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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile: cmForEachCommand.cxx,v $
Language: C++
Date: $Date: 2008-02-29 17:18:11 $
Version: $Revision: 1.27 $
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 "cmForEachCommand.h"
bool cmForEachFunctionBlocker::
IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile &mf,
cmExecutionStatus &inStatus)
{
// Prevent recusion and don't let this blocker block its own
// commands.
if (this->Executing)
{
return false;
}
if (!cmSystemTools::Strucmp(lff.Name.c_str(),"foreach"))
{
// record the number of nested foreach commands
this->Depth++;
}
else if (!cmSystemTools::Strucmp(lff.Name.c_str(),"endforeach"))
{
// if this is the endofreach for this statement
if (!this->Depth)
{
// at end of for each execute recorded commands
// store the old value
std::string oldDef;
if (mf.GetDefinition(this->Args[0].c_str()))
{
oldDef = mf.GetDefinition(this->Args[0].c_str());
}
this->Executing = true;
std::vector<std::string>::const_iterator j = this->Args.begin();
++j;
std::string tmps;
cmListFileArgument arg;
for( ; j != this->Args.end(); ++j)
{
// set the variable to the loop value
mf.AddDefinition(this->Args[0].c_str(),j->c_str());
// Invoke all the functions that were collected in the block.
cmExecutionStatus status;
for(unsigned int c = 0; c < this->Functions.size(); ++c)
{
status.Clear();
mf.ExecuteCommand(this->Functions[c],status);
if (status.GetReturnInvoked())
{
inStatus.SetReturnInvoked(true);
// restore the variable to its prior value
mf.AddDefinition(this->Args[0].c_str(),oldDef.c_str());
mf.RemoveFunctionBlocker(lff);
return true;
}
if (status.GetBreakInvoked())
{
// restore the variable to its prior value
mf.AddDefinition(this->Args[0].c_str(),oldDef.c_str());
mf.RemoveFunctionBlocker(lff);
return true;
}
}
}
// restore the variable to its prior value
mf.AddDefinition(this->Args[0].c_str(),oldDef.c_str());
mf.RemoveFunctionBlocker(lff);
return true;
}
else
{
// close out a nested foreach
this->Depth--;
}
}
// record the command
this->Functions.push_back(lff);
// always return true
return true;
}
bool cmForEachFunctionBlocker::
ShouldRemove(const cmListFileFunction& lff, cmMakefile& mf)
{
if(!cmSystemTools::Strucmp(lff.Name.c_str(),"endforeach"))
{
std::vector<std::string> expandedArguments;
mf.ExpandArguments(lff.Arguments, expandedArguments);
// if the endforeach has arguments then make sure
// they match the begin foreach arguments
if ((expandedArguments.empty() ||
(expandedArguments[0] == this->Args[0])))
{
return true;
}
}
return false;
}
void cmForEachFunctionBlocker::
ScopeEnded(cmMakefile &mf)
{
cmSystemTools::Error("The end of a CMakeLists file was reached with a "
"FOREACH statement that was not closed properly. "
"Within the directory: ",
mf.GetCurrentDirectory());
}
bool cmForEachCommand
::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
{
if(args.size() < 1)
{
this->SetError("called with incorrect number of arguments");
return false;
}
// create a function blocker
cmForEachFunctionBlocker *f = new cmForEachFunctionBlocker();
if ( args.size() > 1 )
{
if ( args[1] == "RANGE" )
{
int start = 0;
int stop = 0;
int step = 0;
if ( args.size() == 3 )
{
stop = atoi(args[2].c_str());
}
if ( args.size() == 4 )
{
start = atoi(args[2].c_str());
stop = atoi(args[3].c_str());
}
if ( args.size() == 5 )
{
start = atoi(args[2].c_str());
stop = atoi(args[3].c_str());
step = atoi(args[4].c_str());
}
if ( step == 0 )
{
if ( start > stop )
{
step = -1;
}
else
{
step = 1;
}
}
if (
(start > stop && step > 0) ||
(start < stop && step < 0) ||
step == 0
)
{
cmOStringStream str;
str << "called with incorrect range specification: start ";
str << start << ", stop " << stop << ", step " << step;
this->SetError(str.str().c_str());
return false;
}
std::vector<std::string> range;
char buffer[100];
range.push_back(args[0]);
int cc;
for ( cc = start; ; cc += step )
{
if ( (step > 0 && cc > stop) || (step < 0 && cc < stop) )
{
break;
}
sprintf(buffer, "%d", cc);
range.push_back(buffer);
if ( cc == stop )
{
break;
}
}
f->Args = range;
}
else
{
f->Args = args;
}
}
else
{
f->Args = args;
}
this->Makefile->AddFunctionBlocker(f);
return true;
}
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