Arg_Internal : Node_Id;
|
|
Arg_External : Node_Id;
|
|
Arg_Form : Node_Id;
|
|
Arg_Code : Node_Id)
|
|
is
|
|
Def_Id : Entity_Id;
|
|
Code_Val : Uint;
|
|
|
|
begin
|
|
if not OpenVMS_On_Target then
|
|
Error_Pragma
|
|
("?pragma% ignored (applies only to Open'V'M'S)");
|
|
end if;
|
|
|
|
Process_Extended_Import_Export_Internal_Arg (Arg_Internal);
|
|
Def_Id := Entity (Arg_Internal);
|
|
|
|
if Ekind (Def_Id) /= E_Exception then
|
|
Error_Pragma_Arg
|
|
("pragma% must refer to declared exception", Arg_Internal);
|
|
end if;
|
|
|
|
Set_Extended_Import_Export_External_Name (Def_Id, Arg_External);
|
|
|
|
if Present (Arg_Form) then
|
|
Check_Arg_Is_One_Of (Arg_Form, Name_Ada, Name_VMS);
|
|
end if;
|
|
|
|
if Present (Arg_Form)
|
|
and then Chars (Arg_Form) = Name_Ada
|
|
then
|
|
null;
|
|
else
|
|
Set_Is_VMS_Exception (Def_Id);
|
|
Set_Exception_Code (Def_Id, No_Uint);
|
|
end if;
|
|
|
|
if Present (Arg_Code) then
|
|
if not Is_VMS_Exception (Def_Id) then
|
|
Error_Pragma_Arg
|
|
("Code option for pragma% not allowed for Ada case",
|
|
Arg_Code);
|
|
end if;
|
|
|
|
Check_Arg_Is_Static_Expression (Arg_Code, Any_Integer);
|
|
Code_Val := Expr_Value (Arg_Code);
|
|
|
|
if not UI_Is_In_Int_Range (Code_Val) then
|
|
Error_Pragma_Arg
|
|
("Code option for pragma% must be in 32-bit range",
|
|
Arg_Code);
|
|
|
|
else
|
|
Set_Exception_Code (Def_Id, Code_Val);
|
|
end if;
|
|
end if;
|
|
end Process_Extended_Import_Export_Exception_Pragma;
|
|
|
|
-------------------------------------------------
|
|
-- Process_Extended_Import_Export_Internal_Arg --
|
|
-------------------------------------------------
|
|
|
|
procedure Process_Extended_Import_Export_Internal_Arg
|
|
(Arg_Internal : Node_Id := Empty)
|
|
is
|
|
begin
|
|
if No (Arg_Internal) then
|
|
Error_Pragma ("Internal parameter required for pragma%");
|
|
end if;
|
|
|
|
if Nkind (Arg_Internal) = N_Identifier then
|
|
null;
|
|
|
|
elsif Nkind (Arg_Internal) = N_Operator_Symbol
|
|
and then (Prag_Id = Pragma_Import_Function
|
|
or else
|
|
Prag_Id = Pragma_Export_Function)
|
|
then
|
|
null;
|
|
|
|
else
|
|
Error_Pragma_Arg
|
|
("wrong form for Internal parameter for pragma%", Arg_Internal);
|
|
end if;
|
|
|
|
Check_Arg_Is_Local_Name (Arg_Internal);
|
|
end Process_Extended_Import_Export_Internal_Arg;
|
|
|
|
--------------------------------------------------
|
|
-- Process_Extended_Import_Export_Object_Pragma --
|
|
--------------------------------------------------
|
|
|
|
procedure Process_Extended_Import_Export_Object_Pragma
|
|
(Arg_Internal : Node_Id;
|
|
Arg_External : Node_Id;
|
|
Arg_Size : Node_Id)
|
|
is
|
|
Def_Id : Entity_Id;
|
|
|
|
begin
|
|
Process_Extended_Import_Export_Internal_Arg (Arg_Internal);
|
|
Def_Id := Entity (Arg_Internal);
|
|
|
|
if Ekind (Def_Id) /= E_Constant
|
|
and then Ekind (Def_Id) /= E_Variable
|
|
then
|
|
Error_Pragma_Arg
|
|
("pragma% must designate an object", Arg_Internal);
|
|
end if;
|
|
|
|
if Has_Rep_Pragma (Def_Id, Name_Common_Object)
|
|
or else
|
|
Has_Rep_Pragma (Def_Id, Name_Psect_Object)
|
|
then
|
|
Error_Pragma_Arg
|
|
("previous Common/Psect_Object applies, pragma % not permitted",
|
|
Arg_Internal);
|
|
end if;
|
|
|
|
if Rep_Item_Too_Late (Def_Id, N) then
|
|
raise Pragma_Exit;
|
|
end if;
|
|
|
|
Set_Extended_Import_Export_External_Name (Def_Id, Arg_External);
|
|
|
|
if Present (Arg_Size) then
|
|
Check_Arg_Is_External_Name (Arg_Size);
|
|
end if;
|
|
|
|
-- Export_Object case
|
|
|
|
if Prag_Id = Pragma_Export_Object then
|
|
if not Is_Library_Level_Entity (Def_Id) then
|
|
Error_Pragma_Arg
|
|
("argument for pragma% must be library level entity",
|
|
Arg_Internal);
|
|
end if;
|
|
|
|
if Ekind (Current_Scope) = E_Generic_Package then
|
|
Error_Pragma ("pragma& cannot appear in a generic unit");
|
|
end if;
|
|
|
|
if not Size_Known_At_Compile_Time (Etype (Def_Id)) then
|
|
Error_Pragma_Arg
|
|
("exported object must have compile time known size",
|
|
Arg_Internal);
|
|
end if;
|
|
|
|
if Warn_On_Export_Import and then Is_Exported (Def_Id) then
|
|
Error_Msg_N ("?duplicate Export_Object pragma", N);
|
|
else
|
|
Set_Exported (Def_Id, Arg_Internal);
|
|
end if;
|
|
|
|
-- Import_Object case
|
|
|
|
else
|
|
if Is_Concurrent_Type (Etype (Def_Id)) then
|
|
Error_Pragma_Arg
|
|
("cannot use pragma% for task/protected object",
|
|
Arg_Internal);
|
|
end if;
|
|
|
|
if Ekind (Def_Id) = E_Constant then
|
|
Error_Pragma_Arg
|
|
("cannot import a constant", Arg_Internal);
|
|
end if;
|
|
|
|
if Warn_On_Export_Import
|
|
and then Has_Discriminants (Etype (Def_Id))
|
|
then
|
|
Error_Msg_N
|
|
("imported value must be initialized?", Arg_Internal);
|
|
end if;
|
|
|
|
if Warn_On_Export_Import
|
|
and then Is_Access_Type (Etype (Def_Id))
|
|
then
|
|
Error_Pragma_Arg
|
|
("cannot import object of an access type?", Arg_Internal);
|
|
end if;
|
|
|
|
if Warn_On_Export_Import
|
|
and then Is_Imported (Def_Id)
|
|
then
|
|
Error_Msg_N
|
|
("?duplicate Import_Object pragma", N);
|
|
|
|
-- Check for explicit initialization present. Note that an
|
|
-- initialization generated by the code generator, e.g. for an
|
|
-- access type, does not count here.
|
|
|
|
elsif Present (Expression (Parent (Def_Id)))
|
|
and then
|
|
Comes_From_Source
|
|
(Original_Node (Expression (Parent (Def_Id))))
|
|
then
|
|
Error_Msg_Sloc := Sloc (Def_Id);
|
|
Error_Pragma_Arg
|
|
("imported entities cannot be initialized (RM B.1(24))",
|
|
"\no initialization allowed for & declared#", Arg1);
|
|
else
|
|
Set_Imported (Def_Id);
|
|
Note_Possible_Modification (Arg_Internal, Sure => False);
|
|
end if;
|
|
end if;
|
|
end Process_Extended_Import_Export_Object_Pragma;
|
|
|
|
------------------------------------------------------
|
|
-- Process_Extended_Import_Export_Subprogram_Pragma --
|
|
------------------------------------------------------
|
|
|
|
procedure Process_Extended_Import_Export_Subprogram_Pragma
|
|
(Arg_Internal : Node_Id;
|
|
Arg_External : Node_Id;
|
|
Arg_Parameter_Types : Node_Id;
|
|
Arg_Result_Type : Node_Id := Empty;
|
|
Arg_Mechanism : Node_Id;
|
|
Arg_Result_Mechanism : Node_Id := Empty;
|
|
Arg_First_Optional_Parameter : Node_Id := Empty)
|
|
is
|
|
Ent : Entity_Id;
|
|
Def_Id : Entity_Id;
|
|
Hom_Id : Entity_Id;
|
|
Formal : Entity_Id;
|
|
Ambiguous : Boolean;
|
|
Match : Boolean;
|
|
Dval : Node_Id;
|
|
|
|
function Same_Base_Type
|
|
(Ptype : Node_Id;
|
|
Formal : Entity_Id) return Boolean;
|
|
-- Determines if Ptype references the type of Formal. Note that only
|
|
-- the base types need to match according to the spec. Ptype here is
|
|
-- the argument from the pragma, which is either a type name, or an
|
|
-- access attribute.
|
|
|
|
--------------------
|
|
-- Same_Base_Type --
|
|
--------------------
|
|
|
|
function Same_Base_Type
|
|
(Ptype : Node_Id;
|
|
Formal : Entity_Id) return Boolean
|
|
is
|
|
Ftyp : constant Entity_Id := Base_Type (Etype (Formal));
|
|
Pref : Node_Id;
|
|
|
|
begin
|
|
-- Case where pragma argument is typ'Access
|
|
|
|
if Nkind (Ptype) = N_Attribute_Reference
|
|
and then Attribute_Name (Ptype) = Name_Access
|
|
then
|
|
Pref := Prefix (Ptype);
|
|
Find_Type (Pref);
|
|
|
|
if not Is_Entity_Name (Pref)
|
|
or else Entity (Pref) = Any_Type
|
|
then
|
|
raise Pragma_Exit;
|
|
end if;
|
|
|
|
-- We have a match if the corresponding argument is of an
|
|
-- anonymous access type, and its designated type matches the
|
|
-- type of the prefix of the access attribute
|
|
|
|
return Ekind (Ftyp) = E_Anonymous_Access_Type
|
|
and then Base_Type (Entity (Pref)) =
|
|
Base_Type (Etype (Designated_Type (Ftyp)));
|
|
|
|
-- Case where pragma argument is a type name
|
|
|
|
else
|
|
Find_Type (Ptype);
|
|
|
|
if not Is_Entity_Name (Ptype)
|
|
or else Entity (Ptype) = Any_Type
|
|
then
|
|
raise Pragma_Exit;
|
|
end if;
|
|
|
|
-- We have a match if the corresponding argument is of the type
|
|
-- given in the pragma (comparing base types)
|
|
|
|
return Base_Type (Entity (Ptype)) = Ftyp;
|
|
end if;
|
|
end Same_Base_Type;
|
|
|
|
-- Start of processing for
|
|
-- Process_Extended_Import_Export_Subprogram_Pragma
|
|
|
|
begin
|
|
Process_Extended_Import_Export_Internal_Arg (Arg_Internal);
|
|
Ent := Empty;
|
|
Ambiguous := False;
|
|
|
|
-- Loop through homonyms (overloadings) of the entity
|
|
|
|
Hom_Id := Entity (Arg_Internal);
|
|
while Present (Hom_Id) loop
|
|
Def_Id := Get_Base_Subprogram (Hom_Id);
|
|
|
|
-- We need a subprogram in the current scope
|
|
|
|
if not Is_Subprogram (Def_Id)
|
|
or else Scope (Def_Id) /= Current_Scope
|
|
then
|
|
null;
|
|
|
|
else
|
|
Match := True;
|
|
|
|
-- Pragma cannot apply to subprogram body
|
|
|
|
if Is_Subprogram (Def_Id)
|
|
and then Nkind (Parent (Declaration_Node (Def_Id))) =
|
|
N_Subprogram_Body
|
|
then
|
|
Error_Pragma
|
|
("pragma% requires separate spec"
|
|
& " and must come before body");
|
|
end if;
|
|
|
|
-- Test result type if given, note that the result type
|
|
-- parameter can only be present for the function cases.
|
|
|
|
if Present (Arg_Result_Type)
|
|
and then not Same_Base_Type (Arg_Result_Type, Def_Id)
|
|
then
|
|
Match := False;
|
|
|
|
elsif Etype (Def_Id) /= Standard_Void_Type
|
|
and then
|
|
(Pname = Name_Export_Procedure
|
|
or else
|
|
Pname = Name_Import_Procedure)
|
|
then
|
|
Match := False;
|
|
|
|
-- Test parameter types if given. Note that this parameter
|
|
-- has not been analyzed (and must not be, since it is
|
|
-- semantic nonsense), so we get it as the parser left it.
|
|
|
|
elsif Present (Arg_Parameter_Types) then
|
|
Check_Matching_Types : declare
|
|
Formal : Entity_Id;
|
|
Ptype : Node_Id;
|
|
|
|
begin
|
|
Formal := First_Formal (Def_Id);
|
|
|
|
if Nkind (Arg_Parameter_Types) = N_Null then
|
|
if Present (Formal) then
|
|
Match := False;
|
|
end if;
|
|
|
|
-- A list of one type, e.g. (List) is parsed as
|
|
-- a parenthesized expression.
|
|
|
|
elsif Nkind (Arg_Parameter_Types) /= N_Aggregate
|
|
and then Paren_Count (Arg_Parameter_Types) = 1
|
|
then
|
|
if No (Formal)
|
|
or else Present (Next_Formal (Formal))
|
|
then
|
|
Match := False;
|
|
else
|
|
Match :=
|
|
Same_Base_Type (Arg_Parameter_Types, Formal);
|
|
end if;
|
|
|
|
-- A list of more than one type is parsed as a aggregate
|
|
|
|
elsif Nkind (Arg_Parameter_Types) = N_Aggregate
|
|
and then Paren_Count (Arg_Parameter_Types) = 0
|
|
then
|
|
Ptype := First (Expressions (Arg_Parameter_Types));
|
|
while Present (Ptype) or else Present (Formal) loop
|
|
if No (Ptype)
|
|
or else No (Formal)
|
|
or else not Same_Base_Type (Ptype, Formal)
|
|
then
|
|
Match := False;
|
|
exit;
|
|
else
|
|
Next_Formal (Formal);
|
|
Next (Ptype);
|
|
end if;
|
|
end loop;
|
|
|
|
-- Anything else is of the wrong form
|
|
|
|
else
|
|
Error_Pragma_Arg
|
|
("wrong form for Parameter_Types parameter",
|
|
Arg_Parameter_Types);
|
|
end if;
|
|
end Check_Matching_Types;
|
|
end if;
|
|
|
|
-- Match is now False if the entry we found did not match
|
|
-- either a supplied Parameter_Types or Result_Types argument
|
|
|
|
if Match then
|
|
if No (Ent) then
|
|
Ent := Def_Id;
|
|
|
|
-- Ambiguous case, the flag Ambiguous shows if we already
|
|
-- detected this and output the initial messages.
|
|
|
|
else
|
|
if not Ambiguous then
|
|
Ambiguous := True;
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N
|
|
("pragma% does not uniquely identify subprogram!",
|
|
N);
|
|
Error_Msg_Sloc := Sloc (Ent);
|
|
Error_Msg_N ("matching subprogram #!", N);
|
|
Ent := Empty;
|
|
end if;
|
|
|
|
Error_Msg_Sloc := Sloc (Def_Id);
|
|
Error_Msg_N ("matching subprogram #!", N);
|
|
end if;
|
|
end if;
|
|
end if;
|
|
|
|
Hom_Id := Homonym (Hom_Id);
|
|
end loop;
|
|
|
|
-- See if we found an entry
|
|
|
|
if No (Ent) then
|
|
if not Ambiguous then
|
|
if Is_Generic_Subprogram (Entity (Arg_Internal)) then
|
|
Error_Pragma
|
|
("pragma% cannot be given for generic subprogram");
|
|
else
|
|
Error_Pragma
|
|
("pragma% does not identify local subprogram");
|
|
end if;
|
|
end if;
|
|
|
|
return;
|
|
end if;
|
|
|
|
-- Import pragmas must be for imported entities
|
|
|
|
if Prag_Id = Pragma_Import_Function
|
|
or else
|
|
Prag_Id = Pragma_Import_Procedure
|
|
or else
|
|
Prag_Id = Pragma_Import_Valued_Procedure
|
|
then
|
|
if not Is_Imported (Ent) then
|
|
Error_Pragma -- CODEFIX???
|
|
("pragma Import or Interface must precede pragma%");
|
|
end if;
|
|
|
|
-- Here we have the Export case which can set the entity as exported
|
|
|
|
-- But does not do so if the specified external name is null, since
|
|
-- that is taken as a signal in DEC Ada 83 (with which we want to be
|
|
-- compatible) to request no external name.
|
|
|
|
elsif Nkind (Arg_External) = N_String_Literal
|
|
and then String_Length (Strval (Arg_External)) = 0
|
|
then
|
|
null;
|
|
|
|
-- In all other cases, set entity as exported
|
|
|
|
else
|
|
Set_Exported (Ent, Arg_Internal);
|
|
end if;
|
|
|
|
-- Special processing for Valued_Procedure cases
|
|
|
|
if Prag_Id = Pragma_Import_Valued_Procedure
|
|
or else
|
|
Prag_Id = Pragma_Export_Valued_Procedure
|
|
then
|
|
Formal := First_Formal (Ent);
|
|
|
|
if No (Formal) then
|
|
Error_Pragma ("at least one parameter required for pragma%");
|
|
|
|
elsif Ekind (Formal) /= E_Out_Parameter then
|
|
Error_Pragma ("first parameter must have mode out for pragma%");
|
|
|
|
else
|
|
Set_Is_Valued_Procedure (Ent);
|
|
end if;
|
|
end if;
|
|
|
|
Set_Extended_Import_Export_External_Name (Ent, Arg_External);
|
|
|
|
-- Process Result_Mechanism argument if present. We have already
|
|
-- checked that this is only allowed for the function case.
|
|
|
|
if Present (Arg_Result_Mechanism) then
|
|
Set_Mechanism_Value (Ent, Arg_Result_Mechanism);
|
|
end if;
|
|
|
|
-- Process Mechanism parameter if present. Note that this parameter
|
|
-- is not analyzed, and must not be analyzed since it is semantic
|
|
-- nonsense, so we get it in exactly as the parser left it.
|
|
|
|
if Present (Arg_Mechanism) then
|
|
declare
|
|
Formal : Entity_Id;
|
|
Massoc : Node_Id;
|
|
Mname : Node_Id;
|
|
Choice : Node_Id;
|
|
|
|
begin
|
|
-- A single mechanism association without a formal parameter
|
|
-- name is parsed as a parenthesized expression. All other
|
|
-- cases are parsed as aggregates, so we rewrite the single
|
|
-- parameter case as an aggregate for consistency.
|
|
|
|
if Nkind (Arg_Mechanism) /= N_Aggregate
|
|
and then Paren_Count (Arg_Mechanism) = 1
|
|
then
|
|
Rewrite (Arg_Mechanism,
|
|
Make_Aggregate (Sloc (Arg_Mechanism),
|
|
Expressions => New_List (
|
|
Relocate_Node (Arg_Mechanism))));
|
|
end if;
|
|
|
|
-- Case of only mechanism name given, applies to all formals
|
|
|
|
if Nkind (Arg_Mechanism) /= N_Aggregate then
|
|
Formal := First_Formal (Ent);
|
|
while Present (Formal) loop
|
|
Set_Mechanism_Value (Formal, Arg_Mechanism);
|
|
Next_Formal (Formal);
|
|
end loop;
|
|
|
|
-- Case of list of mechanism associations given
|
|
|
|
else
|
|
if Null_Record_Present (Arg_Mechanism) then
|
|
Error_Pragma_Arg
|
|
("inappropriate form for Mechanism parameter",
|
|
Arg_Mechanism);
|
|
end if;
|
|
|
|
-- Deal with positional ones first
|
|
|
|
Formal := First_Formal (Ent);
|
|
|
|
if Present (Expressions (Arg_Mechanism)) then
|
|
Mname := First (Expressions (Arg_Mechanism));
|
|
while Present (Mname) loop
|
|
if No (Formal) then
|
|
Error_Pragma_Arg
|
|
("too many mechanism associations", Mname);
|
|
end if;
|
|
|
|
Set_Mechanism_Value (Formal, Mname);
|
|
Next_Formal (Formal);
|
|
Next (Mname);
|
|
end loop;
|
|
end if;
|
|
|
|
-- Deal with named entries
|
|
|
|
if Present (Component_Associations (Arg_Mechanism)) then
|
|
Massoc := First (Component_Associations (Arg_Mechanism));
|
|
while Present (Massoc) loop
|
|
Choice := First (Choices (Massoc));
|
|
|
|
if Nkind (Choice) /= N_Identifier
|
|
or else Present (Next (Choice))
|
|
then
|
|
Error_Pragma_Arg
|
|
("incorrect form for mechanism association",
|
|
Massoc);
|
|
end if;
|
|
|
|
Formal := First_Formal (Ent);
|
|
loop
|
|
if No (Formal) then
|
|
Error_Pragma_Arg
|
|
("parameter name & not present", Choice);
|
|
end if;
|
|
|
|
if Chars (Choice) = Chars (Formal) then
|
|
Set_Mechanism_Value
|
|
(Formal, Expression (Massoc));
|
|
|
|
-- Set entity on identifier for ASIS
|
|
|
|
Set_Entity (Choice, Formal);
|
|
|
|
exit;
|
|
end if;
|
|
|
|
Next_Formal (Formal);
|
|
end loop;
|
|
|
|
Next (Massoc);
|
|
end loop;
|
|
end if;
|
|
end if;
|
|
end;
|
|
end if;
|
|
|
|
-- Process First_Optional_Parameter argument if present. We have
|
|
-- already checked that this is only allowed for the Import case.
|
|
|
|
if Present (Arg_First_Optional_Parameter) then
|
|
if Nkind (Arg_First_Optional_Parameter) /= N_Identifier then
|
|
Error_Pragma_Arg
|
|
("first optional parameter must be formal parameter name",
|
|
Arg_First_Optional_Parameter);
|
|
end if;
|
|
|
|
Formal := First_Formal (Ent);
|
|
loop
|
|
if No (Formal) then
|
|
Error_Pragma_Arg
|
|
("specified formal parameter& not found",
|
|
Arg_First_Optional_Parameter);
|
|
end if;
|
|
|
|
exit when Chars (Formal) =
|
|
Chars (Arg_First_Optional_Parameter);
|
|
|
|
Next_Formal (Formal);
|
|
end loop;
|
|
|
|
Set_First_Optional_Parameter (Ent, Formal);
|
|
|
|
-- Check specified and all remaining formals have right form
|
|
|
|
while Present (Formal) loop
|
|
if Ekind (Formal) /= E_In_Parameter then
|
|
Error_Msg_NE
|
|
("optional formal& is not of mode in!",
|
|
Arg_First_Optional_Parameter, Formal);
|
|
|
|
else
|
|
Dval := Default_Value (Formal);
|
|
|
|
if No (Dval) then
|
|
Error_Msg_NE
|
|
("optional formal& does not have default value!",
|
|
Arg_First_Optional_Parameter, Formal);
|
|
|
|
elsif Compile_Time_Known_Value_Or_Aggr (Dval) then
|
|
null;
|
|
|
|
else
|
|
Error_Msg_FE
|
|
("default value for optional formal& is non-static!",
|
|
Arg_First_Optional_Parameter, Formal);
|
|
end if;
|
|
end if;
|
|
|
|
Set_Is_Optional_Parameter (Formal);
|
|
Next_Formal (Formal);
|
|
end loop;
|
|
end if;
|
|
end Process_Extended_Import_Export_Subprogram_Pragma;
|
|
|
|
--------------------------
|
|
-- Process_Generic_List --
|
|
--------------------------
|
|
|
|
procedure Process_Generic_List is
|
|
Arg : Node_Id;
|
|
Exp : Node_Id;
|
|
|
|
begin
|
|
Check_No_Identifiers;
|
|
Check_At_Least_N_Arguments (1);
|
|
|
|
Arg := Arg1;
|
|
while Present (Arg) loop
|
|
Exp := Expression (Arg);
|
|
Analyze (Exp);
|
|
|
|
if not Is_Entity_Name (Exp)
|
|
or else
|
|
(not Is_Generic_Instance (Entity (Exp))
|
|
and then
|
|
not Is_Generic_Unit (Entity (Exp)))
|
|
then
|
|
Error_Pragma_Arg
|
|
("pragma% argument must be name of generic unit/instance",
|
|
Arg);
|
|
end if;
|
|
|
|
Next (Arg);
|
|
end loop;
|
|
end Process_Generic_List;
|
|
|
|
---------------------------------
|
|
-- Process_Import_Or_Interface --
|
|
---------------------------------
|
|
|
|
procedure Process_Import_Or_Interface is
|
|
C : Convention_Id;
|
|
Def_Id : Entity_Id;
|
|
Hom_Id : Entity_Id;
|
|
|
|
begin
|
|
Process_Convention (C, Def_Id);
|
|
Kill_Size_Check_Code (Def_Id);
|
|
Note_Possible_Modification (Expression (Arg2), Sure => False);
|
|
|
|
if Ekind (Def_Id) = E_Variable
|
|
or else
|
|
Ekind (Def_Id) = E_Constant
|
|
then
|
|
-- We do not permit Import to apply to a renaming declaration
|
|
|
|
if Present (Renamed_Object (Def_Id)) then
|
|
Error_Pragma_Arg
|
|
("pragma% not allowed for object renaming", Arg2);
|
|
|
|
-- User initialization is not allowed for imported object, but
|
|
-- the object declaration may contain a default initialization,
|
|
-- that will be discarded. Note that an explicit initialization
|
|
-- only counts if it comes from source, otherwise it is simply
|
|
-- the code generator making an implicit initialization explicit.
|
|
|
|
elsif Present (Expression (Parent (Def_Id)))
|
|
and then Comes_From_Source (Expression (Parent (Def_Id)))
|
|
then
|
|
Error_Msg_Sloc := Sloc (Def_Id);
|
|
Error_Pragma_Arg
|
|
("no initialization allowed for declaration of& #",
|
|
"\imported entities cannot be initialized (RM B.1(24))",
|
|
Arg2);
|
|
|
|
else
|
|
Set_Imported (Def_Id);
|
|
Process_Interface_Name (Def_Id, Arg3, Arg4);
|
|
|
|
-- Note that we do not set Is_Public here. That's because we
|
|
-- only want to set it if there is no address clause, and we
|
|
-- don't know that yet, so we delay that processing till
|
|
-- freeze time.
|
|
|
|
-- pragma Import completes deferred constants
|
|
|
|
if Ekind (Def_Id) = E_Constant then
|
|
Set_Has_Completion (Def_Id);
|
|
end if;
|
|
|
|
-- It is not possible to import a constant of an unconstrained
|
|
-- array type (e.g. string) because there is no simple way to
|
|
-- write a meaningful subtype for it.
|
|
|
|
if Is_Array_Type (Etype (Def_Id))
|
|
and then not Is_Constrained (Etype (Def_Id))
|
|
then
|
|
Error_Msg_NE
|
|
("imported constant& must have a constrained subtype",
|
|
N, Def_Id);
|
|
end if;
|
|
end if;
|
|
|
|
elsif Is_Subprogram (Def_Id)
|
|
or else Is_Generic_Subprogram (Def_Id)
|
|
then
|
|
-- If the name is overloaded, pragma applies to all of the
|
|
-- denoted entities in the same declarative part.
|
|
|
|
Hom_Id := Def_Id;
|
|
while Present (Hom_Id) loop
|
|
Def_Id := Get_Base_Subprogram (Hom_Id);
|
|
|
|
-- Ignore inherited subprograms because the pragma will
|
|
-- apply to the parent operation, which is the one called.
|
|
|
|
if Is_Overloadable (Def_Id)
|
|
and then Present (Alias (Def_Id))
|
|
then
|
|
null;
|
|
|
|
-- If it is not a subprogram, it must be in an outer scope and
|
|
-- pragma does not apply.
|
|
|
|
elsif not Is_Subprogram (Def_Id)
|
|
and then not Is_Generic_Subprogram (Def_Id)
|
|
then
|
|
null;
|
|
|
|
-- Verify that the homonym is in the same declarative part (not
|
|
-- just the same scope).
|
|
|
|
elsif Parent (Unit_Declaration_Node (Def_Id)) /= Parent (N)
|
|
and then Nkind (Parent (N)) /= N_Compilation_Unit_Aux
|
|
then
|
|
exit;
|
|
|
|
else
|
|
Set_Imported (Def_Id);
|
|
|
|
-- Reject an Import applied to an abstract subprogram
|
|
|
|
if Is_Subprogram (Def_Id)
|
|
and then Is_Abstract_Subprogram (Def_Id)
|
|
then
|
|
Error_Msg_Sloc := Sloc (Def_Id);
|
|
Error_Msg_NE
|
|
("cannot import abstract subprogram& declared#",
|
|
Arg2, Def_Id);
|
|
end if;
|
|
|
|
-- Special processing for Convention_Intrinsic
|
|
|
|
if C = Convention_Intrinsic then
|
|
|
|
-- Link_Name argument not allowed for intrinsic
|
|
|
|
if Present (Arg3)
|
|
and then Chars (Arg3) = Name_Link_Name
|
|
then
|
|
Arg4 := Arg3;
|
|
end if;
|
|
|
|
if Present (Arg4) then
|
|
Error_Pragma_Arg
|
|
("Link_Name argument not allowed for " &
|
|
"Import Intrinsic",
|
|
Arg4);
|
|
end if;
|
|
|
|
Set_Is_Intrinsic_Subprogram (Def_Id);
|
|
|
|
-- If no external name is present, then check that this
|
|
-- is a valid intrinsic subprogram. If an external name
|
|
-- is present, then this is handled by the back end.
|
|
|
|
if No (Arg3) then
|
|
Check_Intrinsic_Subprogram (Def_Id, Expression (Arg2));
|
|
end if;
|
|
end if;
|
|
|
|
-- All interfaced procedures need an external symbol created
|
|
-- for them since they are always referenced from another
|
|
-- object file.
|
|
|
|
Set_Is_Public (Def_Id);
|
|
|
|
-- Verify that the subprogram does not have a completion
|
|
-- through a renaming declaration. For other completions the
|
|
-- pragma appears as a too late representation.
|
|
|
|
declare
|
|
Decl : constant Node_Id := Unit_Declaration_Node (Def_Id);
|
|
|
|
begin
|
|
if Present (Decl)
|
|
and then Nkind (Decl) = N_Subprogram_Declaration
|
|
and then Present (Corresponding_Body (Decl))
|
|
and then Nkind (Unit_Declaration_Node
|
|
(Corresponding_Body (Decl))) =
|
|
N_Subprogram_Renaming_Declaration
|
|
then
|
|
Error_Msg_Sloc := Sloc (Def_Id);
|
|
Error_Msg_NE
|
|
("cannot import&, renaming already provided for " &
|
|
"declaration #", N, Def_Id);
|
|
end if;
|
|
end;
|
|
|
|
Set_Has_Completion (Def_Id);
|
|
Process_Interface_Name (Def_Id, Arg3, Arg4);
|
|
end if;
|
|
|
|
if Is_Compilation_Unit (Hom_Id) then
|
|
|
|
-- Its possible homonyms are not affected by the pragma.
|
|
-- Such homonyms might be present in the context of other
|
|
-- units being compiled.
|
|
|
|
exit;
|
|
|
|
else
|
|
Hom_Id := Homonym (Hom_Id);
|
|
end if;
|
|
end loop;
|
|
|
|
-- When the convention is Java or CIL, we also allow Import to be
|
|
-- given for packages, generic packages, exceptions, record
|
|
-- components, and access to subprograms.
|
|
|
|
elsif (C = Convention_Java or else C = Convention_CIL)
|
|
and then
|
|
(Is_Package_Or_Generic_Package (Def_Id)
|
|
or else Ekind (Def_Id) = E_Exception
|
|
or else Ekind (Def_Id) = E_Access_Subprogram_Type
|
|
or else Nkind (Parent (Def_Id)) = N_Component_Declaration)
|
|
then
|
|
Set_Imported (Def_Id);
|
|
Set_Is_Public (Def_Id);
|
|
Process_Interface_Name (Def_Id, Arg3, Arg4);
|
|
|
|
-- Import a CPP class
|
|
|
|
elsif Is_Record_Type (Def_Id)
|
|
and then C = Convention_CPP
|
|
then
|
|
-- Types treated as CPP classes are treated as limited, but we
|
|
-- don't require them to be declared this way. A warning is
|
|
-- issued to encourage the user to declare them as limited.
|
|
-- This is not an error, for compatibility reasons, because
|
|
-- these types have been supported this way for some time.
|
|
|
|
if not Is_Limited_Type (Def_Id) then
|
|
Error_Msg_N
|
|
("imported 'C'P'P type should be " &
|
|
"explicitly declared limited?",
|
|
Get_Pragma_Arg (Arg2));
|
|
Error_Msg_N
|
|
("\type will be considered limited",
|
|
Get_Pragma_Arg (Arg2));
|
|
end if;
|
|
|
|
Set_Is_CPP_Class (Def_Id);
|
|
Set_Is_Limited_Record (Def_Id);
|
|
|
|
-- Imported CPP types must not have discriminants (because C++
|
|
-- classes do not have discriminants).
|
|
|
|
if Has_Discriminants (Def_Id) then
|
|
Error_Msg_N
|
|
("imported 'C'P'P type cannot have discriminants",
|
|
First (Discriminant_Specifications
|
|
(Declaration_Node (Def_Id))));
|
|
end if;
|
|
|
|
-- Components of imported CPP types must not have default
|
|
-- expressions because the constructor (if any) is on the
|
|
-- C++ side.
|
|
|
|
declare
|
|
Tdef : constant Node_Id :=
|
|
Type_Definition (Declaration_Node (Def_Id));
|
|
Clist : Node_Id;
|
|
Comp : Node_Id;
|
|
|
|
begin
|
|
if Nkind (Tdef) = N_Record_Definition then
|
|
Clist := Component_List (Tdef);
|
|
|
|
else
|
|
pragma Assert (Nkind (Tdef) = N_Derived_Type_Definition);
|
|
Clist := Component_List (Record_Extension_Part (Tdef));
|
|
end if;
|
|
|
|
if Present (Clist) then
|
|
Comp := First (Component_Items (Clist));
|
|
while Present (Comp) loop
|
|
if Present (Expression (Comp)) then
|
|
Error_Msg_N
|
|
("component of imported 'C'P'P type cannot have" &
|
|
" default expression", Expression (Comp));
|
|
end if;
|
|
|
|
Next (Comp);
|
|
end loop;
|
|
end if;
|
|
end;
|
|
|
|
else
|
|
Error_Pragma_Arg
|
|
("second argument of pragma% must be object or subprogram",
|
|
Arg2);
|
|
end if;
|
|
|
|
-- If this pragma applies to a compilation unit, then the unit, which
|
|
-- is a subprogram, does not require (or allow) a body. We also do
|
|
-- not need to elaborate imported procedures.
|
|
|
|
if Nkind (Parent (N)) = N_Compilation_Unit_Aux then
|
|
declare
|
|
Cunit : constant Node_Id := Parent (Parent (N));
|
|
begin
|
|
Set_Body_Required (Cunit, False);
|
|
end;
|
|
end if;
|
|
end Process_Import_Or_Interface;
|
|
|
|
--------------------
|
|
-- Process_Inline --
|
|
--------------------
|
|
|
|
procedure Process_Inline (Active : Boolean) is
|
|
Assoc : Node_Id;
|
|
Decl : Node_Id;
|
|
Subp_Id : Node_Id;
|
|
Subp : Entity_Id;
|
|
Applies : Boolean;
|
|
Effective : Boolean := False;
|
|
|
|
procedure Make_Inline (Subp : Entity_Id);
|
|
-- Subp is the defining unit name of the subprogram declaration. Set
|
|
-- the flag, as well as the flag in the corresponding body, if there
|
|
-- is one present.
|
|
|
|
procedure Set_Inline_Flags (Subp : Entity_Id);
|
|
-- Sets Is_Inlined and Has_Pragma_Inline flags for Subp and also
|
|
-- Has_Pragma_Inline_Always for the Inline_Always case.
|
|
|
|
function Inlining_Not_Possible (Subp : Entity_Id) return Boolean;
|
|
-- Returns True if it can be determined at this stage that inlining
|
|
-- is not possible, for example if the body is available and contains
|
|
-- exception handlers, we prevent inlining, since otherwise we can
|
|
-- get undefined symbols at link time. This function also emits a
|
|
-- warning if front-end inlining is enabled and the pragma appears
|
|
-- too late.
|
|
--
|
|
-- ??? is business with link symbols still valid, or does it relate
|
|
-- to front end ZCX which is being phased out ???
|
|
|
|
---------------------------
|
|
-- Inlining_Not_Possible --
|
|
---------------------------
|
|
|
|
function Inlining_Not_Possible (Subp : Entity_Id) return Boolean is
|
|
Decl : constant Node_Id := Unit_Declaration_Node (Subp);
|
|
Stats : Node_Id;
|
|
|
|
begin
|
|
if Nkind (Decl) = N_Subprogram_Body then
|
|
Stats := Handled_Statement_Sequence (Decl);
|
|
return Present (Exception_Handlers (Stats))
|
|
or else Present (At_End_Proc (Stats));
|
|
|
|
elsif Nkind (Decl) = N_Subprogram_Declaration
|
|
and then Present (Corresponding_Body (Decl))
|
|
then
|
|
if Front_End_Inlining
|
|
and then Analyzed (Corresponding_Body (Decl))
|
|
then
|
|
Error_Msg_N ("pragma appears too late, ignored?", N);
|
|
return True;
|
|
|
|
-- If the subprogram is a renaming as body, the body is just a
|
|
-- call to the renamed subprogram, and inlining is trivially
|
|
-- possible.
|
|
|
|
elsif
|
|
Nkind (Unit_Declaration_Node (Corresponding_Body (Decl))) =
|
|
N_Subprogram_Renaming_Declaration
|
|
then
|
|
return False;
|
|
|
|
else
|
|
Stats :=
|
|
Handled_Statement_Sequence
|
|
(Unit_Declaration_Node (Corresponding_Body (Decl)));
|
|
|
|
return
|
|
Present (Exception_Handlers (Stats))
|
|
or else Present (At_End_Proc (Stats));
|
|
end if;
|
|
|
|
else
|
|
-- If body is not available, assume the best, the check is
|
|
-- performed again when compiling enclosing package bodies.
|
|
|
|
return False;
|
|
end if;
|
|
end Inlining_Not_Possible;
|
|
|
|
-----------------
|
|
-- Make_Inline --
|
|
-----------------
|
|
|
|
procedure Make_Inline (Subp : Entity_Id) is
|
|
Kind : constant Entity_Kind := Ekind (Subp);
|
|
Inner_Subp : Entity_Id := Subp;
|
|
|
|
begin
|
|
-- Ignore if bad type, avoid cascaded error
|
|
|
|
if Etype (Subp) = Any_Type then
|
|
Applies := True;
|
|
return;
|
|
|
|
-- Ignore if all inlining is suppressed
|
|
|
|
elsif Suppress_All_Inlining then
|
|
Applies := True;
|
|
return;
|
|
|
|
-- If inlining is not possible, for now do not treat as an error
|
|
|
|
elsif Inlining_Not_Possible (Subp) then
|
|
Applies := True;
|
|
return;
|
|
|
|
-- Here we have a candidate for inlining, but we must exclude
|
|
-- derived operations. Otherwise we would end up trying to inline
|
|
-- a phantom declaration, and the result would be to drag in a
|
|
-- body which has no direct inlining associated with it. That
|
|
-- would not only be inefficient but would also result in the
|
|
-- backend doing cross-unit inlining in cases where it was
|
|
-- definitely inappropriate to do so.
|
|
|
|
-- However, a simple Comes_From_Source test is insufficient, since
|
|
-- we do want to allow inlining of generic instances which also do
|
|
-- not come from source. We also need to recognize specs generated
|
|
-- by the front-end for bodies that carry the pragma. Finally,
|
|
-- predefined operators do not come from source but are not
|
|
-- inlineable either.
|
|
|
|
elsif Is_Generic_Instance (Subp)
|
|
or else Nkind (Parent (Parent (Subp))) = N_Subprogram_Declaration
|
|
then
|
|
null;
|
|
|
|
elsif not Comes_From_Source (Subp)
|
|
and then Scope (Subp) /= Standard_Standard
|
|
then
|
|
Applies := True;
|
|
return;
|
|
end if;
|
|
|
|
-- The referenced entity must either be the enclosing entity, or
|
|
-- an entity declared within the current open scope.
|
|
|
|
if Present (Scope (Subp))
|
|
and then Scope (Subp) /= Current_Scope
|
|
and then Subp /= Current_Scope
|
|
then
|
|
Error_Pragma_Arg
|
|
("argument of% must be entity in current scope", Assoc);
|
|
return;
|
|
end if;
|
|
|
|
-- Processing for procedure, operator or function. If subprogram
|
|
-- is aliased (as for an instance) indicate that the renamed
|
|
-- entity (if declared in the same unit) is inlined.
|
|
|
|
if Is_Subprogram (Subp) then
|
|
while Present (Alias (Inner_Subp)) loop
|
|
Inner_Subp := Alias (Inner_Subp);
|
|
end loop;
|
|
|
|
if In_Same_Source_Unit (Subp, Inner_Subp) then
|
|
Set_Inline_Flags (Inner_Subp);
|
|
|
|
Decl := Parent (Parent (Inner_Subp));
|
|
|
|
if Nkind (Decl) = N_Subprogram_Declaration
|
|
and then Present (Corresponding_Body (Decl))
|
|
then
|
|
Set_Inline_Flags (Corresponding_Body (Decl));
|
|
|
|
elsif Is_Generic_Instance (Subp) then
|
|
|
|
-- Indicate that the body needs to be created for
|
|
-- inlining subsequent calls. The instantiation node
|
|
-- follows the declaration of the wrapper package
|
|
-- created for it.
|
|
|
|
if Scope (Subp) /= Standard_Standard
|
|
and then
|
|
Need_Subprogram_Instance_Body
|
|
(Next (Unit_Declaration_Node (Scope (Alias (Subp)))),
|
|
Subp)
|
|
then
|
|
null;
|
|
end if;
|
|
end if;
|
|
end if;
|
|
|
|
Applies := True;
|
|
|
|
-- For a generic subprogram set flag as well, for use at the point
|
|
-- of instantiation, to determine whether the body should be
|
|
-- generated.
