143 lines
8.7 KiB
C++
143 lines
8.7 KiB
C++
#include "lang/evaluator.hpp"
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#include "helpers/content_registry.hpp"
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namespace hex::lang {
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#define LITERAL_COMPARE(literal, cond) std::visit([&, this](auto &&literal) { return (cond) != 0; }, literal)
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void Evaluator::registerBuiltinFunctions() {
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/* findSequence */
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ContentRegistry::PatternLanguageFunctions::add("findSequence", ContentRegistry::PatternLanguageFunctions::MoreParametersThan | 1, [this](auto params) {
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auto& occurrenceIndex = asType<ASTNodeIntegerLiteral>(params[0])->getValue();
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std::vector<u8> sequence;
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for (u32 i = 1; i < params.size(); i++) {
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sequence.push_back(std::visit([](auto &&value) -> u8 {
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if (value <= 0xFF)
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return value;
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else
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throwEvaluateError("sequence bytes need to fit into 1 byte");
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}, asType<ASTNodeIntegerLiteral>(params[i])->getValue()));
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}
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std::vector<u8> bytes(sequence.size(), 0x00);
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u32 occurrences = 0;
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for (u64 offset = 0; offset < this->m_provider->getSize() - sequence.size(); offset++) {
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this->m_provider->read(offset, bytes.data(), bytes.size());
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if (bytes == sequence) {
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if (LITERAL_COMPARE(occurrenceIndex, occurrences < occurrenceIndex)) {
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occurrences++;
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continue;
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}
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return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned64Bit, offset });
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}
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}
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throwEvaluateError("failed to find sequence");
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});
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/* assert */
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ContentRegistry::PatternLanguageFunctions::add("readUnsigned", 2, [this](auto params) {
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auto address = asType<ASTNodeIntegerLiteral>(params[0])->getValue();
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auto size = asType<ASTNodeIntegerLiteral>(params[1])->getValue();
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if (LITERAL_COMPARE(address, address >= this->m_provider->getActualSize()))
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throwEvaluateError("address out of range");
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return std::visit([this](auto &&address, auto &&size) {
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if (size <= 0 || size > 16)
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throwEvaluateError("invalid read size");
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u8 value[(u8)size];
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this->m_provider->read(address, value, size);
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switch ((u8)size) {
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case 1: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned8Bit, hex::changeEndianess(*reinterpret_cast<u8*>(value), 1, this->getCurrentEndian()) });
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case 2: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned16Bit, hex::changeEndianess(*reinterpret_cast<u16*>(value), 2, this->getCurrentEndian()) });
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case 4: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned32Bit, hex::changeEndianess(*reinterpret_cast<u32*>(value), 4, this->getCurrentEndian()) });
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case 8: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned64Bit, hex::changeEndianess(*reinterpret_cast<u64*>(value), 8, this->getCurrentEndian()) });
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case 16: return new ASTNodeIntegerLiteral({ Token::ValueType::Unsigned128Bit, hex::changeEndianess(*reinterpret_cast<u128*>(value), 16, this->getCurrentEndian()) });
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default: throwEvaluateError("invalid read size");
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}
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}, address, size);
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});
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ContentRegistry::PatternLanguageFunctions::add("readSigned", 2, [this](auto params) {
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auto address = asType<ASTNodeIntegerLiteral>(params[0])->getValue();
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auto size = asType<ASTNodeIntegerLiteral>(params[1])->getValue();
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if (LITERAL_COMPARE(address, address >= this->m_provider->getActualSize()))
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throwEvaluateError("address out of range");
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return std::visit([this](auto &&address, auto &&size) {
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if (size <= 0 || size > 16)
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throwEvaluateError("invalid read size");
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u8 value[(u8)size];
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this->m_provider->read(address, value, size);
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switch ((u8)size) {
