| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- P R J . E X T -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 2000-2010, 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. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- Subprograms to set, get and cache external references, to be used as |
| -- External functions in project files. |
| |
| with Prj.Tree; |
| |
| package Prj.Ext is |
| |
| ------------------------- |
| -- External References -- |
| ------------------------- |
| |
| -- External references influence the way a project tree is processed (in |
| -- particular they provide the values for the typed string variables that |
| -- are then used in case constructions). |
| |
| -- External references are project-tree specific, so that when multiple |
| -- trees are loaded in parallel we can have different scenarios (or even |
| -- load the same tree twice and see different views of it). |
| |
| procedure Add |
| (Tree : Prj.Tree.Project_Node_Tree_Ref; |
| External_Name : String; |
| Value : String); |
| -- Add an external reference (or modify an existing one) |
| |
| function Value_Of |
| (Tree : Prj.Tree.Project_Node_Tree_Ref; |
| External_Name : Name_Id; |
| With_Default : Name_Id := No_Name) |
| return Name_Id; |
| -- Get the value of an external reference, and cache it for future uses |
| |
| function Check |
| (Tree : Prj.Tree.Project_Node_Tree_Ref; |
| Declaration : String) return Boolean; |
| -- Check that an external declaration <external>=<value> is correct. |
| -- If it is correct, the external reference is Added. |
| |
| procedure Reset (Tree : Prj.Tree.Project_Node_Tree_Ref); |
| -- Clear the internal data structure that stores the external references |
| -- and free any allocated memory. |
| |
| end Prj.Ext; |
