111 lines
5.7 KiB
Ada
111 lines
5.7 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- P R J . S T R T --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 2001-2014, 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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-- This package implements parsing of string expressions in project files
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with Prj.Tree; use Prj.Tree;
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private package Prj.Strt is
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procedure Parse_String_Type_List
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(In_Tree : Project_Node_Tree_Ref;
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First_String : out Project_Node_Id;
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Flags : Processing_Flags);
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-- Get the list of literal strings that are allowed for a typed string.
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-- On entry, the current token is the first literal string following
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-- a left parenthesis in a string type declaration such as:
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-- type Toto is ("string_1", "string_2", "string_3");
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--
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-- On exit, the current token is the right parenthesis. The parameter
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-- First_String is a node that contained the first literal string of the
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-- string type, linked with the following literal strings.
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--
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-- Report an error if
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-- - a literal string is not found at the beginning of the list
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-- or after a comma
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-- - two literal strings in the list are equal
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procedure Start_New_Case_Construction
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(In_Tree : Project_Node_Tree_Ref;
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String_Type : Project_Node_Id);
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-- This procedure is called at the beginning of a case construction. The
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-- parameter String_Type is the node for the string type of the case label
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-- variable. The different literal strings of the string type are stored
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-- into a table to be checked against the labels of the case construction.
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procedure End_Case_Construction
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(Check_All_Labels : Boolean;
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Case_Location : Source_Ptr;
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Flags : Processing_Flags;
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String_Type : Boolean);
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-- This procedure is called at the end of a case construction to remove
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-- the case labels and to restore the previous state. In particular, in the
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-- case of nested case constructions, the case labels of the enclosing case
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-- construction are restored. If When_Others is False and we are not in
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-- quiet output, a warning is emitted for each value of the case variable
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-- string type that has not been specified.
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procedure Parse_Choice_List
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(In_Tree : Project_Node_Tree_Ref;
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First_Choice : out Project_Node_Id;
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Flags : Processing_Flags;
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String_Type : Boolean := True);
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-- Get the label for a choice list.
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-- Report an error if
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-- - a case label is not a literal string
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-- - a case label is not in the typed string list
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-- - the same case label is repeated in the same case construction
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procedure Parse_Expression
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(In_Tree : Project_Node_Tree_Ref;
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Expression : out Project_Node_Id;
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Current_Project : Project_Node_Id;
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Current_Package : Project_Node_Id;
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Optional_Index : Boolean;
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Flags : Processing_Flags);
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-- Parse a simple string expression or a string list expression
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--
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-- Current_Project is the node of the project file being parsed
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--
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-- Current_Package is the node of the package being parsed, or Empty_Node
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-- when we are at the project level (not in a package). On exit, Expression
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-- is the node of the expression that has been parsed.
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procedure Parse_Variable_Reference
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(In_Tree : Project_Node_Tree_Ref;
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Variable : out Project_Node_Id;
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Current_Project : Project_Node_Id;
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Current_Package : Project_Node_Id;
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Flags : Processing_Flags);
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-- Parse variable or attribute reference. Used internally (in expressions)
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-- and for case variables (in Prj.Dect). Current_Package is the node of the
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-- package being parsed, or Empty_Node when we are at the project level
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-- (not in a package). On exit, Variable is the node of the variable or
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-- attribute reference. A variable reference is made of one to three simple
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-- names. An attribute reference is made of one or two simple names,
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-- followed by an apostrophe, followed by the attribute simple name.
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end Prj.Strt;
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