fixtures/_experiment/web/main.dart

// Copyright (c) 2023, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

// @dart = 3.9

import 'dart:async';
import 'dart:core';
import 'dart:js_interop';

@JS('document.body.append')
external void append(String text);

void main() {
  // for evaluation
  Timer.periodic(const Duration(seconds: 1), (_) {
    printSimpleLocalRecord();
    printComplexLocalRecord();
    printNestedLocalRecord();
    printSimpleNamedLocalRecord();
    printComplexNamedLocalRecord();
    printNestedNamedLocalRecord();
    print('Patterns'); // Breakpoint: callTestPattern1
    testPattern(['a', 1]);
    testPattern([3.14, 'b']);
    testPattern([0, 1]);
    testPattern2();
    print('Classes');
    testClass();
  });

  append('Program is running!');
}

void printSimpleLocalRecord() {
  final record = (true, 3);
  print(record); // Breakpoint: printSimpleLocalRecord
}

void printSimpleNamedLocalRecord() {
  final record = (true, cat: 'Vasya');
  print(record); // Breakpoint: printSimpleNamedLocalRecord
}

void printComplexLocalRecord() {
  final record = (true, 3, {'a': 1, 'b': 5});
  print(record); // Breakpoint: printComplexLocalRecord
}

void printComplexNamedLocalRecord() {
  final record = (true, 3, array: {'a': 1, 'b': 5});
  print(record); // Breakpoint: printComplexNamedLocalRecord
}

void printNestedLocalRecord() {
  final record = (true, (false, 5));
  print(record); // Breakpoint: printNestedLocalRecord
}

void printNestedNamedLocalRecord() {
  final record = (true, inner: (false, 5));
  print(record); // Breakpoint: printNestedNamedLocalRecord
}

void testClass() {
  final greeter = GreeterClass(greeteeName: 'Charlie Brown');
  greeter.sayHello();
}

String testPattern(Object obj) {
  switch (obj) {
    case [final a, final int n] || [final int n, final a]
        when n == 1 && a is String:
      return a.toString(); // Breakpoint: testPatternCase1
    case [final double n, final a] || [final a, final double n]
        when (n - 3.14).abs() < 0.001:
      return a.toString(); // Breakpoint: testPatternCase2
    default:
      return 'default'; // Breakpoint: testPatternDefault
  }
}

String testPattern2() {
  final dog = 'Prismo';
  final cats = ['Garfield', 'Tom']; // Breakpoint: testPattern2Case1
  final [firstCat, secondCat] = cats;
  print(firstCat); // Breakpoint: testPattern2Case2
  return '$dog, $firstCat, $secondCat';
}

class GreeterClass {
  final String greeteeName;
  final bool useFrench;

  GreeterClass({this.greeteeName = 'Snoopy', this.useFrench = false});

  void sayHello() {
    useFrench ? greetInFrench() : greetInEnglish();
  }

  void greetInEnglish() {
    print('Hello $greeteeName'); // Breakpoint: testClass1Case1
  }

  void greetInFrench() {
    print('Bonjour $greeteeName');
  }
}