904 lines
44 KiB
C++
904 lines
44 KiB
C++
#include <hex/lang/evaluator.hpp>
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#include <hex/lang/token.hpp>
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#include <hex/helpers/utils.hpp>
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#include <hex/api/content_registry.hpp>
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#include <bit>
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#include <algorithm>
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#include <unistd.h>
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namespace hex::lang {
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ASTNodeIntegerLiteral* Evaluator::evaluateScopeResolution(ASTNodeScopeResolution *node) {
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ASTNode *currScope = nullptr;
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for (const auto &identifier : node->getPath()) {
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if (currScope == nullptr) {
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if (!this->m_types.contains(identifier))
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break;
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currScope = this->m_types[identifier.data()];
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} else if (auto enumNode = dynamic_cast<ASTNodeEnum*>(currScope); enumNode != nullptr) {
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if (!enumNode->getEntries().contains(identifier))
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break;
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else
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return evaluateMathematicalExpression(static_cast<ASTNodeNumericExpression*>(enumNode->getEntries().at(identifier)));
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}
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}
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this->getConsole().abortEvaluation("failed to find identifier");
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}
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PatternData* Evaluator::findPattern(std::vector<PatternData*> currMembers, const std::vector<std::string> &path) {
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PatternData *currPattern = nullptr;
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for (const auto &identifier : path) {
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if (identifier == "parent") {
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if (currPattern == nullptr) {
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if (!currMembers.empty())
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currPattern = this->m_currMemberScope.back();
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if (currPattern == nullptr)
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this->getConsole().abortEvaluation("attempted to get parent of global namespace");
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}
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auto parent = currPattern->getParent();
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if (parent == nullptr) {
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this->getConsole().abortEvaluation(hex::format("no parent available for identifier '{0}'", currPattern->getVariableName()));
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} else {
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currPattern = parent;
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}
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} else {
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if (currPattern != nullptr) {
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if (auto structPattern = dynamic_cast<PatternDataStruct*>(currPattern); structPattern != nullptr)
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currMembers = structPattern->getMembers();
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else if (auto unionPattern = dynamic_cast<PatternDataUnion*>(currPattern); unionPattern != nullptr)
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currMembers = unionPattern->getMembers();
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else
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this->getConsole().abortEvaluation("tried to access member of a non-struct/union type");
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}
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auto candidate = std::find_if(currMembers.begin(), currMembers.end(), [&](auto member) {
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return member->getVariableName() == identifier;
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});
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if (candidate != currMembers.end())
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currPattern = *candidate;
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else
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this->getConsole().abortEvaluation(hex::format("no member found with identifier '{0}'", identifier));
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}
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if (auto pointerPattern = dynamic_cast<PatternDataPointer*>(currPattern); pointerPattern != nullptr)
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currPattern = pointerPattern->getPointedAtPattern();
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}
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return currPattern;
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}
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PatternData* Evaluator::patternFromName(const std::vector<std::string> &path) {
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PatternData *currPattern = nullptr;
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// Local member access
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currPattern = this->findPattern(*this->m_currMembers.back(), path);
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// If no local member was found, try globally
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if (currPattern == nullptr) {
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currPattern = this->findPattern(this->m_globalMembers, path);
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}
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// If still no pattern was found, the path is invalid
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if (currPattern == nullptr)
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this->getConsole().abortEvaluation(hex::format("no identifier with name '{}' was found", hex::combineStrings(path, ".")));
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return currPattern;
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/*std::vector<PatternData*> currMembers;
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if (!this->m_currMembers.empty())
