| // Copyright (c) 2014, 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. |
| // Test constant folding on numbers. |
| |
| import 'dart:async'; |
| import 'package:async_helper/async_helper.dart'; |
| import 'compiler_helper.dart'; |
| |
| const String INT_PLUS_ZERO = """ |
| int foo(x) => x; |
| void main() { |
| var x = foo(0); |
| return (x & 1) + 0; |
| } |
| """; |
| |
| const String ZERO_PLUS_INT = """ |
| int foo(x) => x; |
| void main() { |
| var x = foo(0); |
| return 0 + (x & 1); |
| } |
| """; |
| |
| // TODO(johnniwinther): Find out why this doesn't work without the `as num` |
| // cast. |
| const String NUM_PLUS_ZERO = """ |
| int foo(x) => x; |
| void main() { |
| var x = foo(0) as num; |
| return x + 0; |
| } |
| """; |
| |
| const String ZERO_PLUS_NUM = """ |
| int foo(x) => x; |
| void main() { |
| var x = foo(0); |
| return 0 + x; |
| } |
| """; |
| |
| const String INT_TIMES_ONE = """ |
| int foo(x) => x; |
| void main() { |
| var x = foo(0); |
| return (x & 1) * 1; |
| } |
| """; |
| |
| const String ONE_TIMES_INT = """ |
| int foo(x) => x; |
| void main() { |
| var x = foo(0); |
| return 1 * (x & 1); |
| } |
| """; |
| |
| const String NUM_TIMES_ONE = """ |
| int foo(x) => x; |
| void main() { |
| var x = foo(0); |
| return x * 1; |
| } |
| """; |
| |
| const String ONE_TIMES_NUM = """ |
| int foo(x) => x; |
| void main() { |
| var x = foo(0); |
| return 1 * x; |
| } |
| """; |
| |
| main() { |
| var plusZero = new RegExp(r"\+ 0"); |
| var zeroPlus = new RegExp(r"0 \+"); |
| var timesOne = new RegExp(r"\* 1"); |
| var oneTimes = new RegExp(r"1 \*"); |
| |
| asyncTest(() => Future.wait([ |
| compileAndDoNotMatch(INT_PLUS_ZERO, 'main', plusZero), |
| compileAndDoNotMatch(ZERO_PLUS_INT, 'main', zeroPlus), |
| compileAndMatch(NUM_PLUS_ZERO, 'main', plusZero), |
| compileAndMatch(ZERO_PLUS_NUM, 'main', zeroPlus), |
| compileAndDoNotMatch(INT_TIMES_ONE, 'main', timesOne), |
| compileAndDoNotMatch(ONE_TIMES_INT, 'main', oneTimes), |
| compileAndDoNotMatch(NUM_TIMES_ONE, 'main', timesOne), |
| compileAndDoNotMatch(ONE_TIMES_NUM, 'main', oneTimes), |
| ])); |
| } |