CMake/Source/cmMacroCommand.cxx

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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
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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.
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This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "cmMacroCommand.h"
#include "cmake.h"
// define the class for macro commands
class cmMacroHelperCommand : public cmCommand
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{
public:
cmMacroHelperCommand() {}
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///! clean up any memory allocated by the macro
~cmMacroHelperCommand() {};
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/**
* This is a virtual constructor for the command.
*/
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virtual cmCommand* Clone()
{
cmMacroHelperCommand *newC = new cmMacroHelperCommand;
// we must copy when we clone
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newC->Args = this->Args;
newC->Functions = this->Functions;
return newC;
}
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/**
* This determines if the command is invoked when in script mode.
*/
virtual bool IsScriptable() { return true; }
/**
* This is called when the command is first encountered in
* the CMakeLists.txt file.
*/
virtual bool InvokeInitialPass(const std::vector<cmListFileArgument>& args);
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virtual bool InitialPass(std::vector<std::string> const&) { return false; };
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/**
* The name of the command as specified in CMakeList.txt.
*/
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virtual const char* GetName() { return this->Args[0].c_str(); }
/**
* Succinct documentation.
*/
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virtual const char* GetTerseDocumentation()
{
std::string docs = "Macro named: ";
docs += this->GetName();
return docs.c_str();
}
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/**
* More documentation.
*/
virtual const char* GetFullDocumentation()
{
return this->GetTerseDocumentation();
}
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cmTypeMacro(cmMacroHelperCommand, cmCommand);
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std::vector<std::string> Args;
std::vector<cmListFileFunction> Functions;
};
bool cmMacroHelperCommand::InvokeInitialPass
(const std::vector<cmListFileArgument>& args)
{
// Expand the argument list to the macro.
std::vector<std::string> expandedArgs;
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this->Makefile->ExpandArguments(args, expandedArgs);
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std::string tmps;
cmListFileArgument arg;
std::string variable;
// make sure the number of arguments passed is at least the number
// required by the signature
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if (expandedArgs.size() < this->Args.size() - 1)
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{
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std::string errorMsg =
"Macro invoked with incorrect arguments for macro named: ";
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errorMsg += this->Args[0];
this->SetError(errorMsg.c_str());
return false;
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}
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// set the value of argc
cmOStringStream argcDefStream;
argcDefStream << expandedArgs.size();
std::string argcDef = argcDefStream.str();
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// declare varuiables for ARGV ARGN but do not compute until needed
std::string argvDef;
std::string argnDef;
bool argnDefInitialized = false;
bool argvDefInitialized = false;
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// Invoke all the functions that were collected in the block.
cmListFileFunction newLFF;
// for each function
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for(unsigned int c = 0; c < this->Functions.size(); ++c)
{
// Replace the formal arguments and then invoke the command.
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newLFF.Arguments.clear();
newLFF.Arguments.reserve(this->Functions[c].Arguments.size());
newLFF.Name = this->Functions[c].Name;
newLFF.FilePath = this->Functions[c].FilePath;
newLFF.Line = this->Functions[c].Line;
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const char* def = this->Makefile->GetDefinition
("CMAKE_MACRO_REPORT_DEFINITION_LOCATION");
bool macroReportLocation = false;
if(def && !cmSystemTools::IsOff(def))
{
macroReportLocation = true;
}
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// for each argument of the current function
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for (std::vector<cmListFileArgument>::const_iterator k =
this->Functions[c].Arguments.begin();
k != this->Functions[c].Arguments.end(); ++k)
{
tmps = k->Value;
// replace formal arguments
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for (unsigned int j = 1; j < this->Args.size(); ++j)
{
variable = "${";
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variable += this->Args[j];
variable += "}";
cmSystemTools::ReplaceString(tmps, variable.c_str(),
expandedArgs[j-1].c_str());
}
// replace argc
cmSystemTools::ReplaceString(tmps, "${ARGC}",argcDef.c_str());
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// repleace ARGN
if (tmps.find("${ARGN}") != std::string::npos)
{
if (!argnDefInitialized)
{
std::vector<std::string>::const_iterator eit;
std::vector<std::string>::size_type cnt = 0;
for ( eit = expandedArgs.begin(); eit != expandedArgs.end(); ++eit )
{
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if ( cnt >= this->Args.size()-1 )
{
if ( argnDef.size() > 0 )
{
argnDef += ";";
}
argnDef += *eit;
}
cnt ++;
}
argnDefInitialized = true;
}
cmSystemTools::ReplaceString(tmps, "${ARGN}", argnDef.c_str());
}
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// if the current argument of the current function has ${ARGV in it
// then try replacing ARGV values
if (tmps.find("${ARGV") != std::string::npos)
{
char argvName[60];
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// repleace ARGV, compute it only once
if (!argvDefInitialized)
{
std::vector<std::string>::const_iterator eit;
for ( eit = expandedArgs.begin(); eit != expandedArgs.end(); ++eit )
{
if ( argvDef.size() > 0 )
{
argvDef += ";";
}
argvDef += *eit;
}
argvDefInitialized = true;
}
cmSystemTools::ReplaceString(tmps, "${ARGV}", argvDef.c_str());
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// also replace the ARGV1 ARGV2 ... etc
for (unsigned int t = 0; t < expandedArgs.size(); ++t)
{
sprintf(argvName,"${ARGV%i}",t);
cmSystemTools::ReplaceString(tmps, argvName,
expandedArgs[t].c_str());
}
}
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arg.Value = tmps;
arg.Quoted = k->Quoted;
if(macroReportLocation)
{
// Report the location of the argument where the macro was
// defined.
