COSC_4P82_Assignment_1/lib/beagle-3.0.3/beagle/GP/src/Argument.cpp

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/*
* Open BEAGLE
* Copyright (C) 2001-2007 by Christian Gagne and Marc Parizeau
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact:
* Laboratoire de Vision et Systemes Numeriques
* Departement de genie electrique et de genie informatique
* Universite Laval, Quebec, Canada, G1K 7P4
* http://vision.gel.ulaval.ca
*
*/
/*!
* \file beagle/GP/src/Argument.cpp
* \brief Implementation of class GP::Argument.
* \author Christian Gagne
* \author Matthew Walker
* \author Marc Parizeau
* $Revision: 1.8.2.1 $
* $Date: 2007/05/09 01:51:06 $
*/
#include "beagle/GP.hpp"
#ifdef BEAGLE_HAVE_RTTI
#include <typeinfo>
#endif // BEAGLE_HAVE_RTTI
using namespace Beagle;
/*!
* \brief Construct an argument primitive.
* \param inValueAlloc Allocator of arguments values.
* \param inEvalMode Evaluation mode of the arguments
* (see \ref Beagle::GP::ArgumentT::ArgumentsEvaluationMode).
* \param inIndex Argument index.
* \param inName Name of the argument primitive.
*/
GP::Argument::Argument(Object::Alloc::Handle inValueAlloc,
unsigned int inEvalMode,
unsigned int inIndex,
Beagle::string inName) :
GP::Primitive(0,inName),
mSharedData(new SharedData(inValueAlloc,inEvalMode)),
mIndex(inIndex)
{ }
/*!
* \brief Protected constructor of an argument, used internally.
* \param inSharedData Handle to share data between arguments.
* \param inIndex Index of the argument.
* \param inName Name of the argument primitive.
*/
GP::Argument::Argument(GP::Argument::SharedData::Handle inSharedData,
unsigned int inIndex,
Beagle::string inName) :
GP::Primitive(0,inName),
mSharedData(inSharedData),
mIndex(inIndex)
{ }
/*!
* \brief Generate a new argument of the same type than the actual one.
* \param inIndex Index the generated argument is refering to.
* \return Handle to the generated argument primitive.
*/
GP::Argument::Handle GP::Argument::generateArgument(unsigned int inIndex) const
{
Beagle_StackTraceBeginM();
return new GP::Argument(mSharedData, inIndex, getName());
Beagle_StackTraceEndM("GP::Argument::Handle GP::Argument::generateArgument(unsigned int inIndex) const");
}
#ifdef BEAGLE_HAVE_RTTI
/*!
* \brief Return typing of the arguments.
* \param ioContext Evolutionary context.
* \return RTTI type_info of the arguments.
*/
const std::type_info* GP::Argument::getReturnType(GP::Context& ioContext) const
{
Beagle_StackTraceBeginM();
Object::Bag::Alloc::Handle lObjAlloc =
castHandleT<Object::Bag::Alloc>(mSharedData->mCaches.getTypeAlloc());
Object::Handle lObj = lObjAlloc->getContainerTypeAlloc()->allocate();
return &typeid(*lObj);
Beagle_StackTraceEndM("const std::type_info* GP::Argument::getReturnType(GP::Context& ioContext) const");
}
#endif // BEAGLE_HAVE_RTTI
/*!
* \brief Return selection weight of the argument primitive.
* \param inNumberArguments Number of arguments to get weight for.
* \param ioContext Evolutionary context.
* \return Selection weight for the given number of arguments.
*/
double GP::Argument::getSelectionWeight(unsigned int inNumberArguments,
GP::Context& ioContext) const
{
Beagle_StackTraceBeginM();
if(ioContext.getGenotypeIndex() == 0) return 0.0;
if((inNumberArguments==0) || (inNumberArguments==GP::Primitive::eAny)) {
const unsigned int lTreeNbArgs = ioContext.getGenotype().getNumberArguments();
if(lTreeNbArgs > 0) return double(lTreeNbArgs);
}
return 0.0;
Beagle_StackTraceEndM("double GP::Argument::getSelectionWeight(unsigned int inNumberArguments, GP::Context& ioContext) const");
}
/*!
* \brief Return a reference to the actual argument.
* \param inNumberArguments Number of arguments asked for.
* \param ioContext Evolutionary context.
* \return Handle to argument.
*/
GP::Primitive::Handle GP::Argument::giveReference(unsigned int inNumberArguments,
GP::Context& ioContext)
{
Beagle_StackTraceBeginM();
if(mIndex!=eGenerator) return this;
const unsigned int lTreeNbArgs = ioContext.getGenotype().getNumberArguments();
Beagle_AssertM(lTreeNbArgs > 0);
const unsigned int lGenIndex =
ioContext.getSystem().getRandomizer().rollInteger(0,(lTreeNbArgs-1));
return generateArgument(lGenIndex);
Beagle_StackTraceEndM("GP::Primitive::Handle GP::Argument::giveReference(unsigned int inNumberArguments, GP::Context& ioContext)");
}
/*!
