62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#include "cmMathCommand.h"
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#include "cmExprParserHelper.h"
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//----------------------------------------------------------------------------
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bool cmMathCommand
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::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
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{
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if ( args.size() < 1 )
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{
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this->SetError("must be called with at least one argument.");
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return false;
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}
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const std::string &subCommand = args[0];
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if(subCommand == "EXPR")
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{
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return this->HandleExprCommand(args);
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}
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std::string e = "does not recognize sub-command "+subCommand;
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this->SetError(e.c_str());
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return false;
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}
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//----------------------------------------------------------------------------
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bool cmMathCommand::HandleExprCommand(std::vector<std::string> const& args)
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{
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if ( args.size() != 3 )
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{
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this->SetError("EXPR called with incorrect arguments.");
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return false;
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}
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const std::string& outputVariable = args[1];
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const std::string& expression = args[2];
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cmExprParserHelper helper;
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if ( !helper.ParseString(expression.c_str(), 0) )
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{
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std::string e = "cannot parse the expression: \""+expression+"\": ";
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e += helper.GetError();
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this->SetError(e.c_str());
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return false;
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}
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char buffer[1024];
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sprintf(buffer, "%d", helper.GetResult());
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this->Makefile->AddDefinition(outputVariable.c_str(), buffer);
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return true;
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}
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