代码实现高性能异构特定领域代码符号解析系统

Python 代码实现高性能异构特定领域代码符号解析系统

输入解析模块

class Lexer:
    def __init__(self, source_code):
        self.source_code = source_code
        self.tokens = []
        self.current_pos = 0

    def tokenize(self):
        # 简单的词法分析实现
        while self.current_pos < len(self.source_code):
            current_char = self.source_code[self.current_pos]
            if current_char.isalpha():
                self.tokens.append(self._read_identifier())
            elif current_char.isdigit():
                self.tokens.append(self._read_number())
            elif current_char in ['+', '-', '*', '/', '(', ')']:
                self.tokens.append((current_char, current_char))
                self.current_pos += 1
            else:
                self.current_pos += 1  # 跳过空白字符
        return self.tokens

    def _read_identifier(self):
        start_pos = self.current_pos
        while self.current_pos < len(self.source_code) and self.source_code[self.current_pos].isalpha():
            self.current_pos += 1
        return ('IDENTIFIER', self.source_code[start_pos:self.current_pos])

    def _read_number(self):
        start_pos = self.current_pos
        while self.current_pos < len(self.source_code) and self.source_code[self.current_pos].isdigit():
            self.current_pos += 1
        return ('NUMBER', self.source_code[start_pos:self.current_pos])

符号表管理模块

class SymbolTable:
    def __init__(self):
        self.symbols = {}

    def insert(self, symbol, symbol_info):
        self.symbols[symbol] = symbol_info

    def lookup(self, symbol):
        return self.symbols.get(symbol, None)

    def delete(self, symbol):
        if symbol in self.symbols:
            del self.symbols[symbol]

语法分析模块

class Parser:
    def __init__(self, tokens):
        self.tokens = tokens
        self.current_token_index = 0

    def parse(self):
        # 实现简单的递归下降解析器
        return self._parse_expression()

    def _parse_expression(self):
        left = self._parse_term()
        while self._current_token() in ['+', '-']:
            operator = self._current_token()
            self._advance()
            right = self._parse_term()
            left = ('BinaryOp', operator, left, right)
        return left

    def _parse_term(self):
        left = self._parse_factor()
        while self._current_token() in ['*', '/']:
            operator = self._current_token()
            self._advance()
            right = self._parse_factor()
            left = ('BinaryOp', operator, left, right)
        return left

    def _parse_factor(self):
        token = self._current_token()
        if token[0] == 'NUMBER':
            self._advance()
            return ('Number', token[1])
        elif token[0] == 'IDENTIFIER':
            self._advance()
            return ('Identifier', token[1])
        elif token == '(':
            self._advance()
            expr = self._parse_expression()
            self._expect(')')
            return expr
        else:
            raise SyntaxError("Unexpected token: " + str(token))

    def _current_token(self):
        return self.tokens[self.current_token_index]

    def _advance(self):
        self.current_token_index += 1

    def _expect(self, expected_token):
        if self._current_token() != expected_token:
            raise SyntaxError(f"Expected token {expected_token} but got {self._current_token()}")
        self._advance()

语义分析模块

class SemanticAnalyzer:
    def __init__(self, symbol_table):
        self.symbol_table = symbol_table

    def analyze(self, ast):
        self._analyze_node(ast)

    def _analyze_node(self, node):
        node_type = node[0]
        if node_type == 'BinaryOp':
            self._analyze_node(node[2])  # 左操作数
            self._analyze_node(node[3])  # 右操作数
        elif node_type == 'Number':
            pass  # 数字不需要语义检查
        elif node_type == 'Identifier':
            if not self.symbol_table.lookup(node[1]):
                raise NameError(f"Undefined symbol: {node[1]}")
        else:
            raise TypeError(f"Unknown node type: {node_type}")