* \brief Execute argument primitive.
* \param outResult Result containing value of argument.
* \param ioContext Evolutionary context.
*/
void GP::Argument::execute(GP::Datum& outResult, GP::Context& ioContext)
{
Beagle_StackTraceBeginM();
Object::Bag::Alloc::Handle lCacheBagAlloc =
castHandleT<Object::Bag::Alloc>(mSharedData->mCaches.getTypeAlloc());
Object::Alloc::Handle lValuesAlloc = lCacheBagAlloc->getContainerTypeAlloc();
if(mSharedData->mEvalMode==ePreCompute) {
Beagle_AssertM(mIndex < mSharedData->mCaches.back()->size());
lValuesAlloc->copy(outResult, *(*mSharedData->mCaches.back())[mIndex]);
}
else if(mSharedData->mEvalMode==eJustInTime) {
GP::Context::Handle lActualContext = mSharedData->mEvalContext.back();
mSharedData->mEvalContext.pop_back();
lActualContext->setAllowedNodesExecution(ioContext.getAllowedNodesExecution());
lActualContext->setAllowedExecutionTime(ioContext.getAllowedExecutionTime());
lActualContext->setNodesExecutionCount(ioContext.getNodesExecutionCount());
lActualContext->getExecutionTimer() = ioContext.getExecutionTimer();
getArgument(mIndex, outResult, *lActualContext);
ioContext.getExecutionTimer() = lActualContext->getExecutionTimer();
ioContext.setNodesExecutionCount(lActualContext->getNodesExecutionCount());
ioContext.setAllowedExecutionTime(lActualContext->getAllowedExecutionTime());
ioContext.setAllowedNodesExecution(lActualContext->getAllowedNodesExecution());
mSharedData->mEvalContext.push_back(lActualContext);
}
else if(mSharedData->mEvalMode==eCaching) {
Beagle_AssertM(mIndex < mSharedData->mCaches.back()->size());
if((*mSharedData->mCaches.back())[mIndex]!=NULL) {
lValuesAlloc->copy(outResult, *(*mSharedData->mCaches.back())[mIndex]);
}
else {
Object::Bag::Handle lActualCache = mSharedData->mCaches.back();
mSharedData->mCaches.pop_back();
GP::Context::Handle lActualContext = mSharedData->mEvalContext.back();
mSharedData->mEvalContext.pop_back();
lActualContext->setAllowedNodesExecution(ioContext.getAllowedNodesExecution());
lActualContext->setAllowedExecutionTime(ioContext.getAllowedExecutionTime());
lActualContext->setNodesExecutionCount(ioContext.getNodesExecutionCount());
lActualContext->getExecutionTimer() = ioContext.getExecutionTimer();
getArgument(mIndex, outResult, *lActualContext);
ioContext.getExecutionTimer() = lActualContext->getExecutionTimer();
ioContext.setNodesExecutionCount(lActualContext->getNodesExecutionCount());
ioContext.setAllowedExecutionTime(lActualContext->getAllowedExecutionTime());
ioContext.setAllowedNodesExecution(lActualContext->getAllowedNodesExecution());
mSharedData->mEvalContext.push_back(lActualContext);
mSharedData->mCaches.push_back(lActualCache);
(*lActualCache)[mIndex] = lValuesAlloc->clone(outResult);
}
}
else {
throw Beagle_InternalExceptionM(string("Undefined evaluation mode (")+
uint2str(mSharedData->mEvalMode)+string(") for arguments!"));
}
Beagle_StackTraceEndM("void GP::Argument::execute(GP::Datum& outResult, GP::Context& ioContext)");
}
/*!
* \brief Return whether selection weight is stable for given number of arguments.
* \param inNumberArguments Number of arguments to test weight stability.
* \return True if selection weight is table for given number of arguments, false if not.
*/
bool GP::Argument::isSelectionWeightStable(unsigned int inNumberArguments) const
{
Beagle_StackTraceBeginM();
if((inNumberArguments==0) || (inNumberArguments==GP::Primitive::eAny)) return false;
return true;
Beagle_StackTraceEndM("bool GP::Argument::isSelectionWeightStable(unsigned int inNumberArguments) const");
}
/*!
* \brief Push execution context to prepare the execution of the argument.
* \param inNumberArguments Number of arguments of called tree.
* \param ioContext Evolutionary context.