|
|
|
|
elsif Is_Generic_Subprogram (Subp) then
|
|
Set_Inline_Flags (Subp);
|
|
Applies := True;
|
|
|
|
-- Literals are by definition inlined
|
|
|
|
elsif Kind = E_Enumeration_Literal then
|
|
null;
|
|
|
|
-- Anything else is an error
|
|
|
|
else
|
|
Error_Pragma_Arg
|
|
("expect subprogram name for pragma%", Assoc);
|
|
end if;
|
|
end Make_Inline;
|
|
|
|
----------------------
|
|
-- Set_Inline_Flags --
|
|
----------------------
|
|
|
|
procedure Set_Inline_Flags (Subp : Entity_Id) is
|
|
begin
|
|
if Active then
|
|
Set_Is_Inlined (Subp, True);
|
|
end if;
|
|
|
|
if not Has_Pragma_Inline (Subp) then
|
|
Set_Has_Pragma_Inline (Subp);
|
|
Effective := True;
|
|
end if;
|
|
|
|
if Prag_Id = Pragma_Inline_Always then
|
|
Set_Has_Pragma_Inline_Always (Subp);
|
|
end if;
|
|
end Set_Inline_Flags;
|
|
|
|
-- Start of processing for Process_Inline
|
|
|
|
begin
|
|
Check_No_Identifiers;
|
|
Check_At_Least_N_Arguments (1);
|
|
|
|
if Active then
|
|
Inline_Processing_Required := True;
|
|
end if;
|
|
|
|
Assoc := Arg1;
|
|
while Present (Assoc) loop
|
|
Subp_Id := Expression (Assoc);
|
|
Analyze (Subp_Id);
|
|
Applies := False;
|
|
|
|
if Is_Entity_Name (Subp_Id) then
|
|
Subp := Entity (Subp_Id);
|
|
|
|
if Subp = Any_Id then
|
|
|
|
-- If previous error, avoid cascaded errors
|
|
|
|
Applies := True;
|
|
Effective := True;
|
|
|
|
else
|
|
Make_Inline (Subp);
|
|
|
|
while Present (Homonym (Subp))
|
|
and then Scope (Homonym (Subp)) = Current_Scope
|
|
loop
|
|
Make_Inline (Homonym (Subp));
|
|
Subp := Homonym (Subp);
|
|
end loop;
|
|
end if;
|
|
end if;
|
|
|
|
if not Applies then
|
|
Error_Pragma_Arg
|
|
("inappropriate argument for pragma%", Assoc);
|
|
|
|
elsif not Effective
|
|
and then Warn_On_Redundant_Constructs
|
|
and then not Suppress_All_Inlining
|
|
then
|
|
if Inlining_Not_Possible (Subp) then
|
|
Error_Msg_NE
|
|
("pragma Inline for& is ignored?", N, Entity (Subp_Id));
|
|
else
|
|
Error_Msg_NE
|
|
("pragma Inline for& is redundant?", N, Entity (Subp_Id));
|
|
end if;
|
|
end if;
|
|
|
|
Next (Assoc);
|
|
end loop;
|
|
end Process_Inline;
|
|
|
|
----------------------------
|
|
-- Process_Interface_Name --
|
|
----------------------------
|
|
|
|
procedure Process_Interface_Name
|
|
(Subprogram_Def : Entity_Id;
|
|
Ext_Arg : Node_Id;
|
|
Link_Arg : Node_Id)
|
|
is
|
|
Ext_Nam : Node_Id;
|
|
Link_Nam : Node_Id;
|
|
String_Val : String_Id;
|
|
|
|
procedure Check_Form_Of_Interface_Name
|
|
(SN : Node_Id;
|
|
Ext_Name_Case : Boolean);
|
|
-- SN is a string literal node for an interface name. This routine
|
|
-- performs some minimal checks that the name is reasonable. In
|
|
-- particular that no spaces or other obviously incorrect characters
|
|
-- appear. This is only a warning, since any characters are allowed.
|
|
-- Ext_Name_Case is True for an External_Name, False for a Link_Name.
|
|
|
|
----------------------------------
|
|
-- Check_Form_Of_Interface_Name --
|
|
----------------------------------
|
|
|
|
procedure Check_Form_Of_Interface_Name
|
|
(SN : Node_Id;
|
|
Ext_Name_Case : Boolean)
|
|
is
|
|
S : constant String_Id := Strval (Expr_Value_S (SN));
|
|
SL : constant Nat := String_Length (S);
|
|
C : Char_Code;
|
|
|
|
begin
|
|
if SL = 0 then
|
|
Error_Msg_N ("interface name cannot be null string", SN);
|
|
end if;
|
|
|
|
for J in 1 .. SL loop
|
|
C := Get_String_Char (S, J);
|
|
|
|
-- Look for dubious character and issue unconditional warning.
|
|
-- Definitely dubious if not in character range.
|
|
|
|
if not In_Character_Range (C)
|
|
|
|
-- For all cases except CLI target,
|
|
-- commas, spaces and slashes are dubious (in CLI, we use
|
|
-- commas and backslashes in external names to specify
|
|
-- assembly version and public key, while slashes and spaces
|
|
-- can be used in names to mark nested classes and
|
|
-- valuetypes).
|
|
|
|
or else ((not Ext_Name_Case or else VM_Target /= CLI_Target)
|
|
and then (Get_Character (C) = ','
|
|
or else
|
|
Get_Character (C) = '\'))
|
|
or else (VM_Target /= CLI_Target
|
|
and then (Get_Character (C) = ' '
|
|
or else
|
|
Get_Character (C) = '/'))
|
|
then
|
|
Error_Msg
|
|
("?interface name contains illegal character",
|
|
Sloc (SN) + Source_Ptr (J));
|
|
end if;
|
|
end loop;
|
|
end Check_Form_Of_Interface_Name;
|
|
|
|
-- Start of processing for Process_Interface_Name
|
|
|
|
begin
|
|
if No (Link_Arg) then
|
|
if No (Ext_Arg) then
|
|
if VM_Target = CLI_Target
|
|
and then Ekind (Subprogram_Def) = E_Package
|
|
and then Nkind (Parent (Subprogram_Def)) =
|
|
N_Package_Specification
|
|
and then Present (Generic_Parent (Parent (Subprogram_Def)))
|
|
then
|
|
Set_Interface_Name
|
|
(Subprogram_Def,
|
|
Interface_Name
|
|
(Generic_Parent (Parent (Subprogram_Def))));
|
|
end if;
|
|
|
|
return;
|
|
|
|
elsif Chars (Ext_Arg) = Name_Link_Name then
|
|
Ext_Nam := Empty;
|
|
Link_Nam := Expression (Ext_Arg);
|
|
|
|
else
|
|
Check_Optional_Identifier (Ext_Arg, Name_External_Name);
|
|
Ext_Nam := Expression (Ext_Arg);
|
|
Link_Nam := Empty;
|
|
end if;
|
|
|
|
else
|
|
Check_Optional_Identifier (Ext_Arg, Name_External_Name);
|
|
Check_Optional_Identifier (Link_Arg, Name_Link_Name);
|
|
Ext_Nam := Expression (Ext_Arg);
|
|
Link_Nam := Expression (Link_Arg);
|
|
end if;
|
|
|
|
-- Check expressions for external name and link name are static
|
|
|
|
if Present (Ext_Nam) then
|
|
Check_Arg_Is_Static_Expression (Ext_Nam, Standard_String);
|
|
Check_Form_Of_Interface_Name (Ext_Nam, Ext_Name_Case => True);
|
|
|
|
-- Verify that external name is not the name of a local entity,
|
|
-- which would hide the imported one and could lead to run-time
|
|
-- surprises. The problem can only arise for entities declared in
|
|
-- a package body (otherwise the external name is fully qualified
|
|
-- and will not conflict).
|
|
|
|
declare
|
|
Nam : Name_Id;
|
|
E : Entity_Id;
|
|
Par : Node_Id;
|
|
|
|
begin
|
|
if Prag_Id = Pragma_Import then
|
|
String_To_Name_Buffer (Strval (Expr_Value_S (Ext_Nam)));
|
|
Nam := Name_Find;
|
|
E := Entity_Id (Get_Name_Table_Info (Nam));
|
|
|
|
if Nam /= Chars (Subprogram_Def)
|
|
and then Present (E)
|
|
and then not Is_Overloadable (E)
|
|
and then Is_Immediately_Visible (E)
|
|
and then not Is_Imported (E)
|
|
and then Ekind (Scope (E)) = E_Package
|
|
then
|
|
Par := Parent (E);
|
|
while Present (Par) loop
|
|
if Nkind (Par) = N_Package_Body then
|
|
Error_Msg_Sloc := Sloc (E);
|
|
Error_Msg_NE
|
|
("imported entity is hidden by & declared#",
|
|
Ext_Arg, E);
|
|
exit;
|
|
end if;
|
|
|
|
Par := Parent (Par);
|
|
end loop;
|
|
end if;
|
|
end if;
|
|
end;
|
|
end if;
|
|
|
|
if Present (Link_Nam) then
|
|
Check_Arg_Is_Static_Expression (Link_Nam, Standard_String);
|
|
Check_Form_Of_Interface_Name (Link_Nam, Ext_Name_Case => False);
|
|
end if;
|
|
|
|
-- If there is no link name, just set the external name
|
|
|
|
if No (Link_Nam) then
|
|
Link_Nam := Adjust_External_Name_Case (Expr_Value_S (Ext_Nam));
|
|
|
|
-- For the Link_Name case, the given literal is preceded by an
|
|
-- asterisk, which indicates to GCC that the given name should be
|
|
-- taken literally, and in particular that no prepending of
|
|
-- underlines should occur, even in systems where this is the
|
|
-- normal default.
|
|
|
|
else
|
|
Start_String;
|
|
|
|
if VM_Target = No_VM then
|
|
Store_String_Char (Get_Char_Code ('*'));
|
|
end if;
|
|
|
|
String_Val := Strval (Expr_Value_S (Link_Nam));
|
|
Store_String_Chars (String_Val);
|
|
Link_Nam :=
|
|
Make_String_Literal (Sloc (Link_Nam),
|
|
Strval => End_String);
|
|
end if;
|
|
|
|
Set_Encoded_Interface_Name
|
|
(Get_Base_Subprogram (Subprogram_Def), Link_Nam);
|
|
Check_Duplicated_Export_Name (Link_Nam);
|
|
end Process_Interface_Name;
|
|
|
|
-----------------------------------------
|
|
-- Process_Interrupt_Or_Attach_Handler --
|
|
-----------------------------------------
|
|
|
|
procedure Process_Interrupt_Or_Attach_Handler is
|
|
Arg1_X : constant Node_Id := Expression (Arg1);
|
|
Handler_Proc : constant Entity_Id := Entity (Arg1_X);
|
|
Proc_Scope : constant Entity_Id := Scope (Handler_Proc);
|
|
|
|
begin
|
|
Set_Is_Interrupt_Handler (Handler_Proc);
|
|
|
|
-- If the pragma is not associated with a handler procedure within a
|
|
-- protected type, then it must be for a nonprotected procedure for
|
|
-- the AAMP target, in which case we don't associate a representation
|
|
-- item with the procedure's scope.
|
|
|
|
if Ekind (Proc_Scope) = E_Protected_Type then
|
|
if Prag_Id = Pragma_Interrupt_Handler
|
|
or else
|
|
Prag_Id = Pragma_Attach_Handler
|
|
then
|
|
Record_Rep_Item (Proc_Scope, N);
|
|
end if;
|
|
end if;
|
|
end Process_Interrupt_Or_Attach_Handler;
|
|
|
|
--------------------------------------------------
|
|
-- Process_Restrictions_Or_Restriction_Warnings --
|
|
--------------------------------------------------
|
|
|
|
-- Note: some of the simple identifier cases were handled in par-prag,
|
|
-- but it is harmless (and more straightforward) to simply handle all
|
|
-- cases here, even if it means we repeat a bit of work in some cases.
|
|
|
|
procedure Process_Restrictions_Or_Restriction_Warnings
|
|
(Warn : Boolean)
|
|
is
|
|
Arg : Node_Id;
|
|
R_Id : Restriction_Id;
|
|
Id : Name_Id;
|
|
Expr : Node_Id;
|
|
Val : Uint;
|
|
|
|
procedure Check_Unit_Name (N : Node_Id);
|
|
-- Checks unit name parameter for No_Dependence. Returns if it has
|
|
-- an appropriate form, otherwise raises pragma argument error.
|
|
|
|
---------------------
|
|
-- Check_Unit_Name --
|
|
---------------------
|
|
|
|
procedure Check_Unit_Name (N : Node_Id) is
|
|
begin
|
|
if Nkind (N) = N_Selected_Component then
|
|
Check_Unit_Name (Prefix (N));
|
|
Check_Unit_Name (Selector_Name (N));
|
|
|
|
elsif Nkind (N) = N_Identifier then
|
|
return;
|
|
|
|
else
|
|
Error_Pragma_Arg
|
|
("wrong form for unit name for No_Dependence", N);
|
|
end if;
|
|
end Check_Unit_Name;
|
|
|
|
-- Start of processing for Process_Restrictions_Or_Restriction_Warnings
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_At_Least_N_Arguments (1);
|
|
Check_Valid_Configuration_Pragma;
|
|
|
|
Arg := Arg1;
|
|
while Present (Arg) loop
|
|
Id := Chars (Arg);
|
|
Expr := Expression (Arg);
|
|
|
|
-- Case of no restriction identifier present
|
|
|
|
if Id = No_Name then
|
|
if Nkind (Expr) /= N_Identifier then
|
|
Error_Pragma_Arg
|
|
("invalid form for restriction", Arg);
|
|
end if;
|
|
|
|
R_Id :=
|
|
Get_Restriction_Id
|
|
(Process_Restriction_Synonyms (Expr));
|
|
|
|
if R_Id not in All_Boolean_Restrictions then
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N
|
|
("invalid restriction identifier&", Get_Pragma_Arg (Arg));
|
|
|
|
-- Check for possible misspelling
|
|
|
|
for J in Restriction_Id loop
|
|
declare
|
|
Rnm : constant String := Restriction_Id'Image (J);
|
|
|
|
begin
|
|
Name_Buffer (1 .. Rnm'Length) := Rnm;
|
|
Name_Len := Rnm'Length;
|
|
Set_Casing (All_Lower_Case);
|
|
|
|
if Is_Bad_Spelling_Of (Chars (Expr), Name_Enter) then
|
|
Set_Casing
|
|
(Identifier_Casing (Current_Source_File));
|
|
Error_Msg_String (1 .. Rnm'Length) :=
|
|
Name_Buffer (1 .. Name_Len);
|
|
Error_Msg_Strlen := Rnm'Length;
|
|
Error_Msg_N -- CODEFIX
|
|
("\possible misspelling of ""~""",
|
|
Get_Pragma_Arg (Arg));
|
|
exit;
|
|
end if;
|
|
end;
|
|
end loop;
|
|
|
|
raise Pragma_Exit;
|
|
end if;
|
|
|
|
if Implementation_Restriction (R_Id) then
|
|
Check_Restriction (No_Implementation_Restrictions, Arg);
|
|
end if;
|
|
|
|
-- If this is a warning, then set the warning unless we already
|
|
-- have a real restriction active (we never want a warning to
|
|
-- override a real restriction).
|
|
|
|
if Warn then
|
|
if not Restriction_Active (R_Id) then
|
|
Set_Restriction (R_Id, N);
|
|
Restriction_Warnings (R_Id) := True;
|
|
end if;
|
|
|
|
-- If real restriction case, then set it and make sure that the
|
|
-- restriction warning flag is off, since a real restriction
|
|
-- always overrides a warning.
|
|
|
|
else
|
|
Set_Restriction (R_Id, N);
|
|
Restriction_Warnings (R_Id) := False;
|
|
end if;
|
|
|
|
-- A very special case that must be processed here: pragma
|
|
-- Restrictions (No_Exceptions) turns off all run-time
|
|
-- checking. This is a bit dubious in terms of the formal
|
|
-- language definition, but it is what is intended by RM
|
|
-- H.4(12). Restriction_Warnings never affects generated code
|
|
-- so this is done only in the real restriction case.
|
|
|
|
if R_Id = No_Exceptions and then not Warn then
|
|
Scope_Suppress := (others => True);
|
|
end if;
|
|
|
|
-- Case of No_Dependence => unit-name. Note that the parser
|
|
-- already made the necessary entry in the No_Dependence table.
|
|
|
|
elsif Id = Name_No_Dependence then
|
|
Check_Unit_Name (Expr);
|
|
|
|
-- All other cases of restriction identifier present
|
|
|
|
else
|
|
R_Id := Get_Restriction_Id (Process_Restriction_Synonyms (Arg));
|
|
Analyze_And_Resolve (Expr, Any_Integer);
|
|
|
|
if R_Id not in All_Parameter_Restrictions then
|
|
Error_Pragma_Arg
|
|
("invalid restriction parameter identifier", Arg);
|
|
|
|
elsif not Is_OK_Static_Expression (Expr) then
|
|
Flag_Non_Static_Expr
|
|
("value must be static expression!", Expr);
|
|
raise Pragma_Exit;
|
|
|
|
elsif not Is_Integer_Type (Etype (Expr))
|
|
or else Expr_Value (Expr) < 0
|
|
then
|
|
Error_Pragma_Arg
|
|
("value must be non-negative integer", Arg);
|
|
end if;
|
|
|
|
-- Restriction pragma is active
|
|
|
|
Val := Expr_Value (Expr);
|
|
|
|
if not UI_Is_In_Int_Range (Val) then
|
|
Error_Pragma_Arg
|
|
("pragma ignored, value too large?", Arg);
|
|
end if;
|
|
|
|
-- Warning case. If the real restriction is active, then we
|
|
-- ignore the request, since warning never overrides a real
|
|
-- restriction. Otherwise we set the proper warning. Note that
|
|
-- this circuit sets the warning again if it is already set,
|
|
-- which is what we want, since the constant may have changed.
|
|
|
|
if Warn then
|
|
if not Restriction_Active (R_Id) then
|
|
Set_Restriction
|
|
(R_Id, N, Integer (UI_To_Int (Val)));
|
|
Restriction_Warnings (R_Id) := True;
|
|
end if;
|
|
|
|
-- Real restriction case, set restriction and make sure warning
|
|
-- flag is off since real restriction always overrides warning.
|
|
|
|
else
|
|
Set_Restriction (R_Id, N, Integer (UI_To_Int (Val)));
|
|
Restriction_Warnings (R_Id) := False;
|
|
end if;
|
|
end if;
|
|
|
|
Next (Arg);
|
|
end loop;
|
|
end Process_Restrictions_Or_Restriction_Warnings;
|
|
|
|
---------------------------------
|
|
-- Process_Suppress_Unsuppress --
|
|
---------------------------------
|
|
|
|
-- Note: this procedure makes entries in the check suppress data
|
|
-- structures managed by Sem. See spec of package Sem for full
|
|
-- details on how we handle recording of check suppression.
|
|
|
|
procedure Process_Suppress_Unsuppress (Suppress_Case : Boolean) is
|
|
C : Check_Id;
|
|
E_Id : Node_Id;
|
|
E : Entity_Id;
|
|
|
|
In_Package_Spec : constant Boolean :=
|
|
Is_Package_Or_Generic_Package (Current_Scope)
|
|
and then not In_Package_Body (Current_Scope);
|
|
|
|
procedure Suppress_Unsuppress_Echeck (E : Entity_Id; C : Check_Id);
|
|
-- Used to suppress a single check on the given entity
|
|
|
|
--------------------------------
|
|
-- Suppress_Unsuppress_Echeck --
|
|
--------------------------------
|
|
|
|
procedure Suppress_Unsuppress_Echeck (E : Entity_Id; C : Check_Id) is
|
|
begin
|
|
Set_Checks_May_Be_Suppressed (E);
|
|
|
|
if In_Package_Spec then
|
|
Push_Global_Suppress_Stack_Entry
|
|
(Entity => E,
|
|
Check => C,
|
|
Suppress => Suppress_Case);
|
|
|
|
else
|
|
Push_Local_Suppress_Stack_Entry
|
|
(Entity => E,
|
|
Check => C,
|
|
Suppress => Suppress_Case);
|
|
end if;
|
|
|
|
-- If this is a first subtype, and the base type is distinct,
|
|
-- then also set the suppress flags on the base type.
|
|
|
|
if Is_First_Subtype (E)
|
|
and then Etype (E) /= E
|
|
then
|
|
Suppress_Unsuppress_Echeck (Etype (E), C);
|
|
end if;
|
|
end Suppress_Unsuppress_Echeck;
|
|
|
|
-- Start of processing for Process_Suppress_Unsuppress
|
|
|
|
begin
|
|
-- Suppress/Unsuppress can appear as a configuration pragma, or in a
|
|
-- declarative part or a package spec (RM 11.5(5)).
|
|
|
|
if not Is_Configuration_Pragma then
|
|
Check_Is_In_Decl_Part_Or_Package_Spec;
|
|
end if;
|
|
|
|
Check_At_Least_N_Arguments (1);
|
|
Check_At_Most_N_Arguments (2);
|
|
Check_No_Identifier (Arg1);
|
|
Check_Arg_Is_Identifier (Arg1);
|
|
|
|
C := Get_Check_Id (Chars (Expression (Arg1)));
|
|
|
|
if C = No_Check_Id then
|
|
Error_Pragma_Arg
|
|
("argument of pragma% is not valid check name", Arg1);
|
|
end if;
|
|
|
|
if not Suppress_Case
|
|
and then (C = All_Checks or else C = Overflow_Check)
|
|
then
|
|
Opt.Overflow_Checks_Unsuppressed := True;
|
|
end if;
|
|
|
|
if Arg_Count = 1 then
|
|
|
|
-- Make an entry in the local scope suppress table. This is the
|
|
-- table that directly shows the current value of the scope
|
|
-- suppress check for any check id value.
|
|
|
|
if C = All_Checks then
|
|
|
|
-- For All_Checks, we set all specific predefined checks with
|
|
-- the exception of Elaboration_Check, which is handled
|
|
-- specially because of not wanting All_Checks to have the
|
|
-- effect of deactivating static elaboration order processing.
|
|
|
|
for J in Scope_Suppress'Range loop
|
|
if J /= Elaboration_Check then
|
|
Scope_Suppress (J) := Suppress_Case;
|
|
end if;
|
|
end loop;
|
|
|
|
-- If not All_Checks, and predefined check, then set appropriate
|
|
-- scope entry. Note that we will set Elaboration_Check if this
|
|
-- is explicitly specified.
|
|
|
|
elsif C in Predefined_Check_Id then
|
|
Scope_Suppress (C) := Suppress_Case;
|
|
end if;
|
|
|
|
-- Also make an entry in the Local_Entity_Suppress table
|
|
|
|
Push_Local_Suppress_Stack_Entry
|
|
(Entity => Empty,
|
|
Check => C,
|
|
Suppress => Suppress_Case);
|
|
|
|
-- Case of two arguments present, where the check is suppressed for
|
|
-- a specified entity (given as the second argument of the pragma)
|
|
|
|
else
|
|
Check_Optional_Identifier (Arg2, Name_On);
|
|
E_Id := Expression (Arg2);
|
|
Analyze (E_Id);
|
|
|
|
if not Is_Entity_Name (E_Id) then
|
|
Error_Pragma_Arg
|
|
("second argument of pragma% must be entity name", Arg2);
|
|
end if;
|
|
|
|
E := Entity (E_Id);
|
|
|
|
if E = Any_Id then
|
|
return;
|
|
end if;
|
|
|
|
-- Enforce RM 11.5(7) which requires that for a pragma that
|
|
-- appears within a package spec, the named entity must be
|
|
-- within the package spec. We allow the package name itself
|
|
-- to be mentioned since that makes sense, although it is not
|
|
-- strictly allowed by 11.5(7).
|
|
|
|
if In_Package_Spec
|
|
and then E /= Current_Scope
|
|
and then Scope (E) /= Current_Scope
|
|
then
|
|
Error_Pragma_Arg
|
|
("entity in pragma% is not in package spec (RM 11.5(7))",
|
|
Arg2);
|
|
end if;
|
|
|
|
-- Loop through homonyms. As noted below, in the case of a package
|
|
-- spec, only homonyms within the package spec are considered.
|
|
|
|
loop
|
|
Suppress_Unsuppress_Echeck (E, C);
|
|
|
|
if Is_Generic_Instance (E)
|
|
and then Is_Subprogram (E)
|
|
and then Present (Alias (E))
|
|
then
|
|
Suppress_Unsuppress_Echeck (Alias (E), C);
|
|
end if;
|
|
|
|
-- Move to next homonym
|
|
|
|
E := Homonym (E);
|
|
exit when No (E);
|
|
|
|
-- If we are within a package specification, the pragma only
|
|
-- applies to homonyms in the same scope.
|
|
|
|
exit when In_Package_Spec
|
|
and then Scope (E) /= Current_Scope;
|
|
end loop;
|
|
end if;
|
|
end Process_Suppress_Unsuppress;
|
|
|
|
------------------
|
|
-- Set_Exported --
|
|
------------------
|
|
|
|
procedure Set_Exported (E : Entity_Id; Arg : Node_Id) is
|
|
begin
|
|
if Is_Imported (E) then
|
|
Error_Pragma_Arg
|
|
("cannot export entity& that was previously imported", Arg);
|
|
|
|
elsif Present (Address_Clause (E)) then
|
|
Error_Pragma_Arg
|
|
("cannot export entity& that has an address clause", Arg);
|
|
end if;
|
|
|
|
Set_Is_Exported (E);
|
|
|
|
-- Generate a reference for entity explicitly, because the
|
|
-- identifier may be overloaded and name resolution will not
|
|
-- generate one.
|
|
|
|
Generate_Reference (E, Arg);
|
|
|
|
-- Deal with exporting non-library level entity
|
|
|
|
if not Is_Library_Level_Entity (E) then
|
|
|
|
-- Not allowed at all for subprograms
|
|
|
|
if Is_Subprogram (E) then
|
|
Error_Pragma_Arg ("local subprogram& cannot be exported", Arg);
|
|
|
|
-- Otherwise set public and statically allocated
|
|
|
|
else
|
|
Set_Is_Public (E);
|
|
Set_Is_Statically_Allocated (E);
|
|
|
|
-- Warn if the corresponding W flag is set and the pragma comes
|
|
-- from source. The latter may not be true e.g. on VMS where we
|
|
-- expand export pragmas for exception codes associated with
|
|
-- imported or exported exceptions. We do not want to generate
|
|
-- a warning for something that the user did not write.
|
|
|
|
if Warn_On_Export_Import
|
|
and then Comes_From_Source (Arg)
|
|
then
|
|
Error_Msg_NE
|
|
("?& has been made static as a result of Export", Arg, E);
|
|
Error_Msg_N
|
|
("\this usage is non-standard and non-portable", Arg);
|
|
end if;
|
|
end if;
|
|
end if;
|
|
|
|
if Warn_On_Export_Import and then Is_Type (E) then
|
|
Error_Msg_NE
|
|
("exporting a type has no effect?", Arg, E);
|
|
end if;
|
|
|
|
if Warn_On_Export_Import and Inside_A_Generic then
|
|
Error_Msg_NE
|
|
("all instances of& will have the same external name?", Arg, E);
|
|
end if;
|
|
end Set_Exported;
|
|
|
|
----------------------------------------------
|
|
-- Set_Extended_Import_Export_External_Name --
|
|
----------------------------------------------
|
|
|
|
procedure Set_Extended_Import_Export_External_Name
|
|
(Internal_Ent : Entity_Id;
|
|
Arg_External : Node_Id)
|
|
is
|
|
Old_Name : constant Node_Id := Interface_Name (Internal_Ent);
|
|
New_Name : Node_Id;
|
|
|
|
begin
|
|
if No (Arg_External) then
|
|
return;
|
|
end if;
|
|
|
|
Check_Arg_Is_External_Name (Arg_External);
|
|
|
|
if Nkind (Arg_External) = N_String_Literal then
|
|
if String_Length (Strval (Arg_External)) = 0 then
|
|
return;
|
|
else
|
|
New_Name := Adjust_External_Name_Case (Arg_External);
|
|
end if;
|
|
|
|
elsif Nkind (Arg_External) = N_Identifier then
|
|
New_Name := Get_Default_External_Name (Arg_External);
|
|
|
|
-- Check_Arg_Is_External_Name should let through only identifiers and
|
|
-- string literals or static string expressions (which are folded to
|
|
-- string literals).
|
|
|
|
else
|
|
raise Program_Error;
|
|
end if;
|
|
|
|
-- If we already have an external name set (by a prior normal Import
|
|
-- or Export pragma), then the external names must match
|
|
|
|
if Present (Interface_Name (Internal_Ent)) then
|
|
Check_Matching_Internal_Names : declare
|
|
S1 : constant String_Id := Strval (Old_Name);
|
|
S2 : constant String_Id := Strval (New_Name);
|
|
|
|
procedure Mismatch;
|
|
-- Called if names do not match
|
|
|
|
--------------
|
|
-- Mismatch --
|
|
--------------
|
|
|
|
procedure Mismatch is
|
|
begin
|
|
Error_Msg_Sloc := Sloc (Old_Name);
|
|
Error_Pragma_Arg
|
|
("external name does not match that given #",
|
|
Arg_External);
|
|
end Mismatch;
|
|
|
|
-- Start of processing for Check_Matching_Internal_Names
|
|
|
|
begin
|
|
if String_Length (S1) /= String_Length (S2) then
|
|
Mismatch;
|
|
|
|
else
|
|
for J in 1 .. String_Length (S1) loop
|
|
if Get_String_Char (S1, J) /= Get_String_Char (S2, J) then
|
|
Mismatch;
|
|
end if;
|
|
end loop;
|
|
end if;
|
|
end Check_Matching_Internal_Names;
|
|
|
|
-- Otherwise set the given name
|
|
|
|
else
|
|
Set_Encoded_Interface_Name (Internal_Ent, New_Name);
|
|
Check_Duplicated_Export_Name (New_Name);
|
|
end if;
|
|
end Set_Extended_Import_Export_External_Name;
|
|
|
|
------------------
|
|
-- Set_Imported --
|
|
------------------
|
|
|
|
procedure Set_Imported (E : Entity_Id) is
|
|
begin
|
|
-- Error message if already imported or exported
|
|
|
|
if Is_Exported (E) or else Is_Imported (E) then
|
|
if Is_Exported (E) then
|
|
Error_Msg_NE ("entity& was previously exported", N, E);
|
|
else
|
|
Error_Msg_NE ("entity& was previously imported", N, E);
|
|
end if;
|
|
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N
|
|
("\(pragma% applies to all previous entities)", N);
|
|
|
|
Error_Msg_Sloc := Sloc (E);
|
|
Error_Msg_NE ("\import not allowed for& declared#", N, E);
|
|
|
|
-- Here if not previously imported or exported, OK to import
|
|
|
|
else
|
|
Set_Is_Imported (E);
|
|
|
|
-- If the entity is an object that is not at the library level,
|
|
-- then it is statically allocated. We do not worry about objects
|
|
-- with address clauses in this context since they are not really
|
|
-- imported in the linker sense.
|
|
|
|
if Is_Object (E)
|
|
and then not Is_Library_Level_Entity (E)
|
|
and then No (Address_Clause (E))
|
|
then
|
|
Set_Is_Statically_Allocated (E);
|
|
end if;
|
|
end if;
|
|
end Set_Imported;
|
|
|
|
-------------------------
|
|
-- Set_Mechanism_Value --
|
|
-------------------------
|
|
|
|
-- Note: the mechanism name has not been analyzed (and cannot indeed be
|
|
-- analyzed, since it is semantic nonsense), so we get it in the exact
|
|
-- form created by the parser.
|
|
|
|
procedure Set_Mechanism_Value (Ent : Entity_Id; Mech_Name : Node_Id) is
|
|
Class : Node_Id;
|
|
Param : Node_Id;
|
|
Mech_Name_Id : Name_Id;
|
|
|
|
procedure Bad_Class;
|
|
-- Signal bad descriptor class name
|
|
|
|
procedure Bad_Mechanism;
|
|
-- Signal bad mechanism name
|
|
|
|
---------------
|
|
-- Bad_Class --
|
|
---------------
|
|
|
|
procedure Bad_Class is
|
|
begin
|
|
Error_Pragma_Arg ("unrecognized descriptor class name", Class);
|
|
end Bad_Class;
|
|
|
|
-------------------------
|
|
-- Bad_Mechanism_Value --
|
|
-------------------------
|
|
|
|
procedure Bad_Mechanism is
|
|
begin
|
|
Error_Pragma_Arg ("unrecognized mechanism name", Mech_Name);
|
|
end Bad_Mechanism;
|
|
|
|
-- Start of processing for Set_Mechanism_Value
|
|
|
|
begin
|
|
if Mechanism (Ent) /= Default_Mechanism then
|
|
Error_Msg_NE
|
|
("mechanism for & has already been set", Mech_Name, Ent);
|
|
end if;
|
|
|
|
-- MECHANISM_NAME ::= value | reference | descriptor |
|
|
-- short_descriptor
|
|
|
|
if Nkind (Mech_Name) = N_Identifier then
|
|
if Chars (Mech_Name) = Name_Value then
|
|
Set_Mechanism (Ent, By_Copy);
|
|
return;
|
|
|
|
elsif Chars (Mech_Name) = Name_Reference then
|
|
Set_Mechanism (Ent, By_Reference);
|
|
return;
|
|
|
|
elsif Chars (Mech_Name) = Name_Descriptor then
|
|
Check_VMS (Mech_Name);
|
|
Set_Mechanism (Ent, By_Descriptor);
|
|
return;
|
|
|
|
elsif Chars (Mech_Name) = Name_Short_Descriptor then
|
|
Check_VMS (Mech_Name);
|
|
Set_Mechanism (Ent, By_Short_Descriptor);
|
|
return;
|
|
|
|
elsif Chars (Mech_Name) = Name_Copy then
|
|
Error_Pragma_Arg
|
|
("bad mechanism name, Value assumed", Mech_Name);
|
|
|
|
else
|
|
Bad_Mechanism;
|
|
end if;
|
|
|
|
-- MECHANISM_NAME ::= descriptor (CLASS_NAME) |
|
|
-- short_descriptor (CLASS_NAME)
|
|
-- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
|
|
|
|
-- Note: this form is parsed as an indexed component
|
|
|
|
elsif Nkind (Mech_Name) = N_Indexed_Component then
|
|
|
|
Class := First (Expressions (Mech_Name));
|
|
|
|
if Nkind (Prefix (Mech_Name)) /= N_Identifier
|
|
or else not (Chars (Prefix (Mech_Name)) = Name_Descriptor or else
|
|
Chars (Prefix (Mech_Name)) = Name_Short_Descriptor)
|
|
or else Present (Next (Class))
|
|
then
|
|
Bad_Mechanism;
|
|
else
|
|
Mech_Name_Id := Chars (Prefix (Mech_Name));
|
|
end if;
|
|
|
|
-- MECHANISM_NAME ::= descriptor (Class => CLASS_NAME) |
|
|
-- short_descriptor (Class => CLASS_NAME)
|
|
-- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
|
|
|
|
-- Note: this form is parsed as a function call
|
|
|
|
elsif Nkind (Mech_Name) = N_Function_Call then
|
|
|
|
Param := First (Parameter_Associations (Mech_Name));
|
|
|
|
if Nkind (Name (Mech_Name)) /= N_Identifier
|
|
or else not (Chars (Name (Mech_Name)) = Name_Descriptor or else
|
|
Chars (Name (Mech_Name)) = Name_Short_Descriptor)
|
|
or else Present (Next (Param))
|
|
or else No (Selector_Name (Param))
|
|
or else Chars (Selector_Name (Param)) /= Name_Class
|
|
then
|
|
Bad_Mechanism;
|
|
else
|
|
Class := Explicit_Actual_Parameter (Param);
|
|
Mech_Name_Id := Chars (Name (Mech_Name));
|
|
end if;
|
|
|
|
else
|
|
Bad_Mechanism;
|
|
end if;
|
|
|
|
-- Fall through here with Class set to descriptor class name
|
|
|
|
Check_VMS (Mech_Name);
|
|
|
|
if Nkind (Class) /= N_Identifier then
|
|
Bad_Class;
|
|
|
|
elsif Mech_Name_Id = Name_Descriptor
|
|
and then Chars (Class) = Name_UBS
|
|
then
|
|
Set_Mechanism (Ent, By_Descriptor_UBS);
|
|
|
|
elsif Mech_Name_Id = Name_Descriptor
|
|
and then Chars (Class) = Name_UBSB
|
|
then
|
|
Set_Mechanism (Ent, By_Descriptor_UBSB);
|
|
|
|
elsif Mech_Name_Id = Name_Descriptor
|
|
and then Chars (Class) = Name_UBA
|
|
then
|
|
Set_Mechanism (Ent, By_Descriptor_UBA);
|
|
|
|
elsif Mech_Name_Id = Name_Descriptor
|
|
and then Chars (Class) = Name_S
|
|
then
|
|
Set_Mechanism (Ent, By_Descriptor_S);
|
|
|
|
elsif Mech_Name_Id = Name_Descriptor
|
|
and then Chars (Class) = Name_SB
|
|
then
|
|
Set_Mechanism (Ent, By_Descriptor_SB);
|
|
|
|
elsif Mech_Name_Id = Name_Descriptor
|
|
and then Chars (Class) = Name_A
|
|
then
|
|
Set_Mechanism (Ent, By_Descriptor_A);
|
|
|
|
elsif Mech_Name_Id = Name_Descriptor
|
|
and then Chars (Class) = Name_NCA
|
|
then
|
|
Set_Mechanism (Ent, By_Descriptor_NCA);
|
|
|
|
elsif Mech_Name_Id = Name_Short_Descriptor
|
|
and then Chars (Class) = Name_UBS
|
|
then
|
|
Set_Mechanism (Ent, By_Short_Descriptor_UBS);
|
|
|
|
elsif Mech_Name_Id = Name_Short_Descriptor
|
|
and then Chars (Class) = Name_UBSB
|
|
then
|
|
Set_Mechanism (Ent, By_Short_Descriptor_UBSB);
|
|
|
|
elsif Mech_Name_Id = Name_Short_Descriptor
|
|
and then Chars (Class) = Name_UBA
|
|
then
|
|
Set_Mechanism (Ent, By_Short_Descriptor_UBA);
|
|
|
|
elsif Mech_Name_Id = Name_Short_Descriptor
|
|
and then Chars (Class) = Name_S
|
|
then
|
|
Set_Mechanism (Ent, By_Short_Descriptor_S);
|
|
|
|
elsif Mech_Name_Id = Name_Short_Descriptor
|
|
and then Chars (Class) = Name_SB
|
|
then
|
|
Set_Mechanism (Ent, By_Short_Descriptor_SB);
|
|
|
|
elsif Mech_Name_Id = Name_Short_Descriptor
|
|
and then Chars (Class) = Name_A
|
|
then
|
|
Set_Mechanism (Ent, By_Short_Descriptor_A);
|
|
|
|
elsif Mech_Name_Id = Name_Short_Descriptor
|
|
and then Chars (Class) = Name_NCA
|
|
then
|
|
Set_Mechanism (Ent, By_Short_Descriptor_NCA);
|
|
|
|
else
|
|
Bad_Class;
|
|
end if;
|
|
end Set_Mechanism_Value;
|
|
|
|
---------------------------
|
|
-- Set_Ravenscar_Profile --
|
|
---------------------------
|
|
|
|
-- The tasks to be done here are
|
|
|
|
-- Set required policies
|
|
|
|
-- pragma Task_Dispatching_Policy (FIFO_Within_Priorities)
|
|
-- pragma Locking_Policy (Ceiling_Locking)
|
|
|
|
-- Set Detect_Blocking mode
|
|
|
|
-- Set required restrictions (see System.Rident for detailed list)
|
|
|
|
procedure Set_Ravenscar_Profile (N : Node_Id) is
|
|
begin
|
|
-- pragma Task_Dispatching_Policy (FIFO_Within_Priorities)
|
|
|
|
if Task_Dispatching_Policy /= ' '
|
|
and then Task_Dispatching_Policy /= 'F'
|
|
then
|
|
Error_Msg_Sloc := Task_Dispatching_Policy_Sloc;
|
|
Error_Pragma ("Profile (Ravenscar) incompatible with policy#");
|
|
|
|
-- Set the FIFO_Within_Priorities policy, but always preserve
|
|
-- System_Location since we like the error message with the run time
|
|
-- name.
|
|
|
|
else
|
|
Task_Dispatching_Policy := 'F';
|
|
|
|
if Task_Dispatching_Policy_Sloc /= System_Location then
|
|
Task_Dispatching_Policy_Sloc := Loc;
|
|
end if;
|
|
end if;
|
|
|
|
-- pragma Locking_Policy (Ceiling_Locking)
|
|
|
|
if Locking_Policy /= ' '
|
|
and then Locking_Policy /= 'C'
|
|
then
|
|
Error_Msg_Sloc := Locking_Policy_Sloc;
|
|
Error_Pragma ("Profile (Ravenscar) incompatible with policy#");
|
|
|
|
-- Set the Ceiling_Locking policy, but preserve System_Location since
|
|
-- we like the error message with the run time name.
|
|
|
|
else
|
|
Locking_Policy := 'C';
|
|
|
|
if Locking_Policy_Sloc /= System_Location then
|
|
Locking_Policy_Sloc := Loc;
|
|
end if;
|
|
end if;
|
|
|
|
-- pragma Detect_Blocking
|
|
|
|
Detect_Blocking := True;
|
|
|
|
-- Set the corresponding restrictions
|
|
|
|
Set_Profile_Restrictions
|
|
(Ravenscar, N, Warn => Treat_Restrictions_As_Warnings);
|
|
end Set_Ravenscar_Profile;
|
|
|
|
-- Start of processing for Analyze_Pragma
|
|
|
|
begin
|
|
-- Deal with unrecognized pragma
|
|
|
|
if not Is_Pragma_Name (Pname) then
|
|
if Warn_On_Unrecognized_Pragma then
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N ("?unrecognized pragma%!", Pragma_Identifier (N));
|
|
|
|
for PN in First_Pragma_Name .. Last_Pragma_Name loop
|
|
if Is_Bad_Spelling_Of (Pname, PN) then
|
|
Error_Msg_Name_1 := PN;
|
|
Error_Msg_N -- CODEFIX
|
|
("\?possible misspelling of %!", Pragma_Identifier (N));
|
|
exit;
|
|
end if;
|
|
end loop;
|
|
end if;
|
|
|
|
return;
|
|
end if;
|
|
|
|
-- Here to start processing for recognized pragma
|
|
|
|
Prag_Id := Get_Pragma_Id (Pname);
|
|
|
|
-- Preset arguments
|
|
|
|
Arg1 := Empty;
|
|
Arg2 := Empty;
|
|
Arg3 := Empty;
|
|
Arg4 := Empty;
|
|
|
|
if Present (Pragma_Argument_Associations (N)) then
|
|
Arg1 := First (Pragma_Argument_Associations (N));
|
|
|
|
if Present (Arg1) then
|
|
Arg2 := Next (Arg1);
|
|
|
|
if Present (Arg2) then
|
|
Arg3 := Next (Arg2);
|
|
|
|
if Present (Arg3) then
|
|
Arg4 := Next (Arg3);
|
|
end if;
|
|
end if;
|
|
end if;
|
|
end if;
|
|
|
|
-- Count number of arguments
|
|
|
|
declare
|
|
Arg_Node : Node_Id;
|
|
begin
|
|
Arg_Count := 0;
|
|
Arg_Node := Arg1;
|
|
while Present (Arg_Node) loop
|
|
Arg_Count := Arg_Count + 1;
|
|
Next (Arg_Node);
|
|
end loop;
|
|
end;
|
|
|
|
-- An enumeration type defines the pragmas that are supported by the
|
|
-- implementation. Get_Pragma_Id (in package Prag) transforms a name
|
|
-- into the corresponding enumeration value for the following case.
|
|
|
|
case Prag_Id is
|
|
|
|
-----------------
|
|
-- Abort_Defer --
|
|
-----------------
|
|
|
|
-- pragma Abort_Defer;
|
|
|
|
when Pragma_Abort_Defer =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
|
|
-- The only required semantic processing is to check the
|
|
-- placement. This pragma must appear at the start of the
|
|
-- statement sequence of a handled sequence of statements.
|
|
|
|
if Nkind (Parent (N)) /= N_Handled_Sequence_Of_Statements
|
|
or else N /= First (Statements (Parent (N)))
|
|
then
|
|
Pragma_Misplaced;
|
|
end if;
|
|
|
|
------------
|
|
-- Ada_83 --
|
|
------------
|
|
|
|
-- pragma Ada_83;
|
|
|
|
-- Note: this pragma also has some specific processing in Par.Prag
|
|
-- because we want to set the Ada version mode during parsing.
|
|
|
|
when Pragma_Ada_83 =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
|
|
-- We really should check unconditionally for proper configuration
|
|
-- pragma placement, since we really don't want mixed Ada modes
|
|
-- within a single unit, and the GNAT reference manual has always
|
|
-- said this was a configuration pragma, but we did not check and
|
|
-- are hesitant to add the check now.
|
|
|
|
-- However, we really cannot tolerate mixing Ada 2005 with Ada 83
|
|
-- or Ada 95, so we must check if we are in Ada 2005 mode.