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std::copy(this->m_currMembers.back()->begin(), this->m_currMembers.back()->end(), std::back_inserter(currMembers));
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if (!this->m_globalMembers.empty())
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std::copy(this->m_globalMembers.begin(), this->m_globalMembers.end(), std::back_inserter(currMembers));
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PatternData *currPattern = nullptr;
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for (u32 i = 0; i < path.size(); i++) {
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const auto &identifier = path[i];
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if (auto structPattern = dynamic_cast<PatternDataStruct*>(currPattern); structPattern != nullptr)
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currMembers = structPattern->getMembers();
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else if (auto unionPattern = dynamic_cast<PatternDataUnion*>(currPattern); unionPattern != nullptr)
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currMembers = unionPattern->getMembers();
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else if (auto pointerPattern = dynamic_cast<PatternDataPointer*>(currPattern); pointerPattern != nullptr) {
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currPattern = pointerPattern->getPointedAtPattern();
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i--;
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continue;
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}
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else if (currPattern != nullptr)
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this->getConsole().abortEvaluation("tried to access member of a non-struct/union type");
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auto candidate = std::find_if(currMembers.begin(), currMembers.end(), [&](auto member) {
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return member->getVariableName() == identifier;
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});
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if (candidate != currMembers.end())
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currPattern = *candidate;
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else
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this->getConsole().abortEvaluation(hex::format("could not find identifier '{0}'", identifier.c_str()));
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}
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if (auto pointerPattern = dynamic_cast<PatternDataPointer*>(currPattern); pointerPattern != nullptr)
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currPattern = pointerPattern->getPointedAtPattern();
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return currPattern;*/
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}
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ASTNodeIntegerLiteral* Evaluator::evaluateRValue(ASTNodeRValue *node) {
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if (this->m_currMembers.empty() && this->m_globalMembers.empty())
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this->getConsole().abortEvaluation("no variables available");
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if (node->getPath().size() == 1 && node->getPath()[0] == "$")
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return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned64Bit, this->m_currOffset });
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auto currPattern = this->patternFromName(node->getPath());
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if (auto unsignedPattern = dynamic_cast<PatternDataUnsigned*>(currPattern); unsignedPattern != nullptr) {
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u8 value[unsignedPattern->getSize()];
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this->m_provider->read(unsignedPattern->getOffset(), value, unsignedPattern->getSize());
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switch (unsignedPattern->getSize()) {
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case 1: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned8Bit, hex::changeEndianess(*reinterpret_cast<u8*>(value), 1, unsignedPattern->getEndian()) });
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case 2: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned16Bit, hex::changeEndianess(*reinterpret_cast<u16*>(value), 2, unsignedPattern->getEndian()) });
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case 4: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned32Bit, hex::changeEndianess(*reinterpret_cast<u32*>(value), 4, unsignedPattern->getEndian()) });
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case 8: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned64Bit, hex::changeEndianess(*reinterpret_cast<u64*>(value), 8, unsignedPattern->getEndian()) });
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case 16: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned128Bit, hex::changeEndianess(*reinterpret_cast<u128*>(value), 16, unsignedPattern->getEndian()) });
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default: this->getConsole().abortEvaluation("invalid rvalue size");
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}
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} else if (auto signedPattern = dynamic_cast<PatternDataSigned*>(currPattern); signedPattern != nullptr) {
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u8 value[signedPattern->getSize()];
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this->m_provider->read(signedPattern->getOffset(), value, signedPattern->getSize());
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switch (signedPattern->getSize()) {
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case 1: return new ASTNodeIntegerLiteral({ Token::ValueType::Signed8Bit, hex::changeEndianess(*reinterpret_cast<s8*>(value), 1, signedPattern->getEndian()) });
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case 2: return new ASTNodeIntegerLiteral({ Token::ValueType::Signed16Bit, hex::changeEndianess(*reinterpret_cast<s16*>(value), 2, signedPattern->getEndian()) });
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case 4: return new ASTNodeIntegerLiteral({ Token::ValueType::Signed32Bit, hex::changeEndianess(*reinterpret_cast<s32*>(value), 4, signedPattern->getEndian()) });
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case 8: return new ASTNodeIntegerLiteral({ Token::ValueType::Signed64Bit, hex::changeEndianess(*reinterpret_cast<s64*>(value), 8, signedPattern->getEndian()) });
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case 16: return new ASTNodeIntegerLiteral({ Token::ValueType::Signed128Bit, hex::changeEndianess(*reinterpret_cast<s128*>(value), 16, signedPattern->getEndian()) });
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default: this->getConsole().abortEvaluation("invalid rvalue size");
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}
