declare global {
    interface ImportMeta {
        main: boolean;
    }
}

import { Lexer, Parser, NGNKGenerator } from "./mod.ts";

export function add(a: number, b: number): number {
  return a + b;
}

function testParser(input: string): void {
    console.log("\n=== Testing Parser ===");
    console.log("Input:", input);
    
    try {
        const lexer = new Lexer(input);
        const tokens = lexer.tokenize();
        console.log("Tokens:", tokens);

        const parser = new Parser(tokens);
        const ast = parser.parseExpressions();
        console.log("AST:", JSON.stringify(ast, null, 2));

        const generator = new NGNKGenerator();
        const output = ast.map(node => generator.generate(node)).join("; ");
        console.log("Generated Output:", output);
    } catch (error) {
        console.error("Error:", error.message);
    }
}

// Test cases
if (import.meta.main) {
    // Test 1: Basic arithmetic
    testParser("1 + 2");

    // Test 2: Function call
    testParser("sum[1; 2; 3]");

    // Test 3: Complex expression
    testParser("map[x; + 2] array[1; 2; 3]");

    // Test 4: Unary operators
    testParser("# array[1; 2; 3]");

    // Test 5: Multiple expressions
    testParser("x + 1 # array[1; 2] sum[4; 5; 6]");

    // Test 6: Non-commutative operators
    testParser("10 - 5");

    // Test 7: Nested function calls
    testParser("outer[inner[1; 2]; 3]");

    // Test 8: Error case - incomplete expression
    testParser("sum[1; 2;");
}