|
|
|
|
if Ada_Version >= Ada_05 then
|
|
Check_Valid_Configuration_Pragma;
|
|
end if;
|
|
|
|
-- Now set Ada 83 mode
|
|
|
|
Ada_Version := Ada_83;
|
|
Ada_Version_Explicit := Ada_Version;
|
|
|
|
------------
|
|
-- Ada_95 --
|
|
------------
|
|
|
|
-- pragma Ada_95;
|
|
|
|
-- Note: this pragma also has some specific processing in Par.Prag
|
|
-- because we want to set the Ada 83 version mode during parsing.
|
|
|
|
when Pragma_Ada_95 =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
|
|
-- We really should check unconditionally for proper configuration
|
|
-- pragma placement, since we really don't want mixed Ada modes
|
|
-- within a single unit, and the GNAT reference manual has always
|
|
-- said this was a configuration pragma, but we did not check and
|
|
-- are hesitant to add the check now.
|
|
|
|
-- However, we really cannot tolerate mixing Ada 2005 with Ada 83
|
|
-- or Ada 95, so we must check if we are in Ada 2005 mode.
|
|
|
|
if Ada_Version >= Ada_05 then
|
|
Check_Valid_Configuration_Pragma;
|
|
end if;
|
|
|
|
-- Now set Ada 95 mode
|
|
|
|
Ada_Version := Ada_95;
|
|
Ada_Version_Explicit := Ada_Version;
|
|
|
|
---------------------
|
|
-- Ada_05/Ada_2005 --
|
|
---------------------
|
|
|
|
-- pragma Ada_05;
|
|
-- pragma Ada_05 (LOCAL_NAME);
|
|
|
|
-- pragma Ada_2005;
|
|
-- pragma Ada_2005 (LOCAL_NAME):
|
|
|
|
-- Note: these pragma also have some specific processing in Par.Prag
|
|
-- because we want to set the Ada 2005 version mode during parsing.
|
|
|
|
when Pragma_Ada_05 | Pragma_Ada_2005 => declare
|
|
E_Id : Node_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
|
|
if Arg_Count = 1 then
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
E_Id := Expression (Arg1);
|
|
|
|
if Etype (E_Id) = Any_Type then
|
|
return;
|
|
end if;
|
|
|
|
Set_Is_Ada_2005_Only (Entity (E_Id));
|
|
|
|
else
|
|
Check_Arg_Count (0);
|
|
|
|
-- For Ada_2005 we unconditionally enforce the documented
|
|
-- configuration pragma placement, since we do not want to
|
|
-- tolerate mixed modes in a unit involving Ada 2005. That
|
|
-- would cause real difficulties for those cases where there
|
|
-- are incompatibilities between Ada 95 and Ada 2005.
|
|
|
|
Check_Valid_Configuration_Pragma;
|
|
|
|
-- Now set Ada 2005 mode
|
|
|
|
Ada_Version := Ada_05;
|
|
Ada_Version_Explicit := Ada_05;
|
|
end if;
|
|
end;
|
|
|
|
----------------------
|
|
-- All_Calls_Remote --
|
|
----------------------
|
|
|
|
-- pragma All_Calls_Remote [(library_package_NAME)];
|
|
|
|
when Pragma_All_Calls_Remote => All_Calls_Remote : declare
|
|
Lib_Entity : Entity_Id;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_Valid_Library_Unit_Pragma;
|
|
|
|
if Nkind (N) = N_Null_Statement then
|
|
return;
|
|
end if;
|
|
|
|
Lib_Entity := Find_Lib_Unit_Name;
|
|
|
|
-- This pragma should only apply to a RCI unit (RM E.2.3(23))
|
|
|
|
if Present (Lib_Entity)
|
|
and then not Debug_Flag_U
|
|
then
|
|
if not Is_Remote_Call_Interface (Lib_Entity) then
|
|
Error_Pragma ("pragma% only apply to rci unit");
|
|
|
|
-- Set flag for entity of the library unit
|
|
|
|
else
|
|
Set_Has_All_Calls_Remote (Lib_Entity);
|
|
end if;
|
|
|
|
end if;
|
|
end All_Calls_Remote;
|
|
|
|
--------------
|
|
-- Annotate --
|
|
--------------
|
|
|
|
-- pragma Annotate (IDENTIFIER [, IDENTIFIER {, ARG}]);
|
|
-- ARG ::= NAME | EXPRESSION
|
|
|
|
-- The first two arguments are by convention intended to refer to an
|
|
-- external tool and a tool-specific function. These arguments are
|
|
-- not analyzed.
|
|
|
|
when Pragma_Annotate => Annotate : begin
|
|
GNAT_Pragma;
|
|
Check_At_Least_N_Arguments (1);
|
|
Check_Arg_Is_Identifier (Arg1);
|
|
|
|
declare
|
|
Arg : Node_Id;
|
|
Exp : Node_Id;
|
|
|
|
begin
|
|
-- Second unanalyzed parameter is optional
|
|
|
|
if No (Arg2) then
|
|
null;
|
|
else
|
|
Arg := Next (Arg2);
|
|
while Present (Arg) loop
|
|
Exp := Expression (Arg);
|
|
Analyze (Exp);
|
|
|
|
if Is_Entity_Name (Exp) then
|
|
null;
|
|
|
|
-- For string literals, we assume Standard_String as the
|
|
-- type, unless the string contains wide or wide_wide
|
|
-- characters.
|
|
|
|
elsif Nkind (Exp) = N_String_Literal then
|
|
if Has_Wide_Wide_Character (Exp) then
|
|
Resolve (Exp, Standard_Wide_Wide_String);
|
|
elsif Has_Wide_Character (Exp) then
|
|
Resolve (Exp, Standard_Wide_String);
|
|
else
|
|
Resolve (Exp, Standard_String);
|
|
end if;
|
|
|
|
elsif Is_Overloaded (Exp) then
|
|
Error_Pragma_Arg
|
|
("ambiguous argument for pragma%", Exp);
|
|
|
|
else
|
|
Resolve (Exp);
|
|
end if;
|
|
|
|
Next (Arg);
|
|
end loop;
|
|
end if;
|
|
end;
|
|
end Annotate;
|
|
|
|
------------
|
|
-- Assert --
|
|
------------
|
|
|
|
-- pragma Assert ([Check =>] Boolean_EXPRESSION
|
|
-- [, [Message =>] Static_String_EXPRESSION]);
|
|
|
|
when Pragma_Assert => Assert : declare
|
|
Expr : Node_Id;
|
|
Newa : List_Id;
|
|
|
|
begin
|
|
Ada_2005_Pragma;
|
|
Check_At_Least_N_Arguments (1);
|
|
Check_At_Most_N_Arguments (2);
|
|
Check_Arg_Order ((Name_Check, Name_Message));
|
|
Check_Optional_Identifier (Arg1, Name_Check);
|
|
|
|
-- We treat pragma Assert as equivalent to:
|
|
|
|
-- pragma Check (Assertion, condition [, msg]);
|
|
|
|
-- So rewrite pragma in this manner, and analyze the result
|
|
|
|
Expr := Get_Pragma_Arg (Arg1);
|
|
Newa := New_List (
|
|
Make_Pragma_Argument_Association (Loc,
|
|
Expression =>
|
|
Make_Identifier (Loc,
|
|
Chars => Name_Assertion)),
|
|
|
|
Make_Pragma_Argument_Association (Sloc (Expr),
|
|
Expression => Expr));
|
|
|
|
if Arg_Count > 1 then
|
|
Check_Optional_Identifier (Arg2, Name_Message);
|
|
Analyze_And_Resolve (Get_Pragma_Arg (Arg2), Standard_String);
|
|
Append_To (Newa, Relocate_Node (Arg2));
|
|
end if;
|
|
|
|
Rewrite (N,
|
|
Make_Pragma (Loc,
|
|
Chars => Name_Check,
|
|
Pragma_Argument_Associations => Newa));
|
|
Analyze (N);
|
|
end Assert;
|
|
|
|
----------------------
|
|
-- Assertion_Policy --
|
|
----------------------
|
|
|
|
-- pragma Assertion_Policy (Check | Ignore)
|
|
|
|
when Pragma_Assertion_Policy => Assertion_Policy : declare
|
|
Policy : Node_Id;
|
|
|
|
begin
|
|
Ada_2005_Pragma;
|
|
Check_Valid_Configuration_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_One_Of (Arg1, Name_Check, Name_Ignore);
|
|
|
|
-- We treat pragma Assertion_Policy as equivalent to:
|
|
|
|
-- pragma Check_Policy (Assertion, policy)
|
|
|
|
-- So rewrite the pragma in that manner and link on to the chain
|
|
-- of Check_Policy pragmas, marking the pragma as analyzed.
|
|
|
|
Policy := Get_Pragma_Arg (Arg1);
|
|
|
|
Rewrite (N,
|
|
Make_Pragma (Loc,
|
|
Chars => Name_Check_Policy,
|
|
|
|
Pragma_Argument_Associations => New_List (
|
|
Make_Pragma_Argument_Association (Loc,
|
|
Expression =>
|
|
Make_Identifier (Loc,
|
|
Chars => Name_Assertion)),
|
|
|
|
Make_Pragma_Argument_Association (Loc,
|
|
Expression =>
|
|
Make_Identifier (Sloc (Policy),
|
|
Chars => Chars (Policy))))));
|
|
|
|
Set_Analyzed (N);
|
|
Set_Next_Pragma (N, Opt.Check_Policy_List);
|
|
Opt.Check_Policy_List := N;
|
|
end Assertion_Policy;
|
|
|
|
------------------------------
|
|
-- Assume_No_Invalid_Values --
|
|
------------------------------
|
|
|
|
-- pragma Assume_No_Invalid_Values (On | Off);
|
|
|
|
when Pragma_Assume_No_Invalid_Values =>
|
|
GNAT_Pragma;
|
|
Check_Valid_Configuration_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
|
|
|
|
if Chars (Expression (Arg1)) = Name_On then
|
|
Assume_No_Invalid_Values := True;
|
|
else
|
|
Assume_No_Invalid_Values := False;
|
|
end if;
|
|
|
|
---------------
|
|
-- AST_Entry --
|
|
---------------
|
|
|
|
-- pragma AST_Entry (entry_IDENTIFIER);
|
|
|
|
when Pragma_AST_Entry => AST_Entry : declare
|
|
Ent : Node_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_VMS (N);
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
Ent := Entity (Expression (Arg1));
|
|
|
|
-- Note: the implementation of the AST_Entry pragma could handle
|
|
-- the entry family case fine, but for now we are consistent with
|
|
-- the DEC rules, and do not allow the pragma, which of course
|
|
-- has the effect of also forbidding the attribute.
|
|
|
|
if Ekind (Ent) /= E_Entry then
|
|
Error_Pragma_Arg
|
|
("pragma% argument must be simple entry name", Arg1);
|
|
|
|
elsif Is_AST_Entry (Ent) then
|
|
Error_Pragma_Arg
|
|
("duplicate % pragma for entry", Arg1);
|
|
|
|
elsif Has_Homonym (Ent) then
|
|
Error_Pragma_Arg
|
|
("pragma% argument cannot specify overloaded entry", Arg1);
|
|
|
|
else
|
|
declare
|
|
FF : constant Entity_Id := First_Formal (Ent);
|
|
|
|
begin
|
|
if Present (FF) then
|
|
if Present (Next_Formal (FF)) then
|
|
Error_Pragma_Arg
|
|
("entry for pragma% can have only one argument",
|
|
Arg1);
|
|
|
|
elsif Parameter_Mode (FF) /= E_In_Parameter then
|
|
Error_Pragma_Arg
|
|
("entry parameter for pragma% must have mode IN",
|
|
Arg1);
|
|
end if;
|
|
end if;
|
|
end;
|
|
|
|
Set_Is_AST_Entry (Ent);
|
|
end if;
|
|
end AST_Entry;
|
|
|
|
------------------
|
|
-- Asynchronous --
|
|
------------------
|
|
|
|
-- pragma Asynchronous (LOCAL_NAME);
|
|
|
|
when Pragma_Asynchronous => Asynchronous : declare
|
|
Nm : Entity_Id;
|
|
C_Ent : Entity_Id;
|
|
L : List_Id;
|
|
S : Node_Id;
|
|
N : Node_Id;
|
|
Formal : Entity_Id;
|
|
|
|
procedure Process_Async_Pragma;
|
|
-- Common processing for procedure and access-to-procedure case
|
|
|
|
--------------------------
|
|
-- Process_Async_Pragma --
|
|
--------------------------
|
|
|
|
procedure Process_Async_Pragma is
|
|
begin
|
|
if No (L) then
|
|
Set_Is_Asynchronous (Nm);
|
|
return;
|
|
end if;
|
|
|
|
-- The formals should be of mode IN (RM E.4.1(6))
|
|
|
|
S := First (L);
|
|
while Present (S) loop
|
|
Formal := Defining_Identifier (S);
|
|
|
|
if Nkind (Formal) = N_Defining_Identifier
|
|
and then Ekind (Formal) /= E_In_Parameter
|
|
then
|
|
Error_Pragma_Arg
|
|
("pragma% procedure can only have IN parameter",
|
|
Arg1);
|
|
end if;
|
|
|
|
Next (S);
|
|
end loop;
|
|
|
|
Set_Is_Asynchronous (Nm);
|
|
end Process_Async_Pragma;
|
|
|
|
-- Start of processing for pragma Asynchronous
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
|
|
if Debug_Flag_U then
|
|
return;
|
|
end if;
|
|
|
|
C_Ent := Cunit_Entity (Current_Sem_Unit);
|
|
Analyze (Expression (Arg1));
|
|
Nm := Entity (Expression (Arg1));
|
|
|
|
if not Is_Remote_Call_Interface (C_Ent)
|
|
and then not Is_Remote_Types (C_Ent)
|
|
then
|
|
-- This pragma should only appear in an RCI or Remote Types
|
|
-- unit (RM E.4.1(4)).
|
|
|
|
Error_Pragma
|
|
("pragma% not in Remote_Call_Interface or " &
|
|
"Remote_Types unit");
|
|
end if;
|
|
|
|
if Ekind (Nm) = E_Procedure
|
|
and then Nkind (Parent (Nm)) = N_Procedure_Specification
|
|
then
|
|
if not Is_Remote_Call_Interface (Nm) then
|
|
Error_Pragma_Arg
|
|
("pragma% cannot be applied on non-remote procedure",
|
|
Arg1);
|
|
end if;
|
|
|
|
L := Parameter_Specifications (Parent (Nm));
|
|
Process_Async_Pragma;
|
|
return;
|
|
|
|
elsif Ekind (Nm) = E_Function then
|
|
Error_Pragma_Arg
|
|
("pragma% cannot be applied to function", Arg1);
|
|
|
|
elsif Is_Remote_Access_To_Subprogram_Type (Nm) then
|
|
|
|
if Is_Record_Type (Nm) then
|
|
|
|
-- A record type that is the Equivalent_Type for a remote
|
|
-- access-to-subprogram type.
|
|
|
|
N := Declaration_Node (Corresponding_Remote_Type (Nm));
|
|
|
|
else
|
|
-- A non-expanded RAS type (distribution is not enabled)
|
|
|
|
N := Declaration_Node (Nm);
|
|
end if;
|
|
|
|
if Nkind (N) = N_Full_Type_Declaration
|
|
and then Nkind (Type_Definition (N)) =
|
|
N_Access_Procedure_Definition
|
|
then
|
|
L := Parameter_Specifications (Type_Definition (N));
|
|
Process_Async_Pragma;
|
|
|
|
if Is_Asynchronous (Nm)
|
|
and then Expander_Active
|
|
and then Get_PCS_Name /= Name_No_DSA
|
|
then
|
|
RACW_Type_Is_Asynchronous (Underlying_RACW_Type (Nm));
|
|
end if;
|
|
|
|
else
|
|
Error_Pragma_Arg
|
|
("pragma% cannot reference access-to-function type",
|
|
Arg1);
|
|
end if;
|
|
|
|
-- Only other possibility is Access-to-class-wide type
|
|
|
|
elsif Is_Access_Type (Nm)
|
|
and then Is_Class_Wide_Type (Designated_Type (Nm))
|
|
then
|
|
Check_First_Subtype (Arg1);
|
|
Set_Is_Asynchronous (Nm);
|
|
if Expander_Active then
|
|
RACW_Type_Is_Asynchronous (Nm);
|
|
end if;
|
|
|
|
else
|
|
Error_Pragma_Arg ("inappropriate argument for pragma%", Arg1);
|
|
end if;
|
|
end Asynchronous;
|
|
|
|
------------
|
|
-- Atomic --
|
|
------------
|
|
|
|
-- pragma Atomic (LOCAL_NAME);
|
|
|
|
when Pragma_Atomic =>
|
|
Process_Atomic_Shared_Volatile;
|
|
|
|
-----------------------
|
|
-- Atomic_Components --
|
|
-----------------------
|
|
|
|
-- pragma Atomic_Components (array_LOCAL_NAME);
|
|
|
|
-- This processing is shared by Volatile_Components
|
|
|
|
when Pragma_Atomic_Components |
|
|
Pragma_Volatile_Components =>
|
|
|
|
Atomic_Components : declare
|
|
E_Id : Node_Id;
|
|
E : Entity_Id;
|
|
D : Node_Id;
|
|
K : Node_Kind;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
E_Id := Expression (Arg1);
|
|
|
|
if Etype (E_Id) = Any_Type then
|
|
return;
|
|
end if;
|
|
|
|
E := Entity (E_Id);
|
|
|
|
if Rep_Item_Too_Early (E, N)
|
|
or else
|
|
Rep_Item_Too_Late (E, N)
|
|
then
|
|
return;
|
|
end if;
|
|
|
|
D := Declaration_Node (E);
|
|
K := Nkind (D);
|
|
|
|
if (K = N_Full_Type_Declaration and then Is_Array_Type (E))
|
|
or else
|
|
((Ekind (E) = E_Constant or else Ekind (E) = E_Variable)
|
|
and then Nkind (D) = N_Object_Declaration
|
|
and then Nkind (Object_Definition (D)) =
|
|
N_Constrained_Array_Definition)
|
|
then
|
|
-- The flag is set on the object, or on the base type
|
|
|
|
if Nkind (D) /= N_Object_Declaration then
|
|
E := Base_Type (E);
|
|
end if;
|
|
|
|
Set_Has_Volatile_Components (E);
|
|
|
|
if Prag_Id = Pragma_Atomic_Components then
|
|
Set_Has_Atomic_Components (E);
|
|
|
|
if Is_Packed (E) then
|
|
Set_Is_Packed (E, False);
|
|
|
|
Error_Pragma_Arg
|
|
("?Pack canceled, cannot pack atomic components",
|
|
Arg1);
|
|
end if;
|
|
end if;
|
|
|
|
else
|
|
Error_Pragma_Arg ("inappropriate entity for pragma%", Arg1);
|
|
end if;
|
|
end Atomic_Components;
|
|
|
|
--------------------
|
|
-- Attach_Handler --
|
|
--------------------
|
|
|
|
-- pragma Attach_Handler (handler_NAME, EXPRESSION);
|
|
|
|
when Pragma_Attach_Handler =>
|
|
Check_Ada_83_Warning;
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (2);
|
|
|
|
if No_Run_Time_Mode then
|
|
Error_Msg_CRT ("Attach_Handler pragma", N);
|
|
else
|
|
Check_Interrupt_Or_Attach_Handler;
|
|
|
|
-- The expression that designates the attribute may
|
|
-- depend on a discriminant, and is therefore a per-
|
|
-- object expression, to be expanded in the init proc.
|
|
-- If expansion is enabled, perform semantic checks
|
|
-- on a copy only.
|
|
|
|
if Expander_Active then
|
|
declare
|
|
Temp : constant Node_Id :=
|
|
New_Copy_Tree (Expression (Arg2));
|
|
begin
|
|
Set_Parent (Temp, N);
|
|
Preanalyze_And_Resolve (Temp, RTE (RE_Interrupt_ID));
|
|
end;
|
|
|
|
else
|
|
Analyze (Expression (Arg2));
|
|
Resolve (Expression (Arg2), RTE (RE_Interrupt_ID));
|
|
end if;
|
|
|
|
Process_Interrupt_Or_Attach_Handler;
|
|
end if;
|
|
|
|
--------------------
|
|
-- C_Pass_By_Copy --
|
|
--------------------
|
|
|
|
-- pragma C_Pass_By_Copy ([Max_Size =>] static_integer_EXPRESSION);
|
|
|
|
when Pragma_C_Pass_By_Copy => C_Pass_By_Copy : declare
|
|
Arg : Node_Id;
|
|
Val : Uint;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Valid_Configuration_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, "max_size");
|
|
|
|
Arg := Expression (Arg1);
|
|
Check_Arg_Is_Static_Expression (Arg, Any_Integer);
|
|
|
|
Val := Expr_Value (Arg);
|
|
|
|
if Val <= 0 then
|
|
Error_Pragma_Arg
|
|
("maximum size for pragma% must be positive", Arg1);
|
|
|
|
elsif UI_Is_In_Int_Range (Val) then
|
|
Default_C_Record_Mechanism := UI_To_Int (Val);
|
|
|
|
-- If a giant value is given, Int'Last will do well enough.
|
|
-- If sometime someone complains that a record larger than
|
|
-- two gigabytes is not copied, we will worry about it then!
|
|
|
|
else
|
|
Default_C_Record_Mechanism := Mechanism_Type'Last;
|
|
end if;
|
|
end C_Pass_By_Copy;
|
|
|
|
-----------
|
|
-- Check --
|
|
-----------
|
|
|
|
-- pragma Check ([Name =>] Identifier,
|
|
-- [Check =>] Boolean_Expression
|
|
-- [,[Message =>] String_Expression]);
|
|
|
|
when Pragma_Check => Check : declare
|
|
Expr : Node_Id;
|
|
Eloc : Source_Ptr;
|
|
|
|
Check_On : Boolean;
|
|
-- Set True if category of assertions referenced by Name enabled
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_At_Least_N_Arguments (2);
|
|
Check_At_Most_N_Arguments (3);
|
|
Check_Optional_Identifier (Arg1, Name_Name);
|
|
Check_Optional_Identifier (Arg2, Name_Check);
|
|
|
|
if Arg_Count = 3 then
|
|
Check_Optional_Identifier (Arg3, Name_Message);
|
|
Analyze_And_Resolve (Get_Pragma_Arg (Arg3), Standard_String);
|
|
end if;
|
|
|
|
Check_Arg_Is_Identifier (Arg1);
|
|
Check_On := Check_Enabled (Chars (Get_Pragma_Arg (Arg1)));
|
|
Set_Pragma_Enabled (N, Check_On);
|
|
|
|
-- If expansion is active and the check is not enabled then we
|
|
-- rewrite the Check as:
|
|
|
|
-- if False and then condition then
|
|
-- null;
|
|
-- end if;
|
|
|
|
-- The reason we do this rewriting during semantic analysis rather
|
|
-- than as part of normal expansion is that we cannot analyze and
|
|
-- expand the code for the boolean expression directly, or it may
|
|
-- cause insertion of actions that would escape the attempt to
|
|
-- suppress the check code.
|
|
|
|
-- Note that the Sloc for the if statement corresponds to the
|
|
-- argument condition, not the pragma itself. The reason for this
|
|
-- is that we may generate a warning if the condition is False at
|
|
-- compile time, and we do not want to delete this warning when we
|
|
-- delete the if statement.
|
|
|
|
Expr := Expression (Arg2);
|
|
|
|
if Expander_Active and then not Check_On then
|
|
Eloc := Sloc (Expr);
|
|
|
|
Rewrite (N,
|
|
Make_If_Statement (Eloc,
|
|
Condition =>
|
|
Make_And_Then (Eloc,
|
|
Left_Opnd => New_Occurrence_Of (Standard_False, Eloc),
|
|
Right_Opnd => Expr),
|
|
Then_Statements => New_List (
|
|
Make_Null_Statement (Eloc))));
|
|
|
|
Analyze (N);
|
|
|
|
-- Check is active
|
|
|
|
else
|
|
Analyze_And_Resolve (Expr, Any_Boolean);
|
|
end if;
|
|
end Check;
|
|
|
|
----------------
|
|
-- Check_Name --
|
|
----------------
|
|
|
|
-- pragma Check_Name (check_IDENTIFIER);
|
|
|
|
when Pragma_Check_Name =>
|
|
Check_No_Identifiers;
|
|
GNAT_Pragma;
|
|
Check_Valid_Configuration_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_Identifier (Arg1);
|
|
|
|
declare
|
|
Nam : constant Name_Id := Chars (Expression (Arg1));
|
|
|
|
begin
|
|
for J in Check_Names.First .. Check_Names.Last loop
|
|
if Check_Names.Table (J) = Nam then
|
|
return;
|
|
end if;
|
|
end loop;
|
|
|
|
Check_Names.Append (Nam);
|
|
end;
|
|
|
|
------------------
|
|
-- Check_Policy --
|
|
------------------
|
|
|
|
-- pragma Check_Policy (
|
|
-- [Name =>] IDENTIFIER,
|
|
-- [Policy =>] POLICY_IDENTIFIER);
|
|
|
|
-- POLICY_IDENTIFIER ::= ON | OFF | CHECK | IGNORE
|
|
|
|
-- Note: this is a configuration pragma, but it is allowed to appear
|
|
-- anywhere else.
|
|
|
|
when Pragma_Check_Policy =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (2);
|
|
Check_Optional_Identifier (Arg1, Name_Name);
|
|
Check_Optional_Identifier (Arg2, Name_Policy);
|
|
Check_Arg_Is_One_Of
|
|
(Arg2, Name_On, Name_Off, Name_Check, Name_Ignore);
|
|
|
|
-- A Check_Policy pragma can appear either as a configuration
|
|
-- pragma, or in a declarative part or a package spec (see RM
|
|
-- 11.5(5) for rules for Suppress/Unsuppress which are also
|
|
-- followed for Check_Policy).
|
|
|
|
if not Is_Configuration_Pragma then
|
|
Check_Is_In_Decl_Part_Or_Package_Spec;
|
|
end if;
|
|
|
|
Set_Next_Pragma (N, Opt.Check_Policy_List);
|
|
Opt.Check_Policy_List := N;
|
|
|
|
---------------------
|
|
-- CIL_Constructor --
|
|
---------------------
|
|
|
|
-- pragma CIL_Constructor ([Entity =>] LOCAL_NAME);
|
|
|
|
-- Processing for this pragma is shared with Java_Constructor
|
|
|
|
-------------
|
|
-- Comment --
|
|
-------------
|
|
|
|
-- pragma Comment (static_string_EXPRESSION)
|
|
|
|
-- Processing for pragma Comment shares the circuitry for pragma
|
|
-- Ident. The only differences are that Ident enforces a limit of 31
|
|
-- characters on its argument, and also enforces limitations on
|
|
-- placement for DEC compatibility. Pragma Comment shares neither of
|
|
-- these restrictions.
|
|
|
|
-------------------
|
|
-- Common_Object --
|
|
-------------------
|
|
|
|
-- pragma Common_Object (
|
|
-- [Internal =>] LOCAL_NAME
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, [Size =>] EXTERNAL_SYMBOL]);
|
|
|
|
-- Processing for this pragma is shared with Psect_Object
|
|
|
|
------------------------
|
|
-- Compile_Time_Error --
|
|
------------------------
|
|
|
|
-- pragma Compile_Time_Error
|
|
-- (boolean_EXPRESSION, static_string_EXPRESSION);
|
|
|
|
when Pragma_Compile_Time_Error =>
|
|
GNAT_Pragma;
|
|
Process_Compile_Time_Warning_Or_Error;
|
|
|
|
--------------------------
|
|
-- Compile_Time_Warning --
|
|
--------------------------
|
|
|
|
-- pragma Compile_Time_Warning
|
|
-- (boolean_EXPRESSION, static_string_EXPRESSION);
|
|
|
|
when Pragma_Compile_Time_Warning =>
|
|
GNAT_Pragma;
|
|
Process_Compile_Time_Warning_Or_Error;
|
|
|
|
-------------------
|
|
-- Compiler_Unit --
|
|
-------------------
|
|
|
|
when Pragma_Compiler_Unit =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
Set_Is_Compiler_Unit (Get_Source_Unit (N));
|
|
|
|
-----------------------------
|
|
-- Complete_Representation --
|
|
-----------------------------
|
|
|
|
-- pragma Complete_Representation;
|
|
|
|
when Pragma_Complete_Representation =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
|
|
if Nkind (Parent (N)) /= N_Record_Representation_Clause then
|
|
Error_Pragma
|
|
("pragma & must appear within record representation clause");
|
|
end if;
|
|
|
|
----------------------------
|
|
-- Complex_Representation --
|
|
----------------------------
|
|
|
|
-- pragma Complex_Representation ([Entity =>] LOCAL_NAME);
|
|
|
|
when Pragma_Complex_Representation => Complex_Representation : declare
|
|
E_Id : Entity_Id;
|
|
E : Entity_Id;
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
E_Id := Expression (Arg1);
|
|
|
|
if Etype (E_Id) = Any_Type then
|
|
return;
|
|
end if;
|
|
|
|
E := Entity (E_Id);
|
|
|
|
if not Is_Record_Type (E) then
|
|
Error_Pragma_Arg
|
|
("argument for pragma% must be record type", Arg1);
|
|
end if;
|
|
|
|
Ent := First_Entity (E);
|
|
|
|
if No (Ent)
|
|
or else No (Next_Entity (Ent))
|
|
or else Present (Next_Entity (Next_Entity (Ent)))
|
|
or else not Is_Floating_Point_Type (Etype (Ent))
|
|
or else Etype (Ent) /= Etype (Next_Entity (Ent))
|
|
then
|
|
Error_Pragma_Arg
|
|
("record for pragma% must have two fields of the same "
|
|
& "floating-point type", Arg1);
|
|
|
|
else
|
|
Set_Has_Complex_Representation (Base_Type (E));
|
|
|
|
-- We need to treat the type has having a non-standard
|
|
-- representation, for back-end purposes, even though in
|
|
-- general a complex will have the default representation
|
|
-- of a record with two real components.
|
|
|
|
Set_Has_Non_Standard_Rep (Base_Type (E));
|
|
end if;
|
|
end Complex_Representation;
|
|
|
|
-------------------------
|
|
-- Component_Alignment --
|
|
-------------------------
|
|
|
|
-- pragma Component_Alignment (
|
|
-- [Form =>] ALIGNMENT_CHOICE
|
|
-- [, [Name =>] type_LOCAL_NAME]);
|
|
--
|
|
-- ALIGNMENT_CHOICE ::=
|
|
-- Component_Size
|
|
-- | Component_Size_4
|
|
-- | Storage_Unit
|
|
-- | Default
|
|
|
|
when Pragma_Component_Alignment => Component_AlignmentP : declare
|
|
Args : Args_List (1 .. 2);
|
|
Names : constant Name_List (1 .. 2) := (
|
|
Name_Form,
|
|
Name_Name);
|
|
|
|
Form : Node_Id renames Args (1);
|
|
Name : Node_Id renames Args (2);
|
|
|
|
Atype : Component_Alignment_Kind;
|
|
Typ : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
|
|
if No (Form) then
|
|
Error_Pragma ("missing Form argument for pragma%");
|
|
end if;
|
|
|
|
Check_Arg_Is_Identifier (Form);
|
|
|
|
-- Get proper alignment, note that Default = Component_Size on all
|
|
-- machines we have so far, and we want to set this value rather
|
|
-- than the default value to indicate that it has been explicitly
|
|
-- set (and thus will not get overridden by the default component
|
|
-- alignment for the current scope)
|
|
|
|
if Chars (Form) = Name_Component_Size then
|
|
Atype := Calign_Component_Size;
|
|
|
|
elsif Chars (Form) = Name_Component_Size_4 then
|
|
Atype := Calign_Component_Size_4;
|
|
|
|
elsif Chars (Form) = Name_Default then
|
|
Atype := Calign_Component_Size;
|
|
|
|
elsif Chars (Form) = Name_Storage_Unit then
|
|
Atype := Calign_Storage_Unit;
|
|
|
|
else
|
|
Error_Pragma_Arg
|
|
("invalid Form parameter for pragma%", Form);
|
|
end if;
|
|
|
|
-- Case with no name, supplied, affects scope table entry
|
|
|
|
if No (Name) then
|
|
Scope_Stack.Table
|
|
(Scope_Stack.Last).Component_Alignment_Default := Atype;
|
|
|
|
-- Case of name supplied
|
|
|
|
else
|
|
Check_Arg_Is_Local_Name (Name);
|
|
Find_Type (Name);
|
|
Typ := Entity (Name);
|
|
|
|
if Typ = Any_Type
|
|
or else Rep_Item_Too_Early (Typ, N)
|
|
then
|
|
return;
|
|
else
|
|
Typ := Underlying_Type (Typ);
|
|
end if;
|
|
|
|
if not Is_Record_Type (Typ)
|
|
and then not Is_Array_Type (Typ)
|
|
then
|
|
Error_Pragma_Arg
|
|
("Name parameter of pragma% must identify record or " &
|
|
"array type", Name);
|
|
end if;
|
|
|
|
-- An explicit Component_Alignment pragma overrides an
|
|
-- implicit pragma Pack, but not an explicit one.
|
|
|
|
if not Has_Pragma_Pack (Base_Type (Typ)) then
|
|
Set_Is_Packed (Base_Type (Typ), False);
|
|
Set_Component_Alignment (Base_Type (Typ), Atype);
|
|
end if;
|
|
end if;
|
|
end Component_AlignmentP;
|
|
|
|
----------------
|
|
-- Controlled --
|
|
----------------
|
|
|
|
-- pragma Controlled (first_subtype_LOCAL_NAME);
|
|
|
|
when Pragma_Controlled => Controlled : declare
|
|
Arg : Node_Id;
|
|
|
|
begin
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
Arg := Expression (Arg1);
|
|
|
|
if not Is_Entity_Name (Arg)
|
|
or else not Is_Access_Type (Entity (Arg))
|
|
then
|
|
Error_Pragma_Arg ("pragma% requires access type", Arg1);
|
|
else
|
|
Set_Has_Pragma_Controlled (Base_Type (Entity (Arg)));
|
|
end if;
|
|
end Controlled;
|
|
|
|
----------------
|
|
-- Convention --
|
|
----------------
|
|
|
|
-- pragma Convention ([Convention =>] convention_IDENTIFIER,
|
|
-- [Entity =>] LOCAL_NAME);
|
|
|
|
when Pragma_Convention => Convention : declare
|
|
C : Convention_Id;
|
|
E : Entity_Id;
|
|
pragma Warnings (Off, C);
|
|
pragma Warnings (Off, E);
|
|
begin
|
|
Check_Arg_Order ((Name_Convention, Name_Entity));
|
|
Check_Ada_83_Warning;
|
|
Check_Arg_Count (2);
|
|
Process_Convention (C, E);
|
|
end Convention;
|
|
|
|
---------------------------
|
|
-- Convention_Identifier --
|
|
---------------------------
|
|
|
|
-- pragma Convention_Identifier ([Name =>] IDENTIFIER,
|
|
-- [Convention =>] convention_IDENTIFIER);
|
|
|
|
when Pragma_Convention_Identifier => Convention_Identifier : declare
|
|
Idnam : Name_Id;
|
|
Cname : Name_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Order ((Name_Name, Name_Convention));
|
|
Check_Arg_Count (2);
|
|
Check_Optional_Identifier (Arg1, Name_Name);
|
|
Check_Optional_Identifier (Arg2, Name_Convention);
|
|
Check_Arg_Is_Identifier (Arg1);
|
|
Check_Arg_Is_Identifier (Arg2);
|
|
Idnam := Chars (Expression (Arg1));
|
|
Cname := Chars (Expression (Arg2));
|
|
|
|
if Is_Convention_Name (Cname) then
|
|
Record_Convention_Identifier
|
|
(Idnam, Get_Convention_Id (Cname));
|
|
else
|
|
Error_Pragma_Arg
|
|
("second arg for % pragma must be convention", Arg2);
|
|
end if;
|
|
end Convention_Identifier;
|
|
|
|
---------------
|
|
-- CPP_Class --
|
|
---------------
|
|
|
|
-- pragma CPP_Class ([Entity =>] local_NAME)
|
|
|
|
when Pragma_CPP_Class => CPP_Class : declare
|
|
Arg : Node_Id;
|
|
Typ : Entity_Id;
|
|
|
|
begin
|
|
if Warn_On_Obsolescent_Feature then
|
|
Error_Msg_N
|
|
("'G'N'A'T pragma cpp'_class is now obsolete; replace it" &
|
|
" by pragma import?", N);
|
|
end if;
|
|
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
|
|
Arg := Expression (Arg1);
|
|
Analyze (Arg);
|
|
|
|
if Etype (Arg) = Any_Type then
|
|
return;
|
|
end if;
|
|
|
|
if not Is_Entity_Name (Arg)
|
|
or else not Is_Type (Entity (Arg))
|
|
then
|
|
Error_Pragma_Arg ("pragma% requires a type mark", Arg1);
|
|
end if;
|
|
|
|
Typ := Entity (Arg);
|
|
|
|
if not Is_Tagged_Type (Typ) then
|
|
Error_Pragma_Arg ("pragma% applicable to tagged types ", Arg1);
|
|
end if;
|
|
|
|
-- Types treated as CPP classes are treated as limited, but we
|
|
-- don't require them to be declared this way. A warning is issued
|
|
-- to encourage the user to declare them as limited. This is not
|
|
-- an error, for compatibility reasons, because these types have
|
|
-- been supported this way for some time.
|
|
|
|
if not Is_Limited_Type (Typ) then
|
|
Error_Msg_N
|
|
("imported 'C'P'P type should be " &
|
|
"explicitly declared limited?",
|
|
Get_Pragma_Arg (Arg1));
|
|
Error_Msg_N
|
|
("\type will be considered limited",
|
|
Get_Pragma_Arg (Arg1));
|
|
end if;
|
|
|
|
Set_Is_CPP_Class (Typ);
|
|
Set_Is_Limited_Record (Typ);
|
|
Set_Convention (Typ, Convention_CPP);
|
|
|
|
-- Imported CPP types must not have discriminants (because C++
|
|
-- classes do not have discriminants).
|
|
|
|
if Has_Discriminants (Typ) then
|
|
Error_Msg_N
|
|
("imported 'C'P'P type cannot have discriminants",
|
|
First (Discriminant_Specifications
|
|
(Declaration_Node (Typ))));
|
|
end if;
|
|
|
|
-- Components of imported CPP types must not have default
|
|
-- expressions because the constructor (if any) is in the
|
|
-- C++ side.
|
|
|
|
if Is_Incomplete_Or_Private_Type (Typ)
|
|
and then No (Underlying_Type (Typ))
|
|
then
|
|
-- It should be an error to apply pragma CPP to a private
|
|
-- type if the underlying type is not visible (as it is
|
|
-- for any representation item). For now, for backward
|
|
-- compatibility we do nothing but we cannot check components
|
|
-- because they are not available at this stage. All this code
|
|
-- will be removed when we cleanup this obsolete GNAT pragma???
|
|
|
|
null;
|
|
|
|
else
|
|
declare
|
|
Tdef : constant Node_Id :=
|
|
Type_Definition (Declaration_Node (Typ));
|
|
Clist : Node_Id;
|
|
Comp : Node_Id;
|
|
|
|
begin
|
|
if Nkind (Tdef) = N_Record_Definition then
|
|
Clist := Component_List (Tdef);
|
|
else
|
|
pragma Assert (Nkind (Tdef) = N_Derived_Type_Definition);
|
|
Clist := Component_List (Record_Extension_Part (Tdef));
|
|
end if;
|
|
|
|
if Present (Clist) then
|
|
Comp := First (Component_Items (Clist));
|
|
while Present (Comp) loop
|
|
if Present (Expression (Comp)) then
|
|
Error_Msg_N
|
|
("component of imported 'C'P'P type cannot have" &
|
|
" default expression", Expression (Comp));
|
|
end if;
|
|
|
|
Next (Comp);
|
|
end loop;
|
|
end if;
|
|
end;
|
|
end if;
|
|
end CPP_Class;
|
|
|
|
---------------------
|
|
-- CPP_Constructor --
|
|
---------------------
|
|
|
|
-- pragma CPP_Constructor ([Entity =>] LOCAL_NAME
|
|
-- [, [External_Name =>] static_string_EXPRESSION ]
|
|
-- [, [Link_Name =>] static_string_EXPRESSION ]);
|
|
|
|
when Pragma_CPP_Constructor => CPP_Constructor : declare
|
|
Elmt : Elmt_Id;
|
|
Id : Entity_Id;
|
|
Def_Id : Entity_Id;
|
|
Tag_Typ : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_At_Least_N_Arguments (1);
|
|
Check_At_Most_N_Arguments (3);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
|
|
Id := Expression (Arg1);
|
|
Find_Program_Unit_Name (Id);
|
|
|
|
-- If we did not find the name, we are done
|
|
|
|
if Etype (Id) = Any_Type then
|
|
return;
|
|
end if;
|
|
|
|
Def_Id := Entity (Id);
|
|
|
|
if Ekind (Def_Id) = E_Function
|
|
and then (Is_CPP_Class (Etype (Def_Id))
|
|
or else (Is_Class_Wide_Type (Etype (Def_Id))
|
|
and then
|
|
Is_CPP_Class (Root_Type (Etype (Def_Id)))))
|
|
then
|
|
if Arg_Count >= 2 then
|
|
Set_Imported (Def_Id);
|
|
Set_Is_Public (Def_Id);
|
|
Process_Interface_Name (Def_Id, Arg2, Arg3);
|
|
end if;
|
|
|
|
Set_Has_Completion (Def_Id);
|
|
Set_Is_Constructor (Def_Id);
|
|
|
|
-- Imported C++ constructors are not dispatching primitives
|
|
-- because in C++ they don't have a dispatch table slot.
|
|
-- However, in Ada the constructor has the profile of a
|
|
-- function that returns a tagged type and therefore it has
|
|
-- been treated as a primitive operation during semantic
|
|
-- analysis. We now remove it from the list of primitive
|
|
-- operations of the type.
|
|
|
|
if Is_Tagged_Type (Etype (Def_Id))
|
|
and then not Is_Class_Wide_Type (Etype (Def_Id))
|
|
then
|
|
pragma Assert (Is_Dispatching_Operation (Def_Id));
|
|
Tag_Typ := Etype (Def_Id);
|
|
|
|
Elmt := First_Elmt (Primitive_Operations (Tag_Typ));
|
|
while Present (Elmt) and then Node (Elmt) /= Def_Id loop
|
|
Next_Elmt (Elmt);
|
|
end loop;
|
|
|
|
Remove_Elmt (Primitive_Operations (Tag_Typ), Elmt);
|
|
Set_Is_Dispatching_Operation (Def_Id, False);
|
|
end if;
|
|
|
|
-- For backward compatibility, if the constructor returns a
|
|
-- class wide type, and we internally change the return type to
|
|
-- the corresponding root type.
|
|
|
|
if Is_Class_Wide_Type (Etype (Def_Id)) then
|
|
Set_Etype (Def_Id, Root_Type (Etype (Def_Id)));
|
|
end if;
|
|
else
|
|
Error_Pragma_Arg
|
|
("pragma% requires function returning a 'C'P'P_Class type",
|
|
Arg1);
|
|
end if;
|
|
end CPP_Constructor;
|
|
|
|
-----------------
|
|
-- CPP_Virtual --
|
|
-----------------
|
|
|
|
when Pragma_CPP_Virtual => CPP_Virtual : declare
|
|
begin
|
|
GNAT_Pragma;
|
|
|
|
if Warn_On_Obsolescent_Feature then
|
|
Error_Msg_N
|
|
("'G'N'A'T pragma cpp'_virtual is now obsolete and has " &
|
|
"no effect?", N);
|
|
end if;
|
|
end CPP_Virtual;
|
|
|
|
----------------
|
|
-- CPP_Vtable --
|
|
----------------
|
|
|
|
when Pragma_CPP_Vtable => CPP_Vtable : declare
|
|
begin
|
|
GNAT_Pragma;
|
|
|
|
if Warn_On_Obsolescent_Feature then
|
|
Error_Msg_N
|
|
("'G'N'A'T pragma cpp'_vtable is now obsolete and has " &
|
|
"no effect?", N);
|
|
end if;
|
|
end CPP_Vtable;
|
|
|
|
-----------
|
|
-- Debug --
|
|
-----------
|
|
|
|
-- pragma Debug ([boolean_EXPRESSION,] PROCEDURE_CALL_STATEMENT);
|
|
|
|
when Pragma_Debug => Debug : declare
|
|
Cond : Node_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
|
|
Cond :=
|
|
New_Occurrence_Of
|
|
(Boolean_Literals (Debug_Pragmas_Enabled and Expander_Active),
|
|
Loc);
|
|
|
|
if Arg_Count = 2 then
|
|
Cond :=
|
|
Make_And_Then (Loc,
|
|
Left_Opnd => Relocate_Node (Cond),
|
|
Right_Opnd => Expression (Arg1));
|
|
end if;
|
|
|
|
-- Rewrite into a conditional with an appropriate condition. We
|
|
-- wrap the procedure call in a block so that overhead from e.g.