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} else if (auto enumPattern = dynamic_cast<PatternDataEnum*>(currPattern); enumPattern != nullptr) {
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u8 value[enumPattern->getSize()];
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this->m_provider->read(enumPattern->getOffset(), value, enumPattern->getSize());
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switch (enumPattern->getSize()) {
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case 1: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned8Bit, hex::changeEndianess(*reinterpret_cast<u8*>(value), 1, enumPattern->getEndian()) });
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case 2: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned16Bit, hex::changeEndianess(*reinterpret_cast<u16*>(value), 2, enumPattern->getEndian()) });
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case 4: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned32Bit, hex::changeEndianess(*reinterpret_cast<u32*>(value), 4, enumPattern->getEndian()) });
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case 8: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned64Bit, hex::changeEndianess(*reinterpret_cast<u64*>(value), 8, enumPattern->getEndian()) });
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case 16: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned128Bit, hex::changeEndianess(*reinterpret_cast<u128*>(value), 16, enumPattern->getEndian()) });
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default: this->getConsole().abortEvaluation("invalid rvalue size");
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}
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} else
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this->getConsole().abortEvaluation("tried to use non-integer value in numeric expression");
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}
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ASTNode* Evaluator::evaluateFunctionCall(ASTNodeFunctionCall *node) {
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std::vector<ASTNode*> evaluatedParams;
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ON_SCOPE_EXIT {
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for (auto ¶m : evaluatedParams)
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delete param;
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};
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for (auto ¶m : node->getParams()) {
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if (auto numericExpression = dynamic_cast<ASTNodeNumericExpression*>(param); numericExpression != nullptr)
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evaluatedParams.push_back(this->evaluateMathematicalExpression(numericExpression));
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else if (auto stringLiteral = dynamic_cast<ASTNodeStringLiteral*>(param); stringLiteral != nullptr)
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evaluatedParams.push_back(stringLiteral->clone());
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}
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if (!ContentRegistry::PatternLanguageFunctions::getEntries().contains(node->getFunctionName().data()))
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this->getConsole().abortEvaluation(hex::format("no function named '{0}' found", node->getFunctionName().data()));
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auto &function = ContentRegistry::PatternLanguageFunctions::getEntries()[node->getFunctionName().data()];
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if (function.parameterCount == ContentRegistry::PatternLanguageFunctions::UnlimitedParameters) {
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; // Don't check parameter count
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}
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else if (function.parameterCount & ContentRegistry::PatternLanguageFunctions::LessParametersThan) {
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if (evaluatedParams.size() >= (function.parameterCount & ~ContentRegistry::PatternLanguageFunctions::LessParametersThan))
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this->getConsole().abortEvaluation(hex::format("too many parameters for function '{0}'. Expected {1}", node->getFunctionName().data(), function.parameterCount & ~ContentRegistry::PatternLanguageFunctions::LessParametersThan));
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} else if (function.parameterCount & ContentRegistry::PatternLanguageFunctions::MoreParametersThan) {
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if (evaluatedParams.size() <= (function.parameterCount & ~ContentRegistry::PatternLanguageFunctions::MoreParametersThan))
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this->getConsole().abortEvaluation(hex::format("too few parameters for function '{0}'. Expected {1}", node->getFunctionName().data(), function.parameterCount & ~ContentRegistry::PatternLanguageFunctions::MoreParametersThan));
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} else if (function.parameterCount != evaluatedParams.size()) {
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this->getConsole().abortEvaluation(hex::format("invalid number of parameters for function '{0}'. Expected {1}", node->getFunctionName().data(), function.parameterCount));
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}
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return function.func(*this, evaluatedParams);
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}
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#define FLOAT_BIT_OPERATION(name) \
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auto name(hex::floating_point auto left, auto right) { throw std::runtime_error(""); return 0; } \
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auto name(auto left, hex::floating_point auto right) { throw std::runtime_error(""); return 0; } \
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auto name(hex::floating_point auto left, hex::floating_point auto right) { throw std::runtime_error(""); return 0; } \
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auto name(hex::integral auto left, hex::integral auto right)
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namespace {
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FLOAT_BIT_OPERATION(shiftLeft) {
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return left << right;
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}
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FLOAT_BIT_OPERATION(shiftRight) {
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return left >> right;
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}
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FLOAT_BIT_OPERATION(bitAnd) {
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return left & right;
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}
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FLOAT_BIT_OPERATION(bitOr) {
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return left | right;
