| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- P R J . S T R T -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 2001-2005, 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, 51 Franklin Street, Fifth Floor, -- |
| -- Boston, MA 02110-1301, 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 |
| (In_Tree : Project_Node_Tree_Ref; |
| 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 |
| (In_Tree : Project_Node_Tree_Ref; |
| 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 |
| (Check_All_Labels : Boolean; |
| Case_Location : Source_Ptr); |
| -- 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. |
| -- When When_Others is False and we are not in quiet output, a warning |
| -- is emitted for each value of the case variable string type that has |
| -- not been specified. |
| |
| procedure Parse_Choice_List |
| (In_Tree : Project_Node_Tree_Ref; |
| 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 |
| (In_Tree : Project_Node_Tree_Ref; |
| 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 |
| (In_Tree : Project_Node_Tree_Ref; |
| 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; |
