1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- P R J . S T R T -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 2001-2009, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- 17-- for more details. You should have received a copy of the GNU General -- 18-- Public License distributed with GNAT; see file COPYING3. If not, go to -- 19-- http://www.gnu.org/licenses for a complete copy of the license. -- 20-- -- 21-- GNAT was originally developed by the GNAT team at New York University. -- 22-- Extensive contributions were provided by Ada Core Technologies Inc. -- 23-- -- 24------------------------------------------------------------------------------ 25 26-- This package implements parsing of string expressions in project files 27 28with Prj.Tree; use Prj.Tree; 29 30private package Prj.Strt is 31 32 procedure Parse_String_Type_List 33 (In_Tree : Project_Node_Tree_Ref; 34 First_String : out Project_Node_Id; 35 Flags : Processing_Flags); 36 -- Get the list of literal strings that are allowed for a typed string. 37 -- On entry, the current token is the first literal string following 38 -- a left parenthesis in a string type declaration such as: 39 -- type Toto is ("string_1", "string_2", "string_3"); 40 -- 41 -- On exit, the current token is the right parenthesis. The parameter 42 -- First_String is a node that contained the first literal string of the 43 -- string type, linked with the following literal strings. 44 -- 45 -- Report an error if 46 -- - a literal string is not found at the beginning of the list 47 -- or after a comma 48 -- - two literal strings in the list are equal 49 50 procedure Start_New_Case_Construction 51 (In_Tree : Project_Node_Tree_Ref; 52 String_Type : Project_Node_Id); 53 -- This procedure is called at the beginning of a case construction The 54 -- parameter String_Type is the node for the string type of the case label 55 -- variable. The different literal strings of the string type are stored 56 -- into a table to be checked against the case labels of the case 57 -- construction. 58 59 procedure End_Case_Construction 60 (Check_All_Labels : Boolean; 61 Case_Location : Source_Ptr; 62 Flags : Processing_Flags); 63 -- This procedure is called at the end of a case construction to remove the 64 -- case labels and to restore the previous state. In particular, in the 65 -- case of nested case constructions, the case labels of the enclosing case 66 -- construction are restored. When When_Others is False and we are not in 67 -- quiet output, a warning is emitted for each value of the case variable 68 -- string type that has not been specified. 69 70 procedure Parse_Choice_List 71 (In_Tree : Project_Node_Tree_Ref; 72 First_Choice : out Project_Node_Id; 73 Flags : Processing_Flags); 74 -- Get the label for a choice list. 75 -- Report an error if 76 -- - a case label is not a literal string 77 -- - a case label is not in the typed string list 78 -- - the same case label is repeated in the same case construction 79 80 procedure Parse_Expression 81 (In_Tree : Project_Node_Tree_Ref; 82 Expression : out Project_Node_Id; 83 Current_Project : Project_Node_Id; 84 Current_Package : Project_Node_Id; 85 Optional_Index : Boolean; 86 Flags : Processing_Flags); 87 -- Parse a simple string expression or a string list expression 88 -- 89 -- Current_Project is the node of the project file being parsed 90 -- 91 -- Current_Package is the node of the package being parsed, or Empty_Node 92 -- when we are at the project level (not in a package). On exit, Expression 93 -- is the node of the expression that has been parsed. 94 95 procedure Parse_Variable_Reference 96 (In_Tree : Project_Node_Tree_Ref; 97 Variable : out Project_Node_Id; 98 Current_Project : Project_Node_Id; 99 Current_Package : Project_Node_Id; 100 Flags : Processing_Flags); 101 -- Parse variable or attribute reference. Used internally (in expressions) 102 -- and for case variables (in Prj.Dect). Current_Package is the node of the 103 -- package being parsed, or Empty_Node when we are at the project level 104 -- (not in a package). On exit, Variable is the node of the variable or 105 -- attribute reference. A variable reference is made of one to three simple 106 -- names. An attribute reference is made of one or two simple names, 107 -- followed by an apostrophe, followed by the attribute simple name. 108 109end Prj.Strt; 110