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}
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FLOAT_BIT_OPERATION(bitXor) {
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return left ^ right;
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}
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FLOAT_BIT_OPERATION(bitNot) {
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return ~right;
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}
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FLOAT_BIT_OPERATION(modulus) {
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return left % right;
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}
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}
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ASTNodeIntegerLiteral* Evaluator::evaluateOperator(ASTNodeIntegerLiteral *left, ASTNodeIntegerLiteral *right, Token::Operator op) {
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auto newType = [&] {
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#define CHECK_TYPE(type) if (left->getType() == (type) || right->getType() == (type)) return (type)
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#define DEFAULT_TYPE(type) return (type)
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if (left->getType() == Token::ValueType::Any && right->getType() != Token::ValueType::Any)
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return right->getType();
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if (left->getType() != Token::ValueType::Any && right->getType() == Token::ValueType::Any)
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return left->getType();
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CHECK_TYPE(Token::ValueType::Double);
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CHECK_TYPE(Token::ValueType::Float);
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CHECK_TYPE(Token::ValueType::Unsigned128Bit);
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CHECK_TYPE(Token::ValueType::Signed128Bit);
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CHECK_TYPE(Token::ValueType::Unsigned64Bit);
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CHECK_TYPE(Token::ValueType::Signed64Bit);
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CHECK_TYPE(Token::ValueType::Unsigned32Bit);
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CHECK_TYPE(Token::ValueType::Signed32Bit);
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CHECK_TYPE(Token::ValueType::Unsigned16Bit);
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CHECK_TYPE(Token::ValueType::Signed16Bit);
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CHECK_TYPE(Token::ValueType::Unsigned8Bit);
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CHECK_TYPE(Token::ValueType::Signed8Bit);
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CHECK_TYPE(Token::ValueType::Character);
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CHECK_TYPE(Token::ValueType::Boolean);
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DEFAULT_TYPE(Token::ValueType::Signed32Bit);
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#undef CHECK_TYPE
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#undef DEFAULT_TYPE
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}();
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try {
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return std::visit([&](auto &&leftValue, auto &&rightValue) -> ASTNodeIntegerLiteral * {
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switch (op) {
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case Token::Operator::Plus:
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return new ASTNodeIntegerLiteral({ newType, leftValue + rightValue });
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case Token::Operator::Minus:
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return new ASTNodeIntegerLiteral({ newType, leftValue - rightValue });
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case Token::Operator::Star:
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return new ASTNodeIntegerLiteral({ newType, leftValue * rightValue });
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case Token::Operator::Slash:
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if (rightValue == 0)
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this->getConsole().abortEvaluation("Division by zero");
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return new ASTNodeIntegerLiteral({ newType, leftValue / rightValue });
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case Token::Operator::Percent:
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if (rightValue == 0)
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this->getConsole().abortEvaluation("Division by zero");
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return new ASTNodeIntegerLiteral({ newType, modulus(leftValue, rightValue) });
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case Token::Operator::ShiftLeft:
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return new ASTNodeIntegerLiteral({ newType, shiftLeft(leftValue, rightValue) });
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case Token::Operator::ShiftRight:
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return new ASTNodeIntegerLiteral({ newType, shiftRight(leftValue, rightValue) });
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case Token::Operator::BitAnd:
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return new ASTNodeIntegerLiteral({ newType, bitAnd(leftValue, rightValue) });
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case Token::Operator::BitXor:
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return new ASTNodeIntegerLiteral({ newType, bitXor(leftValue, rightValue) });
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case Token::Operator::BitOr:
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return new ASTNodeIntegerLiteral({ newType, bitOr(leftValue, rightValue) });
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case Token::Operator::BitNot:
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return new ASTNodeIntegerLiteral({ newType, bitNot(leftValue, rightValue) });
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case Token::Operator::BoolEquals:
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return new ASTNodeIntegerLiteral({ newType, leftValue == rightValue });
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case Token::Operator::BoolNotEquals:
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return new ASTNodeIntegerLiteral({ newType, leftValue != rightValue });
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case Token::Operator::BoolGreaterThan:
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return new ASTNodeIntegerLiteral({ newType, leftValue > rightValue });
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case Token::Operator::BoolLessThan:
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return new ASTNodeIntegerLiteral({ newType, leftValue < rightValue });