优化模块

class Optimizer:
    def optimize(self, ast):
        return self._optimize_node(ast)

    def _optimize_node(self, node):
        if node[0] == 'BinaryOp':
            left = self._optimize_node(node[2])
            right = self._optimize_node(node[3])
            if left[0] == 'Number' and right[0] == 'Number':
                return ('Number', str(eval（left[1] + node[1] + right[1])))
            return ('BinaryOp', node[1], left, right)
        return node

代码生成模块

class CodeGenerator:
    def generate(self, ast):
        return self._generate_node(ast)

    def _generate_node(self, node):
        if node[0] == 'BinaryOp':
            left_code = self._generate_node(node[2])
            right_code = self._generate_node(node[3])
            return f"({left_code} {node[1]} {right_code})"
        elif node[0] == 'Number':
            return node[1]
        elif node[0] == 'Identifier':
            return node[1]
        else:
            raise TypeError(f"Unknown node type: {node[0]}")

错误处理模块

class ErrorHandler:
    @staticmethod
    def handle(error):
        print(f"Error: {error}")

测试模块

if __name__ == "__main__":
    source_code = "a + b * (c + d)"
    lexer = Lexer(source_code)
    tokens = lexer.tokenize()
    print("Tokens:", tokens)

    parser = Parser(tokens)
    ast = parser.parse()
    print("AST:", ast)

    symbol_table = SymbolTable()
    symbol_table.insert('a', 'int')
    symbol_table.insert('b', 'int')
    symbol_table.insert('c', 'int')
    symbol_table.insert('d', 'int')

    semantic_analyzer = SemanticAnalyzer(symbol_table)
    try:
        semantic_analyzer.analyze(ast)
        optimizer = Optimizer()
        optimized_ast = optimizer.optimize(ast)
        print("Optimized AST:", optimized_ast)

        code_generator = CodeGenerator()
        target_code = code_generator.generate(optimized_ast)
        print("Target Code:", target_code)
    except Exception as e:
        ErrorHandler.handle(e)

C++ 代码实现高性能异构特定领域代码符号解析系统

输入解析模块

#include <iostream>
#include <string>
#include <vector>
#include <cctype>

class Lexer {
public:
    Lexer(const std::string& sourceCode) : sourceCode(sourceCode), currentPos(0) {}

    std::vector<std::pair<std::string, std::string>> tokenize() {
        std::vector<std::pair<std::string, std::string>> tokens;
        while (currentPos < sourceCode.length()) {
            char currentChar = sourceCode[currentPos];
            if (std::isalpha(currentChar)) {
                tokens.push_back(readIdentifier());
            } else if (std::isdigit(currentChar)) {
                tokens.push_back(readNumber());
            } else if (std::string("+-*/()").find(currentChar) != std::string::npos) {
                tokens.emplace_back(std::string(1, currentChar), std::string(1, currentChar));
                currentPos++;
            } else {
                currentPos++;  // 跳过空白字符
            }
        }
        return tokens;
    }

private:
    std::pair<std::string, std::string> readIdentifier() {
        size_t startPos = currentPos;
        while (currentPos < sourceCode.length() && std::isalpha(sourceCode[currentPos])) {
            currentPos++;
        }
        return {"IDENTIFIER", sourceCode.substr(startPos, currentPos - startPos)};
    }

    std::pair<std::string, std::string> readNumber() {
        size_t startPos = currentPos;
        while (currentPos < sourceCode.length() && std::isdigit(sourceCode[currentPos])) {
            currentPos++;
        }
        return {"NUMBER", sourceCode.substr(startPos, currentPos - startPos)};
    }

    std::string sourceCode;
    size_t currentPos;
};

符号表管理模块

#include <unordered_map>
#include <string>

class SymbolTable {
public:
    void insert(const std::string& symbol, const std::string& symbolInfo) {
        symbols[symbol] = symbolInfo;
    }

    std::string lookup(const std::string& symbol) {
        return symbols.find(symbol) != symbols.end() ? symbols[symbol] : "";
    }

    void erase(const std::string& symbol) {
        symbols.erase(symbol);
    }

private:
    std::unordered_map<std::string, std::string> symbols;
};

