0024897: Possibility of uncontrolled exit if scanner fails in ExprIntrp
[occt.git] / src / ExprIntrp / ExprIntrp.cxx
CommitLineData
b311480e 1// Created on: 1992-08-17
2// Created by: Arnaud BOUZY
3// Copyright (c) 1992-1999 Matra Datavision
973c2be1 4// Copyright (c) 1999-2014 OPEN CASCADE SAS
b311480e 5//
973c2be1 6// This file is part of Open CASCADE Technology software library.
b311480e 7//
d5f74e42 8// This library is free software; you can redistribute it and/or modify it under
9// the terms of the GNU Lesser General Public License version 2.1 as published
973c2be1 10// by the Free Software Foundation, with special exception defined in the file
11// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12// distribution for complete text of the license and disclaimer of any warranty.
b311480e 13//
973c2be1 14// Alternatively, this file may be used under the terms of Open CASCADE
15// commercial license or contractual agreement.
7fd59977 16
17#include <ExprIntrp.ixx>
18#include <ExprIntrp_yaccintrf.hxx>
19#include <ExprIntrp_yaccanal.hxx>
20#include <Standard_ErrorHandler.hxx>
21#include <ExprIntrp_SyntaxError.hxx>
22
2a54ebbf 23static TCollection_AsciiString ExprIntrp_thestring;
7fd59977 24
25Standard_Boolean ExprIntrp::Parse(const Handle(ExprIntrp_Generator)& gen, const TCollection_AsciiString& str)
26{
27 ExprIntrp_Recept.SetMaster(gen);
7fd59977 28 if (str.Length() == 0) return Standard_False;
29 ExprIntrp_thestring = str;
30 ExprIntrp_start_string(ExprIntrp_thestring.ToCString());
31
32 int kerror=1;
33
34 {
35 try {
36 OCC_CATCH_SIGNALS
37 while (kerror!=0) {
cbc65140 38 kerror = ExprIntrpparse();
7fd59977 39 }
cbc65140 40 ExprIntrp_stop_string();
7fd59977 41 return Standard_True;
42 }
cbc65140 43 catch (Standard_Failure) {}
7fd59977 44 }
cbc65140 45 ExprIntrp_stop_string();
7fd59977 46 return Standard_False;
47}
48