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case Token::Operator::BoolGreaterThanOrEquals:
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return new ASTNodeIntegerLiteral({ newType, leftValue >= rightValue });
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case Token::Operator::BoolLessThanOrEquals:
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return new ASTNodeIntegerLiteral({ newType, leftValue <= rightValue });
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case Token::Operator::BoolAnd:
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return new ASTNodeIntegerLiteral({ newType, leftValue && rightValue });
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case Token::Operator::BoolXor:
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return new ASTNodeIntegerLiteral({ newType, leftValue && !rightValue || !leftValue && rightValue });
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case Token::Operator::BoolOr:
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return new ASTNodeIntegerLiteral({ newType, leftValue || rightValue });
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case Token::Operator::BoolNot:
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return new ASTNodeIntegerLiteral({ newType, !rightValue });
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default:
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this->getConsole().abortEvaluation("invalid operator used in mathematical expression");
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}
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}, left->getValue(), right->getValue());
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} catch (std::runtime_error &e) {
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this->getConsole().abortEvaluation("bitwise operations on floating point numbers are forbidden");
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}
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}
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ASTNodeIntegerLiteral* Evaluator::evaluateOperand(ASTNode *node) {
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if (auto exprLiteral = dynamic_cast<ASTNodeIntegerLiteral*>(node); exprLiteral != nullptr)
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return exprLiteral;
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else if (auto exprExpression = dynamic_cast<ASTNodeNumericExpression*>(node); exprExpression != nullptr)
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return evaluateMathematicalExpression(exprExpression);
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else if (auto exprRvalue = dynamic_cast<ASTNodeRValue*>(node); exprRvalue != nullptr)
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return evaluateRValue(exprRvalue);
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else if (auto exprScopeResolution = dynamic_cast<ASTNodeScopeResolution*>(node); exprScopeResolution != nullptr)
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return evaluateScopeResolution(exprScopeResolution);
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else if (auto exprTernary = dynamic_cast<ASTNodeTernaryExpression*>(node); exprTernary != nullptr)
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return evaluateTernaryExpression(exprTernary);
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else if (auto exprFunctionCall = dynamic_cast<ASTNodeFunctionCall*>(node); exprFunctionCall != nullptr) {
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auto returnValue = evaluateFunctionCall(exprFunctionCall);
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if (returnValue == nullptr)
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this->getConsole().abortEvaluation("function returning void used in expression");
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else if (auto integerNode = dynamic_cast<ASTNodeIntegerLiteral*>(returnValue); integerNode != nullptr)
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return integerNode;
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else
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this->getConsole().abortEvaluation("function not returning a numeric value used in expression");
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}
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else
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this->getConsole().abortEvaluation("invalid operand");
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}
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ASTNodeIntegerLiteral* Evaluator::evaluateTernaryExpression(ASTNodeTernaryExpression *node) {
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switch (node->getOperator()) {
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case Token::Operator::TernaryConditional: {
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auto condition = this->evaluateOperand(node->getFirstOperand());
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ON_SCOPE_EXIT { delete condition; };
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if (std::visit([](auto &&value){ return value != 0; }, condition->getValue()))
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return this->evaluateOperand(node->getSecondOperand());
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else
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return this->evaluateOperand(node->getThirdOperand());
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}
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default:
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this->getConsole().abortEvaluation("invalid operator used in ternary expression");
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}
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}
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ASTNodeIntegerLiteral* Evaluator::evaluateMathematicalExpression(ASTNodeNumericExpression *node) {
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auto leftInteger = this->evaluateOperand(node->getLeftOperand());
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auto rightInteger = this->evaluateOperand(node->getRightOperand());
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return evaluateOperator(leftInteger, rightInteger, node->getOperator());
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}
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PatternData* Evaluator::evaluateAttributes(ASTNode *currNode, PatternData *currPattern) {
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auto attributableNode = dynamic_cast<Attributable*>(currNode);
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if (attributableNode == nullptr)
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this->getConsole().abortEvaluation("attributes applied to invalid expression");
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auto handleVariableAttributes = [this, &currPattern](auto attribute, auto value) {
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if (attribute == "color" && value.has_value())
