Johnni Winther
b74bb147ce
Change-Id: Ia3607574f0f01db833ecf5d72d6bc5087757c180 Reviewed-on: https://dart-review.googlesource.com/53800 Reviewed-by: Sigmund Cherem <sigmund@google.com>
413 lines
16 KiB
Dart
413 lines
16 KiB
Dart
// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library constant_expression_test;
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import 'dart:async';
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import 'package:async_helper/async_helper.dart';
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import 'package:expect/expect.dart';
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import 'package:compiler/src/commandline_options.dart';
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import 'package:compiler/src/compiler.dart';
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import 'package:compiler/src/constants/expressions.dart';
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import 'package:compiler/src/kernel/element_map_impl.dart';
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import 'package:compiler/src/elements/entities.dart';
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import '../memory_compiler.dart';
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import 'constant_expression_evaluate_test.dart' show MemoryEnvironment;
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class TestData {
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/// Declarations needed for the [constants].
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final String declarations;
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/// Tested constants.
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final List<ConstantData> constants;
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final bool strongModeOnly;
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const TestData(this.declarations, this.constants,
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{this.strongModeOnly: false});
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}
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class ConstantData {
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/// Source code for the constant expression.
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final String code;
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/// The expected constant expression kind.
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final ConstantExpressionKind kind;
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/// ConstantExpression.getText() result if different from [code].
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final String text;
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/// ConstantExpression.getText() result if different from [code].
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final String strongText;
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/// The expected instance type for ConstructedConstantExpression.
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final String type;
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/// The expected instance fields for ConstructedConstantExpression.
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final Map<String, String> fields;
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const ConstantData(String code, this.kind,
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{String text, String strongText, this.type, this.fields})
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: this.code = code,
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this.text = text ?? code,
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this.strongText = strongText ?? text ?? code;
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}
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const List<TestData> DATA = const [
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const TestData('''
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class Class<T, S> {
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final a;
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final b;
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final c;
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const Class(this.a, {this.b, this.c: true});
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const Class.named([this.a, this.b = 0, this.c = 2]);
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static const staticConstant = 0;
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static staticFunction() {}
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}
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const t = true;
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const f = false;
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const toplevelConstant = 0;
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toplevelFunction() {}
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''', const [
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const ConstantData('null', ConstantExpressionKind.NULL),
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const ConstantData('false', ConstantExpressionKind.BOOL),
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const ConstantData('true', ConstantExpressionKind.BOOL),
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const ConstantData('0', ConstantExpressionKind.INT),
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const ConstantData('0.0', ConstantExpressionKind.DOUBLE),
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const ConstantData('"foo"', ConstantExpressionKind.STRING),
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const ConstantData('1 + 2', ConstantExpressionKind.BINARY),
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const ConstantData('1 == 2', ConstantExpressionKind.BINARY),
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const ConstantData('1 != 2', ConstantExpressionKind.UNARY,
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// a != b is encoded as !(a == b) by CFE.
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text: '!(1 == 2)'),
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const ConstantData('1 ?? 2', ConstantExpressionKind.BINARY),
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const ConstantData('-(1)', ConstantExpressionKind.UNARY, text: '-1'),
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const ConstantData('"foo".length', ConstantExpressionKind.STRING_LENGTH),
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const ConstantData('identical(0, 1)', ConstantExpressionKind.IDENTICAL),
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const ConstantData('"a" "b"', ConstantExpressionKind.CONCATENATE,
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text: '"ab"'),
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const ConstantData('identical', ConstantExpressionKind.FUNCTION),
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const ConstantData('true ? 0 : 1', ConstantExpressionKind.CONDITIONAL),
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const ConstantData('proxy', ConstantExpressionKind.FIELD),
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const ConstantData('Object', ConstantExpressionKind.TYPE),
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const ConstantData('#name', ConstantExpressionKind.SYMBOL),
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const ConstantData('const []', ConstantExpressionKind.LIST),
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const ConstantData('const [0, 1]', ConstantExpressionKind.LIST,
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strongText: 'const <int>[0, 1]'),
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const ConstantData('const <int>[0, 1]', ConstantExpressionKind.LIST),