arg.FilePath = k->FilePath;
arg.Line = k->Line;
}
else
{
// Report the location of the argument where the macro was
// invoked.
if (args.size())
{
arg.FilePath = args[0].FilePath;
arg.Line = args[0].Line;
}
else
{
arg.FilePath = "Unknown";
arg.Line = 0;
}
}
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newLFF.Arguments.push_back(arg);
}
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if(!this->Makefile->ExecuteCommand(newLFF))
{
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const char* filePath = args[0].FilePath;
if(!filePath)
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{
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filePath = "Unknown";
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}
cmOStringStream error;
error << "Error in cmake code at\n"
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<< filePath << ":" << args[0].Line << ":\n"
<< "A command failed during the invocation of macro \""
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<< this->Args[0].c_str() << "\".";
cmSystemTools::Error(error.str().c_str());
return false;
}
}
return true;
}
bool cmMacroFunctionBlocker::
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IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile &mf)
{
// record commands until we hit the ENDMACRO
// at the ENDMACRO call we shift gears and start looking for invocations
if(!cmSystemTools::Strucmp(lff.Name.c_str(),"macro"))
{
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this->Depth++;
}
else if(!cmSystemTools::Strucmp(lff.Name.c_str(),"endmacro"))
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{
// if this is the endmacro for this macro then execute
if (!this->Depth)
{
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std::string name = this->Args[0];
std::vector<std::string>::size_type cc;
name += "(";
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for ( cc = 0; cc < this->Args.size(); cc ++ )
{
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name += " " + this->Args[cc];
}
name += " )";
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mf.AddMacro(this->Args[0].c_str(), name.c_str());
// create a new command and add it to cmake
cmMacroHelperCommand *f = new cmMacroHelperCommand();
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f->Args = this->Args;
f->Functions = this->Functions;
std::string newName = "_" + this->Args[0];
mf.GetCMakeInstance()->RenameCommand(this->Args[0].c_str(),
newName.c_str());
mf.AddCommand(f);
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// remove the function blocker now that the macro is defined
mf.RemoveFunctionBlocker(lff);
return true;
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}
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else
{
// decrement for each nested macro that ends
this->Depth--;
}
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}
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// if it wasn't an endmacro and we are not executing then we must be
// recording
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this->Functions.push_back(lff);
return true;
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}
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bool cmMacroFunctionBlocker::
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ShouldRemove(const cmListFileFunction& lff, cmMakefile &mf)
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{
if(!cmSystemTools::Strucmp(lff.Name.c_str(),"endmacro"))
{
std::vector<std::string> expandedArguments;
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mf.ExpandArguments(lff.Arguments, expandedArguments);
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if ((!expandedArguments.empty() &&
(expandedArguments[0] == this->Args[0]))
|| mf.IsOn("CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS"))
{
return true;
}
}
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return false;
}
void cmMacroFunctionBlocker::
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ScopeEnded(cmMakefile &mf)
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{
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// macros should end with an EndMacro
cmSystemTools::Error(
"The end of a CMakeLists file was reached with a MACRO statement that "
"was not closed properly. Within the directory: ",
mf.GetCurrentDirectory(), " with macro ",
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this->Args[0].c_str());
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}
bool cmMacroCommand::InitialPass(std::vector<std::string> const& args)
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{
if(args.size() < 1)
{
this->SetError("called with incorrect number of arguments");
return false;
}
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// create a function blocker
cmMacroFunctionBlocker *f = new cmMacroFunctionBlocker();
for(std::vector<std::string>::const_iterator j = args.begin();
j != args.end(); ++j)
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{
f->Args.push_back(*j);
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}
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this->Makefile->AddFunctionBlocker(f);
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return true;
}