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currPattern->setColor(hex::changeEndianess(u32(strtoul(value->data(), nullptr, 16)) << 8, std::endian::big));
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else if (attribute == "name" && value.has_value())
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currPattern->setVariableName(value->data());
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else if (attribute == "comment" && value.has_value())
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currPattern->setComment(value->data());
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else
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this->getConsole().abortEvaluation("unknown or invalid attribute");
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};
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auto &attributes = attributableNode->getAttributes();
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if (attributes.empty())
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return currPattern;
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if (auto variableDeclNode = dynamic_cast<ASTNodeVariableDecl*>(currNode); variableDeclNode != nullptr) {
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for (auto &attribute : attributes)
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handleVariableAttributes(attribute->getAttribute(), attribute->getValue());
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} else if (auto arrayDeclNode = dynamic_cast<ASTNodeArrayVariableDecl*>(currNode); arrayDeclNode != nullptr) {
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for (auto &attribute : attributes)
|
|
handleVariableAttributes(attribute->getAttribute(), attribute->getValue());
|
|
} else if (auto pointerDeclNode = dynamic_cast<ASTNodePointerVariableDecl*>(currNode); pointerDeclNode != nullptr) {
|
|
for (auto &attribute : attributes)
|
|
handleVariableAttributes(attribute->getAttribute(), attribute->getValue());
|
|
} else if (auto structNode = dynamic_cast<ASTNodeStruct*>(currNode); structNode != nullptr) {
|
|
this->getConsole().abortEvaluation("unknown or invalid attribute");
|
|
} else if (auto unionNode = dynamic_cast<ASTNodeUnion*>(currNode); unionNode != nullptr) {
|
|
this->getConsole().abortEvaluation("unknown or invalid attribute");
|
|
} else if (auto enumNode = dynamic_cast<ASTNodeEnum*>(currNode); enumNode != nullptr) {
|
|
this->getConsole().abortEvaluation("unknown or invalid attribute");
|
|
} else if (auto bitfieldNode = dynamic_cast<ASTNodeBitfield*>(currNode); bitfieldNode != nullptr) {
|
|
this->getConsole().abortEvaluation("unknown or invalid attribute");
|
|
} else
|
|
this->getConsole().abortEvaluation("attributes applied to invalid expression");
|
|
|
|
return currPattern;
|
|
}
|
|
|
|
PatternData* Evaluator::evaluateBuiltinType(ASTNodeBuiltinType *node) {
|
|
auto &type = node->getType();
|
|
auto typeSize = Token::getTypeSize(type);
|
|
|
|
PatternData *pattern;
|
|
|
|
if (type == Token::ValueType::Character)
|
|
pattern = new PatternDataCharacter(this->m_currOffset);
|
|
else if (type == Token::ValueType::Boolean)
|
|
pattern = new PatternDataBoolean(this->m_currOffset);
|
|
else if (Token::isUnsigned(type))
|
|
pattern = new PatternDataUnsigned(this->m_currOffset, typeSize);
|
|
else if (Token::isSigned(type))
|
|
pattern = new PatternDataSigned(this->m_currOffset, typeSize);
|
|
else if (Token::isFloatingPoint(type))
|
|
pattern = new PatternDataFloat(this->m_currOffset, typeSize);
|
|
else
|
|
this->getConsole().abortEvaluation("invalid builtin type");
|
|
|
|
this->m_currOffset += typeSize;
|
|
|
|
pattern->setTypeName(Token::getTypeName(type));
|
|
pattern->setEndian(this->getCurrentEndian());
|
|
|
|
return pattern;
|
|
}
|
|
|
|
void Evaluator::evaluateMember(ASTNode *node, std::vector<PatternData*> &currMembers, bool increaseOffset) {
|
|
auto startOffset = this->m_currOffset;
|
|
|
|
if (auto memberVariableNode = dynamic_cast<ASTNodeVariableDecl*>(node); memberVariableNode != nullptr)
|
|
currMembers.push_back(this->evaluateVariable(memberVariableNode));
|
|
else if (auto memberArrayNode = dynamic_cast<ASTNodeArrayVariableDecl*>(node); memberArrayNode != nullptr)
|
|
currMembers.push_back(this->evaluateArray(memberArrayNode));
|
|
else if (auto memberPointerNode = dynamic_cast<ASTNodePointerVariableDecl*>(node); memberPointerNode != nullptr)
|
|
currMembers.push_back(this->evaluatePointer(memberPointerNode));
|
|
else if (auto conditionalNode = dynamic_cast<ASTNodeConditionalStatement*>(node); conditionalNode != nullptr) {
|
|
auto condition = this->evaluateMathematicalExpression(static_cast<ASTNodeNumericExpression*>(conditionalNode->getCondition()));
|
|
|
|
if (std::visit([](auto &&value) { return value != 0; }, condition->getValue())) {
|
|
for (auto &statement : conditionalNode->getTrueBody()) {
|
|
this->evaluateMember(statement, currMembers, increaseOffset);
|
|
}
|
|
} else {
|
|
for (auto &statement : conditionalNode->getFalseBody()) {
|
|
this->evaluateMember(statement, currMembers, increaseOffset);
|
|
}
|
|
}
|
|
|
|
delete condition;
|
|
}
|
|
else
|
|
this->getConsole().abortEvaluation("invalid struct member");
|
|
|
|
if (!increaseOffset)
|
|
this->m_currOffset = startOffset;
|
|
}
|
|
|
|
PatternData* Evaluator::evaluateStruct(ASTNodeStruct *node) {
|
|
std::vector<PatternData*> memberPatterns;
|
|
|
|
auto structPattern = new PatternDataStruct(this->m_currOffset, 0);
|
|
structPattern->setParent(this->m_currMemberScope.back());
|
|
|
|
this->m_currMembers.push_back(&memberPatterns);
|
|
this->m_currMemberScope.push_back(structPattern);
|
|
ON_SCOPE_EXIT {
|
|
this->m_currMembers.pop_back();
|
|
this->m_currMemberScope.pop_back();
|
|
};
|
|
|
|
this->m_currRecursionDepth++;
|
|
if (this->m_currRecursionDepth > this->m_recursionLimit)
|
|
this->getConsole().abortEvaluation(hex::format("evaluation depth exceeds maximum of {0}. Use #pragma eval_depth <depth> to increase the maximum", this->m_recursionLimit));
|
|
|
|
auto startOffset = this->m_currOffset;
|
|
for (auto &member : node->getMembers()) {
|
|
this->evaluateMember(member, memberPatterns, true);
|
|
structPattern->setMembers(memberPatterns);
|
|
}
|
|
structPattern->setSize(this->m_currOffset - startOffset);
|
|
|
|
this->m_currRecursionDepth--;
|
|
|
|
return this->evaluateAttributes(node, structPattern);
|
|
}
|
|
|
|
PatternData* Evaluator::evaluateUnion(ASTNodeUnion *node) {
|
|
std::vector<PatternData*> memberPatterns;
|
|
|
|
auto unionPattern = new PatternDataUnion(this->m_currOffset, 0);
|
|
unionPattern->setParent(this->m_currMemberScope.back());
|
|
|
|
this->m_currMembers.push_back(&memberPatterns);
|
|
this->m_currMemberScope.push_back(unionPattern);
|
|
ON_SCOPE_EXIT {
|
|
this->m_currMembers.pop_back();
|
|
this->m_currMemberScope.pop_back();
|
|
};
|
|
|
|
auto startOffset = this->m_currOffset;
|
|
|
|
this->m_currRecursionDepth++;
|
|
if (this->m_currRecursionDepth > this->m_recursionLimit)
|
|
this->getConsole().abortEvaluation(hex::format("evaluation depth exceeds maximum of {0}. Use #pragma eval_depth <depth> to increase the maximum", this->m_recursionLimit));