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const ConstantData('const <dynamic>[0, 1]', ConstantExpressionKind.LIST,
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text: 'const [0, 1]'),
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const ConstantData('const {}', ConstantExpressionKind.MAP),
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const ConstantData('const {0: 1, 2: 3}', ConstantExpressionKind.MAP,
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strongText: 'const <int, int>{0: 1, 2: 3}'),
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const ConstantData(
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'const <int, int>{0: 1, 2: 3}', ConstantExpressionKind.MAP),
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const ConstantData(
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'const <String, int>{"0": 1, "2": 3}', ConstantExpressionKind.MAP),
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const ConstantData(
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'const <String, dynamic>{"0": 1, "2": 3}', ConstantExpressionKind.MAP),
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const ConstantData(
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'const <dynamic, dynamic>{"0": 1, "2": 3}', ConstantExpressionKind.MAP,
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text: 'const {"0": 1, "2": 3}'),
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const ConstantData('const bool.fromEnvironment("foo", defaultValue: false)',
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ConstantExpressionKind.BOOL_FROM_ENVIRONMENT),
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const ConstantData('const int.fromEnvironment("foo", defaultValue: 42)',
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ConstantExpressionKind.INT_FROM_ENVIRONMENT),
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const ConstantData(
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'const String.fromEnvironment("foo", defaultValue: "bar")',
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ConstantExpressionKind.STRING_FROM_ENVIRONMENT),
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const ConstantData('const Class(0)', ConstantExpressionKind.CONSTRUCTED),
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const ConstantData(
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'const Class(0, b: 1)', ConstantExpressionKind.CONSTRUCTED),
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const ConstantData(
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'const Class(0, c: 2)', ConstantExpressionKind.CONSTRUCTED),
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const ConstantData(
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'const Class(0, b: 3, c: 4)', ConstantExpressionKind.CONSTRUCTED),
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const ConstantData(
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'const Class.named()', ConstantExpressionKind.CONSTRUCTED),
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const ConstantData(
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'const Class.named(0)', ConstantExpressionKind.CONSTRUCTED),
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const ConstantData(
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'const Class.named(0, 1)', ConstantExpressionKind.CONSTRUCTED),
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const ConstantData(
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'const Class.named(0, 1, 2)', ConstantExpressionKind.CONSTRUCTED),
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const ConstantData(
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'const Class<String, int>(0)', ConstantExpressionKind.CONSTRUCTED),
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const ConstantData(
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'const Class<String, dynamic>(0)', ConstantExpressionKind.CONSTRUCTED),
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const ConstantData(
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'const Class<dynamic, String>(0)', ConstantExpressionKind.CONSTRUCTED),
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const ConstantData(
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'const Class<dynamic, dynamic>(0)', ConstantExpressionKind.CONSTRUCTED,
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text: 'const Class(0)'),
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const ConstantData('toplevelConstant', ConstantExpressionKind.FIELD),
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const ConstantData('toplevelFunction', ConstantExpressionKind.FUNCTION),
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const ConstantData('Class.staticConstant', ConstantExpressionKind.FIELD),
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const ConstantData('Class.staticFunction', ConstantExpressionKind.FUNCTION),
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const ConstantData('1 + 2', ConstantExpressionKind.BINARY),
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const ConstantData('1 + 2 + 3', ConstantExpressionKind.BINARY),
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const ConstantData('1 + -2', ConstantExpressionKind.BINARY),
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const ConstantData('-1 + 2', ConstantExpressionKind.BINARY),
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const ConstantData('(1 + 2) + 3', ConstantExpressionKind.BINARY,
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text: '1 + 2 + 3'),
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const ConstantData('1 + (2 + 3)', ConstantExpressionKind.BINARY,
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text: '1 + 2 + 3'),
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const ConstantData('1 * 2', ConstantExpressionKind.BINARY),
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const ConstantData('1 * 2 + 3', ConstantExpressionKind.BINARY),
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const ConstantData('1 * (2 + 3)', ConstantExpressionKind.BINARY),
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const ConstantData('1 + 2 * 3', ConstantExpressionKind.BINARY),
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const ConstantData('(1 + 2) * 3', ConstantExpressionKind.BINARY),
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const ConstantData(
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'false || identical(0, 1)', ConstantExpressionKind.BINARY),
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const ConstantData('!identical(0, 1)', ConstantExpressionKind.UNARY),
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const ConstantData(
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'!identical(0, 1) || false', ConstantExpressionKind.BINARY),
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const ConstantData(
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'!(identical(0, 1) || false)', ConstantExpressionKind.UNARY),
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const ConstantData('identical(0, 1) ? 3 * 4 + 5 : 6 + 7 * 8',
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ConstantExpressionKind.CONDITIONAL),
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const ConstantData('t ? f ? 0 : 1 : 2', ConstantExpressionKind.CONDITIONAL),
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const ConstantData(
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'(t ? t : f) ? f ? 0 : 1 : 2', ConstantExpressionKind.CONDITIONAL),
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const ConstantData(
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't ? t : f ? f ? 0 : 1 : 2', ConstantExpressionKind.CONDITIONAL),