语法分析模块

#include <vector>
#include <string>
#include <stdexcept>
#include <memory>

class ASTNode {
public:
    virtual ~ASTNode() = default;
};

class BinaryOpNode : public ASTNode {
public:
    BinaryOpNode(const std::string& op, std::shared_ptr<ASTNode> left, std::shared_ptr<ASTNode> right)
        : op(op), left(left), right(right) {}

    std::string op;
    std::shared_ptr<ASTNode> left, right;
};

class NumberNode : public ASTNode {
public:
    NumberNode(const std::string& value) : value(value) {}

    std::string value;
};

class IdentifierNode : public ASTNode {
public:
    IdentifierNode(const std::string& name) : name(name) {}

    std::string name;
};

class Parser {
public:
    Parser(const std::vector<std::pair<std::string, std::string>>& tokens) : tokens(tokens), currentTokenIndex(0) {}

    std::shared_ptr<ASTNode> parse() {
        return parseExpression();
    }

private:
    std::shared_ptr<ASTNode> parseExpression() {
        auto left = parseTerm();
        while (currentToken().first == "+" || currentToken().first == "-") {
            std::string op = currentToken().first;
            advance();
            auto right = parseTerm();
            left = std::make_shared<BinaryOpNode>(op, left, right);
        }
        return left;
    }

    std::shared_ptr<ASTNode> parseTerm() {
        auto left = parseFactor();
        while (currentToken().first == "*" || currentToken().first == "/") {
            std::string op = currentToken().first;
            advance();
            auto right = parseFactor();
            left = std::make_shared<BinaryOpNode>(op, left, right);
        }
        return left;
    }

    std::shared_ptr<ASTNode> parseFactor() {
        if (currentToken().first == "NUMBER") {
            auto number = std::make_shared<NumberNode>(currentToken().second);
            advance();
            return number;
        } else if (currentToken().first == "IDENTIFIER") {
            auto identifier = std::make_shared<IdentifierNode>(currentToken().second);
            advance();
            return identifier;
        } else if (currentToken().first == "(") {
            advance();
            auto expr = parseExpression();
            expect(")");
            return expr;
        } else {
            throw std::runtime_error("Unexpected token: " + currentToken().first);
        }
    }

    std::pair<std::string, std::string> currentToken() {
        return tokens[currentTokenIndex];
    }

    void advance() {
        if (currentTokenIndex < tokens.size()) {
            currentTokenIndex++;
        }
    }

    void expect(const std::string& expectedToken) {
        if (currentToken().first != expectedToken) {
            throw std::runtime_error("Expected token " + expectedToken + " but got " + currentToken().first);
        }
        advance();
    }

    std::vector<std::pair<std::string, std::string>> tokens;
    size_t currentTokenIndex;
};

语义分析模块

class SemanticAnalyzer {
public:
    SemanticAnalyzer(SymbolTable& symbolTable) : symbolTable(symbolTable) {}

    void analyze(const std::shared_ptr<ASTNode>& ast) {
        analyzeNode(ast);
    }

private:
    void analyzeNode(const std::shared_ptr<ASTNode>& node) {
        if (auto binaryOpNode = std::dynamic_pointer_cast<BinaryOpNode>(node)) {
            analyzeNode(binaryOpNode->left);
            analyzeNode(binaryOpNode->right);
        } else if (auto numberNode = std::dynamic_pointer_cast<NumberNode>(node)) {
            // 数字不需要语义检查
        } else if (auto identifierNode = std::dynamic_pointer_cast<IdentifierNode>(node)) {
            if (symbolTable.lookup(identifierNode->name).empty()) {
                throw std::runtime_error("Undefined symbol: " + identifierNode->name);
            }
        } else {
            throw std::runtime_error("Unknown node type");
        }
    }

    SymbolTable& symbolTable;
};