|
|
|
|
for (auto &member : node->getMembers()) {
|
|
this->evaluateMember(member, memberPatterns, false);
|
|
unionPattern->setMembers(memberPatterns);
|
|
}
|
|
|
|
this->m_currRecursionDepth--;
|
|
|
|
size_t size = 0;
|
|
for (const auto &pattern : memberPatterns)
|
|
size = std::max(size, pattern->getSize());
|
|
unionPattern->setSize(size);
|
|
|
|
this->m_currOffset += size;
|
|
|
|
return this->evaluateAttributes(node, unionPattern);
|
|
}
|
|
|
|
PatternData* Evaluator::evaluateEnum(ASTNodeEnum *node) {
|
|
std::vector<std::pair<Token::IntegerLiteral, std::string>> entryPatterns;
|
|
|
|
auto underlyingType = dynamic_cast<ASTNodeTypeDecl*>(node->getUnderlyingType());
|
|
if (underlyingType == nullptr)
|
|
this->getConsole().abortEvaluation("enum underlying type was not ASTNodeTypeDecl. This is a bug");
|
|
|
|
size_t size;
|
|
auto builtinUnderlyingType = dynamic_cast<ASTNodeBuiltinType*>(underlyingType->getType());
|
|
if (builtinUnderlyingType != nullptr)
|
|
size = Token::getTypeSize(builtinUnderlyingType->getType());
|
|
else
|
|
this->getConsole().abortEvaluation("invalid enum underlying type");
|
|
|
|
auto startOffset = this->m_currOffset;
|
|
for (auto &[name, value] : node->getEntries()) {
|
|
auto expression = dynamic_cast<ASTNodeNumericExpression*>(value);
|
|
if (expression == nullptr)
|
|
this->getConsole().abortEvaluation("invalid expression in enum value");
|
|
|
|
auto valueNode = evaluateMathematicalExpression(expression);
|
|
ON_SCOPE_EXIT { delete valueNode; };
|
|
|
|
entryPatterns.emplace_back(Token::castTo(builtinUnderlyingType->getType(), valueNode->getValue()), name);
|
|
}
|
|
|
|
this->m_currOffset += size;
|
|
|
|
auto enumPattern = new PatternDataEnum(startOffset, size);
|
|
enumPattern->setSize(size);
|
|
enumPattern->setEnumValues(entryPatterns);
|
|
|
|
return this->evaluateAttributes(node, enumPattern);
|
|
}
|
|
|
|
PatternData* Evaluator::evaluateBitfield(ASTNodeBitfield *node) {
|
|
std::vector<std::pair<std::string, size_t>> entryPatterns;
|
|
|
|
auto startOffset = this->m_currOffset;
|
|
size_t bits = 0;
|
|
for (auto &[name, value] : node->getEntries()) {
|
|
auto expression = dynamic_cast<ASTNodeNumericExpression*>(value);
|
|
if (expression == nullptr)
|
|
this->getConsole().abortEvaluation("invalid expression in bitfield field size");
|
|
|
|
auto valueNode = evaluateMathematicalExpression(expression);
|
|
ON_SCOPE_EXIT { delete valueNode; };
|
|
|
|
auto fieldBits = std::visit([this, node, type = valueNode->getType()] (auto &&value) {
|
|
if (Token::isFloatingPoint(type))
|
|
this->getConsole().abortEvaluation("bitfield entry size must be an integer value");
|
|
return static_cast<s128>(value);
|
|
}, valueNode->getValue());
|
|
|
|
if (fieldBits > 64 || fieldBits <= 0)
|
|
this->getConsole().abortEvaluation("bitfield entry must occupy between 1 and 64 bits");
|
|
|
|
bits += fieldBits;
|
|
|
|
entryPatterns.emplace_back(name, fieldBits);
|
|
}
|
|
|
|
size_t size = (bits + 7) / 8;
|
|
this->m_currOffset += size;
|
|
|
|
auto bitfieldPattern = new PatternDataBitfield(startOffset, size);
|
|
bitfieldPattern->setFields(entryPatterns);
|
|
|
|
return this->evaluateAttributes(node, bitfieldPattern);
|
|
}
|
|
|
|
PatternData* Evaluator::evaluateType(ASTNodeTypeDecl *node) {
|
|
auto type = node->getType();
|
|
|
|
if (type == nullptr)
|
|
type = this->m_types[node->getName().data()];
|
|
|
|
this->m_endianStack.push_back(node->getEndian().value_or(this->m_defaultDataEndian));
|
|
|
|
PatternData *pattern;
|
|
|
|
if (auto builtinTypeNode = dynamic_cast<ASTNodeBuiltinType*>(type); builtinTypeNode != nullptr)
|
|
return this->evaluateBuiltinType(builtinTypeNode);
|
|
else if (auto typeDeclNode = dynamic_cast<ASTNodeTypeDecl*>(type); typeDeclNode != nullptr)
|
|
pattern = this->evaluateType(typeDeclNode);
|
|
else if (auto structNode = dynamic_cast<ASTNodeStruct*>(type); structNode != nullptr)
|
|
pattern = this->evaluateStruct(structNode);
|
|
else if (auto unionNode = dynamic_cast<ASTNodeUnion*>(type); unionNode != nullptr)
|
|
pattern = this->evaluateUnion(unionNode);
|
|
else if (auto enumNode = dynamic_cast<ASTNodeEnum*>(type); enumNode != nullptr)
|
|
pattern = this->evaluateEnum(enumNode);
|
|
else if (auto bitfieldNode = dynamic_cast<ASTNodeBitfield*>(type); bitfieldNode != nullptr)
|
|
pattern = this->evaluateBitfield(bitfieldNode);
|
|
else
|
|
this->getConsole().abortEvaluation("type could not be evaluated");
|
|
|
|
if (!node->getName().empty())
|
|
pattern->setTypeName(node->getName().data());
|
|
|
|
pattern->setEndian(this->getCurrentEndian());
|
|
|
|
this->m_endianStack.pop_back();
|
|
|
|
return pattern;
|
|
}
|
|
|
|
PatternData* Evaluator::evaluateVariable(ASTNodeVariableDecl *node) {
|
|
|
|
if (auto offset = dynamic_cast<ASTNodeNumericExpression*>(node->getPlacementOffset()); offset != nullptr) {
|
|
auto valueNode = evaluateMathematicalExpression(offset);
|
|
ON_SCOPE_EXIT { delete valueNode; };
|
|
|
|
this->m_currOffset = std::visit([this, node, type = valueNode->getType()] (auto &&value) {
|
|
if (Token::isFloatingPoint(type))
|
|
this->getConsole().abortEvaluation("placement offset must be an integer value");
|
|
return static_cast<u64>(value);
|
|
}, valueNode->getValue());
|
|
}
|
|
if (this->m_currOffset >= this->m_provider->getActualSize())
|
|
this->getConsole().abortEvaluation("variable placed out of range");
|
|
|
|
PatternData *pattern;
|
|
if (auto typeDecl = dynamic_cast<ASTNodeTypeDecl*>(node->getType()); typeDecl != nullptr)
|
|
pattern = this->evaluateType(typeDecl);
|
|
else if (auto builtinTypeDecl = dynamic_cast<ASTNodeBuiltinType*>(node->getType()); builtinTypeDecl != nullptr)
|
|
pattern = this->evaluateBuiltinType(builtinTypeDecl);
|
|
else
|
|
this->getConsole().abortEvaluation("ASTNodeVariableDecl had an invalid type. This is a bug!");
|
|
|
|
pattern->setVariableName(node->getName().data());
|
|
|
|
return this->evaluateAttributes(node, pattern);
|
|
}
|
|
|
|
PatternData* Evaluator::evaluateArray(ASTNodeArrayVariableDecl *node) {
|
|
|
|
if (auto offset = dynamic_cast<ASTNodeNumericExpression*>(node->getPlacementOffset()); offset != nullptr) {
|
|
auto valueNode = evaluateMathematicalExpression(offset);
|
|
ON_SCOPE_EXIT { delete valueNode; };
|
|
|
|
this->m_currOffset = std::visit([this, node, type = valueNode->getType()] (auto &&value) {
|
|
if (Token::isFloatingPoint(type))
|
|
this->getConsole().abortEvaluation("placement offset must be an integer value");
|
|
return static_cast<u64>(value);
|
|
}, valueNode->getValue());
|
|
}
|
|
|
|
auto startOffset = this->m_currOffset;
|
|
|
|
ASTNodeIntegerLiteral *valueNode;
|
|
u64 arraySize = 0;
|
|
|
|
if (node->getSize() != nullptr) {
|
|
if (auto sizeNumericExpression = dynamic_cast<ASTNodeNumericExpression*>(node->getSize()); sizeNumericExpression != nullptr)
|
|
valueNode = evaluateMathematicalExpression(sizeNumericExpression);
|
|
else
|
|
this->getConsole().abortEvaluation("array size not a numeric expression");
|
|
|
|
ON_SCOPE_EXIT { delete valueNode; };
|
|
|
|
arraySize = std::visit([this, node, type = valueNode->getType()] (auto &&value) {
|
|
if (Token::isFloatingPoint(type))