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const ConstantData(
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't ? t ? t : t : t ? t : t', ConstantExpressionKind.CONDITIONAL),
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const ConstantData(
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't ? (t ? t : t) : (t ? t : t)', ConstantExpressionKind.CONDITIONAL,
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text: 't ? t ? t : t : t ? t : t'),
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const ConstantData(
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'const [const <dynamic, dynamic>{0: true, "1": "c" "d"}, '
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'const Class(const Class<dynamic, dynamic>(toplevelConstant))]',
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ConstantExpressionKind.LIST,
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text: 'const [const {0: true, "1": "cd"}, '
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'const Class(const Class(toplevelConstant))]',
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strongText: 'const <Object>[const {0: true, "1": "cd"}, '
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'const Class(const Class(toplevelConstant))]'),
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]),
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const TestData('''
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class A {
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const A();
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}
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class B {
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final field1;
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const B(this.field1);
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}
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class C extends B {
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final field2;
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const C({field1: 42, this.field2: false}) : super(field1);
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const C.named([field = false]) : this(field1: field, field2: field);
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}
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''', const [
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const ConstantData('const Object()', ConstantExpressionKind.CONSTRUCTED,
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type: 'Object', fields: const {}),
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const ConstantData('const A()', ConstantExpressionKind.CONSTRUCTED,
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type: 'A', fields: const {}),
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const ConstantData('const B(0)', ConstantExpressionKind.CONSTRUCTED,
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type: 'B', fields: const {'field(B#field1)': '0'}),
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const ConstantData('const B(const A())', ConstantExpressionKind.CONSTRUCTED,
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type: 'B', fields: const {'field(B#field1)': 'const A()'}),
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const ConstantData('const C()', ConstantExpressionKind.CONSTRUCTED,
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type: 'C',
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fields: const {
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'field(B#field1)': '42',
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'field(C#field2)': 'false',
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}),
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const ConstantData(
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'const C(field1: 87)', ConstantExpressionKind.CONSTRUCTED,
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type: 'C',
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fields: const {
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'field(B#field1)': '87',
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'field(C#field2)': 'false',
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}),
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const ConstantData(
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'const C(field2: true)', ConstantExpressionKind.CONSTRUCTED,
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type: 'C',
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fields: const {
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'field(B#field1)': '42',
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'field(C#field2)': 'true',
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}),
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const ConstantData('const C.named()', ConstantExpressionKind.CONSTRUCTED,
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type: 'C',
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fields: const {
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'field(B#field1)': 'false',
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'field(C#field2)': 'false',
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}),
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const ConstantData('const C.named(87)', ConstantExpressionKind.CONSTRUCTED,
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type: 'C',
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fields: const {
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'field(B#field1)': '87',
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'field(C#field2)': '87',
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}),
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]),
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const TestData('''
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class A<T> implements B {
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final field1;
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const A({this.field1:42});
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}
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class B<S> implements C {
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const factory B({field1}) = A<B<S>>;
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const factory B.named() = A<S>;
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}
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class C<U> {
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const factory C({field1}) = A<B<double>>;
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}
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''', const [
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const ConstantData('const A()', ConstantExpressionKind.CONSTRUCTED,
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type: 'A<dynamic>', fields: const {'field(A#field1)': '42'}),
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const ConstantData(
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'const A<int>(field1: 87)', ConstantExpressionKind.CONSTRUCTED,
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type: 'A<int>', fields: const {'field(A#field1)': '87'}),
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const ConstantData('const B()', ConstantExpressionKind.CONSTRUCTED,
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type: 'A<B<dynamic>>',
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fields: const {
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'field(A#field1)': '42',
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},
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// Redirecting factories are replaced by their effective targets by CFE.
