| /*========================================================================= |
| |
| Program: CMake - Cross-Platform Makefile Generator |
| Module: $RCSfile$ |
| Language: C++ |
| Date: $Date$ |
| Version: $Revision$ |
| |
| 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 "cmWhileCommand.h" |
| #include "cmIfCommand.h" |
| |
| bool cmWhileFunctionBlocker:: |
| IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile &mf) |
| { |
| // Prevent recusion and don't let this blocker block its own |
| // commands. |
| if (this->Executing) |
| { |
| return false; |
| } |
| |
| // at end of for each execute recorded commands |
| if (!cmSystemTools::Strucmp(lff.Name.c_str(),"while")) |
| { |
| // record the number of while commands past this one |
| this->Depth++; |
| } |
| else if (!cmSystemTools::Strucmp(lff.Name.c_str(),"endwhile")) |
| { |
| // if this is the endwhile for this while loop then execute |
| if (!this->Depth) |
| { |
| char* errorString = 0; |
| |
| std::vector<std::string> expandedArguments; |
| mf.ExpandArguments(this->Args, expandedArguments); |
| bool isTrue = |
| cmIfCommand::IsTrue(expandedArguments,&errorString,&mf); |
| |
| this->Executing = true; |
| while (isTrue) |
| { |
| // Invoke all the functions that were collected in the block. |
| for(unsigned int c = 0; c < this->Functions.size(); ++c) |
| { |
| mf.ExecuteCommand(this->Functions[c]); |
| } |
| expandedArguments.clear(); |
| mf.ExpandArguments(this->Args, expandedArguments); |
| isTrue = |
| cmIfCommand::IsTrue(expandedArguments,&errorString,&mf); |
| } |
| mf.RemoveFunctionBlocker(lff); |
| return true; |
| } |
| else |
| { |
| // decrement for each nested while that ends |
| this->Depth--; |
| } |
| } |
| |
| // record the command |
| this->Functions.push_back(lff); |
| |
| // always return true |
| return true; |
| } |
| |
| bool cmWhileFunctionBlocker:: |
| ShouldRemove(const cmListFileFunction& lff, cmMakefile& mf) |
| { |
| if(!cmSystemTools::Strucmp(lff.Name.c_str(),"endwhile")) |
| { |
| if (lff.Arguments == this->Args |
| || mf.IsOn("CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS")) |
| { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void cmWhileFunctionBlocker:: |
| ScopeEnded(cmMakefile &mf) |
| { |
| cmSystemTools::Error( |
| "The end of a CMakeLists file was reached with a WHILE statement that " |
| "was not closed properly. Within the directory: ", |
| mf.GetCurrentDirectory()); |
| } |
| |
| bool cmWhileCommand::InvokeInitialPass( |
| const std::vector<cmListFileArgument>& args) |
| { |
| if(args.size() < 1) |
| { |
| this->SetError("called with incorrect number of arguments"); |
| return false; |
| } |
| |
| // create a function blocker |
| cmWhileFunctionBlocker *f = new cmWhileFunctionBlocker(); |
| f->Args = args; |
| this->Makefile->AddFunctionBlocker(f); |
| |
| return true; |
| } |
| |