|
|
-- use of the secondary stack does not generate execution overhead
|
|
-- for suppressed conditions.
|
|
|
|
Rewrite (N, Make_Implicit_If_Statement (N,
|
|
Condition => Cond,
|
|
Then_Statements => New_List (
|
|
Make_Block_Statement (Loc,
|
|
Handled_Statement_Sequence =>
|
|
Make_Handled_Sequence_Of_Statements (Loc,
|
|
Statements => New_List (
|
|
Relocate_Node (Debug_Statement (N))))))));
|
|
Analyze (N);
|
|
end Debug;
|
|
|
|
------------------
|
|
-- Debug_Policy --
|
|
------------------
|
|
|
|
-- pragma Debug_Policy (Check | Ignore)
|
|
|
|
when Pragma_Debug_Policy =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_One_Of (Arg1, Name_Check, Name_Ignore);
|
|
Debug_Pragmas_Enabled := Chars (Expression (Arg1)) = Name_Check;
|
|
|
|
---------------------
|
|
-- Detect_Blocking --
|
|
---------------------
|
|
|
|
-- pragma Detect_Blocking;
|
|
|
|
when Pragma_Detect_Blocking =>
|
|
Ada_2005_Pragma;
|
|
Check_Arg_Count (0);
|
|
Check_Valid_Configuration_Pragma;
|
|
Detect_Blocking := True;
|
|
|
|
---------------
|
|
-- Dimension --
|
|
---------------
|
|
|
|
when Pragma_Dimension =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (4);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
|
|
if not Is_Type (Arg1) then
|
|
Error_Pragma ("first argument for pragma% must be subtype");
|
|
end if;
|
|
|
|
Check_Arg_Is_Static_Expression (Arg2, Standard_Integer);
|
|
Check_Arg_Is_Static_Expression (Arg3, Standard_Integer);
|
|
Check_Arg_Is_Static_Expression (Arg4, Standard_Integer);
|
|
|
|
-------------------
|
|
-- Discard_Names --
|
|
-------------------
|
|
|
|
-- pragma Discard_Names [([On =>] LOCAL_NAME)];
|
|
|
|
when Pragma_Discard_Names => Discard_Names : declare
|
|
E : Entity_Id;
|
|
E_Id : Entity_Id;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
|
|
-- Deal with configuration pragma case
|
|
|
|
if Arg_Count = 0 and then Is_Configuration_Pragma then
|
|
Global_Discard_Names := True;
|
|
return;
|
|
|
|
-- Otherwise, check correct appropriate context
|
|
|
|
else
|
|
Check_Is_In_Decl_Part_Or_Package_Spec;
|
|
|
|
if Arg_Count = 0 then
|
|
|
|
-- If there is no parameter, then from now on this pragma
|
|
-- applies to any enumeration, exception or tagged type
|
|
-- defined in the current declarative part, and recursively
|
|
-- to any nested scope.
|
|
|
|
Set_Discard_Names (Current_Scope);
|
|
return;
|
|
|
|
else
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_On);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
|
|
E_Id := Expression (Arg1);
|
|
|
|
if Etype (E_Id) = Any_Type then
|
|
return;
|
|
else
|
|
E := Entity (E_Id);
|
|
end if;
|
|
|
|
if (Is_First_Subtype (E)
|
|
and then
|
|
(Is_Enumeration_Type (E) or else Is_Tagged_Type (E)))
|
|
or else Ekind (E) = E_Exception
|
|
then
|
|
Set_Discard_Names (E);
|
|
else
|
|
Error_Pragma_Arg
|
|
("inappropriate entity for pragma%", Arg1);
|
|
end if;
|
|
|
|
end if;
|
|
end if;
|
|
end Discard_Names;
|
|
|
|
---------------
|
|
-- Elaborate --
|
|
---------------
|
|
|
|
-- pragma Elaborate (library_unit_NAME {, library_unit_NAME});
|
|
|
|
when Pragma_Elaborate => Elaborate : declare
|
|
Arg : Node_Id;
|
|
Citem : Node_Id;
|
|
|
|
begin
|
|
-- Pragma must be in context items list of a compilation unit
|
|
|
|
if not Is_In_Context_Clause then
|
|
Pragma_Misplaced;
|
|
end if;
|
|
|
|
-- Must be at least one argument
|
|
|
|
if Arg_Count = 0 then
|
|
Error_Pragma ("pragma% requires at least one argument");
|
|
end if;
|
|
|
|
-- In Ada 83 mode, there can be no items following it in the
|
|
-- context list except other pragmas and implicit with clauses
|
|
-- (e.g. those added by use of Rtsfind). In Ada 95 mode, this
|
|
-- placement rule does not apply.
|
|
|
|
if Ada_Version = Ada_83 and then Comes_From_Source (N) then
|
|
Citem := Next (N);
|
|
while Present (Citem) loop
|
|
if Nkind (Citem) = N_Pragma
|
|
or else (Nkind (Citem) = N_With_Clause
|
|
and then Implicit_With (Citem))
|
|
then
|
|
null;
|
|
else
|
|
Error_Pragma
|
|
("(Ada 83) pragma% must be at end of context clause");
|
|
end if;
|
|
|
|
Next (Citem);
|
|
end loop;
|
|
end if;
|
|
|
|
-- Finally, the arguments must all be units mentioned in a with
|
|
-- clause in the same context clause. Note we already checked (in
|
|
-- Par.Prag) that the arguments are all identifiers or selected
|
|
-- components.
|
|
|
|
Arg := Arg1;
|
|
Outer : while Present (Arg) loop
|
|
Citem := First (List_Containing (N));
|
|
Inner : while Citem /= N loop
|
|
if Nkind (Citem) = N_With_Clause
|
|
and then Same_Name (Name (Citem), Expression (Arg))
|
|
then
|
|
Set_Elaborate_Present (Citem, True);
|
|
Set_Unit_Name (Expression (Arg), Name (Citem));
|
|
|
|
-- With the pragma present, elaboration calls on
|
|
-- subprograms from the named unit need no further
|
|
-- checks, as long as the pragma appears in the current
|
|
-- compilation unit. If the pragma appears in some unit
|
|
-- in the context, there might still be a need for an
|
|
-- Elaborate_All_Desirable from the current compilation
|
|
-- to the named unit, so we keep the check enabled.
|
|
|
|
if In_Extended_Main_Source_Unit (N) then
|
|
Set_Suppress_Elaboration_Warnings
|
|
(Entity (Name (Citem)));
|
|
end if;
|
|
|
|
exit Inner;
|
|
end if;
|
|
|
|
Next (Citem);
|
|
end loop Inner;
|
|
|
|
if Citem = N then
|
|
Error_Pragma_Arg
|
|
("argument of pragma% is not with'ed unit", Arg);
|
|
end if;
|
|
|
|
Next (Arg);
|
|
end loop Outer;
|
|
|
|
-- Give a warning if operating in static mode with -gnatwl
|
|
-- (elaboration warnings enabled) switch set.
|
|
|
|
if Elab_Warnings and not Dynamic_Elaboration_Checks then
|
|
Error_Msg_N
|
|
("?use of pragma Elaborate may not be safe", N);
|
|
Error_Msg_N
|
|
("?use pragma Elaborate_All instead if possible", N);
|
|
end if;
|
|
end Elaborate;
|
|
|
|
-------------------
|
|
-- Elaborate_All --
|
|
-------------------
|
|
|
|
-- pragma Elaborate_All (library_unit_NAME {, library_unit_NAME});
|
|
|
|
when Pragma_Elaborate_All => Elaborate_All : declare
|
|
Arg : Node_Id;
|
|
Citem : Node_Id;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
|
|
-- Pragma must be in context items list of a compilation unit
|
|
|
|
if not Is_In_Context_Clause then
|
|
Pragma_Misplaced;
|
|
end if;
|
|
|
|
-- Must be at least one argument
|
|
|
|
if Arg_Count = 0 then
|
|
Error_Pragma ("pragma% requires at least one argument");
|
|
end if;
|
|
|
|
-- Note: unlike pragma Elaborate, pragma Elaborate_All does not
|
|
-- have to appear at the end of the context clause, but may
|
|
-- appear mixed in with other items, even in Ada 83 mode.
|
|
|
|
-- Final check: the arguments must all be units mentioned in
|
|
-- a with clause in the same context clause. Note that we
|
|
-- already checked (in Par.Prag) that all the arguments are
|
|
-- either identifiers or selected components.
|
|
|
|
Arg := Arg1;
|
|
Outr : while Present (Arg) loop
|
|
Citem := First (List_Containing (N));
|
|
Innr : while Citem /= N loop
|
|
if Nkind (Citem) = N_With_Clause
|
|
and then Same_Name (Name (Citem), Expression (Arg))
|
|
then
|
|
Set_Elaborate_All_Present (Citem, True);
|
|
Set_Unit_Name (Expression (Arg), Name (Citem));
|
|
|
|
-- Suppress warnings and elaboration checks on the named
|
|
-- unit if the pragma is in the current compilation, as
|
|
-- for pragma Elaborate.
|
|
|
|
if In_Extended_Main_Source_Unit (N) then
|
|
Set_Suppress_Elaboration_Warnings
|
|
(Entity (Name (Citem)));
|
|
end if;
|
|
exit Innr;
|
|
end if;
|
|
|
|
Next (Citem);
|
|
end loop Innr;
|
|
|
|
if Citem = N then
|
|
Set_Error_Posted (N);
|
|
Error_Pragma_Arg
|
|
("argument of pragma% is not with'ed unit", Arg);
|
|
end if;
|
|
|
|
Next (Arg);
|
|
end loop Outr;
|
|
end Elaborate_All;
|
|
|
|
--------------------
|
|
-- Elaborate_Body --
|
|
--------------------
|
|
|
|
-- pragma Elaborate_Body [( library_unit_NAME )];
|
|
|
|
when Pragma_Elaborate_Body => Elaborate_Body : declare
|
|
Cunit_Node : Node_Id;
|
|
Cunit_Ent : Entity_Id;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_Valid_Library_Unit_Pragma;
|
|
|
|
if Nkind (N) = N_Null_Statement then
|
|
return;
|
|
end if;
|
|
|
|
Cunit_Node := Cunit (Current_Sem_Unit);
|
|
Cunit_Ent := Cunit_Entity (Current_Sem_Unit);
|
|
|
|
if Nkind_In (Unit (Cunit_Node), N_Package_Body,
|
|
N_Subprogram_Body)
|
|
then
|
|
Error_Pragma ("pragma% must refer to a spec, not a body");
|
|
else
|
|
Set_Body_Required (Cunit_Node, True);
|
|
Set_Has_Pragma_Elaborate_Body (Cunit_Ent);
|
|
|
|
-- If we are in dynamic elaboration mode, then we suppress
|
|
-- elaboration warnings for the unit, since it is definitely
|
|
-- fine NOT to do dynamic checks at the first level (and such
|
|
-- checks will be suppressed because no elaboration boolean
|
|
-- is created for Elaborate_Body packages).
|
|
|
|
-- But in the static model of elaboration, Elaborate_Body is
|
|
-- definitely NOT good enough to ensure elaboration safety on
|
|
-- its own, since the body may WITH other units that are not
|
|
-- safe from an elaboration point of view, so a client must
|
|
-- still do an Elaborate_All on such units.
|
|
|
|
-- Debug flag -gnatdD restores the old behavior of 3.13, where
|
|
-- Elaborate_Body always suppressed elab warnings.
|
|
|
|
if Dynamic_Elaboration_Checks or Debug_Flag_DD then
|
|
Set_Suppress_Elaboration_Warnings (Cunit_Ent);
|
|
end if;
|
|
end if;
|
|
end Elaborate_Body;
|
|
|
|
------------------------
|
|
-- Elaboration_Checks --
|
|
------------------------
|
|
|
|
-- pragma Elaboration_Checks (Static | Dynamic);
|
|
|
|
when Pragma_Elaboration_Checks =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_One_Of (Arg1, Name_Static, Name_Dynamic);
|
|
Dynamic_Elaboration_Checks :=
|
|
(Chars (Get_Pragma_Arg (Arg1)) = Name_Dynamic);
|
|
|
|
---------------
|
|
-- Eliminate --
|
|
---------------
|
|
|
|
-- pragma Eliminate (
|
|
-- [Unit_Name =>] IDENTIFIER | SELECTED_COMPONENT,
|
|
-- [,[Entity =>] IDENTIFIER |
|
|
-- SELECTED_COMPONENT |
|
|
-- STRING_LITERAL]
|
|
-- [, OVERLOADING_RESOLUTION]);
|
|
|
|
-- OVERLOADING_RESOLUTION ::= PARAMETER_AND_RESULT_TYPE_PROFILE |
|
|
-- SOURCE_LOCATION
|
|
|
|
-- PARAMETER_AND_RESULT_TYPE_PROFILE ::= PROCEDURE_PROFILE |
|
|
-- FUNCTION_PROFILE
|
|
|
|
-- PROCEDURE_PROFILE ::= Parameter_Types => PARAMETER_TYPES
|
|
|
|
-- FUNCTION_PROFILE ::= [Parameter_Types => PARAMETER_TYPES,]
|
|
-- Result_Type => result_SUBTYPE_NAME]
|
|
|
|
-- PARAMETER_TYPES ::= (SUBTYPE_NAME {, SUBTYPE_NAME})
|
|
-- SUBTYPE_NAME ::= STRING_LITERAL
|
|
|
|
-- SOURCE_LOCATION ::= Source_Location => SOURCE_TRACE
|
|
-- SOURCE_TRACE ::= STRING_LITERAL
|
|
|
|
when Pragma_Eliminate => Eliminate : declare
|
|
Args : Args_List (1 .. 5);
|
|
Names : constant Name_List (1 .. 5) := (
|
|
Name_Unit_Name,
|
|
Name_Entity,
|
|
Name_Parameter_Types,
|
|
Name_Result_Type,
|
|
Name_Source_Location);
|
|
|
|
Unit_Name : Node_Id renames Args (1);
|
|
Entity : Node_Id renames Args (2);
|
|
Parameter_Types : Node_Id renames Args (3);
|
|
Result_Type : Node_Id renames Args (4);
|
|
Source_Location : Node_Id renames Args (5);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Valid_Configuration_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
|
|
if No (Unit_Name) then
|
|
Error_Pragma ("missing Unit_Name argument for pragma%");
|
|
end if;
|
|
|
|
if No (Entity)
|
|
and then (Present (Parameter_Types)
|
|
or else
|
|
Present (Result_Type)
|
|
or else
|
|
Present (Source_Location))
|
|
then
|
|
Error_Pragma ("missing Entity argument for pragma%");
|
|
end if;
|
|
|
|
if (Present (Parameter_Types)
|
|
or else
|
|
Present (Result_Type))
|
|
and then
|
|
Present (Source_Location)
|
|
then
|
|
Error_Pragma
|
|
("parameter profile and source location cannot " &
|
|
"be used together in pragma%");
|
|
end if;
|
|
|
|
Process_Eliminate_Pragma
|
|
(N,
|
|
Unit_Name,
|
|
Entity,
|
|
Parameter_Types,
|
|
Result_Type,
|
|
Source_Location);
|
|
end Eliminate;
|
|
|
|
------------
|
|
-- Export --
|
|
------------
|
|
|
|
-- pragma Export (
|
|
-- [ Convention =>] convention_IDENTIFIER,
|
|
-- [ Entity =>] local_NAME
|
|
-- [, [External_Name =>] static_string_EXPRESSION ]
|
|
-- [, [Link_Name =>] static_string_EXPRESSION ]);
|
|
|
|
when Pragma_Export => Export : declare
|
|
C : Convention_Id;
|
|
Def_Id : Entity_Id;
|
|
|
|
pragma Warnings (Off, C);
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_Arg_Order
|
|
((Name_Convention,
|
|
Name_Entity,
|
|
Name_External_Name,
|
|
Name_Link_Name));
|
|
Check_At_Least_N_Arguments (2);
|
|
Check_At_Most_N_Arguments (4);
|
|
Process_Convention (C, Def_Id);
|
|
|
|
if Ekind (Def_Id) /= E_Constant then
|
|
Note_Possible_Modification (Expression (Arg2), Sure => False);
|
|
end if;
|
|
|
|
Process_Interface_Name (Def_Id, Arg3, Arg4);
|
|
Set_Exported (Def_Id, Arg2);
|
|
|
|
-- If the entity is a deferred constant, propagate the information
|
|
-- to the full view, because gigi elaborates the full view only.
|
|
|
|
if Ekind (Def_Id) = E_Constant
|
|
and then Present (Full_View (Def_Id))
|
|
then
|
|
declare
|
|
Id2 : constant Entity_Id := Full_View (Def_Id);
|
|
begin
|
|
Set_Is_Exported (Id2, Is_Exported (Def_Id));
|
|
Set_First_Rep_Item (Id2, First_Rep_Item (Def_Id));
|
|
Set_Interface_Name (Id2, Einfo.Interface_Name (Def_Id));
|
|
end;
|
|
end if;
|
|
end Export;
|
|
|
|
----------------------
|
|
-- Export_Exception --
|
|
----------------------
|
|
|
|
-- pragma Export_Exception (
|
|
-- [Internal =>] LOCAL_NAME
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, [Form =>] Ada | VMS]
|
|
-- [, [Code =>] static_integer_EXPRESSION]);
|
|
|
|
when Pragma_Export_Exception => Export_Exception : declare
|
|
Args : Args_List (1 .. 4);
|
|
Names : constant Name_List (1 .. 4) := (
|
|
Name_Internal,
|
|
Name_External,
|
|
Name_Form,
|
|
Name_Code);
|
|
|
|
Internal : Node_Id renames Args (1);
|
|
External : Node_Id renames Args (2);
|
|
Form : Node_Id renames Args (3);
|
|
Code : Node_Id renames Args (4);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
|
|
if Inside_A_Generic then
|
|
Error_Pragma ("pragma% cannot be used for generic entities");
|
|
end if;
|
|
|
|
Gather_Associations (Names, Args);
|
|
Process_Extended_Import_Export_Exception_Pragma (
|
|
Arg_Internal => Internal,
|
|
Arg_External => External,
|
|
Arg_Form => Form,
|
|
Arg_Code => Code);
|
|
|
|
if not Is_VMS_Exception (Entity (Internal)) then
|
|
Set_Exported (Entity (Internal), Internal);
|
|
end if;
|
|
end Export_Exception;
|
|
|
|
---------------------
|
|
-- Export_Function --
|
|
---------------------
|
|
|
|
-- pragma Export_Function (
|
|
-- [Internal =>] LOCAL_NAME
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, [Parameter_Types =>] (PARAMETER_TYPES)]
|
|
-- [, [Result_Type =>] TYPE_DESIGNATOR]
|
|
-- [, [Mechanism =>] MECHANISM]
|
|
-- [, [Result_Mechanism =>] MECHANISM_NAME]);
|
|
|
|
-- EXTERNAL_SYMBOL ::=
|
|
-- IDENTIFIER
|
|
-- | static_string_EXPRESSION
|
|
|
|
-- PARAMETER_TYPES ::=
|
|
-- null
|
|
-- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
|
|
|
|
-- TYPE_DESIGNATOR ::=
|
|
-- subtype_NAME
|
|
-- | subtype_Name ' Access
|
|
|
|
-- MECHANISM ::=
|
|
-- MECHANISM_NAME
|
|
-- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
|
|
|
|
-- MECHANISM_ASSOCIATION ::=
|
|
-- [formal_parameter_NAME =>] MECHANISM_NAME
|
|
|
|
-- MECHANISM_NAME ::=
|
|
-- Value
|
|
-- | Reference
|
|
-- | Descriptor [([Class =>] CLASS_NAME)]
|
|
|
|
-- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
|
|
|
|
when Pragma_Export_Function => Export_Function : declare
|
|
Args : Args_List (1 .. 6);
|
|
Names : constant Name_List (1 .. 6) := (
|
|
Name_Internal,
|
|
Name_External,
|
|
Name_Parameter_Types,
|
|
Name_Result_Type,
|
|
Name_Mechanism,
|
|
Name_Result_Mechanism);
|
|
|
|
Internal : Node_Id renames Args (1);
|
|
External : Node_Id renames Args (2);
|
|
Parameter_Types : Node_Id renames Args (3);
|
|
Result_Type : Node_Id renames Args (4);
|
|
Mechanism : Node_Id renames Args (5);
|
|
Result_Mechanism : Node_Id renames Args (6);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
Process_Extended_Import_Export_Subprogram_Pragma (
|
|
Arg_Internal => Internal,
|
|
Arg_External => External,
|
|
Arg_Parameter_Types => Parameter_Types,
|
|
Arg_Result_Type => Result_Type,
|
|
Arg_Mechanism => Mechanism,
|
|
Arg_Result_Mechanism => Result_Mechanism);
|
|
end Export_Function;
|
|
|
|
-------------------
|
|
-- Export_Object --
|
|
-------------------
|
|
|
|
-- pragma Export_Object (
|
|
-- [Internal =>] LOCAL_NAME
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, [Size =>] EXTERNAL_SYMBOL]);
|
|
|
|
-- EXTERNAL_SYMBOL ::=
|
|
-- IDENTIFIER
|
|
-- | static_string_EXPRESSION
|
|
|
|
-- PARAMETER_TYPES ::=
|
|
-- null
|
|
-- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
|
|
|
|
-- TYPE_DESIGNATOR ::=
|
|
-- subtype_NAME
|
|
-- | subtype_Name ' Access
|
|
|
|
-- MECHANISM ::=
|
|
-- MECHANISM_NAME
|
|
-- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
|
|
|
|
-- MECHANISM_ASSOCIATION ::=
|
|
-- [formal_parameter_NAME =>] MECHANISM_NAME
|
|
|
|
-- MECHANISM_NAME ::=
|
|
-- Value
|
|
-- | Reference
|
|
-- | Descriptor [([Class =>] CLASS_NAME)]
|
|
|
|
-- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
|
|
|
|
when Pragma_Export_Object => Export_Object : declare
|
|
Args : Args_List (1 .. 3);
|
|
Names : constant Name_List (1 .. 3) := (
|
|
Name_Internal,
|
|
Name_External,
|
|
Name_Size);
|
|
|
|
Internal : Node_Id renames Args (1);
|
|
External : Node_Id renames Args (2);
|
|
Size : Node_Id renames Args (3);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
Process_Extended_Import_Export_Object_Pragma (
|
|
Arg_Internal => Internal,
|
|
Arg_External => External,
|
|
Arg_Size => Size);
|
|
end Export_Object;
|
|
|
|
----------------------
|
|
-- Export_Procedure --
|
|
----------------------
|
|
|
|
-- pragma Export_Procedure (
|
|
-- [Internal =>] LOCAL_NAME
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, [Parameter_Types =>] (PARAMETER_TYPES)]
|
|
-- [, [Mechanism =>] MECHANISM]);
|
|
|
|
-- EXTERNAL_SYMBOL ::=
|
|
-- IDENTIFIER
|
|
-- | static_string_EXPRESSION
|
|
|
|
-- PARAMETER_TYPES ::=
|
|
-- null
|
|
-- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
|
|
|
|
-- TYPE_DESIGNATOR ::=
|
|
-- subtype_NAME
|
|
-- | subtype_Name ' Access
|
|
|
|
-- MECHANISM ::=
|
|
-- MECHANISM_NAME
|
|
-- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
|
|
|
|
-- MECHANISM_ASSOCIATION ::=
|
|
-- [formal_parameter_NAME =>] MECHANISM_NAME
|
|
|
|
-- MECHANISM_NAME ::=
|
|
-- Value
|
|
-- | Reference
|
|
-- | Descriptor [([Class =>] CLASS_NAME)]
|
|
|
|
-- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
|
|
|
|
when Pragma_Export_Procedure => Export_Procedure : declare
|
|
Args : Args_List (1 .. 4);
|
|
Names : constant Name_List (1 .. 4) := (
|
|
Name_Internal,
|
|
Name_External,
|
|
Name_Parameter_Types,
|
|
Name_Mechanism);
|
|
|
|
Internal : Node_Id renames Args (1);
|
|
External : Node_Id renames Args (2);
|
|
Parameter_Types : Node_Id renames Args (3);
|
|
Mechanism : Node_Id renames Args (4);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
Process_Extended_Import_Export_Subprogram_Pragma (
|
|
Arg_Internal => Internal,
|
|
Arg_External => External,
|
|
Arg_Parameter_Types => Parameter_Types,
|
|
Arg_Mechanism => Mechanism);
|
|
end Export_Procedure;
|
|
|
|
------------------
|
|
-- Export_Value --
|
|
------------------
|
|
|
|
-- pragma Export_Value (
|
|
-- [Value =>] static_integer_EXPRESSION,
|
|
-- [Link_Name =>] static_string_EXPRESSION);
|
|
|
|
when Pragma_Export_Value =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Order ((Name_Value, Name_Link_Name));
|
|
Check_Arg_Count (2);
|
|
|
|
Check_Optional_Identifier (Arg1, Name_Value);
|
|
Check_Arg_Is_Static_Expression (Arg1, Any_Integer);
|
|
|
|
Check_Optional_Identifier (Arg2, Name_Link_Name);
|
|
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
|
|
|
|
-----------------------------
|
|
-- Export_Valued_Procedure --
|
|
-----------------------------
|
|
|
|
-- pragma Export_Valued_Procedure (
|
|
-- [Internal =>] LOCAL_NAME
|
|
-- [, [External =>] EXTERNAL_SYMBOL,]
|
|
-- [, [Parameter_Types =>] (PARAMETER_TYPES)]
|
|
-- [, [Mechanism =>] MECHANISM]);
|
|
|
|
-- EXTERNAL_SYMBOL ::=
|
|
-- IDENTIFIER
|
|
-- | static_string_EXPRESSION
|
|
|
|
-- PARAMETER_TYPES ::=
|
|
-- null
|
|
-- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
|
|
|
|
-- TYPE_DESIGNATOR ::=
|
|
-- subtype_NAME
|
|
-- | subtype_Name ' Access
|
|
|
|
-- MECHANISM ::=
|
|
-- MECHANISM_NAME
|
|
-- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
|
|
|
|
-- MECHANISM_ASSOCIATION ::=
|
|
-- [formal_parameter_NAME =>] MECHANISM_NAME
|
|
|
|
-- MECHANISM_NAME ::=
|
|
-- Value
|
|
-- | Reference
|
|
-- | Descriptor [([Class =>] CLASS_NAME)]
|
|
|
|
-- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
|
|
|
|
when Pragma_Export_Valued_Procedure =>
|
|
Export_Valued_Procedure : declare
|
|
Args : Args_List (1 .. 4);
|
|
Names : constant Name_List (1 .. 4) := (
|
|
Name_Internal,
|
|
Name_External,
|
|
Name_Parameter_Types,
|
|
Name_Mechanism);
|
|
|
|
Internal : Node_Id renames Args (1);
|
|
External : Node_Id renames Args (2);
|
|
Parameter_Types : Node_Id renames Args (3);
|
|
Mechanism : Node_Id renames Args (4);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
Process_Extended_Import_Export_Subprogram_Pragma (
|
|
Arg_Internal => Internal,
|
|
Arg_External => External,
|
|
Arg_Parameter_Types => Parameter_Types,
|
|
Arg_Mechanism => Mechanism);
|
|
end Export_Valued_Procedure;
|
|
|
|
-------------------
|
|
-- Extend_System --
|
|
-------------------
|
|
|
|
-- pragma Extend_System ([Name =>] Identifier);
|
|
|
|
when Pragma_Extend_System => Extend_System : declare
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Valid_Configuration_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_Name);
|
|
Check_Arg_Is_Identifier (Arg1);
|
|
|
|
Get_Name_String (Chars (Expression (Arg1)));
|
|
|
|
if Name_Len > 4
|
|
and then Name_Buffer (1 .. 4) = "aux_"
|
|
then
|
|
if Present (System_Extend_Pragma_Arg) then
|
|
if Chars (Expression (Arg1)) =
|
|
Chars (Expression (System_Extend_Pragma_Arg))
|
|
then
|
|
null;
|
|
else
|
|
Error_Msg_Sloc := Sloc (System_Extend_Pragma_Arg);
|
|
Error_Pragma ("pragma% conflicts with that #");
|
|
end if;
|
|
|
|
else
|
|
System_Extend_Pragma_Arg := Arg1;
|
|
|
|
if not GNAT_Mode then
|
|
System_Extend_Unit := Arg1;
|
|
end if;
|
|
end if;
|
|
else
|
|
Error_Pragma ("incorrect name for pragma%, must be Aux_xxx");
|
|
end if;
|
|
end Extend_System;
|
|
|
|
------------------------
|
|
-- Extensions_Allowed --
|
|
------------------------
|
|
|
|
-- pragma Extensions_Allowed (ON | OFF);
|
|
|
|
when Pragma_Extensions_Allowed =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
|
|
|
|
if Chars (Expression (Arg1)) = Name_On then
|
|
Extensions_Allowed := True;
|
|
else
|
|
Extensions_Allowed := False;
|
|
end if;
|
|
|
|
--------------
|
|
-- External --
|
|
--------------
|
|
|
|
-- pragma External (
|
|
-- [ Convention =>] convention_IDENTIFIER,
|
|
-- [ Entity =>] local_NAME
|
|
-- [, [External_Name =>] static_string_EXPRESSION ]
|
|
-- [, [Link_Name =>] static_string_EXPRESSION ]);
|
|
|
|
when Pragma_External => External : declare
|
|
Def_Id : Entity_Id;
|
|
|
|
C : Convention_Id;
|
|
pragma Warnings (Off, C);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Order
|
|
((Name_Convention,
|
|
Name_Entity,
|
|
Name_External_Name,
|
|
Name_Link_Name));
|
|
Check_At_Least_N_Arguments (2);
|
|
Check_At_Most_N_Arguments (4);
|
|
Process_Convention (C, Def_Id);
|
|
Note_Possible_Modification (Expression (Arg2), Sure => False);
|
|
Process_Interface_Name (Def_Id, Arg3, Arg4);
|
|
Set_Exported (Def_Id, Arg2);
|
|
end External;
|
|
|
|
--------------------------
|
|
-- External_Name_Casing --
|
|
--------------------------
|
|
|
|
-- pragma External_Name_Casing (
|
|
-- UPPERCASE | LOWERCASE
|
|
-- [, AS_IS | UPPERCASE | LOWERCASE]);
|
|
|
|
when Pragma_External_Name_Casing => External_Name_Casing : declare
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_No_Identifiers;
|
|
|
|
if Arg_Count = 2 then
|
|
Check_Arg_Is_One_Of
|
|
(Arg2, Name_As_Is, Name_Uppercase, Name_Lowercase);
|
|
|
|
case Chars (Get_Pragma_Arg (Arg2)) is
|
|
when Name_As_Is =>
|
|
Opt.External_Name_Exp_Casing := As_Is;
|
|
|
|
when Name_Uppercase =>
|
|
Opt.External_Name_Exp_Casing := Uppercase;
|
|
|
|
when Name_Lowercase =>
|
|
Opt.External_Name_Exp_Casing := Lowercase;
|
|
|
|
when others =>
|
|
null;
|
|
end case;
|
|
|
|
else
|
|
Check_Arg_Count (1);
|
|
end if;
|
|
|
|
Check_Arg_Is_One_Of (Arg1, Name_Uppercase, Name_Lowercase);
|
|
|
|
case Chars (Get_Pragma_Arg (Arg1)) is
|
|
when Name_Uppercase =>
|
|
Opt.External_Name_Imp_Casing := Uppercase;
|
|
|
|
when Name_Lowercase =>
|
|
Opt.External_Name_Imp_Casing := Lowercase;
|
|
|
|
when others =>
|
|
null;
|
|
end case;
|
|
end External_Name_Casing;
|
|
|
|
--------------------------
|
|
-- Favor_Top_Level --
|
|
--------------------------
|
|
|
|
-- pragma Favor_Top_Level (type_NAME);
|
|
|
|
when Pragma_Favor_Top_Level => Favor_Top_Level : declare
|
|
Named_Entity : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
Named_Entity := Entity (Expression (Arg1));
|
|
|
|
-- If it's an access-to-subprogram type (in particular, not a
|
|
-- subtype), set the flag on that type.
|
|
|
|
if Is_Access_Subprogram_Type (Named_Entity) then
|
|
Set_Can_Use_Internal_Rep (Named_Entity, False);
|
|
|
|
-- Otherwise it's an error (name denotes the wrong sort of entity)
|
|
|
|
else
|
|
Error_Pragma_Arg
|
|
("access-to-subprogram type expected", Expression (Arg1));
|
|
end if;
|
|
end Favor_Top_Level;
|
|
|
|
---------------
|
|
-- Fast_Math --
|
|
---------------
|
|
|
|
-- pragma Fast_Math;
|
|
|
|
when Pragma_Fast_Math =>
|
|
GNAT_Pragma;
|
|
Check_No_Identifiers;
|
|
Check_Valid_Configuration_Pragma;
|
|
Fast_Math := True;
|
|
|
|
---------------------------
|
|
-- Finalize_Storage_Only --
|
|
---------------------------
|
|
|
|
-- pragma Finalize_Storage_Only (first_subtype_LOCAL_NAME);
|
|
|
|
when Pragma_Finalize_Storage_Only => Finalize_Storage : declare
|
|
Assoc : constant Node_Id := Arg1;
|
|
Type_Id : constant Node_Id := Expression (Assoc);
|
|
Typ : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
|
|
Find_Type (Type_Id);
|
|
Typ := Entity (Type_Id);
|
|
|
|
if Typ = Any_Type
|
|
or else Rep_Item_Too_Early (Typ, N)
|
|
then
|
|
return;
|
|
else
|
|
Typ := Underlying_Type (Typ);
|
|
end if;
|
|
|
|
if not Is_Controlled (Typ) then
|
|
Error_Pragma ("pragma% must specify controlled type");
|
|
end if;
|
|
|
|
Check_First_Subtype (Arg1);
|
|
|
|
if Finalize_Storage_Only (Typ) then
|
|
Error_Pragma ("duplicate pragma%, only one allowed");
|
|
|
|
elsif not Rep_Item_Too_Late (Typ, N) then
|
|
Set_Finalize_Storage_Only (Base_Type (Typ), True);
|
|
end if;
|
|
end Finalize_Storage;
|
|
|
|
--------------------------
|
|
-- Float_Representation --
|
|
--------------------------
|
|
|
|
-- pragma Float_Representation (FLOAT_REP[, float_type_LOCAL_NAME]);
|
|
|
|
-- FLOAT_REP ::= VAX_Float | IEEE_Float
|
|
|
|
when Pragma_Float_Representation => Float_Representation : declare
|
|
Argx : Node_Id;
|
|
Digs : Nat;
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
|
|
if Arg_Count = 1 then
|
|
Check_Valid_Configuration_Pragma;
|
|
else
|
|
Check_Arg_Count (2);
|
|
Check_Optional_Identifier (Arg2, Name_Entity);
|
|
Check_Arg_Is_Local_Name (Arg2);
|
|
end if;
|
|
|
|
Check_No_Identifier (Arg1);
|
|
Check_Arg_Is_One_Of (Arg1, Name_VAX_Float, Name_IEEE_Float);
|
|
|
|
if not OpenVMS_On_Target then
|
|
if Chars (Expression (Arg1)) = Name_VAX_Float then
|
|
Error_Pragma
|
|
("?pragma% ignored (applies only to Open'V'M'S)");
|
|
end if;
|
|
|
|
return;
|
|
end if;
|
|
|
|
-- One argument case
|
|
|
|
if Arg_Count = 1 then
|
|
if Chars (Expression (Arg1)) = Name_VAX_Float then
|
|
if Opt.Float_Format = 'I' then
|
|
Error_Pragma ("'I'E'E'E format previously specified");
|
|
end if;
|
|
|
|
Opt.Float_Format := 'V';
|
|
|
|
else
|
|
if Opt.Float_Format = 'V' then
|
|
Error_Pragma ("'V'A'X format previously specified");
|
|
end if;
|
|
|
|
Opt.Float_Format := 'I';
|
|
end if;
|
|
|
|
Set_Standard_Fpt_Formats;
|
|
|
|
-- Two argument case
|
|
|
|
else
|
|
Argx := Get_Pragma_Arg (Arg2);
|
|
|
|
if not Is_Entity_Name (Argx)
|
|
or else not Is_Floating_Point_Type (Entity (Argx))
|
|
then
|
|
Error_Pragma_Arg
|
|
("second argument of% pragma must be floating-point type",
|
|
Arg2);
|
|
end if;
|
|
|
|
Ent := Entity (Argx);
|
|
Digs := UI_To_Int (Digits_Value (Ent));
|
|
|
|
-- Two arguments, VAX_Float case
|
|
|
|
if Chars (Expression (Arg1)) = Name_VAX_Float then
|
|
case Digs is
|
|
when 6 => Set_F_Float (Ent);
|
|
when 9 => Set_D_Float (Ent);
|
|
when 15 => Set_G_Float (Ent);
|
|
|
|
when others =>
|
|
Error_Pragma_Arg
|
|
("wrong digits value, must be 6,9 or 15", Arg2);
|
|
end case;
|
|
|
|
-- Two arguments, IEEE_Float case
|
|
|
|
else
|
|
case Digs is
|
|
when 6 => Set_IEEE_Short (Ent);
|
|
when 15 => Set_IEEE_Long (Ent);
|
|
|
|
when others =>
|
|
Error_Pragma_Arg
|
|
("wrong digits value, must be 6 or 15", Arg2);
|
|
end case;
|
|
end if;
|
|
end if;
|
|
end Float_Representation;
|
|
|
|
-----------
|
|
-- Ident --
|
|
-----------
|
|
|
|
-- pragma Ident (static_string_EXPRESSION)
|
|
|
|
-- Note: pragma Comment shares this processing. Pragma Comment is
|
|
-- identical to Ident, except that the restriction of the argument to
|
|
-- 31 characters and the placement restrictions are not enforced for
|
|
-- pragma Comment.
|
|
|
|
when Pragma_Ident | Pragma_Comment => Ident : declare
|
|
Str : Node_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_Static_Expression (Arg1, Standard_String);
|
|
|
|
-- For pragma Ident, preserve DEC compatibility by requiring the
|
|
-- pragma to appear in a declarative part or package spec.
|
|
|
|
if Prag_Id = Pragma_Ident then
|
|
Check_Is_In_Decl_Part_Or_Package_Spec;
|
|
end if;
|
|
|
|
Str := Expr_Value_S (Expression (Arg1));
|
|
|
|
declare
|
|
CS : Node_Id;
|
|
GP : Node_Id;
|
|
|
|
begin
|
|
GP := Parent (Parent (N));
|
|
|
|
if Nkind_In (GP, N_Package_Declaration,
|
|
N_Generic_Package_Declaration)
|
|
then
|
|
GP := Parent (GP);
|
|
end if;
|
|
|
|
-- If we have a compilation unit, then record the ident value,
|
|
-- checking for improper duplication.
|
|
|
|
if Nkind (GP) = N_Compilation_Unit then
|
|
CS := Ident_String (Current_Sem_Unit);
|
|
|
|
if Present (CS) then
|
|
|
|
-- For Ident, we do not permit multiple instances
|
|
|
|
if Prag_Id = Pragma_Ident then
|
|
Error_Pragma ("duplicate% pragma not permitted");
|
|
|
|
-- For Comment, we concatenate the string, unless we want
|
|
-- to preserve the tree structure for ASIS.
|
|
|
|
elsif not ASIS_Mode then
|
|
Start_String (Strval (CS));
|
|
Store_String_Char (' ');
|
|
Store_String_Chars (Strval (Str));
|
|
Set_Strval (CS, End_String);
|
|
end if;
|
|
|
|
else
|
|
-- In VMS, the effect of IDENT is achieved by passing
|
|
-- IDENTIFICATION=name as a --for-linker switch.
|
|
|
|
if OpenVMS_On_Target then
|
|
Start_String;
|
|
Store_String_Chars
|
|
("--for-linker=IDENTIFICATION=");
|
|
String_To_Name_Buffer (Strval (Str));
|
|
Store_String_Chars (Name_Buffer (1 .. Name_Len));
|
|
|
|
-- Only the last processed IDENT is saved. The main
|
|
-- purpose is so an IDENT associated with a main
|
|
-- procedure will be used in preference to an IDENT
|
|
-- associated with a with'd package.
|
|
|
|
Replace_Linker_Option_String
|
|
(End_String, "--for-linker=IDENTIFICATION=");
|
|
end if;
|
|
|
|
Set_Ident_String (Current_Sem_Unit, Str);
|
|
end if;
|
|
|
|
-- For subunits, we just ignore the Ident, since in GNAT these
|
|
-- are not separate object files, and hence not separate units
|
|
-- in the unit table.
|
|
|
|
elsif Nkind (GP) = N_Subunit then
|
|
null;
|
|
|
|
-- Otherwise we have a misplaced pragma Ident, but we ignore
|
|
-- this if we are in an instantiation, since it comes from
|
|
-- a generic, and has no relevance to the instantiation.
|
|
|
|
elsif Prag_Id = Pragma_Ident then
|
|
if Instantiation_Location (Loc) = No_Location then
|
|
Error_Pragma ("pragma% only allowed at outer level");
|
|
end if;
|
|
end if;
|
|
end;
|
|
end Ident;
|
|
|
|
--------------------------
|
|
-- Implemented_By_Entry --
|
|
--------------------------
|
|
|
|
-- pragma Implemented_By_Entry (DIRECT_NAME);
|
|
|
|
when Pragma_Implemented_By_Entry => Implemented_By_Entry : declare
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
Ada_2005_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_Identifier (Arg1);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
Ent := Entity (Expression (Arg1));
|
|
|
|
-- Pragma Implemented_By_Entry must be applied only to protected
|
|
-- synchronized or task interface primitives.