*/
void GP::Argument::pushExecutionContext(unsigned int inNumberArguments, GP::Context& ioContext)
{
Beagle_StackTraceBeginM();
switch(mSharedData->mEvalMode) {
case eCaching:
{
Object::Bag::Alloc::Handle lCacheBagAlloc =
castHandleT<Object::Bag::Alloc>(mSharedData->mCaches.getTypeAlloc());
Object::Alloc::Handle lValuesAlloc = lCacheBagAlloc->getContainerTypeAlloc();
Object::Bag::Handle lNewCache = castHandleT<Object::Bag>(lCacheBagAlloc->allocate());
lNewCache->resize(inNumberArguments);
mSharedData->mCaches.push_back(lNewCache);
GP::Context::Alloc& lContextAlloc =
castObjectT<GP::Context::Alloc&>(ioContext.getSystem().getContextAllocator());
GP::Context::Handle lNewEvalContext =
castHandleT<GP::Context>(lContextAlloc.clone(ioContext));
mSharedData->mEvalContext.push_back(lNewEvalContext);
break;
}
case eJustInTime:
{
GP::Context::Alloc& lContextAlloc =
castObjectT<GP::Context::Alloc&>(ioContext.getSystem().getContextAllocator());
GP::Context::Handle lNewEvalContext =
castHandleT<GP::Context>(lContextAlloc.clone(ioContext));
mSharedData->mEvalContext.push_back(lNewEvalContext);
break;
}
case ePreCompute:
{
Object::Bag::Alloc::Handle lCacheBagAlloc =
castHandleT<Object::Bag::Alloc>(mSharedData->mCaches.getTypeAlloc());
Object::Alloc::Handle lValuesAlloc = lCacheBagAlloc->getContainerTypeAlloc();
Object::Bag::Handle lNewCache = castHandleT<Object::Bag>(lCacheBagAlloc->allocate());
lNewCache->resize(inNumberArguments);
for(unsigned int i=0; i<inNumberArguments; ++i) getArgument(i, *(*lNewCache)[i], ioContext);
mSharedData->mCaches.push_back(lNewCache);
}
default:
{
throw Beagle_InternalExceptionM(string("Undefined evaluation mode (")+
uint2str(mSharedData->mEvalMode)+string(") for the arguments!"));
}
}
Beagle_StackTraceEndM("void GP::Argument::pushExecutionContext(unsigned int inNumberArguments, GP::Context& ioContext)");
}
/*!
* \brief Pop execution context as the execution of the argument is done.
*/
void GP::Argument::popExecutionContext()
{
Beagle_StackTraceBeginM();
switch(mSharedData->mEvalMode) {
case eCaching:
{
mSharedData->mCaches.pop_back();
mSharedData->mEvalContext.pop_back();
break;
}
case eJustInTime:
{
mSharedData->mEvalContext.pop_back();
break;
}
case ePreCompute:
{
mSharedData->mCaches.pop_back();
break;
}
default:
{
throw Beagle_InternalExceptionM(string("Undefined evaluation mode (")+
uint2str(mSharedData->mEvalMode)+string(") for the arguments!"));
}
}
Beagle_StackTraceEndM("void GP::Argument::popExecutionContext()");
}
/*!
* \brief Read an argument primitive from XML subtree.
* \param inIter XML iterator to read primitive from.
* \param ioContext Evolutionary context.
*/
void GP::Argument::readWithContext(PACC::XML::ConstIterator inIter, GP::Context& ioContext)
{
Beagle_StackTraceBeginM();
GP::Primitive::readWithContext(inIter, ioContext);
string lIndexValue = inIter->getAttribute("id").c_str();
if(lIndexValue.empty()==false) {
mIndex = str2uint(lIndexValue);
Beagle_AssertM(mIndex < ioContext.getGenotype().getNumberArguments());
}
Beagle_StackTraceEndM("void GP::Argument::readWithContext(PACC::XML::ConstIterator inIter, GP::Context& ioContext)");
}
/*!
* \brief Validate the arguments position in the tree.
* \param ioContext Evolutionary context.
* \return True if the argument is correctly positioned, false if not.
* \throw Beagle::AssertException If the context is in a bad state.
*/
bool GP::Argument::validate(GP::Context& ioContext) const
{
Beagle_StackTraceBeginM();
if(GP::Primitive::validate(ioContext) == false) return false;
if(ioContext.getGenotypeIndex() == 0) return false;
if(mIndex >= ioContext.getGenotype().getNumberArguments()) return false;
return true;
Beagle_StackTraceEndM("bool GP::Argument::validate(GP::Context& ioContext) const");
}
/*!
* \brief Write argument primitive into XML streamer.
* \param ioStreamer XML streamer to write primitive into.
* \param inIndent Whether XML output should be indented.
*/
void GP::Argument::writeContent(PACC::XML::Streamer& ioStreamer, bool inIndent) const
{
Beagle_StackTraceBeginM();
if(mIndex!=eGenerator) ioStreamer.insertAttribute("id", uint2str(mIndex));
Beagle_StackTraceEndM("void GP::Argument::writeContent(PACC::XML::Streamer& ioStreamer, bool inIndent) const");
}