|
|
this->getConsole().abortEvaluation("array size must be an integer value");
|
|
return static_cast<u64>(value);
|
|
}, valueNode->getValue());
|
|
|
|
if (auto typeDecl = dynamic_cast<ASTNodeTypeDecl*>(node->getType()); typeDecl != nullptr) {
|
|
if (auto builtinType = dynamic_cast<ASTNodeBuiltinType*>(typeDecl->getType()); builtinType != nullptr) {
|
|
if (builtinType->getType() == Token::ValueType::Padding) {
|
|
this->m_currOffset += arraySize;
|
|
return new PatternDataPadding(startOffset, arraySize);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
u8 currByte = 0x00;
|
|
u64 offset = startOffset;
|
|
|
|
do {
|
|
this->m_provider->read(offset, &currByte, sizeof(u8));
|
|
offset += sizeof(u8);
|
|
arraySize += sizeof(u8);
|
|
} while (currByte != 0x00 && offset < this->m_provider->getSize());
|
|
}
|
|
|
|
std::vector<PatternData*> entries;
|
|
std::optional<u32> color;
|
|
for (s128 i = 0; i < arraySize; i++) {
|
|
PatternData *entry;
|
|
if (auto typeDecl = dynamic_cast<ASTNodeTypeDecl*>(node->getType()); typeDecl != nullptr)
|
|
entry = this->evaluateType(typeDecl);
|
|
else if (auto builtinTypeDecl = dynamic_cast<ASTNodeBuiltinType*>(node->getType()); builtinTypeDecl != nullptr) {
|
|
entry = this->evaluateBuiltinType(builtinTypeDecl);
|
|
}
|
|
else
|
|
this->getConsole().abortEvaluation("ASTNodeVariableDecl had an invalid type. This is a bug!");
|
|
|
|
entry->setVariableName(hex::format("[{0}]", (u64)i));
|
|
entry->setEndian(this->getCurrentEndian());
|
|
|
|
if (!color.has_value())
|
|
color = entry->getColor();
|
|
entry->setColor(color.value_or(0));
|
|
|
|
entries.push_back(entry);
|
|
|
|
if (this->m_currOffset > this->m_provider->getActualSize())
|
|
this->getConsole().abortEvaluation("array exceeds size of file");
|
|
}
|
|
|
|
PatternData *pattern;
|
|
if (entries.empty()) {
|
|
pattern = new PatternDataPadding(startOffset, 0);
|
|
}
|
|
else if (dynamic_cast<PatternDataCharacter*>(entries[0]))
|
|
pattern = new PatternDataString(startOffset, (this->m_currOffset - startOffset), color.value_or(0));
|
|
else {
|
|
if (node->getSize() == nullptr)
|
|
this->getConsole().abortEvaluation("no bounds provided for array");
|
|
auto arrayPattern = new PatternDataArray(startOffset, (this->m_currOffset - startOffset), color.value_or(0));
|
|
|
|
arrayPattern->setEntries(entries);
|
|
pattern = arrayPattern;
|
|
}
|
|
|
|
pattern->setVariableName(node->getName().data());
|
|
|
|
return this->evaluateAttributes(node, pattern);
|
|
}
|
|
|
|
PatternData* Evaluator::evaluatePointer(ASTNodePointerVariableDecl *node) {
|
|
s128 pointerOffset;
|
|
if (auto offset = dynamic_cast<ASTNodeNumericExpression*>(node->getPlacementOffset()); offset != nullptr) {
|
|
auto valueNode = evaluateMathematicalExpression(offset);
|
|
ON_SCOPE_EXIT { delete valueNode; };
|
|
|
|
pointerOffset = std::visit([this, node, type = valueNode->getType()] (auto &&value) {
|
|
if (Token::isFloatingPoint(type))
|
|
this->getConsole().abortEvaluation("pointer offset must be an integer value");
|
|
return static_cast<s128>(value);
|
|
}, valueNode->getValue());
|
|
this->m_currOffset = pointerOffset;
|
|
} else {
|
|
pointerOffset = this->m_currOffset;
|
|
}
|
|
|
|
PatternData *sizeType;
|
|
|
|
auto underlyingType = dynamic_cast<ASTNodeTypeDecl*>(node->getSizeType());
|
|
if (underlyingType == nullptr)
|
|
this->getConsole().abortEvaluation("underlying type is not ASTNodeTypeDecl. This is a bug");
|
|
|
|
if (auto builtinTypeNode = dynamic_cast<ASTNodeBuiltinType*>(underlyingType->getType()); builtinTypeNode != nullptr) {
|
|
sizeType = evaluateBuiltinType(builtinTypeNode);
|
|
} else
|
|
this->getConsole().abortEvaluation("pointer size is not a builtin type");
|
|
|
|
size_t pointerSize = sizeType->getSize();
|
|
|
|
u128 pointedAtOffset = 0;
|
|
this->m_provider->read(pointerOffset, &pointedAtOffset, pointerSize);
|
|
this->m_currOffset = hex::changeEndianess(pointedAtOffset, pointerSize, underlyingType->getEndian().value_or(this->m_defaultDataEndian));
|
|
|
|
delete sizeType;
|
|
|
|
|
|
if (this->m_currOffset > this->m_provider->getActualSize())
|
|
this->getConsole().abortEvaluation("pointer points past the end of the data");
|
|
|
|
PatternData *pointedAt;
|
|
if (auto typeDecl = dynamic_cast<ASTNodeTypeDecl*>(node->getType()); typeDecl != nullptr)
|
|
pointedAt = this->evaluateType(typeDecl);
|
|
else if (auto builtinTypeDecl = dynamic_cast<ASTNodeBuiltinType*>(node->getType()); builtinTypeDecl != nullptr)
|
|
pointedAt = this->evaluateBuiltinType(builtinTypeDecl);
|
|
else
|
|
this->getConsole().abortEvaluation("ASTNodeVariableDecl had an invalid type. This is a bug!");
|
|
|
|
this->m_currOffset = pointerOffset + pointerSize;
|
|
|
|
auto pattern = new PatternDataPointer(pointerOffset, pointerSize);
|
|
|
|
pattern->setVariableName(node->getName().data());
|
|
pattern->setEndian(this->getCurrentEndian());
|
|
pattern->setPointedAtPattern(pointedAt);
|
|
|
|
return this->evaluateAttributes(node, pattern);
|
|
}
|
|
|
|
std::optional<std::vector<PatternData*>> Evaluator::evaluate(const std::vector<ASTNode *> &ast) {
|
|
|
|
this->m_globalMembers.clear();
|
|
this->m_types.clear();
|
|
this->m_endianStack.clear();
|
|
this->m_currOffset = 0;
|
|
|
|
try {
|
|
for (const auto& node : ast) {
|
|
if (auto typeDeclNode = dynamic_cast<ASTNodeTypeDecl*>(node); typeDeclNode != nullptr) {
|
|
if (this->m_types[typeDeclNode->getName().data()] == nullptr)
|
|
this->m_types[typeDeclNode->getName().data()] = typeDeclNode->getType();
|
|
}
|
|
}
|
|
|
|
for (const auto& [name, node] : this->m_types) {
|
|
if (auto typeDeclNode = static_cast<ASTNodeTypeDecl*>(node); typeDeclNode->getType() == nullptr)
|
|
this->getConsole().abortEvaluation(hex::format("unresolved type '{}'", name));
|
|
}
|
|
|
|
for (const auto& node : ast) {
|
|
this->m_currMembers.clear();
|
|
this->m_currMemberScope.clear();
|
|
this->m_currMemberScope.push_back(nullptr);
|
|
|
|
this->m_endianStack.push_back(this->m_defaultDataEndian);
|
|
this->m_currRecursionDepth = 0;
|
|
|
|
if (auto variableDeclNode = dynamic_cast<ASTNodeVariableDecl*>(node); variableDeclNode != nullptr) {
|
|
this->m_globalMembers.push_back(this->evaluateVariable(variableDeclNode));
|
|
} else if (auto arrayDeclNode = dynamic_cast<ASTNodeArrayVariableDecl*>(node); arrayDeclNode != nullptr) {
|
|
this->m_globalMembers.push_back(this->evaluateArray(arrayDeclNode));
|
|
} else if (auto pointerDeclNode = dynamic_cast<ASTNodePointerVariableDecl*>(node); pointerDeclNode != nullptr) {
|
|
this->m_globalMembers.push_back(this->evaluatePointer(pointerDeclNode));
|
|
} else if (auto typeDeclNode = dynamic_cast<ASTNodeTypeDecl*>(node); typeDeclNode != nullptr) {
|
|
// Handled above
|
|
} else if (auto functionCallNode = dynamic_cast<ASTNodeFunctionCall*>(node); functionCallNode != nullptr) {
|
|
auto result = this->evaluateFunctionCall(functionCallNode);
|
|
delete result;
|
|
}
|
|
|
|
this->m_endianStack.clear();
|
|
}
|
|
} catch (LogConsole::EvaluateError &e) {
|
|
this->getConsole().log(LogConsole::Level::Error, e);
|
|
|
|
return { };
|
|
}
|
|
|
|
return this->m_globalMembers;
|
|
}
|
|
|
|
} |