优化模块

class Optimizer {
public:
    std::shared_ptr<ASTNode> optimize(const std::shared_ptr<ASTNode>& ast) {
        return optimizeNode(ast);
    }

private:
    std::shared_ptr<ASTNode> optimizeNode(const std::shared_ptr<ASTNode>& node) {
        if (auto binaryOpNode = std::dynamic_pointer_cast<BinaryOpNode>(node)) {
            auto left = optimizeNode(binaryOpNode->left);
            auto right = optimizeNode(binaryOpNode->right);
            if (auto leftNumber = std::dynamic_pointer_cast<NumberNode>(left)) {
                if (auto rightNumber = std::dynamic_pointer_cast<NumberNode>(right)) {
                    return std::make_shared<NumberNode>(
                        std::to_string(evaluateExpression(leftNumber->value, binaryOpNode->op, rightNumber->value))
                    );
                }
            }
            return std::make_shared<BinaryOpNode>(binaryOpNode->op, left, right);
        }
        return node;
    }

    double evaluateExpression(const std::string& left, const std::string& op, const std::string& right) {
        double leftVal = std::stod(left);
        double rightVal = std::stod(right);
        if (op == "+") return leftVal + rightVal;
        if (op == "-") return leftVal - rightVal;
        if (op == "*") return leftVal * rightVal;
        if (op == "/") return leftVal / rightVal;
        throw std::runtime_error("Unsupported operator: " + op);
    }
};

代码生成模块

class CodeGenerator {
public:
    std::string generate(const std::shared_ptr<ASTNode>& ast) {
        return generateNode(ast);
    }

private:
    std::string generateNode(const std::shared_ptr<ASTNode>& node) {
        if (auto binaryOpNode = std::dynamic_pointer_cast<BinaryOpNode>(node)) {
            std::string leftCode = generateNode(binaryOpNode->left);
            std::string rightCode = generateNode(binaryOpNode->right);
            return "(" + leftCode + " " + binaryOpNode->op + " " + rightCode + ")";
        } else if (auto numberNode = std::dynamic_pointer_cast<NumberNode>(node)) {
            return numberNode->value;
        } else if (auto identifierNode = std::dynamic_pointer_cast<IdentifierNode>(node)) {
            return identifierNode->name;
        } else {
            throw std::runtime_error("Unknown node type");
        }
    }
};

错误处理模块

class ErrorHandler {
public:
    static void handle(const std::exception& e) {
        std::cerr << "Error: " << e.what() << std::endl;
    }
};

测试模块

int main() {
    std::string sourceCode = "a + b * (c + d)";
    Lexer lexer(sourceCode);
    auto tokens = lexer.tokenize();
    std::cout << "Tokens:" << std::endl;
    for (const auto& token : tokens) {
        std::cout << "(" << token.first << ", " << token.second << ")" << std::endl;
    }

    Parser parser(tokens);
    auto ast = parser.parse();
    std::cout << "AST parsed successfully." << std::endl;

    SymbolTable symbolTable;
    symbolTable.insert("a", "int");
    symbolTable.insert("b", "int");
    symbolTable.insert("c", "int");
    symbolTable.insert("d", "int");

    SemanticAnalyzer semanticAnalyzer(symbolTable);
    try {
        semanticAnalyzer.analyze(ast);
        std::cout << "Semantic analysis successful." << std::endl;

        Optimizer optimizer;
        auto optimizedAst = optimizer.optimize(ast);
        std::cout << "AST optimized successfully." << std::endl;

        CodeGenerator codeGenerator;
        std::string targetCode = codeGenerator.generate(optimizedAst);
        std::cout << "Target Code: " << targetCode << std::endl;
    } catch (const std::exception& e) {
        ErrorHandler::handle(e);
    }

    return 0;
}

此C++代码实现了一个简单的高性能异构特定领域代码符号解析系统，按照模块化设计进行实现。每个模块都是独立的，便于测试和维护，确保每个部分都能正确地解析和处理特定领域的代码符号。