Cleaned up code
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#include "Core/EntityFilePreprocessor.h"
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EntityFilePreprocessor::EntityFilePreprocessor(const EntityFile* entityFile)
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: m_EntityFile(entityFile)
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{
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EntityFileHandler handler;
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handler.SetStartComponentCallback(std::bind(&EntityFilePreprocessor::onStartComponent, this, std::placeholders::_1, std::placeholders::_2));
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m_EntityFile->Parse(&handler);
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LOG_DEBUG("___ COMPONENT DEFINITIONS ___");
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for (auto& kv : m_ComponentCounts) {
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LOG_DEBUG("%s: %i", kv.first.c_str(), kv.second);
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}
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parseComponentInfo();
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for (auto& kv : m_ComponentInfo) {
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auto& info = kv.second;
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LOG_DEBUG("Component: %s (%s)", info.Name.c_str(), info.Meta.Annotation.c_str());
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LOG_DEBUG("Stride: %i", info.Meta.Stride);
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LOG_DEBUG("Allocation: %i", info.Meta.Allocation);
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for (auto& kv : info.FieldTypes) {
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LOG_DEBUG("\t%i\t%s %s", info.FieldOffsets[kv.first], kv.second.c_str(), kv.first.c_str());
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}
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}
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parseDefaults();
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}
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void EntityFilePreprocessor::RegisterComponents(World* world)
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{
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for (auto& kv : m_ComponentInfo) {
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world->RegisterComponent(kv.second);
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}
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}
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void EntityFilePreprocessor::onStartComponent(EntityID entity, std::string type)
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{
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//LOG_DEBUG("Component: %s", type.c_str());
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m_ComponentCounts[type]++;
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}
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void EntityFilePreprocessor::parseComponentInfo()
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{
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using namespace xercesc;
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EntityFileXMLErrorHandler errorHandler;
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auto grammarPool = m_EntityFile->GrammarPool();
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bool whateverTheFuckThisIs;
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auto xsModel = grammarPool->getXSModel(whateverTheFuckThisIs);
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// Find component xsd element declarations
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std::cout << "Enumerating components..." << std::endl;
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// <xs:element name="ComponentName">
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auto topLevelElements = xsModel->getComponents(XSConstants::ELEMENT_DECLARATION);
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for (unsigned int i = 0; i < topLevelElements->getLength(); ++i) {
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auto element = static_cast<XSElementDeclaration*>(topLevelElements->item(i));
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std::string nameSpace = XS::ToString(element->getNamespace());
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if (nameSpace != "components") {
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continue;
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}
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ComponentInfo compInfo;
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// Name
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compInfo.Name = XS::ToString(element->getName());
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// Known allocation
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compInfo.Meta.Allocation = m_ComponentCounts[compInfo.Name];
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// Annotation
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auto componentAnnotation = element->getAnnotation();
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if (componentAnnotation != nullptr) {
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// Parse annotation XML
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char* annotationString = XMLString::transcode(componentAnnotation->getAnnotationString());
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MemBufInputSource annotationInput(reinterpret_cast<const XMLByte*>(annotationString), strlen(annotationString), "MemBuf: Annotation String");
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XercesDOMParser parser(nullptr, XMLPlatformUtils::fgMemoryManager, grammarPool);
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parser.setErrorHandler(&errorHandler);
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parser.parse(annotationInput);
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XMLString::release(&annotationString);
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auto doc = parser.getDocument();
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// TODO: Add allocation estimations from external file on map-to-map basis
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// Add allocation estimation(s)
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//auto allocationTags = doc->getElementsByTagName(XSTR("meta:allocation"));
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//for (int i = 0; i < allocationTags->getLength(); ++i) {
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// auto allocation = dynamic_cast<DOMElement*>(allocationTags->item(i));
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// auto child = allocation->getFirstChild();
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// if (child == nullptr) {
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// continue;
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// }
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// XSValue::Status status;
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// XSValue* val = XSValue::getActualValue(child->getNodeValue(), XSValue::dt_integer, status);
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// compInfo.Meta.Allocation += val->fData.fValue.f_int;
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//}
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// Save documentation string
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auto documentationTags = doc->getElementsByTagName(XS::ToXMLCh("xs:documentation"));
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if (documentationTags->getLength() != 0) {
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auto child = documentationTags->item(0)->getFirstChild();
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if (child != nullptr) {
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compInfo.Meta.Annotation = XS::ToString(child->getNodeValue());
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}
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}
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} else {
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LOG_WARNING("Component is missing an annotation!");
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}
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// <xs:complexType>
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auto typeDefinition = element->getTypeDefinition();
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if (typeDefinition->getTypeCategory() != XSTypeDefinition::COMPLEX_TYPE) {
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LOG_ERROR("Type definition wasn't COMPLEX_TYPE! Skipping.");
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continue;
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}
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auto complexTypeDefinition = dynamic_cast<XSComplexTypeDefinition*>(typeDefinition);
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// <xs:all>
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auto modelGroupParticle = complexTypeDefinition->getParticle();
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if (modelGroupParticle->getTermType() != XSParticle::TERM_MODELGROUP) {
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LOG_ERROR("Model group particle wasn't TERM_MODELGROUP! Skipping.");
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continue;
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}
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auto modelGroup = modelGroupParticle->getModelGroupTerm();
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// <xs:element...