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case 1: return new ASTNodeIntegerLiteral({ Token::ValueType::Signed8Bit, hex::changeEndianess(*reinterpret_cast<s8*>(value), 1, this->getCurrentEndian()) });
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case 2: return new ASTNodeIntegerLiteral({ Token::ValueType::Signed16Bit, hex::changeEndianess(*reinterpret_cast<s16*>(value), 2, this->getCurrentEndian()) });
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case 4: return new ASTNodeIntegerLiteral({ Token::ValueType::Signed32Bit, hex::changeEndianess(*reinterpret_cast<s32*>(value), 4, this->getCurrentEndian()) });
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case 8: return new ASTNodeIntegerLiteral({ Token::ValueType::Signed64Bit, hex::changeEndianess(*reinterpret_cast<s64*>(value), 8, this->getCurrentEndian()) });
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case 16: return new ASTNodeIntegerLiteral({ Token::ValueType::Signed128Bit, hex::changeEndianess(*reinterpret_cast<s128*>(value), 16, this->getCurrentEndian()) });
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default: throwEvaluateError("invalid read size");
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}
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}, address, size);
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});
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ContentRegistry::PatternLanguageFunctions::add("assert", 2, [this](auto params) {
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auto condition = asType<ASTNodeIntegerLiteral>(params[0])->getValue();
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auto message = asType<ASTNodeStringLiteral>(params[1])->getString();
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if (LITERAL_COMPARE(condition, condition == 0))
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throwEvaluateError(hex::format("assert failed \"%s\"", message.data()));
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return nullptr;
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});
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ContentRegistry::PatternLanguageFunctions::add("warnAssert", 2, [this](auto params) {
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auto condition = asType<ASTNodeIntegerLiteral>(params[0])->getValue();
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auto message = asType<ASTNodeStringLiteral>(params[1])->getString();
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if (LITERAL_COMPARE(condition, condition == 0))
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this->emmitWaring(hex::format("assert failed \"%s\"", message.data()));
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return nullptr;
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});
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ContentRegistry::PatternLanguageFunctions::add("print", ContentRegistry::PatternLanguageFunctions::MoreParametersThan | 0, [this](auto params) {
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std::string message;
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for (auto& param : params) {
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if (auto integerLiteral = dynamic_cast<ASTNodeIntegerLiteral*>(param); integerLiteral != nullptr) {
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switch (integerLiteral->getType()) {
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case Token::ValueType::Character: message += std::get<s8>(integerLiteral->getValue()); break;
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case Token::ValueType::Unsigned8Bit: message += std::to_string(std::get<u8>(integerLiteral->getValue())); break;
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case Token::ValueType::Signed8Bit: message += std::to_string(std::get<s8>(integerLiteral->getValue())); break;
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case Token::ValueType::Unsigned16Bit: message += std::to_string(std::get<u16>(integerLiteral->getValue())); break;
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case Token::ValueType::Signed16Bit: message += std::to_string(std::get<s16>(integerLiteral->getValue())); break;
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case Token::ValueType::Unsigned32Bit: message += std::to_string(std::get<u32>(integerLiteral->getValue())); break;
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case Token::ValueType::Signed32Bit: message += std::to_string(std::get<s32>(integerLiteral->getValue())); break;
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case Token::ValueType::Unsigned64Bit: message += std::to_string(std::get<u64>(integerLiteral->getValue())); break;
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case Token::ValueType::Signed64Bit: message += std::to_string(std::get<s64>(integerLiteral->getValue())); break;
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case Token::ValueType::Unsigned128Bit: message += "A lot"; break; // TODO: Implement u128 to_string
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case Token::ValueType::Signed128Bit: message += "A lot"; break; // TODO: Implement s128 to_string
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case Token::ValueType::Float: message += std::to_string(std::get<float>(integerLiteral->getValue())); break;
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case Token::ValueType::Double: message += std::to_string(std::get<double>(integerLiteral->getValue())); break;
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case Token::ValueType::Boolean: message += std::get<s32>(integerLiteral->getValue()) ? "true" : "false"; break;
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case Token::ValueType::CustomType: message += "< Custom Type >"; break;
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}
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}
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else if (auto stringLiteral = dynamic_cast<ASTNodeStringLiteral*>(param); stringLiteral != nullptr)
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message += stringLiteral->getString();
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}
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this->emmitInfo(message);
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return nullptr;
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});
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}
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} |