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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- P R J . S T R T --
-- --
-- S p e c --
-- --
-- Copyright (C) 2001-2004 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 2, 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 COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This package implements parsing of string expressions in project files.
with Prj.Tree; use Prj.Tree;
private package Prj.Strt is
procedure Parse_String_Type_List (First_String : out Project_Node_Id);
-- Get the list of literal strings that are allowed for a typed string.
-- On entry, the current token is the first literal string following
-- a left parenthesis in a string type declaration such as:
-- type Toto is ("string_1", "string_2", "string_3");
-- On exit, the current token is the right parenthesis.
-- The parameter First_String is a node that contained the first
-- literal string of the string type, linked with the following
-- literal strings.
--
-- Report an error if
-- - a literal string is not found at the beginning of the list
-- or after a comma
-- - two literal strings in the list are equal
procedure Start_New_Case_Construction (String_Type : Project_Node_Id);
-- This procedure is called at the beginning of a case construction
-- The parameter String_Type is the node for the string type
-- of the case label variable.
-- The different literal strings of the string type are stored
-- into a table to be checked against the case labels of the
-- case construction.
procedure End_Case_Construction;
-- This procedure is called at the end of a case construction
-- to remove the case labels and to restore the previous state.
-- In particular, in the case of nested case constructions,
-- the case labels of the enclosing case construction are restored.
procedure Parse_Choice_List
(First_Choice : out Project_Node_Id);
-- Get the label for a choice list.
-- Report an error if
-- - a case label is not a literal string
-- - a case label is not in the typed string list
-- - the same case label is repeated in the same case construction
procedure Parse_Expression
(Expression : out Project_Node_Id;
Current_Project : Project_Node_Id;
Current_Package : Project_Node_Id;
Optional_Index : Boolean);
-- Parse a simple string expression or a string list expression.
-- Current_Project is the node of the project file being parsed.
-- Current_Package is the node of the package being parsed,
-- or Empty_Node when we are at the project level (not in a package).
-- On exit, Expression is the node of the expression that has
-- been parsed.
procedure Parse_Variable_Reference
(Variable : out Project_Node_Id;
Current_Project : Project_Node_Id;
Current_Package : Project_Node_Id);
-- Parse a variable or attribute reference.
-- Used internally (in expressions) and for case variables (in Prj.Dect).
-- Current_Package is the node of the package being parsed,
-- or Empty_Node when we are at the project level (not in a package).
-- On exit, Variable is the node of the variable or attribute reference.
-- A variable reference is made of one to three simple names.
-- An attribute reference is made of one or two simple names,
-- followed by an apostroph, followed by the attribute simple name.
end Prj.Strt;
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