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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License 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);
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);
return false;
}
char buffer[1024];
sprintf(buffer, "%d", helper.GetResult());
this->Makefile->AddDefinition(outputVariable, buffer);
return true;
}
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