ar-programming-language/main.cpp at main · Abdur-Rafay-AR/ar-programming-language · GitHub

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#include "token.h"
#include "lexer.h"
#include "parser.h"
#include "interpreter.h"
#include <iostream>
#include <fstream>
#include <sstream>
#include <string>

using namespace AR437;

void runFile(const std::string& filename) {
    std::ifstream file(filename);
    if (!file.is_open()) {
        std::cerr << "Error: Could not open file '" << filename << "'" << std::endl;
        return;
    }

    std::ostringstream buffer;
    buffer << file.rdbuf();
    std::string source = buffer.str();
    file.close();

    try {
        // Lexical analysis
        Lexer lexer(source);
        std::vector<Token> tokens = lexer.tokenize();

        // Syntax analysis
        Parser parser(tokens);
        auto program = parser.parse();

        // Interpretation
        Interpreter interpreter;
        interpreter.interpret(*program);

    } catch (const ParseError& error) {
        std::cerr << "Parse Error: " << error.what() << std::endl;
    } catch (const RuntimeError& error) {
        std::cerr << "Runtime Error: " << error.what() << std::endl;
    } catch (const std::exception& error) {
        std::cerr << "Error: " << error.what() << std::endl;
    }
}

void runInteractive() {
    std::cout << "AR Programming Language Interpreter v1.0" << std::endl;
    std::cout << "Enter commands (type 'exit' to quit):" << std::endl;

    Interpreter interpreter;
    std::string line;

    while (true) {
        std::cout << "AR> ";
        if (!std::getline(std::cin, line)) {
            break;
        }

        if (line == "exit" || line == "quit") {
            break;
        }

        if (line.empty()) {
            continue;
        }

        try {
            // Lexical analysis
            Lexer lexer(line);
            std::vector<Token> tokens = lexer.tokenize();

            // Syntax analysis
            Parser parser(tokens);
            auto program = parser.parse();

            // Interpretation
            interpreter.interpret(*program);

        } catch (const ParseError& error) {
            std::cerr << "Parse Error: " << error.what() << std::endl;
        } catch (const RuntimeError& error) {
            std::cerr << "Runtime Error: " << error.what() << std::endl;
        } catch (const std::exception& error) {
            std::cerr << "Error: " << error.what() << std::endl;
        }
    }

    std::cout << "Goodbye!" << std::endl;
}

void showHelp() {
    std::cout << "AR Programming Language" << std::endl;
    std::cout << "Usage:" << std::endl;
    std::cout << "  ar [script.ar]  - Run a script file" << std::endl;
    std::cout << "  ar                 - Start interactive mode" << std::endl;
    std::cout << "  ar --help          - Show this help message" << std::endl;
    std::cout << std::endl;
    std::cout << "Language Features:" << std::endl;
    std::cout << "  - Variables: let x = 10;" << std::endl;
    std::cout << "  - Functions: func add(a, b) { return a + b; }" << std::endl;
    std::cout << "  - Control flow: if, while, for" << std::endl;
    std::cout << "  - Data types: numbers, strings, booleans, null" << std::endl;
    std::cout << "  - Operators: +, -, *, /, %, ==, !=, <, >, <=, >=, &&, ||, !" << std::endl;
    std::cout << "  - Built-ins: print" << std::endl;
}

int main(int argc, char* argv[]) {
    if (argc == 1) {
        // Interactive mode
        runInteractive();
    } else if (argc == 2) {
        std::string arg = argv[1];
        if (arg == "--help" || arg == "-h") {
            showHelp();
        } else {
            // Run file
            runFile(arg);
        }
    } else {
        std::cerr << "Usage: " << argv[0] << " [script.ar]" << std::endl;
        return 1;
    }

    return 0;
}