execute method

@override Future<String> execute(CalculatorArgs args)

Executes the tool with the given arguments.

Returns the result as a string. Implementations should handle validation of args and throw exceptions for invalid inputs.

args should be of type T, which represents the structured arguments for this tool.

Implementation

@override
Future<String> execute(CalculatorArgs args) async {
  final op = args.operation;
  final a = args.a;
  final b = args.b;
  num result;
  switch (op) {
    case 'add':
      result = a + b;
      break;
    case 'subtract':
      result = a - b;
      break;
    case 'multiply':
      result = a * b;
      break;
    case 'divide':
      if (b == 0) return 'Error: Division by zero';
      result = a / b;
      break;
    default:
      return 'Unknown operation';
  }
  return 'Result: $result';
}