97 lines
4.6 KiB
Ada
97 lines
4.6 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- P R J . E X T --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 2000-2009, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING3. If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- Subprograms to set, get and cache external references, to be used as
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-- External functions in project files.
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with Prj.Tree;
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package Prj.Ext is
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------------------
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-- Project Path --
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------------------
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procedure Add_Search_Project_Directory
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(Tree : Prj.Tree.Project_Node_Tree_Ref;
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Path : String);
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-- Add a directory to the project path. Directories added with this
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-- procedure are added in order after the current directory and before
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-- the path given by the environment variable GPR_PROJECT_PATH. A value
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-- of "-" will remove the default project directory from the project path.
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--
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-- Calls to this subprogram must be performed before the first call to
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-- Project_Path below, or PATH will be added at the end of the search
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-- path.
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function Project_Path (Tree : Prj.Tree.Project_Node_Tree_Ref) return String;
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-- Return the current value of the project path, either the value set
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-- during elaboration of the package or, if procedure Set_Project_Path has
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-- been called, the value set by the last call to Set_Project_Path.
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procedure Set_Project_Path
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(Tree : Prj.Tree.Project_Node_Tree_Ref;
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New_Path : String);
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-- Give a new value to the project path. The new value New_Path should
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-- always start with the current directory (".") and the path separators
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-- should be the correct ones for the platform.
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-------------------------
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-- External References --
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-------------------------
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-- External references influence the way a project tree is processed (in
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-- particular they provide the values for the typed string variables that
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-- are then used in case constructions).
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-- External references are project-tree specific, so that when multiple
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-- trees are loaded in parallel we can have different scenarios (or even
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-- load the same tree twice and see different views of it).
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procedure Add
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(Tree : Prj.Tree.Project_Node_Tree_Ref;
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External_Name : String;
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Value : String);
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-- Add an external reference (or modify an existing one)
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function Value_Of
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(Tree : Prj.Tree.Project_Node_Tree_Ref;
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External_Name : Name_Id;
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With_Default : Name_Id := No_Name)
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return Name_Id;
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-- Get the value of an external reference, and cache it for future uses
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function Check
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(Tree : Prj.Tree.Project_Node_Tree_Ref;
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Declaration : String) return Boolean;
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-- Check that an external declaration <external>=<value> is correct.
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-- If it is correct, the external reference is Added.
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procedure Reset (Tree : Prj.Tree.Project_Node_Tree_Ref);
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-- Clear the internal data structure that stores the external references
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-- and free any allocated memory.
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end Prj.Ext;
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