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