|
|
|
|
if (Ekind (Ent) /= E_Function
|
|
and then Ekind (Ent) /= E_Procedure)
|
|
or else not Present (First_Formal (Ent))
|
|
or else not Is_Concurrent_Interface (Etype (First_Formal (Ent)))
|
|
then
|
|
Error_Pragma_Arg
|
|
("pragma % must be applied to a concurrent interface " &
|
|
"primitive", Arg1);
|
|
|
|
else
|
|
if Einfo.Implemented_By_Entry (Ent)
|
|
and then Warn_On_Redundant_Constructs
|
|
then
|
|
Error_Pragma ("?duplicate pragma%!");
|
|
else
|
|
Set_Implemented_By_Entry (Ent);
|
|
end if;
|
|
end if;
|
|
end Implemented_By_Entry;
|
|
|
|
-----------------------
|
|
-- Implicit_Packing --
|
|
-----------------------
|
|
|
|
-- pragma Implicit_Packing;
|
|
|
|
when Pragma_Implicit_Packing =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
Implicit_Packing := True;
|
|
|
|
------------
|
|
-- Import --
|
|
------------
|
|
|
|
-- pragma Import (
|
|
-- [Convention =>] convention_IDENTIFIER,
|
|
-- [Entity =>] local_NAME
|
|
-- [, [External_Name =>] static_string_EXPRESSION ]
|
|
-- [, [Link_Name =>] static_string_EXPRESSION ]);
|
|
|
|
when Pragma_Import =>
|
|
Check_Ada_83_Warning;
|
|
Check_Arg_Order
|
|
((Name_Convention,
|
|
Name_Entity,
|
|
Name_External_Name,
|
|
Name_Link_Name));
|
|
Check_At_Least_N_Arguments (2);
|
|
Check_At_Most_N_Arguments (4);
|
|
Process_Import_Or_Interface;
|
|
|
|
----------------------
|
|
-- Import_Exception --
|
|
----------------------
|
|
|
|
-- pragma Import_Exception (
|
|
-- [Internal =>] LOCAL_NAME
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, [Form =>] Ada | VMS]
|
|
-- [, [Code =>] static_integer_EXPRESSION]);
|
|
|
|
when Pragma_Import_Exception => Import_Exception : declare
|
|
Args : Args_List (1 .. 4);
|
|
Names : constant Name_List (1 .. 4) := (
|
|
Name_Internal,
|
|
Name_External,
|
|
Name_Form,
|
|
Name_Code);
|
|
|
|
Internal : Node_Id renames Args (1);
|
|
External : Node_Id renames Args (2);
|
|
Form : Node_Id renames Args (3);
|
|
Code : Node_Id renames Args (4);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
|
|
if Present (External) and then Present (Code) then
|
|
Error_Pragma
|
|
("cannot give both External and Code options for pragma%");
|
|
end if;
|
|
|
|
Process_Extended_Import_Export_Exception_Pragma (
|
|
Arg_Internal => Internal,
|
|
Arg_External => External,
|
|
Arg_Form => Form,
|
|
Arg_Code => Code);
|
|
|
|
if not Is_VMS_Exception (Entity (Internal)) then
|
|
Set_Imported (Entity (Internal));
|
|
end if;
|
|
end Import_Exception;
|
|
|
|
---------------------
|
|
-- Import_Function --
|
|
---------------------
|
|
|
|
-- pragma Import_Function (
|
|
-- [Internal =>] LOCAL_NAME,
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, [Parameter_Types =>] (PARAMETER_TYPES)]
|
|
-- [, [Result_Type =>] SUBTYPE_MARK]
|
|
-- [, [Mechanism =>] MECHANISM]
|
|
-- [, [Result_Mechanism =>] MECHANISM_NAME]
|
|
-- [, [First_Optional_Parameter =>] IDENTIFIER]);
|
|
|
|
-- EXTERNAL_SYMBOL ::=
|
|
-- IDENTIFIER
|
|
-- | static_string_EXPRESSION
|
|
|
|
-- PARAMETER_TYPES ::=
|
|
-- null
|
|
-- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
|
|
|
|
-- TYPE_DESIGNATOR ::=
|
|
-- subtype_NAME
|
|
-- | subtype_Name ' Access
|
|
|
|
-- MECHANISM ::=
|
|
-- MECHANISM_NAME
|
|
-- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
|
|
|
|
-- MECHANISM_ASSOCIATION ::=
|
|
-- [formal_parameter_NAME =>] MECHANISM_NAME
|
|
|
|
-- MECHANISM_NAME ::=
|
|
-- Value
|
|
-- | Reference
|
|
-- | Descriptor [([Class =>] CLASS_NAME)]
|
|
|
|
-- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
|
|
|
|
when Pragma_Import_Function => Import_Function : declare
|
|
Args : Args_List (1 .. 7);
|
|
Names : constant Name_List (1 .. 7) := (
|
|
Name_Internal,
|
|
Name_External,
|
|
Name_Parameter_Types,
|
|
Name_Result_Type,
|
|
Name_Mechanism,
|
|
Name_Result_Mechanism,
|
|
Name_First_Optional_Parameter);
|
|
|
|
Internal : Node_Id renames Args (1);
|
|
External : Node_Id renames Args (2);
|
|
Parameter_Types : Node_Id renames Args (3);
|
|
Result_Type : Node_Id renames Args (4);
|
|
Mechanism : Node_Id renames Args (5);
|
|
Result_Mechanism : Node_Id renames Args (6);
|
|
First_Optional_Parameter : Node_Id renames Args (7);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
Process_Extended_Import_Export_Subprogram_Pragma (
|
|
Arg_Internal => Internal,
|
|
Arg_External => External,
|
|
Arg_Parameter_Types => Parameter_Types,
|
|
Arg_Result_Type => Result_Type,
|
|
Arg_Mechanism => Mechanism,
|
|
Arg_Result_Mechanism => Result_Mechanism,
|
|
Arg_First_Optional_Parameter => First_Optional_Parameter);
|
|
end Import_Function;
|
|
|
|
-------------------
|
|
-- Import_Object --
|
|
-------------------
|
|
|
|
-- pragma Import_Object (
|
|
-- [Internal =>] LOCAL_NAME
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, [Size =>] EXTERNAL_SYMBOL]);
|
|
|
|
-- EXTERNAL_SYMBOL ::=
|
|
-- IDENTIFIER
|
|
-- | static_string_EXPRESSION
|
|
|
|
when Pragma_Import_Object => Import_Object : declare
|
|
Args : Args_List (1 .. 3);
|
|
Names : constant Name_List (1 .. 3) := (
|
|
Name_Internal,
|
|
Name_External,
|
|
Name_Size);
|
|
|
|
Internal : Node_Id renames Args (1);
|
|
External : Node_Id renames Args (2);
|
|
Size : Node_Id renames Args (3);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
Process_Extended_Import_Export_Object_Pragma (
|
|
Arg_Internal => Internal,
|
|
Arg_External => External,
|
|
Arg_Size => Size);
|
|
end Import_Object;
|
|
|
|
----------------------
|
|
-- Import_Procedure --
|
|
----------------------
|
|
|
|
-- pragma Import_Procedure (
|
|
-- [Internal =>] LOCAL_NAME
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, [Parameter_Types =>] (PARAMETER_TYPES)]
|
|
-- [, [Mechanism =>] MECHANISM]
|
|
-- [, [First_Optional_Parameter =>] IDENTIFIER]);
|
|
|
|
-- EXTERNAL_SYMBOL ::=
|
|
-- IDENTIFIER
|
|
-- | static_string_EXPRESSION
|
|
|
|
-- PARAMETER_TYPES ::=
|
|
-- null
|
|
-- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
|
|
|
|
-- TYPE_DESIGNATOR ::=
|
|
-- subtype_NAME
|
|
-- | subtype_Name ' Access
|
|
|
|
-- MECHANISM ::=
|
|
-- MECHANISM_NAME
|
|
-- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
|
|
|
|
-- MECHANISM_ASSOCIATION ::=
|
|
-- [formal_parameter_NAME =>] MECHANISM_NAME
|
|
|
|
-- MECHANISM_NAME ::=
|
|
-- Value
|
|
-- | Reference
|
|
-- | Descriptor [([Class =>] CLASS_NAME)]
|
|
|
|
-- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
|
|
|
|
when Pragma_Import_Procedure => Import_Procedure : declare
|
|
Args : Args_List (1 .. 5);
|
|
Names : constant Name_List (1 .. 5) := (
|
|
Name_Internal,
|
|
Name_External,
|
|
Name_Parameter_Types,
|
|
Name_Mechanism,
|
|
Name_First_Optional_Parameter);
|
|
|
|
Internal : Node_Id renames Args (1);
|
|
External : Node_Id renames Args (2);
|
|
Parameter_Types : Node_Id renames Args (3);
|
|
Mechanism : Node_Id renames Args (4);
|
|
First_Optional_Parameter : Node_Id renames Args (5);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
Process_Extended_Import_Export_Subprogram_Pragma (
|
|
Arg_Internal => Internal,
|
|
Arg_External => External,
|
|
Arg_Parameter_Types => Parameter_Types,
|
|
Arg_Mechanism => Mechanism,
|
|
Arg_First_Optional_Parameter => First_Optional_Parameter);
|
|
end Import_Procedure;
|
|
|
|
-----------------------------
|
|
-- Import_Valued_Procedure --
|
|
-----------------------------
|
|
|
|
-- pragma Import_Valued_Procedure (
|
|
-- [Internal =>] LOCAL_NAME
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, [Parameter_Types =>] (PARAMETER_TYPES)]
|
|
-- [, [Mechanism =>] MECHANISM]
|
|
-- [, [First_Optional_Parameter =>] IDENTIFIER]);
|
|
|
|
-- EXTERNAL_SYMBOL ::=
|
|
-- IDENTIFIER
|
|
-- | static_string_EXPRESSION
|
|
|
|
-- PARAMETER_TYPES ::=
|
|
-- null
|
|
-- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
|
|
|
|
-- TYPE_DESIGNATOR ::=
|
|
-- subtype_NAME
|
|
-- | subtype_Name ' Access
|
|
|
|
-- MECHANISM ::=
|
|
-- MECHANISM_NAME
|
|
-- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
|
|
|
|
-- MECHANISM_ASSOCIATION ::=
|
|
-- [formal_parameter_NAME =>] MECHANISM_NAME
|
|
|
|
-- MECHANISM_NAME ::=
|
|
-- Value
|
|
-- | Reference
|
|
-- | Descriptor [([Class =>] CLASS_NAME)]
|
|
|
|
-- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
|
|
|
|
when Pragma_Import_Valued_Procedure =>
|
|
Import_Valued_Procedure : declare
|
|
Args : Args_List (1 .. 5);
|
|
Names : constant Name_List (1 .. 5) := (
|
|
Name_Internal,
|
|
Name_External,
|
|
Name_Parameter_Types,
|
|
Name_Mechanism,
|
|
Name_First_Optional_Parameter);
|
|
|
|
Internal : Node_Id renames Args (1);
|
|
External : Node_Id renames Args (2);
|
|
Parameter_Types : Node_Id renames Args (3);
|
|
Mechanism : Node_Id renames Args (4);
|
|
First_Optional_Parameter : Node_Id renames Args (5);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
Process_Extended_Import_Export_Subprogram_Pragma (
|
|
Arg_Internal => Internal,
|
|
Arg_External => External,
|
|
Arg_Parameter_Types => Parameter_Types,
|
|
Arg_Mechanism => Mechanism,
|
|
Arg_First_Optional_Parameter => First_Optional_Parameter);
|
|
end Import_Valued_Procedure;
|
|
|
|
------------------------
|
|
-- Initialize_Scalars --
|
|
------------------------
|
|
|
|
-- pragma Initialize_Scalars;
|
|
|
|
when Pragma_Initialize_Scalars =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
Check_Valid_Configuration_Pragma;
|
|
Check_Restriction (No_Initialize_Scalars, N);
|
|
|
|
-- Initialize_Scalars creates false positives in CodePeer,
|
|
-- so ignore this pragma in this mode.
|
|
|
|
if not Restriction_Active (No_Initialize_Scalars)
|
|
and then not CodePeer_Mode
|
|
then
|
|
Init_Or_Norm_Scalars := True;
|
|
Initialize_Scalars := True;
|
|
end if;
|
|
|
|
------------
|
|
-- Inline --
|
|
------------
|
|
|
|
-- pragma Inline ( NAME {, NAME} );
|
|
|
|
when Pragma_Inline =>
|
|
|
|
-- Pragma is active if inlining option is active
|
|
|
|
Process_Inline (Inline_Active);
|
|
|
|
-------------------
|
|
-- Inline_Always --
|
|
-------------------
|
|
|
|
-- pragma Inline_Always ( NAME {, NAME} );
|
|
|
|
when Pragma_Inline_Always =>
|
|
GNAT_Pragma;
|
|
Process_Inline (True);
|
|
|
|
--------------------
|
|
-- Inline_Generic --
|
|
--------------------
|
|
|
|
-- pragma Inline_Generic (NAME {, NAME});
|
|
|
|
when Pragma_Inline_Generic =>
|
|
GNAT_Pragma;
|
|
Process_Generic_List;
|
|
|
|
----------------------
|
|
-- Inspection_Point --
|
|
----------------------
|
|
|
|
-- pragma Inspection_Point [(object_NAME {, object_NAME})];
|
|
|
|
when Pragma_Inspection_Point => Inspection_Point : declare
|
|
Arg : Node_Id;
|
|
Exp : Node_Id;
|
|
|
|
begin
|
|
if Arg_Count > 0 then
|
|
Arg := Arg1;
|
|
loop
|
|
Exp := Expression (Arg);
|
|
Analyze (Exp);
|
|
|
|
if not Is_Entity_Name (Exp)
|
|
or else not Is_Object (Entity (Exp))
|
|
then
|
|
Error_Pragma_Arg ("object name required", Arg);
|
|
end if;
|
|
|
|
Next (Arg);
|
|
exit when No (Arg);
|
|
end loop;
|
|
end if;
|
|
end Inspection_Point;
|
|
|
|
---------------
|
|
-- Interface --
|
|
---------------
|
|
|
|
-- pragma Interface (
|
|
-- [ Convention =>] convention_IDENTIFIER,
|
|
-- [ Entity =>] local_NAME
|
|
-- [, [External_Name =>] static_string_EXPRESSION ]
|
|
-- [, [Link_Name =>] static_string_EXPRESSION ]);
|
|
|
|
when Pragma_Interface =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Order
|
|
((Name_Convention,
|
|
Name_Entity,
|
|
Name_External_Name,
|
|
Name_Link_Name));
|
|
Check_At_Least_N_Arguments (2);
|
|
Check_At_Most_N_Arguments (4);
|
|
Process_Import_Or_Interface;
|
|
|
|
--------------------
|
|
-- Interface_Name --
|
|
--------------------
|
|
|
|
-- pragma Interface_Name (
|
|
-- [ Entity =>] local_NAME
|
|
-- [,[External_Name =>] static_string_EXPRESSION ]
|
|
-- [,[Link_Name =>] static_string_EXPRESSION ]);
|
|
|
|
when Pragma_Interface_Name => Interface_Name : declare
|
|
Id : Node_Id;
|
|
Def_Id : Entity_Id;
|
|
Hom_Id : Entity_Id;
|
|
Found : Boolean;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Order
|
|
((Name_Entity, Name_External_Name, Name_Link_Name));
|
|
Check_At_Least_N_Arguments (2);
|
|
Check_At_Most_N_Arguments (3);
|
|
Id := Expression (Arg1);
|
|
Analyze (Id);
|
|
|
|
if not Is_Entity_Name (Id) then
|
|
Error_Pragma_Arg
|
|
("first argument for pragma% must be entity name", Arg1);
|
|
elsif Etype (Id) = Any_Type then
|
|
return;
|
|
else
|
|
Def_Id := Entity (Id);
|
|
end if;
|
|
|
|
-- Special DEC-compatible processing for the object case, forces
|
|
-- object to be imported.
|
|
|
|
if Ekind (Def_Id) = E_Variable then
|
|
Kill_Size_Check_Code (Def_Id);
|
|
Note_Possible_Modification (Id, Sure => False);
|
|
|
|
-- Initialization is not allowed for imported variable
|
|
|
|
if Present (Expression (Parent (Def_Id)))
|
|
and then Comes_From_Source (Expression (Parent (Def_Id)))
|
|
then
|
|
Error_Msg_Sloc := Sloc (Def_Id);
|
|
Error_Pragma_Arg
|
|
("no initialization allowed for declaration of& #",
|
|
Arg2);
|
|
|
|
else
|
|
-- For compatibility, support VADS usage of providing both
|
|
-- pragmas Interface and Interface_Name to obtain the effect
|
|
-- of a single Import pragma.
|
|
|
|
if Is_Imported (Def_Id)
|
|
and then Present (First_Rep_Item (Def_Id))
|
|
and then Nkind (First_Rep_Item (Def_Id)) = N_Pragma
|
|
and then
|
|
Pragma_Name (First_Rep_Item (Def_Id)) = Name_Interface
|
|
then
|
|
null;
|
|
else
|
|
Set_Imported (Def_Id);
|
|
end if;
|
|
|
|
Set_Is_Public (Def_Id);
|
|
Process_Interface_Name (Def_Id, Arg2, Arg3);
|
|
end if;
|
|
|
|
-- Otherwise must be subprogram
|
|
|
|
elsif not Is_Subprogram (Def_Id) then
|
|
Error_Pragma_Arg
|
|
("argument of pragma% is not subprogram", Arg1);
|
|
|
|
else
|
|
Check_At_Most_N_Arguments (3);
|
|
Hom_Id := Def_Id;
|
|
Found := False;
|
|
|
|
-- Loop through homonyms
|
|
|
|
loop
|
|
Def_Id := Get_Base_Subprogram (Hom_Id);
|
|
|
|
if Is_Imported (Def_Id) then
|
|
Process_Interface_Name (Def_Id, Arg2, Arg3);
|
|
Found := True;
|
|
end if;
|
|
|
|
Hom_Id := Homonym (Hom_Id);
|
|
|
|
exit when No (Hom_Id)
|
|
or else Scope (Hom_Id) /= Current_Scope;
|
|
end loop;
|
|
|
|
if not Found then
|
|
Error_Pragma_Arg
|
|
("argument of pragma% is not imported subprogram",
|
|
Arg1);
|
|
end if;
|
|
end if;
|
|
end Interface_Name;
|
|
|
|
-----------------------
|
|
-- Interrupt_Handler --
|
|
-----------------------
|
|
|
|
-- pragma Interrupt_Handler (handler_NAME);
|
|
|
|
when Pragma_Interrupt_Handler =>
|
|
Check_Ada_83_Warning;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
|
|
if No_Run_Time_Mode then
|
|
Error_Msg_CRT ("Interrupt_Handler pragma", N);
|
|
else
|
|
Check_Interrupt_Or_Attach_Handler;
|
|
Process_Interrupt_Or_Attach_Handler;
|
|
end if;
|
|
|
|
------------------------
|
|
-- Interrupt_Priority --
|
|
------------------------
|
|
|
|
-- pragma Interrupt_Priority [(EXPRESSION)];
|
|
|
|
when Pragma_Interrupt_Priority => Interrupt_Priority : declare
|
|
P : constant Node_Id := Parent (N);
|
|
Arg : Node_Id;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
|
|
if Arg_Count /= 0 then
|
|
Arg := Expression (Arg1);
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
|
|
-- The expression must be analyzed in the special manner
|
|
-- described in "Handling of Default and Per-Object
|
|
-- Expressions" in sem.ads.
|
|
|
|
Preanalyze_Spec_Expression (Arg, RTE (RE_Interrupt_Priority));
|
|
end if;
|
|
|
|
if not Nkind_In (P, N_Task_Definition, N_Protected_Definition) then
|
|
Pragma_Misplaced;
|
|
return;
|
|
|
|
elsif Has_Priority_Pragma (P) then
|
|
Error_Pragma ("duplicate pragma% not allowed");
|
|
|
|
else
|
|
Set_Has_Priority_Pragma (P, True);
|
|
Record_Rep_Item (Defining_Identifier (Parent (P)), N);
|
|
end if;
|
|
end Interrupt_Priority;
|
|
|
|
---------------------
|
|
-- Interrupt_State --
|
|
---------------------
|
|
|
|
-- pragma Interrupt_State (
|
|
-- [Name =>] INTERRUPT_ID,
|
|
-- [State =>] INTERRUPT_STATE);
|
|
|
|
-- INTERRUPT_ID => IDENTIFIER | static_integer_EXPRESSION
|
|
-- INTERRUPT_STATE => System | Runtime | User
|
|
|
|
-- Note: if the interrupt id is given as an identifier, then it must
|
|
-- be one of the identifiers in Ada.Interrupts.Names. Otherwise it is
|
|
-- given as a static integer expression which must be in the range of
|
|
-- Ada.Interrupts.Interrupt_ID.
|
|
|
|
when Pragma_Interrupt_State => Interrupt_State : declare
|
|
|
|
Int_Id : constant Entity_Id := RTE (RE_Interrupt_ID);
|
|
-- This is the entity Ada.Interrupts.Interrupt_ID;
|
|
|
|
State_Type : Character;
|
|
-- Set to 's'/'r'/'u' for System/Runtime/User
|
|
|
|
IST_Num : Pos;
|
|
-- Index to entry in Interrupt_States table
|
|
|
|
Int_Val : Uint;
|
|
-- Value of interrupt
|
|
|
|
Arg1X : constant Node_Id := Get_Pragma_Arg (Arg1);
|
|
-- The first argument to the pragma
|
|
|
|
Int_Ent : Entity_Id;
|
|
-- Interrupt entity in Ada.Interrupts.Names
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Order ((Name_Name, Name_State));
|
|
Check_Arg_Count (2);
|
|
|
|
Check_Optional_Identifier (Arg1, Name_Name);
|
|
Check_Optional_Identifier (Arg2, Name_State);
|
|
Check_Arg_Is_Identifier (Arg2);
|
|
|
|
-- First argument is identifier
|
|
|
|
if Nkind (Arg1X) = N_Identifier then
|
|
|
|
-- Search list of names in Ada.Interrupts.Names
|
|
|
|
Int_Ent := First_Entity (RTE (RE_Names));
|
|
loop
|
|
if No (Int_Ent) then
|
|
Error_Pragma_Arg ("invalid interrupt name", Arg1);
|
|
|
|
elsif Chars (Int_Ent) = Chars (Arg1X) then
|
|
Int_Val := Expr_Value (Constant_Value (Int_Ent));
|
|
exit;
|
|
end if;
|
|
|
|
Next_Entity (Int_Ent);
|
|
end loop;
|
|
|
|
-- First argument is not an identifier, so it must be a static
|
|
-- expression of type Ada.Interrupts.Interrupt_ID.
|
|
|
|
else
|
|
Check_Arg_Is_Static_Expression (Arg1, Any_Integer);
|
|
Int_Val := Expr_Value (Arg1X);
|
|
|
|
if Int_Val < Expr_Value (Type_Low_Bound (Int_Id))
|
|
or else
|
|
Int_Val > Expr_Value (Type_High_Bound (Int_Id))
|
|
then
|
|
Error_Pragma_Arg
|
|
("value not in range of type " &
|
|
"""Ada.Interrupts.Interrupt_'I'D""", Arg1);
|
|
end if;
|
|
end if;
|
|
|
|
-- Check OK state
|
|
|
|
case Chars (Get_Pragma_Arg (Arg2)) is
|
|
when Name_Runtime => State_Type := 'r';
|
|
when Name_System => State_Type := 's';
|
|
when Name_User => State_Type := 'u';
|
|
|
|
when others =>
|
|
Error_Pragma_Arg ("invalid interrupt state", Arg2);
|
|
end case;
|
|
|
|
-- Check if entry is already stored
|
|
|
|
IST_Num := Interrupt_States.First;
|
|
loop
|
|
-- If entry not found, add it
|
|
|
|
if IST_Num > Interrupt_States.Last then
|
|
Interrupt_States.Append
|
|
((Interrupt_Number => UI_To_Int (Int_Val),
|
|
Interrupt_State => State_Type,
|
|
Pragma_Loc => Loc));
|
|
exit;
|
|
|
|
-- Case of entry for the same entry
|
|
|
|
elsif Int_Val = Interrupt_States.Table (IST_Num).
|
|
Interrupt_Number
|
|
then
|
|
-- If state matches, done, no need to make redundant entry
|
|
|
|
exit when
|
|
State_Type = Interrupt_States.Table (IST_Num).
|
|
Interrupt_State;
|
|
|
|
-- Otherwise if state does not match, error
|
|
|
|
Error_Msg_Sloc :=
|
|
Interrupt_States.Table (IST_Num).Pragma_Loc;
|
|
Error_Pragma_Arg
|
|
("state conflicts with that given #", Arg2);
|
|
exit;
|
|
end if;
|
|
|
|
IST_Num := IST_Num + 1;
|
|
end loop;
|
|
end Interrupt_State;
|
|
|
|
----------------------
|
|
-- Java_Constructor --
|
|
----------------------
|
|
|
|
-- pragma Java_Constructor ([Entity =>] LOCAL_NAME);
|
|
|
|
-- Also handles pragma CIL_Constructor
|
|
|
|
when Pragma_CIL_Constructor | Pragma_Java_Constructor =>
|
|
Java_Constructor : declare
|
|
Id : Entity_Id;
|
|
Def_Id : Entity_Id;
|
|
Hom_Id : Entity_Id;
|
|
Convention : Convention_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
|
|
Id := Expression (Arg1);
|
|
Find_Program_Unit_Name (Id);
|
|
|
|
-- If we did not find the name, we are done
|
|
|
|
if Etype (Id) = Any_Type then
|
|
return;
|
|
end if;
|
|
|
|
case Prag_Id is
|
|
when Pragma_CIL_Constructor => Convention := Convention_CIL;
|
|
when Pragma_Java_Constructor => Convention := Convention_Java;
|
|
when others => null;
|
|
end case;
|
|
|
|
Hom_Id := Entity (Id);
|
|
|
|
-- Loop through homonyms
|
|
|
|
loop
|
|
Def_Id := Get_Base_Subprogram (Hom_Id);
|
|
|
|
-- The constructor is required to be a function returning an
|
|
-- access type whose designated type has convention Java/CIL.
|
|
|
|
if Ekind (Def_Id) = E_Function
|
|
and then
|
|
(Is_Value_Type (Etype (Def_Id))
|
|
or else
|
|
(Ekind (Etype (Def_Id)) = E_Access_Subprogram_Type
|
|
and then
|
|
Atree.Convention (Etype (Def_Id)) = Convention)
|
|
or else
|
|
(Ekind (Etype (Def_Id)) in Access_Kind
|
|
and then
|
|
(Atree.Convention
|
|
(Designated_Type (Etype (Def_Id))) = Convention
|
|
or else
|
|
Atree.Convention
|
|
(Root_Type (Designated_Type (Etype (Def_Id)))) =
|
|
Convention)))
|
|
then
|
|
Set_Is_Constructor (Def_Id);
|
|
Set_Convention (Def_Id, Convention);
|
|
Set_Is_Imported (Def_Id);
|
|
|
|
else
|
|
if Convention = Convention_Java then
|
|
Error_Pragma_Arg
|
|
("pragma% requires function returning a " &
|
|
"'Java access type", Arg1);
|
|
else
|
|
pragma Assert (Convention = Convention_CIL);
|
|
Error_Pragma_Arg
|
|
("pragma% requires function returning a " &
|
|
"'C'I'L access type", Arg1);
|
|
end if;
|
|
end if;
|
|
|
|
Hom_Id := Homonym (Hom_Id);
|
|
|
|
exit when No (Hom_Id) or else Scope (Hom_Id) /= Current_Scope;
|
|
end loop;
|
|
end Java_Constructor;
|
|
|
|
----------------------
|
|
-- Java_Interface --
|
|
----------------------
|
|
|
|
-- pragma Java_Interface ([Entity =>] LOCAL_NAME);
|
|
|
|
when Pragma_Java_Interface => Java_Interface : declare
|
|
Arg : Node_Id;
|
|
Typ : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
|
|
Arg := Expression (Arg1);
|
|
Analyze (Arg);
|
|
|
|
if Etype (Arg) = Any_Type then
|
|
return;
|
|
end if;
|
|
|
|
if not Is_Entity_Name (Arg)
|
|
or else not Is_Type (Entity (Arg))
|
|
then
|
|
Error_Pragma_Arg ("pragma% requires a type mark", Arg1);
|
|
end if;
|
|
|
|
Typ := Underlying_Type (Entity (Arg));
|
|
|
|
-- For now simply check some of the semantic constraints on the
|
|
-- type. This currently leaves out some restrictions on interface
|
|
-- types, namely that the parent type must be java.lang.Object.Typ
|
|
-- and that all primitives of the type should be declared
|
|
-- abstract. ???
|
|
|
|
if not Is_Tagged_Type (Typ) or else not Is_Abstract_Type (Typ) then
|
|
Error_Pragma_Arg ("pragma% requires an abstract "
|
|
& "tagged type", Arg1);
|
|
|
|
elsif not Has_Discriminants (Typ)
|
|
or else Ekind (Etype (First_Discriminant (Typ)))
|
|
/= E_Anonymous_Access_Type
|
|
or else
|
|
not Is_Class_Wide_Type
|
|
(Designated_Type (Etype (First_Discriminant (Typ))))
|
|
then
|
|
Error_Pragma_Arg
|
|
("type must have a class-wide access discriminant", Arg1);
|
|
end if;
|
|
end Java_Interface;
|
|
|
|
----------------
|
|
-- Keep_Names --
|
|
----------------
|
|
|
|
-- pragma Keep_Names ([On => ] local_NAME);
|
|
|
|
when Pragma_Keep_Names => Keep_Names : declare
|
|
Arg : Node_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_On);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
|
|
Arg := Expression (Arg1);
|
|
Analyze (Arg);
|
|
|
|
if Etype (Arg) = Any_Type then
|
|
return;
|
|
end if;
|
|
|
|
if not Is_Entity_Name (Arg)
|
|
or else Ekind (Entity (Arg)) /= E_Enumeration_Type
|
|
then
|
|
Error_Pragma_Arg
|
|
("pragma% requires a local enumeration type", Arg1);
|
|
end if;
|
|
|
|
Set_Discard_Names (Entity (Arg), False);
|
|
end Keep_Names;
|
|
|
|
-------------
|
|
-- License --
|
|
-------------
|
|
|
|
-- pragma License (RESTRICTED | UNRESTRICTED | GPL | MODIFIED_GPL);
|
|
|
|
when Pragma_License =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Valid_Configuration_Pragma;
|
|
Check_Arg_Is_Identifier (Arg1);
|
|
|
|
declare
|
|
Sind : constant Source_File_Index :=
|
|
Source_Index (Current_Sem_Unit);
|
|
|
|
begin
|
|
case Chars (Get_Pragma_Arg (Arg1)) is
|
|
when Name_GPL =>
|
|
Set_License (Sind, GPL);
|
|
|
|
when Name_Modified_GPL =>
|
|
Set_License (Sind, Modified_GPL);
|
|
|
|
when Name_Restricted =>
|
|
Set_License (Sind, Restricted);
|
|
|
|
when Name_Unrestricted =>
|
|
Set_License (Sind, Unrestricted);
|
|
|
|
when others =>
|
|
Error_Pragma_Arg ("invalid license name", Arg1);
|
|
end case;
|
|
end;
|
|
|
|
---------------
|
|
-- Link_With --
|
|
---------------
|
|
|
|
-- pragma Link_With (string_EXPRESSION {, string_EXPRESSION});
|
|
|
|
when Pragma_Link_With => Link_With : declare
|
|
Arg : Node_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
|
|
if Operating_Mode = Generate_Code
|
|
and then In_Extended_Main_Source_Unit (N)
|
|
then
|
|
Check_At_Least_N_Arguments (1);
|
|
Check_No_Identifiers;
|
|
Check_Is_In_Decl_Part_Or_Package_Spec;
|
|
Check_Arg_Is_Static_Expression (Arg1, Standard_String);
|
|
Start_String;
|
|
|
|
Arg := Arg1;
|
|
while Present (Arg) loop
|
|
Check_Arg_Is_Static_Expression (Arg, Standard_String);
|
|
|
|
-- Store argument, converting sequences of spaces to a
|
|
-- single null character (this is one of the differences
|
|
-- in processing between Link_With and Linker_Options).
|
|
|
|
Arg_Store : declare
|
|
C : constant Char_Code := Get_Char_Code (' ');
|
|
S : constant String_Id :=
|
|
Strval (Expr_Value_S (Expression (Arg)));
|
|
L : constant Nat := String_Length (S);
|
|
F : Nat := 1;
|
|
|
|
procedure Skip_Spaces;
|
|
-- Advance F past any spaces
|
|
|
|
-----------------
|
|
-- Skip_Spaces --
|
|
-----------------
|
|
|
|
procedure Skip_Spaces is
|
|
begin
|
|
while F <= L and then Get_String_Char (S, F) = C loop
|
|
F := F + 1;
|
|
end loop;
|
|
end Skip_Spaces;
|
|
|
|
-- Start of processing for Arg_Store
|
|
|
|
begin
|
|
Skip_Spaces; -- skip leading spaces
|
|
|
|
-- Loop through characters, changing any embedded
|
|
-- sequence of spaces to a single null character (this
|
|
-- is how Link_With/Linker_Options differ)
|
|
|
|
while F <= L loop
|
|
if Get_String_Char (S, F) = C then
|
|
Skip_Spaces;
|
|
exit when F > L;
|
|
Store_String_Char (ASCII.NUL);
|
|
|
|
else
|
|
Store_String_Char (Get_String_Char (S, F));
|
|
F := F + 1;
|
|
end if;
|
|
end loop;
|
|
end Arg_Store;
|
|
|
|
Arg := Next (Arg);
|
|
|
|
if Present (Arg) then
|
|
Store_String_Char (ASCII.NUL);
|
|
end if;
|
|
end loop;
|
|
|
|
Store_Linker_Option_String (End_String);
|
|
end if;
|
|
end Link_With;
|
|
|
|
------------------
|
|
-- Linker_Alias --
|
|
------------------
|
|
|
|
-- pragma Linker_Alias (
|
|
-- [Entity =>] LOCAL_NAME
|
|
-- [Target =>] static_string_EXPRESSION);
|
|
|
|
when Pragma_Linker_Alias =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Order ((Name_Entity, Name_Target));
|
|
Check_Arg_Count (2);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Optional_Identifier (Arg2, Name_Target);
|
|
Check_Arg_Is_Library_Level_Local_Name (Arg1);
|
|
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
|
|
|
|
-- The only processing required is to link this item on to the
|
|
-- list of rep items for the given entity. This is accomplished
|
|
-- by the call to Rep_Item_Too_Late (when no error is detected
|
|
-- and False is returned).
|
|
|
|
if Rep_Item_Too_Late (Entity (Expression (Arg1)), N) then
|
|
return;
|
|
else
|
|
Set_Has_Gigi_Rep_Item (Entity (Expression (Arg1)));
|
|
end if;
|
|
|
|
------------------------
|
|
-- Linker_Constructor --
|
|
------------------------
|
|
|
|
-- pragma Linker_Constructor (procedure_LOCAL_NAME);
|
|
|
|
-- Code is shared with Linker_Destructor
|
|
|
|
-----------------------
|
|
-- Linker_Destructor --
|
|
-----------------------
|
|
|
|
-- pragma Linker_Destructor (procedure_LOCAL_NAME);
|
|
|
|
when Pragma_Linker_Constructor |
|
|
Pragma_Linker_Destructor =>
|
|
Linker_Constructor : declare
|
|
Arg1_X : Node_Id;
|
|
Proc : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
Arg1_X := Expression (Arg1);
|
|
Analyze (Arg1_X);
|
|
Proc := Find_Unique_Parameterless_Procedure (Arg1_X, Arg1);
|
|
|
|
if not Is_Library_Level_Entity (Proc) then
|
|
Error_Pragma_Arg
|
|
("argument for pragma% must be library level entity", Arg1);
|
|
end if;
|
|
|
|
-- The only processing required is to link this item on to the
|
|
-- list of rep items for the given entity. This is accomplished
|
|
-- by the call to Rep_Item_Too_Late (when no error is detected
|
|
-- and False is returned).
|
|
|
|
if Rep_Item_Too_Late (Proc, N) then
|
|
return;
|
|
else
|
|
Set_Has_Gigi_Rep_Item (Proc);
|
|
end if;
|
|
end Linker_Constructor;
|
|
|
|
--------------------
|
|
-- Linker_Options --
|
|
--------------------
|
|
|
|
-- pragma Linker_Options (string_EXPRESSION {, string_EXPRESSION});
|
|
|
|
when Pragma_Linker_Options => Linker_Options : declare
|
|
Arg : Node_Id;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Is_In_Decl_Part_Or_Package_Spec;
|
|
Check_Arg_Is_Static_Expression (Arg1, Standard_String);
|
|
Start_String (Strval (Expr_Value_S (Expression (Arg1))));
|
|
|
|
Arg := Arg2;
|
|
while Present (Arg) loop
|
|
Check_Arg_Is_Static_Expression (Arg, Standard_String);
|
|
Store_String_Char (ASCII.NUL);
|
|
Store_String_Chars (Strval (Expr_Value_S (Expression (Arg))));
|
|
Arg := Next (Arg);
|
|
end loop;
|
|
|
|
if Operating_Mode = Generate_Code
|
|
and then In_Extended_Main_Source_Unit (N)
|
|
then
|
|
Store_Linker_Option_String (End_String);
|
|
end if;
|
|
end Linker_Options;
|
|
|
|
--------------------
|
|
-- Linker_Section --
|
|
--------------------
|
|
|
|
-- pragma Linker_Section (
|
|
-- [Entity =>] LOCAL_NAME
|
|
-- [Section =>] static_string_EXPRESSION);
|
|
|
|
when Pragma_Linker_Section =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Order ((Name_Entity, Name_Section));
|
|
Check_Arg_Count (2);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Optional_Identifier (Arg2, Name_Section);
|
|
Check_Arg_Is_Library_Level_Local_Name (Arg1);
|
|
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
|
|
|
|
-- This pragma applies only to objects
|
|
|
|
if not Is_Object (Entity (Expression (Arg1))) then
|
|
Error_Pragma_Arg ("pragma% applies only to objects", Arg1);
|
|
end if;
|
|
|
|
-- The only processing required is to link this item on to the
|
|
-- list of rep items for the given entity. This is accomplished
|
|
-- by the call to Rep_Item_Too_Late (when no error is detected
|
|
-- and False is returned).
|
|
|
|
if Rep_Item_Too_Late (Entity (Expression (Arg1)), N) then
|
|
return;
|
|
else
|
|
Set_Has_Gigi_Rep_Item (Entity (Expression (Arg1)));
|
|
end if;
|
|
|
|
----------
|
|
-- List --
|
|
----------
|
|
|
|
-- pragma List (On | Off)
|
|
|
|
-- There is nothing to do here, since we did all the processing for
|
|
-- this pragma in Par.Prag (so that it works properly even in syntax
|
|
-- only mode).
|
|
|
|
when Pragma_List =>
|
|
null;
|
|
|
|
--------------------
|
|
-- Locking_Policy --
|
|
--------------------
|
|
|
|
-- pragma Locking_Policy (policy_IDENTIFIER);
|
|
|
|
when Pragma_Locking_Policy => declare
|
|
LP : Character;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_Locking_Policy (Arg1);
|
|
Check_Valid_Configuration_Pragma;
|
|
Get_Name_String (Chars (Expression (Arg1)));
|
|
LP := Fold_Upper (Name_Buffer (1));
|
|
|
|
if Locking_Policy /= ' '
|
|
and then Locking_Policy /= LP
|
|
then
|
|
Error_Msg_Sloc := Locking_Policy_Sloc;
|
|
Error_Pragma ("locking policy incompatible with policy#");
|
|
|
|
-- Set new policy, but always preserve System_Location since we
|
|
-- like the error message with the run time name.
|
|
|
|
else
|
|
Locking_Policy := LP;
|
|
|
|
if Locking_Policy_Sloc /= System_Location then
|
|
Locking_Policy_Sloc := Loc;
|
|
end if;
|
|
end if;
|
|
end;
|
|
|
|
----------------
|
|
-- Long_Float --
|
|
----------------
|
|
|
|
-- pragma Long_Float (D_Float | G_Float);
|
|
|
|
when Pragma_Long_Float =>
|
|
GNAT_Pragma;
|
|
Check_Valid_Configuration_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifier (Arg1);
|
|
Check_Arg_Is_One_Of (Arg1, Name_D_Float, Name_G_Float);
|
|
|
|
if not OpenVMS_On_Target then
|
|
Error_Pragma ("?pragma% ignored (applies only to Open'V'M'S)");
|
|
end if;
|
|
|
|
-- D_Float case
|
|
|
|
if Chars (Expression (Arg1)) = Name_D_Float then
|
|
if Opt.Float_Format_Long = 'G' then
|
|
Error_Pragma ("G_Float previously specified");
|
|
end if;
|
|
|
|
Opt.Float_Format_Long := 'D';
|
|
|
|
-- G_Float case (this is the default, does not need overriding)
|
|
|
|
else
|
|
if Opt.Float_Format_Long = 'D' then
|
|
Error_Pragma ("D_Float previously specified");
|
|
end if;
|
|
|
|
Opt.Float_Format_Long := 'G';
|
|
end if;
|
|
|
|
Set_Standard_Fpt_Formats;
|
|
|
|
-----------------------
|
|
-- Machine_Attribute --
|
|
-----------------------
|
|
|
|
-- pragma Machine_Attribute (
|
|
-- [Entity =>] LOCAL_NAME,
|
|
-- [Attribute_Name =>] static_string_EXPRESSION
|
|
-- [, [Info =>] static_EXPRESSION] );
|
|
|
|
when Pragma_Machine_Attribute => Machine_Attribute : declare
|
|
Def_Id : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Order ((Name_Entity, Name_Attribute_Name, Name_Info));
|
|
|
|
if Arg_Count = 3 then
|
|
Check_Optional_Identifier (Arg3, Name_Info);
|
|
Check_Arg_Is_Static_Expression (Arg3);
|
|
else
|
|
Check_Arg_Count (2);
|
|
end if;
|
|
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Optional_Identifier (Arg2, Name_Attribute_Name);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
|
|
Def_Id := Entity (Expression (Arg1));
|
|
|
|
if Is_Access_Type (Def_Id) then
|
|
Def_Id := Designated_Type (Def_Id);
|
|
end if;
|
|
|
|
if Rep_Item_Too_Early (Def_Id, N) then
|
|
return;
|
|
end if;
|
|
|
|
Def_Id := Underlying_Type (Def_Id);
|
|
|
|
-- The only processing required is to link this item on to the
|
|
-- list of rep items for the given entity. This is accomplished
|
|
-- by the call to Rep_Item_Too_Late (when no error is detected
|
|
-- and False is returned).
|
|
|
|
if Rep_Item_Too_Late (Def_Id, N) then
|
|
return;
|
|
else
|
|
Set_Has_Gigi_Rep_Item (Entity (Expression (Arg1)));
|
|
end if;
|
|
end Machine_Attribute;
|
|
|
|
----------
|
|
-- Main --
|
|
----------
|
|
|
|
-- pragma Main
|
|
-- (MAIN_OPTION [, MAIN_OPTION]);
|
|
|
|
-- MAIN_OPTION ::=
|
|
-- [STACK_SIZE =>] static_integer_EXPRESSION
|
|
-- | [TASK_STACK_SIZE_DEFAULT =>] static_integer_EXPRESSION
|
|
-- | [TIME_SLICING_ENABLED =>] static_boolean_EXPRESSION
|
|
|
|
when Pragma_Main => Main : declare
|
|
Args : Args_List (1 .. 3);
|
|
Names : constant Name_List (1 .. 3) := (
|
|
Name_Stack_Size,
|
|
Name_Task_Stack_Size_Default,
|
|
Name_Time_Slicing_Enabled);
|
|
|
|
Nod : Node_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
|
|
for J in 1 .. 2 loop
|
|
if Present (Args (J)) then
|
|
Check_Arg_Is_Static_Expression (Args (J), Any_Integer);
|
|
end if;
|
|
end loop;
|
|
|
|
if Present (Args (3)) then
|
|
Check_Arg_Is_Static_Expression (Args (3), Standard_Boolean);
|
|
end if;
|
|
|
|
Nod := Next (N);
|
|
while Present (Nod) loop
|
|
if Nkind (Nod) = N_Pragma
|
|
and then Pragma_Name (Nod) = Name_Main
|
|
then
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N ("duplicate pragma% not permitted", Nod);
|
|
end if;
|
|
|
|
Next (Nod);
|
|
end loop;
|
|
end Main;
|
|
|
|
------------------
|
|
-- Main_Storage --
|
|
------------------
|
|
|
|
-- pragma Main_Storage
|
|
-- (MAIN_STORAGE_OPTION [, MAIN_STORAGE_OPTION]);
|
|
|
|
-- MAIN_STORAGE_OPTION ::=
|
|
-- [WORKING_STORAGE =>] static_SIMPLE_EXPRESSION
|
|
-- | [TOP_GUARD =>] static_SIMPLE_EXPRESSION
|
|
|
|
when Pragma_Main_Storage => Main_Storage : declare
|
|
Args : Args_List (1 .. 2);
|
|
Names : constant Name_List (1 .. 2) := (
|
|
Name_Working_Storage,
|
|
Name_Top_Guard);
|
|
|
|
Nod : Node_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
|
|
for J in 1 .. 2 loop
|
|
if Present (Args (J)) then
|
|
Check_Arg_Is_Static_Expression (Args (J), Any_Integer);
|
|
end if;
|
|
end loop;
|
|
|
|
Check_In_Main_Program;
|
|
|
|
Nod := Next (N);
|
|
while Present (Nod) loop
|
|
if Nkind (Nod) = N_Pragma
|
|
and then Pragma_Name (Nod) = Name_Main_Storage
|
|
then
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N ("duplicate pragma% not permitted", Nod);
|
|
end if;
|
|
|
|
Next (Nod);
|
|
end loop;
|
|
end Main_Storage;
|
|
|
|
-----------------
|
|
-- Memory_Size --
|
|
-----------------
|
|
|
|
-- pragma Memory_Size (NUMERIC_LITERAL)
|
|
|
|
when Pragma_Memory_Size =>
|
|
GNAT_Pragma;
|
|
|
|
-- Memory size is simply ignored
|
|
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_Integer_Literal (Arg1);
|
|
|
|
-------------
|
|
-- No_Body --
|
|
-------------
|
|
|
|
-- pragma No_Body;
|
|
|
|
-- The only correct use of this pragma is on its own in a file, in
|
|
-- which case it is specially processed (see Gnat1drv.Check_Bad_Body
|
|
-- and Frontend, which use Sinput.L.Source_File_Is_Pragma_No_Body to
|
|
-- check for a file containing nothing but a No_Body pragma). If we
|
|
-- attempt to process it during normal semantics processing, it means
|
|
-- it was misplaced.
