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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile: cmMathCommand.cxx,v $
Language: C++
Date: $Date: 2008-01-23 15:27:59 $
Version: $Revision: 1.3 $
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "cmMathCommand.h"
#include "cmExprParserHelper.h"
//----------------------------------------------------------------------------
bool cmMathCommand
::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
{
if ( args.size() < 1 )
{
this->SetError("must be called with at least one argument.");
return false;
}
const std::string &subCommand = args[0];
if(subCommand == "EXPR")
{
return this->HandleExprCommand(args);
}
std::string e = "does not recognize sub-command "+subCommand;
this->SetError(e.c_str());
return false;
}
//----------------------------------------------------------------------------
bool cmMathCommand::HandleExprCommand(std::vector<std::string> const& args)
{
if ( args.size() != 3 )
{
this->SetError("EXPR called with incorrect arguments.");
return false;
}
const std::string& outputVariable = args[1];
const std::string& expression = args[2];
cmExprParserHelper helper;
if ( !helper.ParseString(expression.c_str(), 0) )
{
std::string e = "cannot parse the expression: \""+expression+"\": ";
e += helper.GetError();
this->SetError(e.c_str());
return false;
}
char buffer[1024];
sprintf(buffer, "%d", helper.GetResult());
this->Makefile->AddDefinition(outputVariable.c_str(), buffer);
return true;
}
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