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// <xs:attribute...
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unsigned int fieldOffset = 0;
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auto particles = modelGroup->getParticles();
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for (unsigned int i = 0; i < particles->size(); ++i) {
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auto particle = particles->elementAt(i);
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if (particle->getTermType() != XSParticle::TERM_ELEMENT) {
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LOG_ERROR("Particle wasn't TERM_ELEMENT! Skipping.");
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continue;
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}
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auto elementDeclaration = particle->getElementTerm();
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std::string name = XS::ToString(elementDeclaration->getName());
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std::string type = XS::ToString(elementDeclaration->getTypeDefinition()->getName());
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size_t stride = EntityFile::GetTypeStride(type);
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if (stride == 0) {
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std::cout << "Warning: Field \"" << name << "\" in component \"" << compInfo.Name << "\" uses unexpected field type \"" << type << "\". Skipping." << std::endl;
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continue;
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}
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compInfo.FieldTypes[name] = type;
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compInfo.FieldOffsets[name] = fieldOffset;
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fieldOffset += stride;
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}
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compInfo.Meta.Stride = fieldOffset;
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m_ComponentInfo[compInfo.Name] = compInfo;
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}
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}
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void EntityFilePreprocessor::parseDefaults()
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{
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using namespace xercesc;
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EntityFileXMLErrorHandler errorHandler;
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for (auto& ci : m_ComponentInfo) {
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// Allocate memory for default values
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ci.second.Defaults = std::shared_ptr<char>(new char[ci.second.Meta.Stride]);
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memset(ci.second.Defaults.get(), 0, ci.second.Meta.Stride);
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XercesDOMParser parser(nullptr, XMLPlatformUtils::fgMemoryManager);
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parser.setErrorHandler(&errorHandler);
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std::string componentName = ci.first;
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LOG_DEBUG("Parsing defaults for component %s", componentName.c_str());
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boost::filesystem::path defaultsFile = "Schema/Components/" + componentName + ".xml";
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parser.parse(defaultsFile.string().c_str());
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auto doc = parser.getDocument();
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if (doc == nullptr) {
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LOG_ERROR("%s not found! Skipping.", defaultsFile.string().c_str());
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continue;
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}
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// Find the node in the components namespace matching the component name
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std::string tagName = "c:" + componentName;
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auto rootNodes = doc->getElementsByTagName(XS::ToXMLCh(tagName));
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if (rootNodes->getLength() == 0) {
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LOG_ERROR("Couldn't find defaults for component \"%s\"! Skipping.", componentName.c_str());
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continue;
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}
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auto componentElement = dynamic_cast<DOMElement*>(rootNodes->item(0));
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// Fill the default value buffer with values
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for (auto& field : ci.second.FieldOffsets) {
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std::string fieldName = field.first;
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auto fieldNodes = componentElement->getElementsByTagName(XS::ToXMLCh(fieldName));
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auto fieldNode = fieldNodes->item(0);
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if (fieldNode == nullptr) {
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LOG_ERROR("Defaults for component \"%s\" is missing field \"%s\"!", componentName.c_str(), fieldName.c_str());
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continue;
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}
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auto fieldElement = dynamic_cast<DOMElement*>(fieldNode);
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std::string fieldType = ci.second.FieldTypes.at(fieldName);
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unsigned int fieldOffset = ci.second.FieldOffsets.at(fieldName);
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char* data = ci.second.Defaults.get() + fieldOffset;
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// Handle potential field attributes
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if (fieldElement->hasAttributes()) {
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std::map<std::string, std::string> attributes;
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auto attributeMap = fieldElement->getAttributes();
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for (int i = 0; i < attributeMap->getLength(); ++i) {
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auto attribItem = attributeMap->item(i);
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attributes[XS::ToString(attribItem->getNodeName())] = XS::ToString(attribItem->getNodeValue());
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}
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EntityFile::WriteAttributeData(data, fieldType, attributes);
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}
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// Handle potential field values
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auto childNode = fieldElement->getFirstChild();
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if (childNode != nullptr && childNode->getNodeType() == DOMNode::TEXT_NODE) {
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char* cstrValue = XMLString::transcode(childNode->getNodeValue());
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EntityFile::WriteValueData(data, fieldType, cstrValue);
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XMLString::release(&cstrValue);
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}
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}
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}
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}
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