/*!
* \brief Exchange two GP trees on given points.
* \param ioTree1 First tree to mate.
* \param inNode1 Node index of the swap subtree first point.
* \param ioContext1 Evolutionary context relatively to the first tree.
* \param ioTree2 Second tree to mate.
* \param inNode2 Node index of the swap subtree second point.
* \param ioContext2 Evolutionary context relatively to the second tree.
*/
void GP::MutationSwapSubtreeOp::exchangeSubTrees(GP::Tree& ioTree1,
unsigned int inNode1,
GP::Context& ioContext1,
GP::Tree& ioTree2,
unsigned int inNode2,
GP::Context& ioContext2)
{
Beagle_StackTraceBeginM();
Beagle_AssertM(&ioTree1 != &ioTree2);
unsigned int lSwapSize1 = ioTree1[inNode1].mSubTreeSize;
unsigned int lSwapSize2 = ioTree2[inNode2].mSubTreeSize;
if(lSwapSize1 <= lSwapSize2) {
std::swap_ranges(ioTree1.begin()+inNode1, ioTree1.begin()+inNode1+lSwapSize1, ioTree2.begin()+inNode2);
ioTree1.insert(ioTree1.begin()+inNode1+lSwapSize1,
ioTree2.begin()+inNode2+lSwapSize1,
ioTree2.begin()+inNode2+lSwapSize2);
ioTree2.erase(ioTree2.begin()+inNode2+lSwapSize1, ioTree2.begin()+inNode2+lSwapSize2);
} else {
std::swap_ranges(ioTree1.begin()+inNode1, ioTree1.begin()+inNode1+lSwapSize2, ioTree2.begin()+inNode2);
ioTree2.insert(ioTree2.begin()+inNode2+lSwapSize2,
ioTree1.begin()+inNode1+lSwapSize2,
ioTree1.begin()+inNode1+lSwapSize1);
ioTree1.erase(ioTree1.begin()+inNode1+lSwapSize2, ioTree1.begin()+inNode1+lSwapSize1);
}
int lDiffSize = lSwapSize1 - lSwapSize2;
for(unsigned int i=0; i<(ioContext1.getCallStackSize()-1); i++)
ioTree1[ioContext1.getCallStackElement(i)].mSubTreeSize -= lDiffSize;
for(unsigned int j=0; j<(ioContext2.getCallStackSize()-1); j++)
ioTree2[ioContext2.getCallStackElement(j)].mSubTreeSize += lDiffSize;
Beagle_StackTraceEndM();
}
/*!
* \brief Expand given module of a GP tree.
* \param inNodeToExpand Index of node to expand in GP tree.
* \param ioTree Tree from which module will be expanded.
* \param ioContext Evolutionary context.
*/
void GP::ModuleExpandOp::expand(unsigned int inNodeToExpand,
GP::Tree& ioTree,
GP::Context& ioContext)
{
Beagle_StackTraceBeginM();
// Log tree before expansion.
Beagle_LogDebugM(
ioContext.getSystem().getLogger(),
"Tree before expansion"
);
Beagle_LogDebugM(
ioContext.getSystem().getLogger(),
ioTree
);
// Get the module index and reference.
Module::Handle lModuleInstance = castHandleT<Module>(ioTree[inNodeToExpand].mPrimitive);
unsigned int lModuleIndex = lModuleInstance->getIndex();
Beagle_LogVerboseM(
ioContext.getSystem().getLogger(),
std::string("Expanding ")+uint2ordinal(lModuleIndex+1)+
std::string(" module (called from ")+uint2ordinal(inNodeToExpand+1)+
std::string(" node of the tree)")
);
ModuleVectorComponent::Handle lModuleVectorComponent =
castHandleT<ModuleVectorComponent>(ioContext.getSystem().getComponent("ModuleVector"));
if(lModuleVectorComponent==NULL) {
throw Beagle_RunTimeExceptionM(std::string("GP system is not configured with a module vector. ")+
std::string("Consider adding a GP::ModuleVectorComponent object to the system."));
}
Beagle::GP::Tree::Handle lModule = (*lModuleVectorComponent)[lModuleIndex];
Beagle_LogDebugM(
ioContext.getSystem().getLogger(),
*lModule
);
// Generate new tree.
const Factory& lFactory = ioContext.getSystem().getFactory();
GP::Tree::Alloc::Handle lTreeAlloc =
castHandleT<GP::Tree::Alloc>(lFactory.getConceptAllocator("Genotype"));
GP::Tree::Handle lNewTree = castHandleT<GP::Tree>(lTreeAlloc->allocate());
std::string lArgName = lModuleInstance->getArgsName();
ioTree.setContextToNode(inNodeToExpand, ioContext);
for(unsigned int i=0; i<lModule->size(); ++i) {
if((*lModule)[i].mPrimitive->getName() != lArgName) {
lNewTree->push_back(GP::Node((*lModule)[i].mPrimitive));
} else {
GP::Argument::Handle lArg = castHandleT<GP::Argument>((*lModule)[i].mPrimitive);
const unsigned int lChildIndex =
ioTree[inNodeToExpand].mPrimitive->getChildrenNodeIndex(lArg->getIndex(), ioContext);
lNewTree->insert(lNewTree->end(), ioTree.begin()+lChildIndex,
ioTree.begin()+lChildIndex+ioTree[lChildIndex].mSubTreeSize);
}
}
ioTree.erase(ioTree.begin()+inNodeToExpand,
ioTree.begin()+inNodeToExpand+ioTree[inNodeToExpand].mSubTreeSize);
ioTree.insert(ioTree.begin()+inNodeToExpand, lNewTree->begin(), lNewTree->end());
ioTree.fixSubTreeSize();
// Log results.
Beagle_LogDebugM(
ioContext.getSystem().getLogger(),
"Tree after expansion"
);
Beagle_LogDebugM(
ioContext.getSystem().getLogger(),
ioTree
);
Beagle_StackTraceEndM();
}