|
|
|
|
when Pragma_No_Body =>
|
|
GNAT_Pragma;
|
|
Pragma_Misplaced;
|
|
|
|
---------------
|
|
-- No_Return --
|
|
---------------
|
|
|
|
-- pragma No_Return (procedure_LOCAL_NAME {, procedure_Local_Name});
|
|
|
|
when Pragma_No_Return => No_Return : declare
|
|
Id : Node_Id;
|
|
E : Entity_Id;
|
|
Found : Boolean;
|
|
Arg : Node_Id;
|
|
|
|
begin
|
|
Ada_2005_Pragma;
|
|
Check_At_Least_N_Arguments (1);
|
|
|
|
-- Loop through arguments of pragma
|
|
|
|
Arg := Arg1;
|
|
while Present (Arg) loop
|
|
Check_Arg_Is_Local_Name (Arg);
|
|
Id := Expression (Arg);
|
|
Analyze (Id);
|
|
|
|
if not Is_Entity_Name (Id) then
|
|
Error_Pragma_Arg ("entity name required", Arg);
|
|
end if;
|
|
|
|
if Etype (Id) = Any_Type then
|
|
raise Pragma_Exit;
|
|
end if;
|
|
|
|
-- Loop to find matching procedures
|
|
|
|
E := Entity (Id);
|
|
Found := False;
|
|
while Present (E)
|
|
and then Scope (E) = Current_Scope
|
|
loop
|
|
if Ekind (E) = E_Procedure
|
|
or else Ekind (E) = E_Generic_Procedure
|
|
then
|
|
Set_No_Return (E);
|
|
|
|
-- Set flag on any alias as well
|
|
|
|
if Is_Overloadable (E) and then Present (Alias (E)) then
|
|
Set_No_Return (Alias (E));
|
|
end if;
|
|
|
|
Found := True;
|
|
end if;
|
|
|
|
E := Homonym (E);
|
|
end loop;
|
|
|
|
if not Found then
|
|
Error_Pragma_Arg ("no procedure & found for pragma%", Arg);
|
|
end if;
|
|
|
|
Next (Arg);
|
|
end loop;
|
|
end No_Return;
|
|
|
|
-----------------
|
|
-- No_Run_Time --
|
|
-----------------
|
|
|
|
-- pragma No_Run_Time;
|
|
|
|
-- Note: this pragma is retained for backwards compatibility. See
|
|
-- body of Rtsfind for full details on its handling.
|
|
|
|
when Pragma_No_Run_Time =>
|
|
GNAT_Pragma;
|
|
Check_Valid_Configuration_Pragma;
|
|
Check_Arg_Count (0);
|
|
|
|
No_Run_Time_Mode := True;
|
|
Configurable_Run_Time_Mode := True;
|
|
|
|
-- Set Duration to 32 bits if word size is 32
|
|
|
|
if Ttypes.System_Word_Size = 32 then
|
|
Duration_32_Bits_On_Target := True;
|
|
end if;
|
|
|
|
-- Set appropriate restrictions
|
|
|
|
Set_Restriction (No_Finalization, N);
|
|
Set_Restriction (No_Exception_Handlers, N);
|
|
Set_Restriction (Max_Tasks, N, 0);
|
|
Set_Restriction (No_Tasking, N);
|
|
|
|
------------------------
|
|
-- No_Strict_Aliasing --
|
|
------------------------
|
|
|
|
-- pragma No_Strict_Aliasing [([Entity =>] type_LOCAL_NAME)];
|
|
|
|
when Pragma_No_Strict_Aliasing => No_Strict_Aliasing : declare
|
|
E_Id : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_At_Most_N_Arguments (1);
|
|
|
|
if Arg_Count = 0 then
|
|
Check_Valid_Configuration_Pragma;
|
|
Opt.No_Strict_Aliasing := True;
|
|
|
|
else
|
|
Check_Optional_Identifier (Arg2, Name_Entity);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
E_Id := Entity (Expression (Arg1));
|
|
|
|
if E_Id = Any_Type then
|
|
return;
|
|
elsif No (E_Id) or else not Is_Access_Type (E_Id) then
|
|
Error_Pragma_Arg ("pragma% requires access type", Arg1);
|
|
end if;
|
|
|
|
Set_No_Strict_Aliasing (Implementation_Base_Type (E_Id));
|
|
end if;
|
|
end No_Strict_Aliasing;
|
|
|
|
-----------------------
|
|
-- Normalize_Scalars --
|
|
-----------------------
|
|
|
|
-- pragma Normalize_Scalars;
|
|
|
|
when Pragma_Normalize_Scalars =>
|
|
Check_Ada_83_Warning;
|
|
Check_Arg_Count (0);
|
|
Check_Valid_Configuration_Pragma;
|
|
|
|
-- Normalize_Scalars creates false positives in CodePeer, so
|
|
-- ignore this pragma in this mode.
|
|
|
|
if not CodePeer_Mode then
|
|
Normalize_Scalars := True;
|
|
Init_Or_Norm_Scalars := True;
|
|
end if;
|
|
|
|
-----------------
|
|
-- Obsolescent --
|
|
-----------------
|
|
|
|
-- pragma Obsolescent;
|
|
|
|
-- pragma Obsolescent (
|
|
-- [Message =>] static_string_EXPRESSION
|
|
-- [,[Version =>] Ada_05]]);
|
|
|
|
-- pragma Obsolescent (
|
|
-- [Entity =>] NAME
|
|
-- [,[Message =>] static_string_EXPRESSION
|
|
-- [,[Version =>] Ada_05]] );
|
|
|
|
when Pragma_Obsolescent => Obsolescent : declare
|
|
Ename : Node_Id;
|
|
Decl : Node_Id;
|
|
|
|
procedure Set_Obsolescent (E : Entity_Id);
|
|
-- Given an entity Ent, mark it as obsolescent if appropriate
|
|
|
|
---------------------
|
|
-- Set_Obsolescent --
|
|
---------------------
|
|
|
|
procedure Set_Obsolescent (E : Entity_Id) is
|
|
Active : Boolean;
|
|
Ent : Entity_Id;
|
|
S : String_Id;
|
|
|
|
begin
|
|
Active := True;
|
|
Ent := E;
|
|
|
|
-- Entity name was given
|
|
|
|
if Present (Ename) then
|
|
|
|
-- If entity name matches, we are fine. Save entity in
|
|
-- pragma argument, for ASIS use.
|
|
|
|
if Chars (Ename) = Chars (Ent) then
|
|
Set_Entity (Ename, Ent);
|
|
Generate_Reference (Ent, Ename);
|
|
|
|
-- If entity name does not match, only possibility is an
|
|
-- enumeration literal from an enumeration type declaration.
|
|
|
|
elsif Ekind (Ent) /= E_Enumeration_Type then
|
|
Error_Pragma
|
|
("pragma % entity name does not match declaration");
|
|
|
|
else
|
|
Ent := First_Literal (E);
|
|
loop
|
|
if No (Ent) then
|
|
Error_Pragma
|
|
("pragma % entity name does not match any " &
|
|
"enumeration literal");
|
|
|
|
elsif Chars (Ent) = Chars (Ename) then
|
|
Set_Entity (Ename, Ent);
|
|
Generate_Reference (Ent, Ename);
|
|
exit;
|
|
|
|
else
|
|
Ent := Next_Literal (Ent);
|
|
end if;
|
|
end loop;
|
|
end if;
|
|
end if;
|
|
|
|
-- Ent points to entity to be marked
|
|
|
|
if Arg_Count >= 1 then
|
|
|
|
-- Deal with static string argument
|
|
|
|
Check_Arg_Is_Static_Expression (Arg1, Standard_String);
|
|
S := Strval (Expression (Arg1));
|
|
|
|
for J in 1 .. String_Length (S) loop
|
|
if not In_Character_Range (Get_String_Char (S, J)) then
|
|
Error_Pragma_Arg
|
|
("pragma% argument does not allow wide characters",
|
|
Arg1);
|
|
end if;
|
|
end loop;
|
|
|
|
Obsolescent_Warnings.Append
|
|
((Ent => Ent, Msg => Strval (Expression (Arg1))));
|
|
|
|
-- Check for Ada_05 parameter
|
|
|
|
if Arg_Count /= 1 then
|
|
Check_Arg_Count (2);
|
|
|
|
declare
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg2);
|
|
|
|
begin
|
|
Check_Arg_Is_Identifier (Argx);
|
|
|
|
if Chars (Argx) /= Name_Ada_05 then
|
|
Error_Msg_Name_2 := Name_Ada_05;
|
|
Error_Pragma_Arg
|
|
("only allowed argument for pragma% is %", Argx);
|
|
end if;
|
|
|
|
if Ada_Version_Explicit < Ada_05
|
|
or else not Warn_On_Ada_2005_Compatibility
|
|
then
|
|
Active := False;
|
|
end if;
|
|
end;
|
|
end if;
|
|
end if;
|
|
|
|
-- Set flag if pragma active
|
|
|
|
if Active then
|
|
Set_Is_Obsolescent (Ent);
|
|
end if;
|
|
|
|
return;
|
|
end Set_Obsolescent;
|
|
|
|
-- Start of processing for pragma Obsolescent
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
|
|
Check_At_Most_N_Arguments (3);
|
|
|
|
-- See if first argument specifies an entity name
|
|
|
|
if Arg_Count >= 1
|
|
and then
|
|
(Chars (Arg1) = Name_Entity
|
|
or else
|
|
Nkind_In (Get_Pragma_Arg (Arg1), N_Character_Literal,
|
|
N_Identifier,
|
|
N_Operator_Symbol))
|
|
then
|
|
Ename := Get_Pragma_Arg (Arg1);
|
|
|
|
-- Eliminate first argument, so we can share processing
|
|
|
|
Arg1 := Arg2;
|
|
Arg2 := Arg3;
|
|
Arg_Count := Arg_Count - 1;
|
|
|
|
-- No Entity name argument given
|
|
|
|
else
|
|
Ename := Empty;
|
|
end if;
|
|
|
|
if Arg_Count >= 1 then
|
|
Check_Optional_Identifier (Arg1, Name_Message);
|
|
|
|
if Arg_Count = 2 then
|
|
Check_Optional_Identifier (Arg2, Name_Version);
|
|
end if;
|
|
end if;
|
|
|
|
-- Get immediately preceding declaration
|
|
|
|
Decl := Prev (N);
|
|
while Present (Decl) and then Nkind (Decl) = N_Pragma loop
|
|
Prev (Decl);
|
|
end loop;
|
|
|
|
-- Cases where we do not follow anything other than another pragma
|
|
|
|
if No (Decl) then
|
|
|
|
-- First case: library level compilation unit declaration with
|
|
-- the pragma immediately following the declaration.
|
|
|
|
if Nkind (Parent (N)) = N_Compilation_Unit_Aux then
|
|
Set_Obsolescent
|
|
(Defining_Entity (Unit (Parent (Parent (N)))));
|
|
return;
|
|
|
|
-- Case 2: library unit placement for package
|
|
|
|
else
|
|
declare
|
|
Ent : constant Entity_Id := Find_Lib_Unit_Name;
|
|
begin
|
|
if Is_Package_Or_Generic_Package (Ent) then
|
|
Set_Obsolescent (Ent);
|
|
return;
|
|
end if;
|
|
end;
|
|
end if;
|
|
|
|
-- Cases where we must follow a declaration
|
|
|
|
else
|
|
if Nkind (Decl) not in N_Declaration
|
|
and then Nkind (Decl) not in N_Later_Decl_Item
|
|
and then Nkind (Decl) not in N_Generic_Declaration
|
|
and then Nkind (Decl) not in N_Renaming_Declaration
|
|
then
|
|
Error_Pragma
|
|
("pragma% misplaced, "
|
|
& "must immediately follow a declaration");
|
|
|
|
else
|
|
Set_Obsolescent (Defining_Entity (Decl));
|
|
return;
|
|
end if;
|
|
end if;
|
|
end Obsolescent;
|
|
|
|
--------------
|
|
-- Optimize --
|
|
--------------
|
|
|
|
-- pragma Optimize (Time | Space | Off);
|
|
|
|
-- The actual check for optimize is done in Gigi. Note that this
|
|
-- pragma does not actually change the optimization setting, it
|
|
-- simply checks that it is consistent with the pragma.
|
|
|
|
when Pragma_Optimize =>
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_One_Of (Arg1, Name_Time, Name_Space, Name_Off);
|
|
|
|
------------------------
|
|
-- Optimize_Alignment --
|
|
------------------------
|
|
|
|
-- pragma Optimize_Alignment (Time | Space | Off);
|
|
|
|
when Pragma_Optimize_Alignment =>
|
|
GNAT_Pragma;
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Valid_Configuration_Pragma;
|
|
|
|
declare
|
|
Nam : constant Name_Id := Chars (Get_Pragma_Arg (Arg1));
|
|
begin
|
|
case Nam is
|
|
when Name_Time =>
|
|
Opt.Optimize_Alignment := 'T';
|
|
when Name_Space =>
|
|
Opt.Optimize_Alignment := 'S';
|
|
when Name_Off =>
|
|
Opt.Optimize_Alignment := 'O';
|
|
when others =>
|
|
Error_Pragma_Arg ("invalid argument for pragma%", Arg1);
|
|
end case;
|
|
end;
|
|
|
|
-- Set indication that mode is set locally. If we are in fact in a
|
|
-- configuration pragma file, this setting is harmless since the
|
|
-- switch will get reset anyway at the start of each unit.
|
|
|
|
Optimize_Alignment_Local := True;
|
|
|
|
----------
|
|
-- Pack --
|
|
----------
|
|
|
|
-- pragma Pack (first_subtype_LOCAL_NAME);
|
|
|
|
when Pragma_Pack => Pack : declare
|
|
Assoc : constant Node_Id := Arg1;
|
|
Type_Id : Node_Id;
|
|
Typ : Entity_Id;
|
|
|
|
begin
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
|
|
Type_Id := Expression (Assoc);
|
|
Find_Type (Type_Id);
|
|
Typ := Entity (Type_Id);
|
|
|
|
if Typ = Any_Type
|
|
or else Rep_Item_Too_Early (Typ, N)
|
|
then
|
|
return;
|
|
else
|
|
Typ := Underlying_Type (Typ);
|
|
end if;
|
|
|
|
if not Is_Array_Type (Typ) and then not Is_Record_Type (Typ) then
|
|
Error_Pragma ("pragma% must specify array or record type");
|
|
end if;
|
|
|
|
Check_First_Subtype (Arg1);
|
|
|
|
if Has_Pragma_Pack (Typ) then
|
|
Error_Pragma ("duplicate pragma%, only one allowed");
|
|
|
|
-- Array type
|
|
|
|
elsif Is_Array_Type (Typ) then
|
|
|
|
-- Pack not allowed for aliased or atomic components
|
|
|
|
if Has_Aliased_Components (Base_Type (Typ)) then
|
|
Error_Pragma
|
|
("pragma% ignored, cannot pack aliased components?");
|
|
|
|
elsif Has_Atomic_Components (Typ)
|
|
or else Is_Atomic (Component_Type (Typ))
|
|
then
|
|
Error_Pragma
|
|
("?pragma% ignored, cannot pack atomic components");
|
|
end if;
|
|
|
|
-- If we had an explicit component size given, then we do not
|
|
-- let Pack override this given size. We also give a warning
|
|
-- that Pack is being ignored unless we can tell for sure that
|
|
-- the Pack would not have had any effect anyway.
|
|
|
|
if Has_Component_Size_Clause (Typ) then
|
|
if Known_Static_RM_Size (Component_Type (Typ))
|
|
and then
|
|
RM_Size (Component_Type (Typ)) = Component_Size (Typ)
|
|
then
|
|
null;
|
|
else
|
|
Error_Pragma
|
|
("?pragma% ignored, explicit component size given");
|
|
end if;
|
|
|
|
-- If no prior array component size given, Pack is effective
|
|
|
|
else
|
|
if not Rep_Item_Too_Late (Typ, N) then
|
|
|
|
-- In the context of static code analysis, we do not need
|
|
-- complex front-end expansions related to pragma Pack,
|
|
-- so disable handling of pragma Pack in this case.
|
|
|
|
if CodePeer_Mode then
|
|
null;
|
|
|
|
-- For normal non-VM target, do the packing
|
|
|
|
elsif VM_Target = No_VM then
|
|
Set_Is_Packed (Base_Type (Typ));
|
|
Set_Has_Pragma_Pack (Base_Type (Typ));
|
|
Set_Has_Non_Standard_Rep (Base_Type (Typ));
|
|
|
|
-- If we ignore the pack, then warn about this, except
|
|
-- that we suppress the warning in GNAT mode.
|
|
|
|
elsif not GNAT_Mode then
|
|
Error_Pragma
|
|
("?pragma% ignored in this configuration");
|
|
end if;
|
|
end if;
|
|
end if;
|
|
|
|
-- For record types, the pack is always effective
|
|
|
|
else pragma Assert (Is_Record_Type (Typ));
|
|
if not Rep_Item_Too_Late (Typ, N) then
|
|
if VM_Target = No_VM then
|
|
Set_Is_Packed (Base_Type (Typ));
|
|
Set_Has_Pragma_Pack (Base_Type (Typ));
|
|
Set_Has_Non_Standard_Rep (Base_Type (Typ));
|
|
|
|
elsif not GNAT_Mode then
|
|
Error_Pragma ("?pragma% ignored in this configuration");
|
|
end if;
|
|
end if;
|
|
end if;
|
|
end Pack;
|
|
|
|
----------
|
|
-- Page --
|
|
----------
|
|
|
|
-- pragma Page;
|
|
|
|
-- There is nothing to do here, since we did all the processing for
|
|
-- this pragma in Par.Prag (so that it works properly even in syntax
|
|
-- only mode).
|
|
|
|
when Pragma_Page =>
|
|
null;
|
|
|
|
-------------
|
|
-- Passive --
|
|
-------------
|
|
|
|
-- pragma Passive [(PASSIVE_FORM)];
|
|
|
|
-- PASSIVE_FORM ::= Semaphore | No
|
|
|
|
when Pragma_Passive =>
|
|
GNAT_Pragma;
|
|
|
|
if Nkind (Parent (N)) /= N_Task_Definition then
|
|
Error_Pragma ("pragma% must be within task definition");
|
|
end if;
|
|
|
|
if Arg_Count /= 0 then
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_One_Of (Arg1, Name_Semaphore, Name_No);
|
|
end if;
|
|
|
|
----------------------------------
|
|
-- Preelaborable_Initialization --
|
|
----------------------------------
|
|
|
|
-- pragma Preelaborable_Initialization (DIRECT_NAME);
|
|
|
|
when Pragma_Preelaborable_Initialization => Preelab_Init : declare
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
Ada_2005_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_Identifier (Arg1);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
Check_First_Subtype (Arg1);
|
|
Ent := Entity (Expression (Arg1));
|
|
|
|
if not Is_Private_Type (Ent)
|
|
and then not Is_Protected_Type (Ent)
|
|
then
|
|
Error_Pragma_Arg
|
|
("pragma % can only be applied to private or protected type",
|
|
Arg1);
|
|
end if;
|
|
|
|
-- Give an error if the pragma is applied to a protected type that
|
|
-- does not qualify (due to having entries, or due to components
|
|
-- that do not qualify).
|
|
|
|
if Is_Protected_Type (Ent)
|
|
and then not Has_Preelaborable_Initialization (Ent)
|
|
then
|
|
Error_Msg_N
|
|
("protected type & does not have preelaborable " &
|
|
"initialization", Ent);
|
|
|
|
-- Otherwise mark the type as definitely having preelaborable
|
|
-- initialization.
|
|
|
|
else
|
|
Set_Known_To_Have_Preelab_Init (Ent);
|
|
end if;
|
|
|
|
if Has_Pragma_Preelab_Init (Ent)
|
|
and then Warn_On_Redundant_Constructs
|
|
then
|
|
Error_Pragma ("?duplicate pragma%!");
|
|
else
|
|
Set_Has_Pragma_Preelab_Init (Ent);
|
|
end if;
|
|
end Preelab_Init;
|
|
|
|
--------------------
|
|
-- Persistent_BSS --
|
|
--------------------
|
|
|
|
when Pragma_Persistent_BSS => Persistent_BSS : declare
|
|
Decl : Node_Id;
|
|
Ent : Entity_Id;
|
|
Prag : Node_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_At_Most_N_Arguments (1);
|
|
|
|
-- Case of application to specific object (one argument)
|
|
|
|
if Arg_Count = 1 then
|
|
Check_Arg_Is_Library_Level_Local_Name (Arg1);
|
|
|
|
if not Is_Entity_Name (Expression (Arg1))
|
|
or else
|
|
(Ekind (Entity (Expression (Arg1))) /= E_Variable
|
|
and then Ekind (Entity (Expression (Arg1))) /= E_Constant)
|
|
then
|
|
Error_Pragma_Arg ("pragma% only applies to objects", Arg1);
|
|
end if;
|
|
|
|
Ent := Entity (Expression (Arg1));
|
|
Decl := Parent (Ent);
|
|
|
|
if Rep_Item_Too_Late (Ent, N) then
|
|
return;
|
|
end if;
|
|
|
|
if Present (Expression (Decl)) then
|
|
Error_Pragma_Arg
|
|
("object for pragma% cannot have initialization", Arg1);
|
|
end if;
|
|
|
|
if not Is_Potentially_Persistent_Type (Etype (Ent)) then
|
|
Error_Pragma_Arg
|
|
("object type for pragma% is not potentially persistent",
|
|
Arg1);
|
|
end if;
|
|
|
|
Prag :=
|
|
Make_Linker_Section_Pragma
|
|
(Ent, Sloc (N), ".persistent.bss");
|
|
Insert_After (N, Prag);
|
|
Analyze (Prag);
|
|
|
|
-- Case of use as configuration pragma with no arguments
|
|
|
|
else
|
|
Check_Valid_Configuration_Pragma;
|
|
Persistent_BSS_Mode := True;
|
|
end if;
|
|
end Persistent_BSS;
|
|
|
|
-------------
|
|
-- Polling --
|
|
-------------
|
|
|
|
-- pragma Polling (ON | OFF);
|
|
|
|
when Pragma_Polling =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
|
|
Polling_Required := (Chars (Expression (Arg1)) = Name_On);
|
|
|
|
-------------------
|
|
-- Postcondition --
|
|
-------------------
|
|
|
|
-- pragma Postcondition ([Check =>] Boolean_Expression
|
|
-- [,[Message =>] String_Expression]);
|
|
|
|
when Pragma_Postcondition => Postcondition : declare
|
|
In_Body : Boolean;
|
|
pragma Warnings (Off, In_Body);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_At_Least_N_Arguments (1);
|
|
Check_At_Most_N_Arguments (2);
|
|
Check_Optional_Identifier (Arg1, Name_Check);
|
|
|
|
-- All we need to do here is call the common check procedure,
|
|
-- the remainder of the processing is found in Sem_Ch6/Sem_Ch7.
|
|
|
|
Check_Precondition_Postcondition (In_Body);
|
|
end Postcondition;
|
|
|
|
------------------
|
|
-- Precondition --
|
|
------------------
|
|
|
|
-- pragma Precondition ([Check =>] Boolean_Expression
|
|
-- [,[Message =>] String_Expression]);
|
|
|
|
when Pragma_Precondition => Precondition : declare
|
|
In_Body : Boolean;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_At_Least_N_Arguments (1);
|
|
Check_At_Most_N_Arguments (2);
|
|
Check_Optional_Identifier (Arg1, Name_Check);
|
|
|
|
Check_Precondition_Postcondition (In_Body);
|
|
|
|
-- If in spec, nothing more to do. If in body, then we convert the
|
|
-- pragma to pragma Check (Precondition, cond [, msg]). Note we do
|
|
-- this whether or not precondition checks are enabled. That works
|
|
-- fine since pragma Check will do this check, and will also
|
|
-- analyze the condition itself in the proper context.
|
|
|
|
if In_Body then
|
|
if Arg_Count = 2 then
|
|
Check_Optional_Identifier (Arg3, Name_Message);
|
|
Analyze_And_Resolve (Get_Pragma_Arg (Arg2), Standard_String);
|
|
end if;
|
|
|
|
Rewrite (N,
|
|
Make_Pragma (Loc,
|
|
Chars => Name_Check,
|
|
Pragma_Argument_Associations => New_List (
|
|
Make_Pragma_Argument_Association (Loc,
|
|
Expression =>
|
|
Make_Identifier (Loc,
|
|
Chars => Name_Precondition)),
|
|
|
|
Make_Pragma_Argument_Association (Sloc (Arg1),
|
|
Expression => Relocate_Node (Get_Pragma_Arg (Arg1))))));
|
|
|
|
if Arg_Count = 2 then
|
|
Append_To (Pragma_Argument_Associations (N),
|
|
Make_Pragma_Argument_Association (Sloc (Arg2),
|
|
Expression => Relocate_Node (Get_Pragma_Arg (Arg2))));
|
|
end if;
|
|
|
|
Analyze (N);
|
|
end if;
|
|
end Precondition;
|
|
|
|
------------------
|
|
-- Preelaborate --
|
|
------------------
|
|
|
|
-- pragma Preelaborate [(library_unit_NAME)];
|
|
|
|
-- Set the flag Is_Preelaborated of program unit name entity
|
|
|
|
when Pragma_Preelaborate => Preelaborate : declare
|
|
Pa : constant Node_Id := Parent (N);
|
|
Pk : constant Node_Kind := Nkind (Pa);
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_Valid_Library_Unit_Pragma;
|
|
|
|
if Nkind (N) = N_Null_Statement then
|
|
return;
|
|
end if;
|
|
|
|
Ent := Find_Lib_Unit_Name;
|
|
|
|
-- This filters out pragmas inside generic parent then
|
|
-- show up inside instantiation
|
|
|
|
if Present (Ent)
|
|
and then not (Pk = N_Package_Specification
|
|
and then Present (Generic_Parent (Pa)))
|
|
then
|
|
if not Debug_Flag_U then
|
|
Set_Is_Preelaborated (Ent);
|
|
Set_Suppress_Elaboration_Warnings (Ent);
|
|
end if;
|
|
end if;
|
|
end Preelaborate;
|
|
|
|
---------------------
|
|
-- Preelaborate_05 --
|
|
---------------------
|
|
|
|
-- pragma Preelaborate_05 [(library_unit_NAME)];
|
|
|
|
-- This pragma is useable only in GNAT_Mode, where it is used like
|
|
-- pragma Preelaborate but it is only effective in Ada 2005 mode
|
|
-- (otherwise it is ignored). This is used to implement AI-362 which
|
|
-- recategorizes some run-time packages in Ada 2005 mode.
|
|
|
|
when Pragma_Preelaborate_05 => Preelaborate_05 : declare
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Valid_Library_Unit_Pragma;
|
|
|
|
if not GNAT_Mode then
|
|
Error_Pragma ("pragma% only available in GNAT mode");
|
|
end if;
|
|
|
|
if Nkind (N) = N_Null_Statement then
|
|
return;
|
|
end if;
|
|
|
|
-- This is one of the few cases where we need to test the value of
|
|
-- Ada_Version_Explicit rather than Ada_Version (which is always
|
|
-- set to Ada_05 in a predefined unit), we need to know the
|
|
-- explicit version set to know if this pragma is active.
|
|
|
|
if Ada_Version_Explicit >= Ada_05 then
|
|
Ent := Find_Lib_Unit_Name;
|
|
Set_Is_Preelaborated (Ent);
|
|
Set_Suppress_Elaboration_Warnings (Ent);
|
|
end if;
|
|
end Preelaborate_05;
|
|
|
|
--------------
|
|
-- Priority --
|
|
--------------
|
|
|
|
-- pragma Priority (EXPRESSION);
|
|
|
|
when Pragma_Priority => Priority : declare
|
|
P : constant Node_Id := Parent (N);
|
|
Arg : Node_Id;
|
|
|
|
begin
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
|
|
-- Subprogram case
|
|
|
|
if Nkind (P) = N_Subprogram_Body then
|
|
Check_In_Main_Program;
|
|
|
|
Arg := Expression (Arg1);
|
|
Analyze_And_Resolve (Arg, Standard_Integer);
|
|
|
|
-- Must be static
|
|
|
|
if not Is_Static_Expression (Arg) then
|
|
Flag_Non_Static_Expr
|
|
("main subprogram priority is not static!", Arg);
|
|
raise Pragma_Exit;
|
|
|
|
-- If constraint error, then we already signalled an error
|
|
|
|
elsif Raises_Constraint_Error (Arg) then
|
|
null;
|
|
|
|
-- Otherwise check in range
|
|
|
|
else
|
|
declare
|
|
Val : constant Uint := Expr_Value (Arg);
|
|
|
|
begin
|
|
if Val < 0
|
|
or else Val > Expr_Value (Expression
|
|
(Parent (RTE (RE_Max_Priority))))
|
|
then
|
|
Error_Pragma_Arg
|
|
("main subprogram priority is out of range", Arg1);
|
|
end if;
|
|
end;
|
|
end if;
|
|
|
|
Set_Main_Priority
|
|
(Current_Sem_Unit, UI_To_Int (Expr_Value (Arg)));
|
|
|
|
-- Load an arbitrary entity from System.Tasking to make sure
|
|
-- this package is implicitly with'ed, since we need to have
|
|
-- the tasking run-time active for the pragma Priority to have
|
|
-- any effect.
|
|
|
|
declare
|
|
Discard : Entity_Id;
|
|
pragma Warnings (Off, Discard);
|
|
begin
|
|
Discard := RTE (RE_Task_List);
|
|
end;
|
|
|
|
-- Task or Protected, must be of type Integer
|
|
|
|
elsif Nkind_In (P, N_Protected_Definition, N_Task_Definition) then
|
|
Arg := Expression (Arg1);
|
|
|
|
-- The expression must be analyzed in the special manner
|
|
-- described in "Handling of Default and Per-Object
|
|
-- Expressions" in sem.ads.
|
|
|
|
Preanalyze_Spec_Expression (Arg, Standard_Integer);
|
|
|
|
if not Is_Static_Expression (Arg) then
|
|
Check_Restriction (Static_Priorities, Arg);
|
|
end if;
|
|
|
|
-- Anything else is incorrect
|
|
|
|
else
|
|
Pragma_Misplaced;
|
|
end if;
|
|
|
|
if Has_Priority_Pragma (P) then
|
|
Error_Pragma ("duplicate pragma% not allowed");
|
|
else
|
|
Set_Has_Priority_Pragma (P, True);
|
|
|
|
if Nkind_In (P, N_Protected_Definition, N_Task_Definition) then
|
|
Record_Rep_Item (Defining_Identifier (Parent (P)), N);
|
|
-- exp_ch9 should use this ???
|
|
end if;
|
|
end if;
|
|
end Priority;
|
|
|
|
-----------------------------------
|
|
-- Priority_Specific_Dispatching --
|
|
-----------------------------------
|
|
|
|
-- pragma Priority_Specific_Dispatching (
|
|
-- policy_IDENTIFIER,
|
|
-- first_priority_EXPRESSION,
|
|
-- last_priority_EXPRESSION);
|
|
|
|
when Pragma_Priority_Specific_Dispatching =>
|
|
Priority_Specific_Dispatching : declare
|
|
Prio_Id : constant Entity_Id := RTE (RE_Any_Priority);
|
|
-- This is the entity System.Any_Priority;
|
|
|
|
DP : Character;
|
|
Lower_Bound : Node_Id;
|
|
Upper_Bound : Node_Id;
|
|
Lower_Val : Uint;
|
|
Upper_Val : Uint;
|
|
|
|
begin
|
|
Ada_2005_Pragma;
|
|
Check_Arg_Count (3);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_Task_Dispatching_Policy (Arg1);
|
|
Check_Valid_Configuration_Pragma;
|
|
Get_Name_String (Chars (Expression (Arg1)));
|
|
DP := Fold_Upper (Name_Buffer (1));
|
|
|
|
Lower_Bound := Expression (Arg2);
|
|
Check_Arg_Is_Static_Expression (Lower_Bound, Standard_Integer);
|
|
Lower_Val := Expr_Value (Lower_Bound);
|
|
|
|
Upper_Bound := Expression (Arg3);
|
|
Check_Arg_Is_Static_Expression (Upper_Bound, Standard_Integer);
|
|
Upper_Val := Expr_Value (Upper_Bound);
|
|
|
|
-- It is not allowed to use Task_Dispatching_Policy and
|
|
-- Priority_Specific_Dispatching in the same partition.
|
|
|
|
if Task_Dispatching_Policy /= ' ' then
|
|
Error_Msg_Sloc := Task_Dispatching_Policy_Sloc;
|
|
Error_Pragma
|
|
("pragma% incompatible with Task_Dispatching_Policy#");
|
|
|
|
-- Check lower bound in range
|
|
|
|
elsif Lower_Val < Expr_Value (Type_Low_Bound (Prio_Id))
|
|
or else
|
|
Lower_Val > Expr_Value (Type_High_Bound (Prio_Id))
|
|
then
|
|
Error_Pragma_Arg
|
|
("first_priority is out of range", Arg2);
|
|
|
|
-- Check upper bound in range
|
|
|
|
elsif Upper_Val < Expr_Value (Type_Low_Bound (Prio_Id))
|
|
or else
|
|
Upper_Val > Expr_Value (Type_High_Bound (Prio_Id))
|
|
then
|
|
Error_Pragma_Arg
|
|
("last_priority is out of range", Arg3);
|
|
|
|
-- Check that the priority range is valid
|
|
|
|
elsif Lower_Val > Upper_Val then
|
|
Error_Pragma
|
|
("last_priority_expression must be greater than" &
|
|
" or equal to first_priority_expression");
|
|
|
|
-- Store the new policy, but always preserve System_Location since
|
|
-- we like the error message with the run-time name.
|
|
|
|
else
|
|
-- Check overlapping in the priority ranges specified in other
|
|
-- Priority_Specific_Dispatching pragmas within the same
|
|
-- partition. We can only check those we know about!
|
|
|
|
for J in
|
|
Specific_Dispatching.First .. Specific_Dispatching.Last
|
|
loop
|
|
if Specific_Dispatching.Table (J).First_Priority in
|
|
UI_To_Int (Lower_Val) .. UI_To_Int (Upper_Val)
|
|
or else Specific_Dispatching.Table (J).Last_Priority in
|
|
UI_To_Int (Lower_Val) .. UI_To_Int (Upper_Val)
|
|
then
|
|
Error_Msg_Sloc :=
|
|
Specific_Dispatching.Table (J).Pragma_Loc;
|
|
Error_Pragma
|
|
("priority range overlaps with "
|
|
& "Priority_Specific_Dispatching#");
|
|
end if;
|
|
end loop;
|
|
|
|
-- The use of Priority_Specific_Dispatching is incompatible
|
|
-- with Task_Dispatching_Policy.
|
|
|
|
if Task_Dispatching_Policy /= ' ' then
|
|
Error_Msg_Sloc := Task_Dispatching_Policy_Sloc;
|
|
Error_Pragma
|
|
("Priority_Specific_Dispatching incompatible "
|
|
& "with Task_Dispatching_Policy#");
|
|
end if;
|
|
|
|
-- The use of Priority_Specific_Dispatching forces ceiling
|
|
-- locking policy.
|
|
|
|
if Locking_Policy /= ' ' and then Locking_Policy /= 'C' then
|
|
Error_Msg_Sloc := Locking_Policy_Sloc;
|
|
Error_Pragma
|
|
("Priority_Specific_Dispatching incompatible "
|
|
& "with Locking_Policy#");
|
|
|
|
-- Set the Ceiling_Locking policy, but preserve System_Location
|
|
-- since we like the error message with the run time name.
|
|
|
|
else
|
|
Locking_Policy := 'C';
|
|
|
|
if Locking_Policy_Sloc /= System_Location then
|
|
Locking_Policy_Sloc := Loc;
|
|
end if;
|
|
end if;
|
|
|
|
-- Add entry in the table
|
|
|
|
Specific_Dispatching.Append
|
|
((Dispatching_Policy => DP,
|
|
First_Priority => UI_To_Int (Lower_Val),
|
|
Last_Priority => UI_To_Int (Upper_Val),
|
|
Pragma_Loc => Loc));
|
|
end if;
|
|
end Priority_Specific_Dispatching;
|
|
|
|
-------------
|
|
-- Profile --
|
|
-------------
|
|
|
|
-- pragma Profile (profile_IDENTIFIER);
|
|
|
|
-- profile_IDENTIFIER => Restricted | Ravenscar
|
|
|
|
when Pragma_Profile =>
|
|
Ada_2005_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Valid_Configuration_Pragma;
|
|
Check_No_Identifiers;
|
|
|
|
declare
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg1);
|
|
begin
|
|
if Chars (Argx) = Name_Ravenscar then
|
|
Set_Ravenscar_Profile (N);
|
|
elsif Chars (Argx) = Name_Restricted then
|
|
Set_Profile_Restrictions
|
|
(Restricted, N, Warn => Treat_Restrictions_As_Warnings);
|
|
else
|
|
Error_Pragma_Arg ("& is not a valid profile", Argx);
|
|
end if;
|
|
end;
|
|
|
|
----------------------
|
|
-- Profile_Warnings --
|
|
----------------------
|
|
|
|
-- pragma Profile_Warnings (profile_IDENTIFIER);
|
|
|
|
-- profile_IDENTIFIER => Restricted | Ravenscar
|
|
|
|
when Pragma_Profile_Warnings =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Valid_Configuration_Pragma;
|
|
Check_No_Identifiers;
|
|
|
|
declare
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg1);
|
|
begin
|
|
if Chars (Argx) = Name_Ravenscar then
|
|
Set_Profile_Restrictions (Ravenscar, N, Warn => True);
|
|
elsif Chars (Argx) = Name_Restricted then
|
|
Set_Profile_Restrictions (Restricted, N, Warn => True);
|
|
else
|
|
Error_Pragma_Arg ("& is not a valid profile", Argx);
|
|
end if;
|
|
end;
|
|
|
|
--------------------------
|
|
-- Propagate_Exceptions --
|
|
--------------------------
|
|
|
|
-- pragma Propagate_Exceptions;
|
|
|
|
-- Note: this pragma is obsolete and has no effect
|
|
|
|
when Pragma_Propagate_Exceptions =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
|
|
if In_Extended_Main_Source_Unit (N) then
|
|
Propagate_Exceptions := True;
|
|
end if;
|
|
|
|
------------------
|
|
-- Psect_Object --
|
|
------------------
|
|
|
|
-- pragma Psect_Object (
|
|
-- [Internal =>] LOCAL_NAME,
|
|
-- [, [External =>] EXTERNAL_SYMBOL]
|
|
-- [, [Size =>] EXTERNAL_SYMBOL]);
|
|
|
|
when Pragma_Psect_Object | Pragma_Common_Object =>
|
|
Psect_Object : declare
|
|
Args : Args_List (1 .. 3);
|
|
Names : constant Name_List (1 .. 3) := (
|
|
Name_Internal,
|
|
Name_External,
|
|
Name_Size);
|
|
|
|
Internal : Node_Id renames Args (1);
|
|
External : Node_Id renames Args (2);
|
|
Size : Node_Id renames Args (3);
|
|
|
|
Def_Id : Entity_Id;
|
|
|
|
procedure Check_Too_Long (Arg : Node_Id);
|
|
-- Posts message if the argument is an identifier with more
|
|
-- than 31 characters, or a string literal with more than
|
|
-- 31 characters, and we are operating under VMS
|
|
|
|
--------------------
|
|
-- Check_Too_Long --
|
|
--------------------
|
|
|
|
procedure Check_Too_Long (Arg : Node_Id) is
|
|
X : constant Node_Id := Original_Node (Arg);
|
|
|
|
begin
|
|
if not Nkind_In (X, N_String_Literal, N_Identifier) then
|
|
Error_Pragma_Arg
|
|
("inappropriate argument for pragma %", Arg);
|
|
end if;
|
|
|
|
if OpenVMS_On_Target then
|
|
if (Nkind (X) = N_String_Literal
|
|
and then String_Length (Strval (X)) > 31)
|
|
or else
|
|
(Nkind (X) = N_Identifier
|
|
and then Length_Of_Name (Chars (X)) > 31)
|
|
then
|
|
Error_Pragma_Arg
|
|
("argument for pragma % is longer than 31 characters",
|
|
Arg);
|
|
end if;
|
|
end if;
|
|
end Check_Too_Long;
|
|
|
|
-- Start of processing for Common_Object/Psect_Object
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
Process_Extended_Import_Export_Internal_Arg (Internal);
|
|
|
|
Def_Id := Entity (Internal);
|
|
|
|
if Ekind (Def_Id) /= E_Constant
|
|
and then Ekind (Def_Id) /= E_Variable
|
|
then
|
|
Error_Pragma_Arg
|
|
("pragma% must designate an object", Internal);
|
|
end if;
|
|
|
|
Check_Too_Long (Internal);
|
|
|
|
if Is_Imported (Def_Id) or else Is_Exported (Def_Id) then
|
|
Error_Pragma_Arg
|
|
("cannot use pragma% for imported/exported object",
|
|
Internal);
|
|
end if;
|
|
|
|
if Is_Concurrent_Type (Etype (Internal)) then
|
|
Error_Pragma_Arg
|
|
("cannot specify pragma % for task/protected object",
|
|
Internal);
|
|
end if;
|
|
|
|
if Has_Rep_Pragma (Def_Id, Name_Common_Object)
|
|
or else
|
|
Has_Rep_Pragma (Def_Id, Name_Psect_Object)
|
|
then
|
|
Error_Msg_N ("?duplicate Common/Psect_Object pragma", N);
|
|
end if;
|
|
|
|
if Ekind (Def_Id) = E_Constant then
|
|
Error_Pragma_Arg
|
|
("cannot specify pragma % for a constant", Internal);
|
|
end if;
|
|
|
|
if Is_Record_Type (Etype (Internal)) then
|
|
declare
|
|
Ent : Entity_Id;
|
|
Decl : Entity_Id;
|
|
|
|
begin
|
|
Ent := First_Entity (Etype (Internal));
|
|
while Present (Ent) loop
|
|
Decl := Declaration_Node (Ent);
|
|
|
|
if Ekind (Ent) = E_Component
|
|
and then Nkind (Decl) = N_Component_Declaration
|
|
and then Present (Expression (Decl))
|
|
and then Warn_On_Export_Import
|
|
then
|
|
Error_Msg_N
|
|
("?object for pragma % has defaults", Internal);
|
|
exit;
|
|
|
|
else
|
|
Next_Entity (Ent);
|
|
end if;
|
|
end loop;
|
|
end;
|
|
end if;
|
|
|
|
if Present (Size) then
|
|
Check_Too_Long (Size);
|
|
end if;
|
|
|
|
if Present (External) then
|
|
Check_Arg_Is_External_Name (External);
|
|
Check_Too_Long (External);
|
|
end if;
|
|
|
|
-- If all error tests pass, link pragma on to the rep item chain
|
|
|
|
Record_Rep_Item (Def_Id, N);
|
|
end Psect_Object;
|
|
|
|
----------
|
|
-- Pure --
|
|
----------
|
|
|
|
-- pragma Pure [(library_unit_NAME)];
|
|
|
|
when Pragma_Pure => Pure : declare
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_Valid_Library_Unit_Pragma;
|
|
|
|
if Nkind (N) = N_Null_Statement then
|
|
return;
|
|
end if;
|
|
|
|
Ent := Find_Lib_Unit_Name;
|
|
Set_Is_Pure (Ent);
|
|
Set_Has_Pragma_Pure (Ent);
|
|
Set_Suppress_Elaboration_Warnings (Ent);
|
|
end Pure;
|
|
|
|
-------------
|
|
-- Pure_05 --
|
|
-------------
|
|
|
|
-- pragma Pure_05 [(library_unit_NAME)];
|
|
|
|
-- This pragma is useable only in GNAT_Mode, where it is used like
|
|
-- pragma Pure but it is only effective in Ada 2005 mode (otherwise
|
|
-- it is ignored). It may be used after a pragma Preelaborate, in
|
|
-- which case it overrides the effect of the pragma Preelaborate.
