| /*============================================================================ |
| 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; |
| } |