|
|
-- This is used to implement AI-362 which recategorizes some run-time
|
|
-- packages in Ada 2005 mode.
|
|
|
|
when Pragma_Pure_05 => Pure_05 : declare
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Valid_Library_Unit_Pragma;
|
|
|
|
if not GNAT_Mode then
|
|
Error_Pragma ("pragma% only available in GNAT mode");
|
|
end if;
|
|
|
|
if Nkind (N) = N_Null_Statement then
|
|
return;
|
|
end if;
|
|
|
|
-- This is one of the few cases where we need to test the value of
|
|
-- Ada_Version_Explicit rather than Ada_Version (which is always
|
|
-- set to Ada_05 in a predefined unit), we need to know the
|
|
-- explicit version set to know if this pragma is active.
|
|
|
|
if Ada_Version_Explicit >= Ada_05 then
|
|
Ent := Find_Lib_Unit_Name;
|
|
Set_Is_Preelaborated (Ent, False);
|
|
Set_Is_Pure (Ent);
|
|
Set_Suppress_Elaboration_Warnings (Ent);
|
|
end if;
|
|
end Pure_05;
|
|
|
|
-------------------
|
|
-- Pure_Function --
|
|
-------------------
|
|
|
|
-- pragma Pure_Function ([Entity =>] function_LOCAL_NAME);
|
|
|
|
when Pragma_Pure_Function => Pure_Function : declare
|
|
E_Id : Node_Id;
|
|
E : Entity_Id;
|
|
Def_Id : Entity_Id;
|
|
Effective : Boolean := False;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
E_Id := Expression (Arg1);
|
|
|
|
if Error_Posted (E_Id) then
|
|
return;
|
|
end if;
|
|
|
|
-- Loop through homonyms (overloadings) of referenced entity
|
|
|
|
E := Entity (E_Id);
|
|
|
|
if Present (E) then
|
|
loop
|
|
Def_Id := Get_Base_Subprogram (E);
|
|
|
|
if Ekind (Def_Id) /= E_Function
|
|
and then Ekind (Def_Id) /= E_Generic_Function
|
|
and then Ekind (Def_Id) /= E_Operator
|
|
then
|
|
Error_Pragma_Arg
|
|
("pragma% requires a function name", Arg1);
|
|
end if;
|
|
|
|
Set_Is_Pure (Def_Id);
|
|
|
|
if not Has_Pragma_Pure_Function (Def_Id) then
|
|
Set_Has_Pragma_Pure_Function (Def_Id);
|
|
Effective := True;
|
|
end if;
|
|
|
|
E := Homonym (E);
|
|
exit when No (E) or else Scope (E) /= Current_Scope;
|
|
end loop;
|
|
|
|
if not Effective
|
|
and then Warn_On_Redundant_Constructs
|
|
then
|
|
Error_Msg_NE ("pragma Pure_Function on& is redundant?",
|
|
N, Entity (E_Id));
|
|
end if;
|
|
end if;
|
|
end Pure_Function;
|
|
|
|
--------------------
|
|
-- Queuing_Policy --
|
|
--------------------
|
|
|
|
-- pragma Queuing_Policy (policy_IDENTIFIER);
|
|
|
|
when Pragma_Queuing_Policy => declare
|
|
QP : Character;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_Queuing_Policy (Arg1);
|
|
Check_Valid_Configuration_Pragma;
|
|
Get_Name_String (Chars (Expression (Arg1)));
|
|
QP := Fold_Upper (Name_Buffer (1));
|
|
|
|
if Queuing_Policy /= ' '
|
|
and then Queuing_Policy /= QP
|
|
then
|
|
Error_Msg_Sloc := Queuing_Policy_Sloc;
|
|
Error_Pragma ("queuing policy incompatible with policy#");
|
|
|
|
-- Set new policy, but always preserve System_Location since we
|
|
-- like the error message with the run time name.
|
|
|
|
else
|
|
Queuing_Policy := QP;
|
|
|
|
if Queuing_Policy_Sloc /= System_Location then
|
|
Queuing_Policy_Sloc := Loc;
|
|
end if;
|
|
end if;
|
|
end;
|
|
|
|
-----------------------
|
|
-- Relative_Deadline --
|
|
-----------------------
|
|
|
|
-- pragma Relative_Deadline (time_span_EXPRESSION);
|
|
|
|
when Pragma_Relative_Deadline => Relative_Deadline : declare
|
|
P : constant Node_Id := Parent (N);
|
|
Arg : Node_Id;
|
|
|
|
begin
|
|
Ada_2005_Pragma;
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
|
|
Arg := Expression (Arg1);
|
|
|
|
-- The expression must be analyzed in the special manner described
|
|
-- in "Handling of Default and Per-Object Expressions" in sem.ads.
|
|
|
|
Preanalyze_Spec_Expression (Arg, RTE (RE_Time_Span));
|
|
|
|
-- Subprogram case
|
|
|
|
if Nkind (P) = N_Subprogram_Body then
|
|
Check_In_Main_Program;
|
|
|
|
-- Tasks
|
|
|
|
elsif Nkind (P) = N_Task_Definition then
|
|
null;
|
|
|
|
-- Anything else is incorrect
|
|
|
|
else
|
|
Pragma_Misplaced;
|
|
end if;
|
|
|
|
if Has_Relative_Deadline_Pragma (P) then
|
|
Error_Pragma ("duplicate pragma% not allowed");
|
|
else
|
|
Set_Has_Relative_Deadline_Pragma (P, True);
|
|
|
|
if Nkind (P) = N_Task_Definition then
|
|
Record_Rep_Item (Defining_Identifier (Parent (P)), N);
|
|
end if;
|
|
end if;
|
|
end Relative_Deadline;
|
|
|
|
---------------------------
|
|
-- Remote_Call_Interface --
|
|
---------------------------
|
|
|
|
-- pragma Remote_Call_Interface [(library_unit_NAME)];
|
|
|
|
when Pragma_Remote_Call_Interface => Remote_Call_Interface : declare
|
|
Cunit_Node : Node_Id;
|
|
Cunit_Ent : Entity_Id;
|
|
K : Node_Kind;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_Valid_Library_Unit_Pragma;
|
|
|
|
if Nkind (N) = N_Null_Statement then
|
|
return;
|
|
end if;
|
|
|
|
Cunit_Node := Cunit (Current_Sem_Unit);
|
|
K := Nkind (Unit (Cunit_Node));
|
|
Cunit_Ent := Cunit_Entity (Current_Sem_Unit);
|
|
|
|
if K = N_Package_Declaration
|
|
or else K = N_Generic_Package_Declaration
|
|
or else K = N_Subprogram_Declaration
|
|
or else K = N_Generic_Subprogram_Declaration
|
|
or else (K = N_Subprogram_Body
|
|
and then Acts_As_Spec (Unit (Cunit_Node)))
|
|
then
|
|
null;
|
|
else
|
|
Error_Pragma (
|
|
"pragma% must apply to package or subprogram declaration");
|
|
end if;
|
|
|
|
Set_Is_Remote_Call_Interface (Cunit_Ent);
|
|
end Remote_Call_Interface;
|
|
|
|
------------------
|
|
-- Remote_Types --
|
|
------------------
|
|
|
|
-- pragma Remote_Types [(library_unit_NAME)];
|
|
|
|
when Pragma_Remote_Types => Remote_Types : declare
|
|
Cunit_Node : Node_Id;
|
|
Cunit_Ent : Entity_Id;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_Valid_Library_Unit_Pragma;
|
|
|
|
if Nkind (N) = N_Null_Statement then
|
|
return;
|
|
end if;
|
|
|
|
Cunit_Node := Cunit (Current_Sem_Unit);
|
|
Cunit_Ent := Cunit_Entity (Current_Sem_Unit);
|
|
|
|
if not Nkind_In (Unit (Cunit_Node), N_Package_Declaration,
|
|
N_Generic_Package_Declaration)
|
|
then
|
|
Error_Pragma
|
|
("pragma% can only apply to a package declaration");
|
|
end if;
|
|
|
|
Set_Is_Remote_Types (Cunit_Ent);
|
|
end Remote_Types;
|
|
|
|
---------------
|
|
-- Ravenscar --
|
|
---------------
|
|
|
|
-- pragma Ravenscar;
|
|
|
|
when Pragma_Ravenscar =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
Check_Valid_Configuration_Pragma;
|
|
Set_Ravenscar_Profile (N);
|
|
|
|
if Warn_On_Obsolescent_Feature then
|
|
Error_Msg_N
|
|
("pragma Ravenscar is an obsolescent feature?", N);
|
|
Error_Msg_N
|
|
("|use pragma Profile (Ravenscar) instead", N);
|
|
end if;
|
|
|
|
-------------------------
|
|
-- Restricted_Run_Time --
|
|
-------------------------
|
|
|
|
-- pragma Restricted_Run_Time;
|
|
|
|
when Pragma_Restricted_Run_Time =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
Check_Valid_Configuration_Pragma;
|
|
Set_Profile_Restrictions
|
|
(Restricted, N, Warn => Treat_Restrictions_As_Warnings);
|
|
|
|
if Warn_On_Obsolescent_Feature then
|
|
Error_Msg_N
|
|
("pragma Restricted_Run_Time is an obsolescent feature?", N);
|
|
Error_Msg_N
|
|
("|use pragma Profile (Restricted) instead", N);
|
|
end if;
|
|
|
|
------------------
|
|
-- Restrictions --
|
|
------------------
|
|
|
|
-- pragma Restrictions (RESTRICTION {, RESTRICTION});
|
|
|
|
-- RESTRICTION ::=
|
|
-- restriction_IDENTIFIER
|
|
-- | restriction_parameter_IDENTIFIER => EXPRESSION
|
|
|
|
when Pragma_Restrictions =>
|
|
Process_Restrictions_Or_Restriction_Warnings
|
|
(Warn => Treat_Restrictions_As_Warnings);
|
|
|
|
--------------------------
|
|
-- Restriction_Warnings --
|
|
--------------------------
|
|
|
|
-- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
|
|
|
|
-- RESTRICTION ::=
|
|
-- restriction_IDENTIFIER
|
|
-- | restriction_parameter_IDENTIFIER => EXPRESSION
|
|
|
|
when Pragma_Restriction_Warnings =>
|
|
GNAT_Pragma;
|
|
Process_Restrictions_Or_Restriction_Warnings (Warn => True);
|
|
|
|
----------------
|
|
-- Reviewable --
|
|
----------------
|
|
|
|
-- pragma Reviewable;
|
|
|
|
when Pragma_Reviewable =>
|
|
Check_Ada_83_Warning;
|
|
Check_Arg_Count (0);
|
|
|
|
-- Call dummy debugging function rv. This is done to assist front
|
|
-- end debugging. By placing a Reviewable pragma in the source
|
|
-- program, a breakpoint on rv catches this place in the source,
|
|
-- allowing convenient stepping to the point of interest.
|
|
|
|
rv;
|
|
|
|
--------------------------
|
|
-- Short_Circuit_And_Or --
|
|
--------------------------
|
|
|
|
when Pragma_Short_Circuit_And_Or =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
Check_Valid_Configuration_Pragma;
|
|
Short_Circuit_And_Or := True;
|
|
|
|
-------------------
|
|
-- Share_Generic --
|
|
-------------------
|
|
|
|
-- pragma Share_Generic (NAME {, NAME});
|
|
|
|
when Pragma_Share_Generic =>
|
|
GNAT_Pragma;
|
|
Process_Generic_List;
|
|
|
|
------------
|
|
-- Shared --
|
|
------------
|
|
|
|
-- pragma Shared (LOCAL_NAME);
|
|
|
|
when Pragma_Shared =>
|
|
GNAT_Pragma;
|
|
Process_Atomic_Shared_Volatile;
|
|
|
|
--------------------
|
|
-- Shared_Passive --
|
|
--------------------
|
|
|
|
-- pragma Shared_Passive [(library_unit_NAME)];
|
|
|
|
-- Set the flag Is_Shared_Passive of program unit name entity
|
|
|
|
when Pragma_Shared_Passive => Shared_Passive : declare
|
|
Cunit_Node : Node_Id;
|
|
Cunit_Ent : Entity_Id;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_Valid_Library_Unit_Pragma;
|
|
|
|
if Nkind (N) = N_Null_Statement then
|
|
return;
|
|
end if;
|
|
|
|
Cunit_Node := Cunit (Current_Sem_Unit);
|
|
Cunit_Ent := Cunit_Entity (Current_Sem_Unit);
|
|
|
|
if not Nkind_In (Unit (Cunit_Node), N_Package_Declaration,
|
|
N_Generic_Package_Declaration)
|
|
then
|
|
Error_Pragma
|
|
("pragma% can only apply to a package declaration");
|
|
end if;
|
|
|
|
Set_Is_Shared_Passive (Cunit_Ent);
|
|
end Shared_Passive;
|
|
|
|
----------------------
|
|
-- Source_File_Name --
|
|
----------------------
|
|
|
|
-- There are five forms for this pragma:
|
|
|
|
-- pragma Source_File_Name (
|
|
-- [UNIT_NAME =>] unit_NAME,
|
|
-- BODY_FILE_NAME => STRING_LITERAL
|
|
-- [, [INDEX =>] INTEGER_LITERAL]);
|
|
|
|
-- pragma Source_File_Name (
|
|
-- [UNIT_NAME =>] unit_NAME,
|
|
-- SPEC_FILE_NAME => STRING_LITERAL
|
|
-- [, [INDEX =>] INTEGER_LITERAL]);
|
|
|
|
-- pragma Source_File_Name (
|
|
-- BODY_FILE_NAME => STRING_LITERAL
|
|
-- [, DOT_REPLACEMENT => STRING_LITERAL]
|
|
-- [, CASING => CASING_SPEC]);
|
|
|
|
-- pragma Source_File_Name (
|
|
-- SPEC_FILE_NAME => STRING_LITERAL
|
|
-- [, DOT_REPLACEMENT => STRING_LITERAL]
|
|
-- [, CASING => CASING_SPEC]);
|
|
|
|
-- pragma Source_File_Name (
|
|
-- SUBUNIT_FILE_NAME => STRING_LITERAL
|
|
-- [, DOT_REPLACEMENT => STRING_LITERAL]
|
|
-- [, CASING => CASING_SPEC]);
|
|
|
|
-- CASING_SPEC ::= Uppercase | Lowercase | Mixedcase
|
|
|
|
-- Pragma Source_File_Name_Project (SFNP) is equivalent to pragma
|
|
-- Source_File_Name (SFN), however their usage is exclusive: SFN can
|
|
-- only be used when no project file is used, while SFNP can only be
|
|
-- used when a project file is used.
|
|
|
|
-- No processing here. Processing was completed during parsing, since
|
|
-- we need to have file names set as early as possible. Units are
|
|
-- loaded well before semantic processing starts.
|
|
|
|
-- The only processing we defer to this point is the check for
|
|
-- correct placement.
|
|
|
|
when Pragma_Source_File_Name =>
|
|
GNAT_Pragma;
|
|
Check_Valid_Configuration_Pragma;
|
|
|
|
------------------------------
|
|
-- Source_File_Name_Project --
|
|
------------------------------
|
|
|
|
-- See Source_File_Name for syntax
|
|
|
|
-- No processing here. Processing was completed during parsing, since
|
|
-- we need to have file names set as early as possible. Units are
|
|
-- loaded well before semantic processing starts.
|
|
|
|
-- The only processing we defer to this point is the check for
|
|
-- correct placement.
|
|
|
|
when Pragma_Source_File_Name_Project =>
|
|
GNAT_Pragma;
|
|
Check_Valid_Configuration_Pragma;
|
|
|
|
-- Check that a pragma Source_File_Name_Project is used only in a
|
|
-- configuration pragmas file.
|
|
|
|
-- Pragmas Source_File_Name_Project should only be generated by
|
|
-- the Project Manager in configuration pragmas files.
|
|
|
|
-- This is really an ugly test. It seems to depend on some
|
|
-- accidental and undocumented property. At the very least it
|
|
-- needs to be documented, but it would be better to have a
|
|
-- clean way of testing if we are in a configuration file???
|
|
|
|
if Present (Parent (N)) then
|
|
Error_Pragma
|
|
("pragma% can only appear in a configuration pragmas file");
|
|
end if;
|
|
|
|
----------------------
|
|
-- Source_Reference --
|
|
----------------------
|
|
|
|
-- pragma Source_Reference (INTEGER_LITERAL [, STRING_LITERAL]);
|
|
|
|
-- Nothing to do, all processing completed in Par.Prag, since we need
|
|
-- the information for possible parser messages that are output.
|
|
|
|
when Pragma_Source_Reference =>
|
|
GNAT_Pragma;
|
|
|
|
--------------------------------
|
|
-- Static_Elaboration_Desired --
|
|
--------------------------------
|
|
|
|
-- pragma Static_Elaboration_Desired (DIRECT_NAME);
|
|
|
|
when Pragma_Static_Elaboration_Desired =>
|
|
GNAT_Pragma;
|
|
Check_At_Most_N_Arguments (1);
|
|
|
|
if Is_Compilation_Unit (Current_Scope)
|
|
and then Ekind (Current_Scope) = E_Package
|
|
then
|
|
Set_Static_Elaboration_Desired (Current_Scope, True);
|
|
else
|
|
Error_Pragma ("pragma% must apply to a library-level package");
|
|
end if;
|
|
|
|
------------------
|
|
-- Storage_Size --
|
|
------------------
|
|
|
|
-- pragma Storage_Size (EXPRESSION);
|
|
|
|
when Pragma_Storage_Size => Storage_Size : declare
|
|
P : constant Node_Id := Parent (N);
|
|
Arg : Node_Id;
|
|
|
|
begin
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
|
|
-- The expression must be analyzed in the special manner described
|
|
-- in "Handling of Default Expressions" in sem.ads.
|
|
|
|
Arg := Expression (Arg1);
|
|
Preanalyze_Spec_Expression (Arg, Any_Integer);
|
|
|
|
if not Is_Static_Expression (Arg) then
|
|
Check_Restriction (Static_Storage_Size, Arg);
|
|
end if;
|
|
|
|
if Nkind (P) /= N_Task_Definition then
|
|
Pragma_Misplaced;
|
|
return;
|
|
|
|
else
|
|
if Has_Storage_Size_Pragma (P) then
|
|
Error_Pragma ("duplicate pragma% not allowed");
|
|
else
|
|
Set_Has_Storage_Size_Pragma (P, True);
|
|
end if;
|
|
|
|
Record_Rep_Item (Defining_Identifier (Parent (P)), N);
|
|
-- ??? exp_ch9 should use this!
|
|
end if;
|
|
end Storage_Size;
|
|
|
|
------------------
|
|
-- Storage_Unit --
|
|
------------------
|
|
|
|
-- pragma Storage_Unit (NUMERIC_LITERAL);
|
|
|
|
-- Only permitted argument is System'Storage_Unit value
|
|
|
|
when Pragma_Storage_Unit =>
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_Integer_Literal (Arg1);
|
|
|
|
if Intval (Expression (Arg1)) /=
|
|
UI_From_Int (Ttypes.System_Storage_Unit)
|
|
then
|
|
Error_Msg_Uint_1 := UI_From_Int (Ttypes.System_Storage_Unit);
|
|
Error_Pragma_Arg
|
|
("the only allowed argument for pragma% is ^", Arg1);
|
|
end if;
|
|
|
|
--------------------
|
|
-- Stream_Convert --
|
|
--------------------
|
|
|
|
-- pragma Stream_Convert (
|
|
-- [Entity =>] type_LOCAL_NAME,
|
|
-- [Read =>] function_NAME,
|
|
-- [Write =>] function NAME);
|
|
|
|
when Pragma_Stream_Convert => Stream_Convert : declare
|
|
|
|
procedure Check_OK_Stream_Convert_Function (Arg : Node_Id);
|
|
-- Check that the given argument is the name of a local function
|
|
-- of one argument that is not overloaded earlier in the current
|
|
-- local scope. A check is also made that the argument is a
|
|
-- function with one parameter.
|
|
|
|
--------------------------------------
|
|
-- Check_OK_Stream_Convert_Function --
|
|
--------------------------------------
|
|
|
|
procedure Check_OK_Stream_Convert_Function (Arg : Node_Id) is
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
Check_Arg_Is_Local_Name (Arg);
|
|
Ent := Entity (Expression (Arg));
|
|
|
|
if Has_Homonym (Ent) then
|
|
Error_Pragma_Arg
|
|
("argument for pragma% may not be overloaded", Arg);
|
|
end if;
|
|
|
|
if Ekind (Ent) /= E_Function
|
|
or else No (First_Formal (Ent))
|
|
or else Present (Next_Formal (First_Formal (Ent)))
|
|
then
|
|
Error_Pragma_Arg
|
|
("argument for pragma% must be" &
|
|
" function of one argument", Arg);
|
|
end if;
|
|
end Check_OK_Stream_Convert_Function;
|
|
|
|
-- Start of processing for Stream_Convert
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Order ((Name_Entity, Name_Read, Name_Write));
|
|
Check_Arg_Count (3);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Optional_Identifier (Arg2, Name_Read);
|
|
Check_Optional_Identifier (Arg3, Name_Write);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
Check_OK_Stream_Convert_Function (Arg2);
|
|
Check_OK_Stream_Convert_Function (Arg3);
|
|
|
|
declare
|
|
Typ : constant Entity_Id :=
|
|
Underlying_Type (Entity (Expression (Arg1)));
|
|
Read : constant Entity_Id := Entity (Expression (Arg2));
|
|
Write : constant Entity_Id := Entity (Expression (Arg3));
|
|
|
|
begin
|
|
Check_First_Subtype (Arg1);
|
|
|
|
-- Check for too early or too late. Note that we don't enforce
|
|
-- the rule about primitive operations in this case, since, as
|
|
-- is the case for explicit stream attributes themselves, these
|
|
-- restrictions are not appropriate. Note that the chaining of
|
|
-- the pragma by Rep_Item_Too_Late is actually the critical
|
|
-- processing done for this pragma.
|
|
|
|
if Rep_Item_Too_Early (Typ, N)
|
|
or else
|
|
Rep_Item_Too_Late (Typ, N, FOnly => True)
|
|
then
|
|
return;
|
|
end if;
|
|
|
|
-- Return if previous error
|
|
|
|
if Etype (Typ) = Any_Type
|
|
or else
|
|
Etype (Read) = Any_Type
|
|
or else
|
|
Etype (Write) = Any_Type
|
|
then
|
|
return;
|
|
end if;
|
|
|
|
-- Error checks
|
|
|
|
if Underlying_Type (Etype (Read)) /= Typ then
|
|
Error_Pragma_Arg
|
|
("incorrect return type for function&", Arg2);
|
|
end if;
|
|
|
|
if Underlying_Type (Etype (First_Formal (Write))) /= Typ then
|
|
Error_Pragma_Arg
|
|
("incorrect parameter type for function&", Arg3);
|
|
end if;
|
|
|
|
if Underlying_Type (Etype (First_Formal (Read))) /=
|
|
Underlying_Type (Etype (Write))
|
|
then
|
|
Error_Pragma_Arg
|
|
("result type of & does not match Read parameter type",
|
|
Arg3);
|
|
end if;
|
|
end;
|
|
end Stream_Convert;
|
|
|
|
-------------------------
|
|
-- Style_Checks (GNAT) --
|
|
-------------------------
|
|
|
|
-- pragma Style_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
|
|
|
|
-- This is processed by the parser since some of the style checks
|
|
-- take place during source scanning and parsing. This means that
|
|
-- we don't need to issue error messages here.
|
|
|
|
when Pragma_Style_Checks => Style_Checks : declare
|
|
A : constant Node_Id := Expression (Arg1);
|
|
S : String_Id;
|
|
C : Char_Code;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_No_Identifiers;
|
|
|
|
-- Two argument form
|
|
|
|
if Arg_Count = 2 then
|
|
Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
|
|
|
|
declare
|
|
E_Id : Node_Id;
|
|
E : Entity_Id;
|
|
|
|
begin
|
|
E_Id := Expression (Arg2);
|
|
Analyze (E_Id);
|
|
|
|
if not Is_Entity_Name (E_Id) then
|
|
Error_Pragma_Arg
|
|
("second argument of pragma% must be entity name",
|
|
Arg2);
|
|
end if;
|
|
|
|
E := Entity (E_Id);
|
|
|
|
if E = Any_Id then
|
|
return;
|
|
else
|
|
loop
|
|
Set_Suppress_Style_Checks (E,
|
|
(Chars (Expression (Arg1)) = Name_Off));
|
|
exit when No (Homonym (E));
|
|
E := Homonym (E);
|
|
end loop;
|
|
end if;
|
|
end;
|
|
|
|
-- One argument form
|
|
|
|
else
|
|
Check_Arg_Count (1);
|
|
|
|
if Nkind (A) = N_String_Literal then
|
|
S := Strval (A);
|
|
|
|
declare
|
|
Slen : constant Natural := Natural (String_Length (S));
|
|
Options : String (1 .. Slen);
|
|
J : Natural;
|
|
|
|
begin
|
|
J := 1;
|
|
loop
|
|
C := Get_String_Char (S, Int (J));
|
|
exit when not In_Character_Range (C);
|
|
Options (J) := Get_Character (C);
|
|
|
|
-- If at end of string, set options. As per discussion
|
|
-- above, no need to check for errors, since we issued
|
|
-- them in the parser.
|
|
|
|
if J = Slen then
|
|
Set_Style_Check_Options (Options);
|
|
exit;
|
|
end if;
|
|
|
|
J := J + 1;
|
|
end loop;
|
|
end;
|
|
|
|
elsif Nkind (A) = N_Identifier then
|
|
if Chars (A) = Name_All_Checks then
|
|
Set_Default_Style_Check_Options;
|
|
|
|
elsif Chars (A) = Name_On then
|
|
Style_Check := True;
|
|
|
|
elsif Chars (A) = Name_Off then
|
|
Style_Check := False;
|
|
end if;
|
|
end if;
|
|
end if;
|
|
end Style_Checks;
|
|
|
|
--------------
|
|
-- Subtitle --
|
|
--------------
|
|
|
|
-- pragma Subtitle ([Subtitle =>] STRING_LITERAL);
|
|
|
|
when Pragma_Subtitle =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_Subtitle);
|
|
Check_Arg_Is_String_Literal (Arg1);
|
|
|
|
--------------
|
|
-- Suppress --
|
|
--------------
|
|
|
|
-- pragma Suppress (IDENTIFIER [, [On =>] NAME]);
|
|
|
|
when Pragma_Suppress =>
|
|
Process_Suppress_Unsuppress (True);
|
|
|
|
------------------
|
|
-- Suppress_All --
|
|
------------------
|
|
|
|
-- pragma Suppress_All;
|
|
|
|
-- The only check made here is that the pragma appears in the proper
|
|
-- place, i.e. following a compilation unit. If indeed it appears in
|
|
-- this context, then the parser has already inserted an equivalent
|
|
-- pragma Suppress (All_Checks) to get the required effect.
|
|
|
|
when Pragma_Suppress_All =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
|
|
if Nkind (Parent (N)) /= N_Compilation_Unit_Aux
|
|
or else not Is_List_Member (N)
|
|
or else List_Containing (N) /= Pragmas_After (Parent (N))
|
|
then
|
|
Error_Pragma
|
|
("misplaced pragma%, must follow compilation unit");
|
|
end if;
|
|
|
|
-------------------------
|
|
-- Suppress_Debug_Info --
|
|
-------------------------
|
|
|
|
-- pragma Suppress_Debug_Info ([Entity =>] LOCAL_NAME);
|
|
|
|
when Pragma_Suppress_Debug_Info =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
Set_Debug_Info_Off (Entity (Get_Pragma_Arg (Arg1)));
|
|
|
|
----------------------------------
|
|
-- Suppress_Exception_Locations --
|
|
----------------------------------
|
|
|
|
-- pragma Suppress_Exception_Locations;
|
|
|
|
when Pragma_Suppress_Exception_Locations =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
Check_Valid_Configuration_Pragma;
|
|
Exception_Locations_Suppressed := True;
|
|
|
|
-----------------------------
|
|
-- Suppress_Initialization --
|
|
-----------------------------
|
|
|
|
-- pragma Suppress_Initialization ([Entity =>] type_Name);
|
|
|
|
when Pragma_Suppress_Initialization => Suppress_Init : declare
|
|
E_Id : Node_Id;
|
|
E : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
|
|
E_Id := Expression (Arg1);
|
|
|
|
if Etype (E_Id) = Any_Type then
|
|
return;
|
|
end if;
|
|
|
|
E := Entity (E_Id);
|
|
|
|
if Is_Type (E) then
|
|
if Is_Incomplete_Or_Private_Type (E) then
|
|
if No (Full_View (Base_Type (E))) then
|
|
Error_Pragma_Arg
|
|
("argument of pragma% cannot be an incomplete type",
|
|
Arg1);
|
|
else
|
|
Set_Suppress_Init_Proc (Full_View (Base_Type (E)));
|
|
end if;
|
|
else
|
|
Set_Suppress_Init_Proc (Base_Type (E));
|
|
end if;
|
|
|
|
else
|
|
Error_Pragma_Arg
|
|
("pragma% requires argument that is a type name", Arg1);
|
|
end if;
|
|
end Suppress_Init;
|
|
|
|
-----------------
|
|
-- System_Name --
|
|
-----------------
|
|
|
|
-- pragma System_Name (DIRECT_NAME);
|
|
|
|
-- Syntax check: one argument, which must be the identifier GNAT or
|
|
-- the identifier GCC, no other identifiers are acceptable.
|
|
|
|
when Pragma_System_Name =>
|
|
GNAT_Pragma;
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_One_Of (Arg1, Name_Gcc, Name_Gnat);
|
|
|
|
-----------------------------
|
|
-- Task_Dispatching_Policy --
|
|
-----------------------------
|
|
|
|
-- pragma Task_Dispatching_Policy (policy_IDENTIFIER);
|
|
|
|
when Pragma_Task_Dispatching_Policy => declare
|
|
DP : Character;
|
|
|
|
begin
|
|
Check_Ada_83_Warning;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_Arg_Is_Task_Dispatching_Policy (Arg1);
|
|
Check_Valid_Configuration_Pragma;
|
|
Get_Name_String (Chars (Expression (Arg1)));
|
|
DP := Fold_Upper (Name_Buffer (1));
|
|
|
|
if Task_Dispatching_Policy /= ' '
|
|
and then Task_Dispatching_Policy /= DP
|
|
then
|
|
Error_Msg_Sloc := Task_Dispatching_Policy_Sloc;
|
|
Error_Pragma
|
|
("task dispatching policy incompatible with policy#");
|
|
|
|
-- Set new policy, but always preserve System_Location since we
|
|
-- like the error message with the run time name.
|
|
|
|
else
|
|
Task_Dispatching_Policy := DP;
|
|
|
|
if Task_Dispatching_Policy_Sloc /= System_Location then
|
|
Task_Dispatching_Policy_Sloc := Loc;
|
|
end if;
|
|
end if;
|
|
end;
|
|
|
|
--------------
|
|
-- Task_Info --
|
|
--------------
|
|
|
|
-- pragma Task_Info (EXPRESSION);
|
|
|
|
when Pragma_Task_Info => Task_Info : declare
|
|
P : constant Node_Id := Parent (N);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
|
|
if Nkind (P) /= N_Task_Definition then
|
|
Error_Pragma ("pragma% must appear in task definition");
|
|
end if;
|
|
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
|
|
Analyze_And_Resolve (Expression (Arg1), RTE (RE_Task_Info_Type));
|
|
|
|
if Etype (Expression (Arg1)) = Any_Type then
|
|
return;
|
|
end if;
|
|
|
|
if Has_Task_Info_Pragma (P) then
|
|
Error_Pragma ("duplicate pragma% not allowed");
|
|
else
|
|
Set_Has_Task_Info_Pragma (P, True);
|
|
end if;
|
|
end Task_Info;
|
|
|
|
---------------
|
|
-- Task_Name --
|
|
---------------
|
|
|
|
-- pragma Task_Name (string_EXPRESSION);
|
|
|
|
when Pragma_Task_Name => Task_Name : declare
|
|
P : constant Node_Id := Parent (N);
|
|
Arg : Node_Id;
|
|
|
|
begin
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
|
|
Arg := Expression (Arg1);
|
|
|
|
-- The expression is used in the call to Create_Task, and must be
|
|
-- expanded there, not in the context of the current spec. It must
|
|
-- however be analyzed to capture global references, in case it
|
|
-- appears in a generic context.
|
|
|
|
Preanalyze_And_Resolve (Arg, Standard_String);
|
|
|
|
if Nkind (P) /= N_Task_Definition then
|
|
Pragma_Misplaced;
|
|
end if;
|
|
|
|
if Has_Task_Name_Pragma (P) then
|
|
Error_Pragma ("duplicate pragma% not allowed");
|
|
else
|
|
Set_Has_Task_Name_Pragma (P, True);
|
|
Record_Rep_Item (Defining_Identifier (Parent (P)), N);
|
|
end if;
|
|
end Task_Name;
|
|
|
|
------------------
|
|
-- Task_Storage --
|
|
------------------
|
|
|
|
-- pragma Task_Storage (
|
|
-- [Task_Type =>] LOCAL_NAME,
|
|
-- [Top_Guard =>] static_integer_EXPRESSION);
|
|
|
|
when Pragma_Task_Storage => Task_Storage : declare
|
|
Args : Args_List (1 .. 2);
|
|
Names : constant Name_List (1 .. 2) := (
|
|
Name_Task_Type,
|
|
Name_Top_Guard);
|
|
|
|
Task_Type : Node_Id renames Args (1);
|
|
Top_Guard : Node_Id renames Args (2);
|
|
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
|
|
if No (Task_Type) then
|
|
Error_Pragma
|
|
("missing task_type argument for pragma%");
|
|
end if;
|
|
|
|
Check_Arg_Is_Local_Name (Task_Type);
|
|
|
|
Ent := Entity (Task_Type);
|
|
|
|
if not Is_Task_Type (Ent) then
|
|
Error_Pragma_Arg
|
|
("argument for pragma% must be task type", Task_Type);
|
|
end if;
|
|
|
|
if No (Top_Guard) then
|
|
Error_Pragma_Arg
|
|
("pragma% takes two arguments", Task_Type);
|
|
else
|
|
Check_Arg_Is_Static_Expression (Top_Guard, Any_Integer);
|
|
end if;
|
|
|
|
Check_First_Subtype (Task_Type);
|
|
|
|
if Rep_Item_Too_Late (Ent, N) then
|
|
raise Pragma_Exit;
|
|
end if;
|
|
end Task_Storage;
|
|
|
|
--------------------------
|
|
-- Thread_Local_Storage --
|
|
--------------------------
|
|
|
|
-- pragma Thread_Local_Storage ([Entity =>] LOCAL_NAME);
|
|
|
|
when Pragma_Thread_Local_Storage => Thread_Local_Storage : declare
|
|
Id : Node_Id;
|
|
E : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Arg_Is_Library_Level_Local_Name (Arg1);
|
|
|
|
Id := Expression (Arg1);
|
|
Analyze (Id);
|
|
|
|
if not Is_Entity_Name (Id)
|
|
or else Ekind (Entity (Id)) /= E_Variable
|
|
then
|
|
Error_Pragma_Arg ("local variable name required", Arg1);
|
|
end if;
|
|
|
|
E := Entity (Id);
|
|
|
|
if Rep_Item_Too_Early (E, N)
|
|
or else Rep_Item_Too_Late (E, N)
|
|
then
|
|
raise Pragma_Exit;
|
|
end if;
|
|
|
|
Set_Has_Pragma_Thread_Local_Storage (E);
|
|
Set_Has_Gigi_Rep_Item (E);
|
|
end Thread_Local_Storage;
|
|
|
|
----------------
|
|
-- Time_Slice --
|
|
----------------
|
|
|
|
-- pragma Time_Slice (static_duration_EXPRESSION);
|
|
|
|
when Pragma_Time_Slice => Time_Slice : declare
|
|
Val : Ureal;
|
|
Nod : Node_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
Check_In_Main_Program;
|
|
Check_Arg_Is_Static_Expression (Arg1, Standard_Duration);
|
|
|
|
if not Error_Posted (Arg1) then
|
|
Nod := Next (N);
|
|
while Present (Nod) loop
|
|
if Nkind (Nod) = N_Pragma
|
|
and then Pragma_Name (Nod) = Name_Time_Slice
|
|
then
|
|
Error_Msg_Name_1 := Pname;
|
|
Error_Msg_N ("duplicate pragma% not permitted", Nod);
|
|
end if;
|
|
|
|
Next (Nod);
|
|
end loop;
|
|
end if;
|
|
|
|
-- Process only if in main unit
|
|
|
|
if Get_Source_Unit (Loc) = Main_Unit then
|
|
Opt.Time_Slice_Set := True;
|
|
Val := Expr_Value_R (Expression (Arg1));
|
|
|
|
if Val <= Ureal_0 then
|
|
Opt.Time_Slice_Value := 0;
|
|
|
|
elsif Val > UR_From_Uint (UI_From_Int (1000)) then
|
|
Opt.Time_Slice_Value := 1_000_000_000;
|
|
|
|
else
|
|
Opt.Time_Slice_Value :=
|
|
UI_To_Int (UR_To_Uint (Val * UI_From_Int (1_000_000)));
|
|
end if;
|
|
end if;
|
|
end Time_Slice;
|
|
|
|
-----------
|
|
-- Title --
|
|
-----------
|
|
|
|
-- pragma Title (TITLING_OPTION [, TITLING OPTION]);
|
|
|
|
-- TITLING_OPTION ::=
|
|
-- [Title =>] STRING_LITERAL
|
|
-- | [Subtitle =>] STRING_LITERAL
|
|
|
|
when Pragma_Title => Title : declare
|
|
Args : Args_List (1 .. 2);
|
|
Names : constant Name_List (1 .. 2) := (
|
|
Name_Title,
|
|
Name_Subtitle);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Gather_Associations (Names, Args);
|
|
|
|
for J in 1 .. 2 loop
|
|
if Present (Args (J)) then
|
|
Check_Arg_Is_String_Literal (Args (J));
|
|
end if;
|
|
end loop;
|
|
end Title;
|
|
|
|
---------------------
|
|
-- Unchecked_Union --
|
|
---------------------
|
|
|
|
-- pragma Unchecked_Union (first_subtype_LOCAL_NAME)
|
|
|
|
when Pragma_Unchecked_Union => Unchecked_Union : declare
|
|
Assoc : constant Node_Id := Arg1;
|
|
Type_Id : constant Node_Id := Expression (Assoc);
|
|
Typ : Entity_Id;
|
|
Discr : Entity_Id;
|
|
Tdef : Node_Id;
|
|
Clist : Node_Id;
|
|
Vpart : Node_Id;
|
|
Comp : Node_Id;
|
|
Variant : Node_Id;
|
|
|
|
begin
|
|
Ada_2005_Pragma;
|
|
Check_No_Identifiers;
|
|
Check_Arg_Count (1);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
|
|
Find_Type (Type_Id);
|
|
Typ := Entity (Type_Id);
|
|
|
|
if Typ = Any_Type
|
|
or else Rep_Item_Too_Early (Typ, N)
|
|
then
|
|
return;
|
|
else
|
|
Typ := Underlying_Type (Typ);
|
|
end if;
|
|
|
|
if Rep_Item_Too_Late (Typ, N) then
|
|
return;
|
|
end if;
|
|
|
|
Check_First_Subtype (Arg1);
|
|
|
|
-- Note remaining cases are references to a type in the current
|
|
-- declarative part. If we find an error, we post the error on
|
|
-- the relevant type declaration at an appropriate point.
|
|
|
|
if not Is_Record_Type (Typ) then
|
|
Error_Msg_N ("Unchecked_Union must be record type", Typ);
|
|
return;
|
|
|
|
elsif Is_Tagged_Type (Typ) then
|
|
Error_Msg_N ("Unchecked_Union must not be tagged", Typ);
|
|
return;
|
|
|
|
elsif Is_Limited_Type (Typ) then
|
|
Error_Msg_N
|
|
("Unchecked_Union must not be limited record type", Typ);
|
|
Explain_Limited_Type (Typ, Typ);
|
|
return;
|
|
|
|
else
|
|
if not Has_Discriminants (Typ) then
|
|
Error_Msg_N
|
|
("Unchecked_Union must have one discriminant", Typ);
|
|
return;
|
|
end if;
|
|
|
|
Discr := First_Discriminant (Typ);
|
|
while Present (Discr) loop
|
|
if No (Discriminant_Default_Value (Discr)) then
|
|
Error_Msg_N
|
|
("Unchecked_Union discriminant must have default value",
|
|
Discr);
|
|
end if;
|
|
Next_Discriminant (Discr);
|
|
end loop;
|
|
|
|
Tdef := Type_Definition (Declaration_Node (Typ));
|
|
Clist := Component_List (Tdef);
|
|
|
|
Comp := First (Component_Items (Clist));
|
|
while Present (Comp) loop
|
|
Check_Component (Comp);
|
|
Next (Comp);
|
|
end loop;
|
|
|
|
if No (Clist) or else No (Variant_Part (Clist)) then
|
|
Error_Msg_N
|
|
("Unchecked_Union must have variant part",
|
|
Tdef);
|
|
return;
|
|
end if;
|
|
|
|
Vpart := Variant_Part (Clist);
|
|
|
|
Variant := First (Variants (Vpart));
|
|
while Present (Variant) loop
|
|
Check_Variant (Variant);
|
|
Next (Variant);
|
|
end loop;
|
|
end if;
|
|
|
|
Set_Is_Unchecked_Union (Typ, True);
|
|
Set_Convention (Typ, Convention_C);
|
|
|
|
Set_Has_Unchecked_Union (Base_Type (Typ), True);
|
|
Set_Is_Unchecked_Union (Base_Type (Typ), True);
|
|
end Unchecked_Union;
|
|
|
|
------------------------
|
|
-- Unimplemented_Unit --
|
|
------------------------
|
|
|
|
-- pragma Unimplemented_Unit;
|
|
|
|
-- Note: this only gives an error if we are generating code, or if
|
|
-- we are in a generic library unit (where the pragma appears in the
|
|
-- body, not in the spec).
|
|
|
|
when Pragma_Unimplemented_Unit => Unimplemented_Unit : declare
|
|
Cunitent : constant Entity_Id :=
|
|
Cunit_Entity (Get_Source_Unit (Loc));
|
|
Ent_Kind : constant Entity_Kind :=
|
|
Ekind (Cunitent);
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
|
|
if Operating_Mode = Generate_Code
|
|
or else Ent_Kind = E_Generic_Function
|
|
or else Ent_Kind = E_Generic_Procedure
|
|
or else Ent_Kind = E_Generic_Package
|
|
then
|
|
Get_Name_String (Chars (Cunitent));
|
|
Set_Casing (Mixed_Case);
|
|
Write_Str (Name_Buffer (1 .. Name_Len));
|
|
Write_Str (" is not supported in this configuration");
|
|
Write_Eol;
|
|
raise Unrecoverable_Error;
|
|
end if;
|
|
end Unimplemented_Unit;
|
|
|
|
------------------------
|
|
-- Universal_Aliasing --
|
|
------------------------
|
|
|
|
-- pragma Universal_Aliasing [([Entity =>] type_LOCAL_NAME)];
|
|
|
|
when Pragma_Universal_Aliasing => Universal_Alias : declare
|
|
E_Id : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg2, Name_Entity);
|
|
Check_Arg_Is_Local_Name (Arg1);
|
|
E_Id := Entity (Expression (Arg1));
|
|
|
|
if E_Id = Any_Type then
|
|
return;
|
|
elsif No (E_Id) or else not Is_Type (E_Id) then
|
|
Error_Pragma_Arg ("pragma% requires type", Arg1);
|
|
end if;
|
|
|
|
Set_Universal_Aliasing (Implementation_Base_Type (E_Id));
|
|
end Universal_Alias;
|
|
|
|
--------------------
|
|
-- Universal_Data --
|
|
--------------------
|
|
|
|
-- pragma Universal_Data [(library_unit_NAME)];
|
|
|
|
when Pragma_Universal_Data =>
|
|
GNAT_Pragma;
|
|
|
|
-- If this is a configuration pragma, then set the universal
|
|
-- addressing option, otherwise confirm that the pragma satisfies
|
|
-- the requirements of library unit pragma placement and leave it
|
|
-- to the GNAAMP back end to detect the pragma (avoids transitive
|
|
-- setting of the option due to withed units).
|
|
|
|
if Is_Configuration_Pragma then
|
|
Universal_Addressing_On_AAMP := True;
|
|
else
|
|
Check_Valid_Library_Unit_Pragma;
|
|
end if;
|
|
|
|
if not AAMP_On_Target then
|
|
Error_Pragma ("?pragma% ignored (applies only to AAMP)");
|
|
end if;
|
|
|
|
----------------
|
|
-- Unmodified --
|
|
----------------
|
|
|
|
-- pragma Unmodified (local_Name {, local_Name});
|
|
|
|
when Pragma_Unmodified => Unmodified : declare
|
|
Arg_Node : Node_Id;
|
|
Arg_Expr : Node_Id;
|
|
Arg_Ent : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_At_Least_N_Arguments (1);
|
|
|
|
-- Loop through arguments
|
|
|
|
Arg_Node := Arg1;
|
|
while Present (Arg_Node) loop
|
|
Check_No_Identifier (Arg_Node);
|
|
|
|
-- Note: the analyze call done by Check_Arg_Is_Local_Name will
|
|
-- in fact generate reference, so that the entity will have a
|
|
-- reference, which will inhibit any warnings about it not
|
|
-- being referenced, and also properly show up in the ali file
|
|
-- as a reference. But this reference is recorded before the
|
|
-- Has_Pragma_Unreferenced flag is set, so that no warning is
|
|
-- generated for this reference.
|
|
|
|
Check_Arg_Is_Local_Name (Arg_Node);
|
|
Arg_Expr := Get_Pragma_Arg (Arg_Node);
|
|
|
|
if Is_Entity_Name (Arg_Expr) then
|
|
Arg_Ent := Entity (Arg_Expr);
|
|
|
|
if not Is_Assignable (Arg_Ent) then
|
|
Error_Pragma_Arg
|
|
("pragma% can only be applied to a variable",
|
|
Arg_Expr);
|
|
else
|
|
Set_Has_Pragma_Unmodified (Arg_Ent);
|
|
end if;
|
|
end if;
|
|
|
|
Next (Arg_Node);
|
|
end loop;
|
|
end Unmodified;
|
|
|
|
------------------
|
|
-- Unreferenced --
|
|
------------------
|
|
|
|
-- pragma Unreferenced (local_Name {, local_Name});
|
|
|
|
-- or when used in a context clause:
|
|
|
|
-- pragma Unreferenced (library_unit_NAME {, library_unit_NAME}
|
|
|
|
when Pragma_Unreferenced => Unreferenced : declare
|
|
Arg_Node : Node_Id;
|
|
Arg_Expr : Node_Id;
|
|
Arg_Ent : Entity_Id;
|
|
Citem : Node_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_At_Least_N_Arguments (1);
|
|
|
|
-- Check case of appearing within context clause
|
|
|
|
if Is_In_Context_Clause then
|
|
|
|
-- The arguments must all be units mentioned in a with clause
|
|
-- in the same context clause. Note we already checked (in
|
|
-- Par.Prag) that the arguments are either identifiers or
|
|
-- selected components.
|
|
|
|
Arg_Node := Arg1;
|
|
while Present (Arg_Node) loop
|
|
Citem := First (List_Containing (N));
|
|
while Citem /= N loop
|
|
if Nkind (Citem) = N_With_Clause
|
|
and then Same_Name (Name (Citem), Expression (Arg_Node))
|
|
then
|
|
Set_Has_Pragma_Unreferenced
|
|
(Cunit_Entity
|
|
(Get_Source_Unit
|
|
(Library_Unit (Citem))));
|
|
Set_Unit_Name (Expression (Arg_Node), Name (Citem));
|
|
exit;
|
|
end if;
|
|
|
|
Next (Citem);
|
|
end loop;
|
|
|
|
if Citem = N then
|
|
Error_Pragma_Arg
|
|
("argument of pragma% is not with'ed unit", Arg_Node);
|
|
end if;
|
|
|
|
Next (Arg_Node);
|
|
end loop;
|
|
|
|
-- Case of not in list of context items
|
|
|
|
else
|
|
Arg_Node := Arg1;
|
|
while Present (Arg_Node) loop
|
|
Check_No_Identifier (Arg_Node);
|
|
|
|
-- Note: the analyze call done by Check_Arg_Is_Local_Name
|
|
-- will in fact generate reference, so that the entity will
|
|
-- have a reference, which will inhibit any warnings about
|
|
-- it not being referenced, and also properly show up in the
|
|
-- ali file as a reference. But this reference is recorded
|
|
-- before the Has_Pragma_Unreferenced flag is set, so that
|
|
-- no warning is generated for this reference.
|
|
|
|
Check_Arg_Is_Local_Name (Arg_Node);
|
|
Arg_Expr := Get_Pragma_Arg (Arg_Node);
|
|
|
|
if Is_Entity_Name (Arg_Expr) then
|
|
Arg_Ent := Entity (Arg_Expr);
|
|
|
|
-- If the entity is overloaded, the pragma applies to the
|
|
-- most recent overloading, as documented. In this case,
|
|
-- name resolution does not generate a reference, so it
|
|
-- must be done here explicitly.
|
|
|
|
if Is_Overloaded (Arg_Expr) then
|
|
Generate_Reference (Arg_Ent, N);
|
|
end if;
|
|
|
|
Set_Has_Pragma_Unreferenced (Arg_Ent);
|
|
end if;
|
|
|
|
Next (Arg_Node);
|
|
end loop;
|
|
end if;
|
|
end Unreferenced;
|
|
|
|
--------------------------
|
|
-- Unreferenced_Objects --
|
|
--------------------------
|
|
|
|
-- pragma Unreferenced_Objects (local_Name {, local_Name});
|
|
|
|
when Pragma_Unreferenced_Objects => Unreferenced_Objects : declare
|
|
Arg_Node : Node_Id;
|
|
Arg_Expr : Node_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_At_Least_N_Arguments (1);
|
|
|
|
Arg_Node := Arg1;
|
|
while Present (Arg_Node) loop
|
|
Check_No_Identifier (Arg_Node);
|
|
Check_Arg_Is_Local_Name (Arg_Node);
|
|
Arg_Expr := Get_Pragma_Arg (Arg_Node);
|
|
|
|
if not Is_Entity_Name (Arg_Expr)
|
|
or else not Is_Type (Entity (Arg_Expr))
|
|
then
|
|
Error_Pragma_Arg
|
|
("argument for pragma% must be type or subtype", Arg_Node);
|
|
end if;
|
|
|
|
Set_Has_Pragma_Unreferenced_Objects (Entity (Arg_Expr));
|
|
Next (Arg_Node);
|
|
end loop;
|
|
end Unreferenced_Objects;
|
|
|
|
------------------------------
|
|
-- Unreserve_All_Interrupts --
|
|
------------------------------
|
|
|
|
-- pragma Unreserve_All_Interrupts;
|
|
|
|
when Pragma_Unreserve_All_Interrupts =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
|
|
if In_Extended_Main_Code_Unit (Main_Unit_Entity) then
|
|
Unreserve_All_Interrupts := True;
|
|
end if;
|
|
|
|
----------------
|
|
-- Unsuppress --
|
|
----------------
|
|
|
|
-- pragma Unsuppress (IDENTIFIER [, [On =>] NAME]);
|
|
|
|
when Pragma_Unsuppress =>
|
|
Ada_2005_Pragma;
|
|
Process_Suppress_Unsuppress (False);
|
|
|
|
-------------------
|
|
-- Use_VADS_Size --
|
|
-------------------
|
|
|
|
-- pragma Use_VADS_Size;
|
|
|
|
when Pragma_Use_VADS_Size =>
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (0);
|
|
Check_Valid_Configuration_Pragma;
|
|
Use_VADS_Size := True;
|
|
|
|
---------------------
|
|
-- Validity_Checks --
|
|
---------------------
|
|
|
|
-- pragma Validity_Checks (On | Off | ALL_CHECKS | STRING_LITERAL);
|
|
|
|
when Pragma_Validity_Checks => Validity_Checks : declare
|
|
A : constant Node_Id := Expression (Arg1);
|
|
S : String_Id;
|
|
C : Char_Code;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_No_Identifiers;
|
|
|
|
if Nkind (A) = N_String_Literal then
|
|
S := Strval (A);
|
|
|
|
declare
|
|
Slen : constant Natural := Natural (String_Length (S));
|
|
Options : String (1 .. Slen);
|
|
J : Natural;
|
|
|
|
begin
|
|
J := 1;
|
|
loop
|
|
C := Get_String_Char (S, Int (J));
|
|
exit when not In_Character_Range (C);
|
|
Options (J) := Get_Character (C);
|
|
|
|
if J = Slen then
|
|
Set_Validity_Check_Options (Options);
|
|
exit;
|
|
else
|
|
J := J + 1;
|
|
end if;
|
|
end loop;
|
|
end;
|
|
|
|
elsif Nkind (A) = N_Identifier then
|
|
|
|
if Chars (A) = Name_All_Checks then
|
|
Set_Validity_Check_Options ("a");
|
|
|
|
elsif Chars (A) = Name_On then
|
|
Validity_Checks_On := True;
|
|
|
|
elsif Chars (A) = Name_Off then
|
|
Validity_Checks_On := False;
|
|
|
|
end if;
|
|
end if;
|
|
end Validity_Checks;
|
|
|
|
--------------
|
|
-- Volatile --
|
|
--------------
|
|
|
|
-- pragma Volatile (LOCAL_NAME);
|
|
|
|
when Pragma_Volatile =>
|
|
Process_Atomic_Shared_Volatile;
|
|
|
|
-------------------------
|
|
-- Volatile_Components --
|
|
-------------------------
|
|
|
|
-- pragma Volatile_Components (array_LOCAL_NAME);
|
|
|
|
-- Volatile is handled by the same circuit as Atomic_Components
|
|
|
|
--------------
|
|
-- Warnings --
|
|
--------------
|
|
|
|
-- pragma Warnings (On | Off);
|
|
-- pragma Warnings (On | Off, LOCAL_NAME);
|
|
-- pragma Warnings (static_string_EXPRESSION);
|
|
-- pragma Warnings (On | Off, STRING_LITERAL);
|
|
|
|
when Pragma_Warnings => Warnings : begin
|
|
GNAT_Pragma;
|
|
Check_At_Least_N_Arguments (1);
|
|
Check_No_Identifiers;
|
|
|
|
-- If debug flag -gnatd.i is set, pragma is ignored
|
|
|
|
if Debug_Flag_Dot_I then
|
|
return;
|
|
end if;
|
|
|
|
-- Process various forms of the pragma
|
|
|
|
declare
|
|
Argx : constant Node_Id := Get_Pragma_Arg (Arg1);
|
|
|
|
begin
|
|
-- One argument case
|
|
|
|
if Arg_Count = 1 then
|
|
|
|
-- On/Off one argument case was processed by parser
|
|
|
|
if Nkind (Argx) = N_Identifier
|
|
and then
|
|
(Chars (Argx) = Name_On
|
|
or else
|
|
Chars (Argx) = Name_Off)
|
|
then
|
|
null;
|
|
|
|
-- One argument case must be ON/OFF or static string expr
|
|
|
|
elsif not Is_Static_String_Expression (Arg1) then
|
|
Error_Pragma_Arg
|
|
("argument of pragma% must be On/Off or " &
|
|
"static string expression", Arg2);
|
|
|
|
-- One argument string expression case
|
|
|
|
else
|
|
declare
|
|
Lit : constant Node_Id := Expr_Value_S (Argx);
|
|
Str : constant String_Id := Strval (Lit);
|
|
Len : constant Nat := String_Length (Str);
|
|
C : Char_Code;
|
|
J : Nat;
|
|
OK : Boolean;
|
|
Chr : Character;
|
|
|
|
begin
|
|
J := 1;
|
|
while J <= Len loop
|
|
C := Get_String_Char (Str, J);
|
|
OK := In_Character_Range (C);
|
|
|
|
if OK then
|
|
Chr := Get_Character (C);
|
|
|
|
-- Dot case
|
|
|
|
if J < Len and then Chr = '.' then
|
|
J := J + 1;
|
|
C := Get_String_Char (Str, J);
|
|
Chr := Get_Character (C);
|
|
|
|
if not Set_Dot_Warning_Switch (Chr) then
|
|
Error_Pragma_Arg
|
|
("invalid warning switch character " &
|
|
'.' & Chr, Arg1);
|
|
end if;
|
|
|
|
-- Non-Dot case
|
|
|
|
else
|
|
OK := Set_Warning_Switch (Chr);
|
|
end if;
|
|
end if;
|
|
|
|
if not OK then
|
|
Error_Pragma_Arg
|
|
("invalid warning switch character " & Chr,
|
|
Arg1);
|
|
end if;
|
|
|
|
J := J + 1;
|
|
end loop;
|
|
end;
|
|
end if;
|
|
|
|
-- Two or more arguments (must be two)
|
|
|
|
else
|
|
Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
|
|
Check_At_Most_N_Arguments (2);
|
|
|
|
declare
|
|
E_Id : Node_Id;
|
|
E : Entity_Id;
|
|
Err : Boolean;
|
|
|
|
begin
|
|
E_Id := Expression (Arg2);
|
|
Analyze (E_Id);
|
|
|
|
-- In the expansion of an inlined body, a reference to
|
|
-- the formal may be wrapped in a conversion if the
|
|
-- actual is a conversion. Retrieve the real entity name.
|
|
|
|
if (In_Instance_Body
|
|
or else In_Inlined_Body)
|
|
and then Nkind (E_Id) = N_Unchecked_Type_Conversion
|
|
then
|
|
E_Id := Expression (E_Id);
|
|
end if;
|
|
|
|
-- Entity name case
|
|
|
|
if Is_Entity_Name (E_Id) then
|
|
E := Entity (E_Id);
|
|
|
|
if E = Any_Id then
|
|
return;
|
|
else
|
|
loop
|
|
Set_Warnings_Off
|
|
(E, (Chars (Expression (Arg1)) = Name_Off));
|
|
|
|
if Chars (Expression (Arg1)) = Name_Off
|
|
and then Warn_On_Warnings_Off
|
|
then
|
|
Warnings_Off_Pragmas.Append ((N, E));
|
|
end if;
|
|
|
|
if Is_Enumeration_Type (E) then
|
|
declare
|
|
Lit : Entity_Id;
|
|
begin
|
|
Lit := First_Literal (E);
|
|
while Present (Lit) loop
|
|
Set_Warnings_Off (Lit);
|
|
Next_Literal (Lit);
|
|
end loop;
|
|
end;
|
|
end if;
|
|
|
|
exit when No (Homonym (E));
|
|
E := Homonym (E);
|
|
end loop;
|
|
end if;
|
|
|
|
-- Error if not entity or static string literal case
|
|
|
|
elsif not Is_Static_String_Expression (Arg2) then
|
|
Error_Pragma_Arg
|
|
("second argument of pragma% must be entity " &
|
|
"name or static string expression", Arg2);
|
|
|
|
-- String literal case
|
|
|
|
else
|
|
String_To_Name_Buffer
|
|
(Strval (Expr_Value_S (Expression (Arg2))));
|
|
|
|
-- Note on configuration pragma case: If this is a
|
|
-- configuration pragma, then for an OFF pragma, we
|
|
-- just set Config True in the call, which is all
|
|
-- that needs to be done. For the case of ON, this
|
|
-- is normally an error, unless it is canceling the
|
|
-- effect of a previous OFF pragma in the same file.
|
|
-- In any other case, an error will be signalled (ON
|
|
-- with no matching OFF).
|
|
|
|
if Chars (Argx) = Name_Off then
|
|
Set_Specific_Warning_Off
|
|
(Loc, Name_Buffer (1 .. Name_Len),
|
|
Config => Is_Configuration_Pragma);
|
|
|
|
elsif Chars (Argx) = Name_On then
|
|
Set_Specific_Warning_On
|
|
(Loc, Name_Buffer (1 .. Name_Len), Err);
|
|
|
|
if Err then
|
|
Error_Msg
|
|
("?pragma Warnings On with no " &
|
|
"matching Warnings Off",
|
|
Loc);
|
|
end if;
|
|
end if;
|
|
end if;
|
|
end;
|
|
end if;
|
|
end;
|
|
end Warnings;
|
|
|
|
-------------------
|
|
-- Weak_External --
|
|
-------------------
|
|
|
|
-- pragma Weak_External ([Entity =>] LOCAL_NAME);
|
|
|
|
when Pragma_Weak_External => Weak_External : declare
|
|
Ent : Entity_Id;
|
|
|
|
begin
|
|
GNAT_Pragma;
|
|
Check_Arg_Count (1);
|
|
Check_Optional_Identifier (Arg1, Name_Entity);
|
|
Check_Arg_Is_Library_Level_Local_Name (Arg1);
|
|
Ent := Entity (Expression (Arg1));
|
|
|
|
if Rep_Item_Too_Early (Ent, N) then
|
|
return;
|
|
else
|
|
Ent := Underlying_Type (Ent);
|
|
end if;
|
|
|
|
-- The only processing required is to link this item on to the
|
|
-- list of rep items for the given entity. This is accomplished
|
|
-- by the call to Rep_Item_Too_Late (when no error is detected
|
|
-- and False is returned).
|
|
|
|
if Rep_Item_Too_Late (Ent, N) then
|
|
return;
|
|
else
|
|
Set_Has_Gigi_Rep_Item (Ent);
|
|
end if;
|
|
end Weak_External;
|
|
|
|
-----------------------------
|
|
-- Wide_Character_Encoding --
|
|
-----------------------------
|
|
|
|
-- pragma Wide_Character_Encoding (IDENTIFIER);
|
|
|
|
when Pragma_Wide_Character_Encoding =>
|
|
GNAT_Pragma;
|
|
|
|
-- Nothing to do, handled in parser. Note that we do not enforce
|
|
-- configuration pragma placement, this pragma can appear at any
|
|
-- place in the source, allowing mixed encodings within a single
|
|
-- source program.
|
|
|
|
null;
|
|
|
|
--------------------
|
|
-- Unknown_Pragma --
|
|
--------------------
|
|
|
|
-- Should be impossible, since the case of an unknown pragma is
|
|
-- separately processed before the case statement is entered.
|
|
|
|
when Unknown_Pragma =>
|
|
raise Program_Error;
|
|
end case;
|
|
|
|
exception
|
|
when Pragma_Exit => null;
|
|
end Analyze_Pragma;
|
|
|
|
-------------------
|
|
-- Check_Enabled --
|
|
-------------------
|
|
|
|
function Check_Enabled (Nam : Name_Id) return Boolean is
|
|
PP : Node_Id;
|
|
|
|
begin
|
|
PP := Opt.Check_Policy_List;
|
|
loop
|
|
if No (PP) then
|
|
return Assertions_Enabled;
|
|
|
|
elsif
|
|
Nam = Chars (Expression (First (Pragma_Argument_Associations (PP))))
|
|
then
|
|
case
|
|
Chars (Expression (Last (Pragma_Argument_Associations (PP))))
|
|
is
|
|
when Name_On | Name_Check =>
|
|
return True;
|
|
when Name_Off | Name_Ignore =>
|
|
return False;
|
|
when others =>
|
|
raise Program_Error;
|
|
end case;
|
|
|
|
else
|
|
PP := Next_Pragma (PP);
|
|
end if;
|
|
end loop;
|
|
end Check_Enabled;
|
|
|
|
---------------------------------
|
|
-- Delay_Config_Pragma_Analyze --
|
|
---------------------------------
|
|
|
|
function Delay_Config_Pragma_Analyze (N : Node_Id) return Boolean is
|
|
begin
|
|
return Pragma_Name (N) = Name_Interrupt_State
|
|
or else
|
|
Pragma_Name (N) = Name_Priority_Specific_Dispatching;
|
|
end Delay_Config_Pragma_Analyze;
|
|
|
|
-------------------------
|
|
-- Get_Base_Subprogram --
|
|
-------------------------
|
|
|
|
function Get_Base_Subprogram (Def_Id : Entity_Id) return Entity_Id is
|
|
Result : Entity_Id;
|
|
|
|
begin
|
|
-- Follow subprogram renaming chain
|
|
|
|
Result := Def_Id;
|
|
while Is_Subprogram (Result)
|
|
and then
|
|
(Is_Generic_Instance (Result)
|
|
or else Nkind (Parent (Declaration_Node (Result))) =
|
|
N_Subprogram_Renaming_Declaration)
|
|
and then Present (Alias (Result))
|
|
loop
|
|
Result := Alias (Result);
|
|
end loop;
|
|
|
|
return Result;
|
|
end Get_Base_Subprogram;
|
|
|
|
--------------------
|
|
-- Get_Pragma_Arg --
|
|
--------------------
|
|
|
|
function Get_Pragma_Arg (Arg : Node_Id) return Node_Id is
|
|
begin
|
|
if Nkind (Arg) = N_Pragma_Argument_Association then
|
|
return Expression (Arg);
|
|
else
|
|
return Arg;
|
|
end if;
|
|
end Get_Pragma_Arg;
|
|
|
|
----------------
|
|
-- Initialize --
|
|
----------------
|
|
|
|
procedure Initialize is
|
|
begin
|
|
Externals.Init;
|
|
end Initialize;
|
|
|
|
-----------------------------
|
|
-- Is_Config_Static_String --
|
|
-----------------------------
|
|
|
|
function Is_Config_Static_String (Arg : Node_Id) return Boolean is
|
|
|
|
function Add_Config_Static_String (Arg : Node_Id) return Boolean;
|
|
-- This is an internal recursive function that is just like the outer
|
|
-- function except that it adds the string to the name buffer rather
|
|
-- than placing the string in the name buffer.
|
|
|
|
------------------------------
|
|
-- Add_Config_Static_String --
|
|
------------------------------
|
|
|
|
function Add_Config_Static_String (Arg : Node_Id) return Boolean is
|
|
N : Node_Id;
|
|
C : Char_Code;
|
|
|
|
begin
|
|
N := Arg;
|
|
|
|
if Nkind (N) = N_Op_Concat then
|
|
if Add_Config_Static_String (Left_Opnd (N)) then
|
|
N := Right_Opnd (N);
|
|
else
|
|
return False;
|
|
end if;
|
|
end if;
|
|
|
|
if Nkind (N) /= N_String_Literal then
|
|
Error_Msg_N ("string literal expected for pragma argument", N);
|
|
return False;
|
|
|
|
else
|
|
for J in 1 .. String_Length (Strval (N)) loop
|
|
C := Get_String_Char (Strval (N), J);
|
|
|
|
if not In_Character_Range (C) then
|
|
Error_Msg
|
|
("string literal contains invalid wide character",
|
|
Sloc (N) + 1 + Source_Ptr (J));
|
|
return False;
|
|
end if;
|
|
|
|
Add_Char_To_Name_Buffer (Get_Character (C));
|
|
end loop;
|
|
end if;
|
|
|
|
return True;
|
|
end Add_Config_Static_String;
|
|
|
|
-- Start of processing for Is_Config_Static_String
|
|
|
|
begin
|
|
|
|
Name_Len := 0;
|
|
return Add_Config_Static_String (Arg);
|
|
end Is_Config_Static_String;
|
|
|
|
-----------------------------------------
|
|
-- Is_Non_Significant_Pragma_Reference --
|
|
-----------------------------------------
|
|
|
|
-- This function makes use of the following static table which indicates
|
|
-- whether a given pragma is significant.
|
|
|
|
-- -1 indicates that references in any argument position are significant
|
|
-- 0 indicates that appearence in any argument is not significant
|
|
-- +n indicates that appearence as argument n is significant, but all
|
|
-- other arguments are not significant
|
|
-- 99 special processing required (e.g. for pragma Check)
|
|
|
|
Sig_Flags : constant array (Pragma_Id) of Int :=
|
|
(Pragma_AST_Entry => -1,
|
|
Pragma_Abort_Defer => -1,
|
|
Pragma_Ada_83 => -1,
|
|
Pragma_Ada_95 => -1,
|
|
Pragma_Ada_05 => -1,
|
|
Pragma_Ada_2005 => -1,
|
|
Pragma_All_Calls_Remote => -1,
|
|
Pragma_Annotate => -1,
|
|
Pragma_Assert => -1,
|
|
Pragma_Assertion_Policy => 0,
|
|
Pragma_Assume_No_Invalid_Values => 0,
|
|
Pragma_Asynchronous => -1,
|
|
Pragma_Atomic => 0,
|
|
Pragma_Atomic_Components => 0,
|
|
Pragma_Attach_Handler => -1,
|
|
Pragma_Check => 99,
|
|
Pragma_Check_Name => 0,
|
|
Pragma_Check_Policy => 0,
|
|
Pragma_CIL_Constructor => -1,
|
|
Pragma_CPP_Class => 0,
|
|
Pragma_CPP_Constructor => 0,
|
|
Pragma_CPP_Virtual => 0,
|
|
Pragma_CPP_Vtable => 0,
|
|
Pragma_C_Pass_By_Copy => 0,
|
|
Pragma_Comment => 0,
|
|
Pragma_Common_Object => -1,
|
|
Pragma_Compile_Time_Error => -1,
|
|
Pragma_Compile_Time_Warning => -1,
|
|
Pragma_Compiler_Unit => 0,
|
|
Pragma_Complete_Representation => 0,
|
|
Pragma_Complex_Representation => 0,
|
|
Pragma_Component_Alignment => -1,
|
|
Pragma_Controlled => 0,
|
|
Pragma_Convention => 0,
|
|
Pragma_Convention_Identifier => 0,
|
|
Pragma_Debug => -1,
|
|
Pragma_Debug_Policy => 0,
|
|
Pragma_Detect_Blocking => -1,
|
|
Pragma_Dimension => -1,
|
|
Pragma_Discard_Names => 0,
|
|
Pragma_Elaborate => -1,
|
|
Pragma_Elaborate_All => -1,
|
|
Pragma_Elaborate_Body => -1,
|
|
Pragma_Elaboration_Checks => -1,
|
|
Pragma_Eliminate => -1,
|
|
Pragma_Export => -1,
|
|
Pragma_Export_Exception => -1,
|
|
Pragma_Export_Function => -1,
|
|
Pragma_Export_Object => -1,
|
|
Pragma_Export_Procedure => -1,
|
|
Pragma_Export_Value => -1,
|
|
Pragma_Export_Valued_Procedure => -1,
|
|
Pragma_Extend_System => -1,
|
|
Pragma_Extensions_Allowed => -1,
|
|
Pragma_External => -1,
|
|
Pragma_Favor_Top_Level => -1,
|
|
Pragma_External_Name_Casing => -1,
|
|
Pragma_Fast_Math => -1,
|
|
Pragma_Finalize_Storage_Only => 0,
|
|
Pragma_Float_Representation => 0,
|
|
Pragma_Ident => -1,
|
|
Pragma_Implemented_By_Entry => -1,
|
|
Pragma_Implicit_Packing => 0,
|
|
Pragma_Import => +2,
|
|
Pragma_Import_Exception => 0,
|
|
Pragma_Import_Function => 0,
|
|
Pragma_Import_Object => 0,
|
|
Pragma_Import_Procedure => 0,
|
|
Pragma_Import_Valued_Procedure => 0,
|
|
Pragma_Initialize_Scalars => -1,
|
|
Pragma_Inline => 0,
|
|
Pragma_Inline_Always => 0,
|
|
Pragma_Inline_Generic => 0,
|
|
Pragma_Inspection_Point => -1,
|
|
Pragma_Interface => +2,
|
|
Pragma_Interface_Name => +2,
|
|
Pragma_Interrupt_Handler => -1,
|
|
Pragma_Interrupt_Priority => -1,
|
|
Pragma_Interrupt_State => -1,
|
|
Pragma_Java_Constructor => -1,
|
|
Pragma_Java_Interface => -1,
|
|
Pragma_Keep_Names => 0,
|
|
Pragma_License => -1,
|
|
Pragma_Link_With => -1,
|
|
Pragma_Linker_Alias => -1,
|
|
Pragma_Linker_Constructor => -1,
|
|
Pragma_Linker_Destructor => -1,
|
|
Pragma_Linker_Options => -1,
|
|
Pragma_Linker_Section => -1,
|
|
Pragma_List => -1,
|
|
Pragma_Locking_Policy => -1,
|
|
Pragma_Long_Float => -1,
|
|
Pragma_Machine_Attribute => -1,
|
|
Pragma_Main => -1,
|
|
Pragma_Main_Storage => -1,
|
|
Pragma_Memory_Size => -1,
|
|
Pragma_No_Return => 0,
|
|
Pragma_No_Body => 0,
|
|
Pragma_No_Run_Time => -1,
|
|
Pragma_No_Strict_Aliasing => -1,
|
|
Pragma_Normalize_Scalars => -1,
|
|
Pragma_Obsolescent => 0,
|
|
Pragma_Optimize => -1,
|
|
Pragma_Optimize_Alignment => -1,
|
|
Pragma_Pack => 0,
|
|
Pragma_Page => -1,
|
|
Pragma_Passive => -1,
|
|
Pragma_Preelaborable_Initialization => -1,
|
|
Pragma_Polling => -1,
|
|
Pragma_Persistent_BSS => 0,
|
|
Pragma_Postcondition => -1,
|
|
Pragma_Precondition => -1,
|
|
Pragma_Preelaborate => -1,
|
|
Pragma_Preelaborate_05 => -1,
|
|
Pragma_Priority => -1,
|
|
Pragma_Priority_Specific_Dispatching => -1,
|
|
Pragma_Profile => 0,
|
|
Pragma_Profile_Warnings => 0,
|
|
Pragma_Propagate_Exceptions => -1,
|
|
Pragma_Psect_Object => -1,
|
|
Pragma_Pure => -1,
|
|
Pragma_Pure_05 => -1,
|
|
Pragma_Pure_Function => -1,
|
|
Pragma_Queuing_Policy => -1,
|
|
Pragma_Ravenscar => -1,
|
|
Pragma_Relative_Deadline => -1,
|
|
Pragma_Remote_Call_Interface => -1,
|
|
Pragma_Remote_Types => -1,
|
|
Pragma_Restricted_Run_Time => -1,
|
|
Pragma_Restriction_Warnings => -1,
|
|
Pragma_Restrictions => -1,
|
|
Pragma_Reviewable => -1,
|
|
Pragma_Short_Circuit_And_Or => -1,
|
|
Pragma_Share_Generic => -1,
|
|
Pragma_Shared => -1,
|
|
Pragma_Shared_Passive => -1,
|
|
Pragma_Source_File_Name => -1,
|
|
Pragma_Source_File_Name_Project => -1,
|
|
Pragma_Source_Reference => -1,
|
|
Pragma_Storage_Size => -1,
|
|
Pragma_Storage_Unit => -1,
|
|
Pragma_Static_Elaboration_Desired => -1,
|
|
Pragma_Stream_Convert => -1,
|
|
Pragma_Style_Checks => -1,
|
|
Pragma_Subtitle => -1,
|
|
Pragma_Suppress => 0,
|
|
Pragma_Suppress_Exception_Locations => 0,
|
|
Pragma_Suppress_All => -1,
|
|
Pragma_Suppress_Debug_Info => 0,
|
|
Pragma_Suppress_Initialization => 0,
|
|
Pragma_System_Name => -1,
|
|
Pragma_Task_Dispatching_Policy => -1,
|
|
Pragma_Task_Info => -1,
|
|
Pragma_Task_Name => -1,
|
|
Pragma_Task_Storage => 0,
|
|
Pragma_Thread_Local_Storage => 0,
|
|
Pragma_Time_Slice => -1,
|
|
Pragma_Title => -1,
|
|
Pragma_Unchecked_Union => 0,
|
|
Pragma_Unimplemented_Unit => -1,
|
|
Pragma_Universal_Aliasing => -1,
|
|
Pragma_Universal_Data => -1,
|
|
Pragma_Unmodified => -1,
|
|
Pragma_Unreferenced => -1,
|
|
Pragma_Unreferenced_Objects => -1,
|
|
Pragma_Unreserve_All_Interrupts => -1,
|
|
Pragma_Unsuppress => 0,
|
|
Pragma_Use_VADS_Size => -1,
|
|
Pragma_Validity_Checks => -1,
|
|
Pragma_Volatile => 0,
|
|
Pragma_Volatile_Components => 0,
|
|
Pragma_Warnings => -1,
|
|
Pragma_Weak_External => -1,
|
|
Pragma_Wide_Character_Encoding => 0,
|
|
Unknown_Pragma => 0);
|
|
|
|
function Is_Non_Significant_Pragma_Reference (N : Node_Id) return Boolean is
|
|
Id : Pragma_Id;
|
|
P : Node_Id;
|
|
C : Int;
|
|
A : Node_Id;
|
|
|
|
begin
|
|
P := Parent (N);
|
|
|
|
if Nkind (P) /= N_Pragma_Argument_Association then
|
|
return False;
|
|
|
|
else
|
|
Id := Get_Pragma_Id (Parent (P));
|
|
C := Sig_Flags (Id);
|
|
|
|
case C is
|
|
when -1 =>
|
|
return False;
|
|
|
|
when 0 =>
|
|
return True;
|
|
|
|
when 99 =>
|
|
case Id is
|
|
|
|
-- For pragma Check, the first argument is not significant,
|
|
-- the second and the third (if present) arguments are
|
|
-- significant.
|
|
|
|
when Pragma_Check =>
|
|
return
|
|
P = First (Pragma_Argument_Associations (Parent (P)));
|
|
|
|
when others =>
|
|
raise Program_Error;
|
|
end case;
|
|
|
|
when others =>
|
|
A := First (Pragma_Argument_Associations (Parent (P)));
|
|
for J in 1 .. C - 1 loop
|
|
if No (A) then
|
|
return False;
|
|
end if;
|
|
|
|
Next (A);
|
|
end loop;
|
|
|
|
return A = P; -- is this wrong way round ???
|
|
end case;
|
|
end if;
|
|
end Is_Non_Significant_Pragma_Reference;
|
|
|
|
------------------------------
|
|
-- Is_Pragma_String_Literal --
|
|
------------------------------
|
|
|
|
-- This function returns true if the corresponding pragma argument is a
|
|
-- static string expression. These are the only cases in which string
|
|
-- literals can appear as pragma arguments. We also allow a string literal
|
|
-- as the first argument to pragma Assert (although it will of course
|
|
-- always generate a type error).
|
|
|
|
function Is_Pragma_String_Literal (Par : Node_Id) return Boolean is
|
|
Pragn : constant Node_Id := Parent (Par);
|
|
Assoc : constant List_Id := Pragma_Argument_Associations (Pragn);
|
|
Pname : constant Name_Id := Pragma_Name (Pragn);
|
|
Argn : Natural;
|
|
N : Node_Id;
|
|
|
|
begin
|
|
Argn := 1;
|
|
N := First (Assoc);
|
|
loop
|
|
exit when N = Par;
|
|
Argn := Argn + 1;
|
|
Next (N);
|
|
end loop;
|
|
|
|
if Pname = Name_Assert then
|
|
return True;
|
|
|
|
elsif Pname = Name_Export then
|
|
return Argn > 2;
|
|
|
|
elsif Pname = Name_Ident then
|
|
return Argn = 1;
|
|
|
|
elsif Pname = Name_Import then
|
|
return Argn > 2;
|
|
|
|
elsif Pname = Name_Interface_Name then
|
|
return Argn > 1;
|
|
|
|
elsif Pname = Name_Linker_Alias then
|
|
return Argn = 2;
|
|
|
|
elsif Pname = Name_Linker_Section then
|
|
return Argn = 2;
|
|
|
|
elsif Pname = Name_Machine_Attribute then
|
|
return Argn = 2;
|
|
|
|
elsif Pname = Name_Source_File_Name then
|
|
return True;
|
|
|
|
elsif Pname = Name_Source_Reference then
|
|
return Argn = 2;
|
|
|
|
elsif Pname = Name_Title then
|
|
return True;
|
|
|
|
elsif Pname = Name_Subtitle then
|
|
return True;
|
|
|
|
else
|
|
return False;
|
|
end if;
|
|
end Is_Pragma_String_Literal;
|
|
|
|
--------------------------------------
|
|
-- Process_Compilation_Unit_Pragmas --
|
|
--------------------------------------
|
|
|
|
procedure Process_Compilation_Unit_Pragmas (N : Node_Id) is
|
|
begin
|
|
-- A special check for pragma Suppress_All, a very strange DEC pragma,
|
|
-- strange because it comes at the end of the unit. If we have a pragma
|
|
-- Suppress_All in the Pragmas_After of the current unit, then we insert
|
|
-- a pragma Suppress (All_Checks) at the start of the context clause to
|
|
-- ensure the correct processing.
|
|
|
|
declare
|
|
PA : constant List_Id := Pragmas_After (Aux_Decls_Node (N));
|
|
P : Node_Id;
|
|
|
|
begin
|
|
if Present (PA) then
|
|
P := First (PA);
|
|
while Present (P) loop
|
|
if Pragma_Name (P) = Name_Suppress_All then
|
|
Prepend_To (Context_Items (N),
|
|
Make_Pragma (Sloc (P),
|
|
Chars => Name_Suppress,
|
|
Pragma_Argument_Associations => New_List (
|
|
Make_Pragma_Argument_Association (Sloc (P),
|
|
Expression =>
|
|
Make_Identifier (Sloc (P),
|
|
Chars => Name_All_Checks)))));
|
|
exit;
|
|
end if;
|
|
|
|
Next (P);
|
|
end loop;
|
|
end if;
|
|
end;
|
|
end Process_Compilation_Unit_Pragmas;
|
|
|
|
--------
|
|
-- rv --
|
|
--------
|
|
|
|
procedure rv is
|
|
begin
|
|
null;
|
|
end rv;
|
|
|
|
--------------------------------
|
|
-- Set_Encoded_Interface_Name --
|
|
--------------------------------
|
|
|
|
procedure Set_Encoded_Interface_Name (E : Entity_Id; S : Node_Id) is
|
|
Str : constant String_Id := Strval (S);
|
|
Len : constant Int := String_Length (Str);
|
|
CC : Char_Code;
|
|
C : Character;
|
|
J : Int;
|
|
|
|
Hex : constant array (0 .. 15) of Character := "0123456789abcdef";
|
|
|
|
procedure Encode;
|
|
-- Stores encoded value of character code CC. The encoding we use an
|
|
-- underscore followed by four lower case hex digits.
|
|
|
|
------------
|
|
-- Encode --
|
|
------------
|
|
|
|
procedure Encode is
|
|
begin
|
|
Store_String_Char (Get_Char_Code ('_'));
|
|
Store_String_Char
|
|
(Get_Char_Code (Hex (Integer (CC / 2 ** 12))));
|
|
Store_String_Char
|
|
(Get_Char_Code (Hex (Integer (CC / 2 ** 8 and 16#0F#))));
|
|
Store_String_Char
|
|
(Get_Char_Code (Hex (Integer (CC / 2 ** 4 and 16#0F#))));
|
|
Store_String_Char
|
|
(Get_Char_Code (Hex (Integer (CC and 16#0F#))));
|
|
end Encode;
|
|
|
|
-- Start of processing for Set_Encoded_Interface_Name
|
|
|
|
begin
|
|
-- If first character is asterisk, this is a link name, and we leave it
|
|
-- completely unmodified. We also ignore null strings (the latter case
|
|
-- happens only in error cases) and no encoding should occur for Java or
|
|
-- AAMP interface names.
|
|
|
|
if Len = 0
|
|
or else Get_String_Char (Str, 1) = Get_Char_Code ('*')
|
|
or else VM_Target /= No_VM
|
|
or else AAMP_On_Target
|
|
then
|
|
Set_Interface_Name (E, S);
|
|
|
|
else
|
|
J := 1;
|
|
loop
|
|
CC := Get_String_Char (Str, J);
|
|
|
|
exit when not In_Character_Range (CC);
|
|
|
|
C := Get_Character (CC);
|
|
|
|
exit when C /= '_' and then C /= '$'
|
|
and then C not in '0' .. '9'
|
|
and then C not in 'a' .. 'z'
|
|
and then C not in 'A' .. 'Z';
|
|
|
|
if J = Len then
|
|
Set_Interface_Name (E, S);
|
|
return;
|
|
|
|
else
|
|
J := J + 1;
|
|
end if;
|
|
end loop;
|
|
|
|
-- Here we need to encode. The encoding we use as follows:
|
|
-- three underscores + four hex digits (lower case)
|
|
|
|
Start_String;
|
|
|
|
for J in 1 .. String_Length (Str) loop
|
|
CC := Get_String_Char (Str, J);
|
|
|
|
if not In_Character_Range (CC) then
|
|
Encode;
|
|
else
|
|
C := Get_Character (CC);
|
|
|
|
if C = '_' or else C = '$'
|
|
or else C in '0' .. '9'
|
|
or else C in 'a' .. 'z'
|
|
or else C in 'A' .. 'Z'
|
|
then
|
|
Store_String_Char (CC);
|
|
else
|
|
Encode;
|
|
end if;
|
|
end if;
|
|
end loop;
|
|
|
|
Set_Interface_Name (E,
|
|
Make_String_Literal (Sloc (S),
|
|
Strval => End_String));
|
|
end if;
|
|
end Set_Encoded_Interface_Name;
|
|
|
|
-------------------
|
|
-- Set_Unit_Name --
|
|
-------------------
|
|
|
|
procedure Set_Unit_Name (N : Node_Id; With_Item : Node_Id) is
|
|
Pref : Node_Id;
|
|
Scop : Entity_Id;
|
|
|
|
begin
|
|
if Nkind (N) = N_Identifier
|
|
and then Nkind (With_Item) = N_Identifier
|
|
then
|
|
Set_Entity (N, Entity (With_Item));
|
|
|
|
elsif Nkind (N) = N_Selected_Component then
|
|
Change_Selected_Component_To_Expanded_Name (N);
|
|
Set_Entity (N, Entity (With_Item));
|
|
Set_Entity (Selector_Name (N), Entity (N));
|
|
|
|
Pref := Prefix (N);
|
|
Scop := Scope (Entity (N));
|
|
while Nkind (Pref) = N_Selected_Component loop
|
|
Change_Selected_Component_To_Expanded_Name (Pref);
|
|
Set_Entity (Selector_Name (Pref), Scop);
|
|
Set_Entity (Pref, Scop);
|
|
Pref := Prefix (Pref);
|
|
Scop := Scope (Scop);
|
|
end loop;
|
|
|
|
Set_Entity (Pref, Scop);
|
|
end if;
|
|
end Set_Unit_Name;
|
|
|
|
end Sem_Prag;
|