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text: 'const A<B<dynamic>>()'),
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const ConstantData('const B<int>()', ConstantExpressionKind.CONSTRUCTED,
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type: 'A<B<int>>',
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fields: const {
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'field(A#field1)': '42',
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},
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// Redirecting factories are replaced by their effective targets by CFE.
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text: 'const A<B<int>>()'),
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const ConstantData(
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'const B<int>(field1: 87)', ConstantExpressionKind.CONSTRUCTED,
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type: 'A<B<int>>',
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fields: const {
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'field(A#field1)': '87',
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},
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// Redirecting factories are replaced by their effective targets by CFE.
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text: 'const A<B<int>>(field1: 87)'),
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const ConstantData(
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'const C<int>(field1: 87)', ConstantExpressionKind.CONSTRUCTED,
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type: 'A<B<double>>',
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fields: const {
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'field(A#field1)': '87',
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},
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// Redirecting factories are replaced by their effective targets by CFE.
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text: 'const A<B<double>>(field1: 87)'),
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const ConstantData(
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'const B<int>.named()', ConstantExpressionKind.CONSTRUCTED,
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type: 'A<int>',
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fields: const {
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'field(A#field1)': '42',
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},
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// Redirecting factories are replaced by their effective targets by CFE.
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text: 'const A<int>()'),
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]),
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const TestData('''
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T identity<T>(T t) => t;
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class C<T> {
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final T defaultValue;
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final T Function(T t) identityFunction;
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const C(this.defaultValue, this.identityFunction);
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}
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''', const <ConstantData>[
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const ConstantData('identity', ConstantExpressionKind.FUNCTION),
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const ConstantData(
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'const C<int>(0, identity)', ConstantExpressionKind.CONSTRUCTED,
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type: 'C<int>', strongText: 'const C<int>(0, <int>(identity))'),
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const ConstantData(
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'const C<double>(0.5, identity)', ConstantExpressionKind.CONSTRUCTED,
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type: 'C<double>',
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strongText: 'const C<double>(0.5, <double>(identity))'),
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], strongModeOnly: true)
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];
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main() {
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asyncTest(() async {
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print('--test from kernel------------------------------------------------');
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await runTest(strongMode: false);
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print('--test from kernel (strong)---------------------------------------');
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await runTest(strongMode: true);
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});
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}
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Future runTest({bool strongMode}) async {
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for (TestData data in DATA) {
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await testData(data, strongMode: strongMode);
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}
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}
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Future testData(TestData data, {bool strongMode}) async {
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if (data.strongModeOnly && !strongMode) return;
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StringBuffer sb = new StringBuffer();
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sb.writeln('${data.declarations}');
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Map<String, ConstantData> constants = {};
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List<String> names = <String>[];
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data.constants.forEach((ConstantData constantData) {
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String name = 'c${constants.length}';
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names.add(name);
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sb.writeln('const $name = ${constantData.code};');
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constants[name] = constantData;
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});
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sb.writeln('main() {');
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for (String name in names) {
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sb.writeln(' print($name);');
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}
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sb.writeln('}');
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String source = sb.toString();
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CompilationResult result = await runCompiler(
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memorySourceFiles: {'main.dart': source},
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options: strongMode ? [Flags.strongMode] : []);
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Compiler compiler = result.compiler;
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var elementEnvironment = compiler.frontendStrategy.elementEnvironment;
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MemoryEnvironment environment = new MemoryEnvironment(
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new KernelEvaluationEnvironment(
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(compiler.frontendStrategy as dynamic).elementMap,
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compiler.environment,
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null));
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dynamic library = elementEnvironment.mainLibrary;
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constants.forEach((String name, ConstantData data) {
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FieldEntity field = elementEnvironment.lookupLibraryMember(library, name);
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dynamic constant = elementEnvironment.getFieldConstant(field);
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Expect.equals(
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data.kind,
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constant.kind,
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"Unexpected kind '${constant.kind}' for constant "
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"`${constant.toDartText()}`, expected '${data.kind}'.");
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String text = strongMode ? data.strongText : data.text;
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Expect.equals(
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text,
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constant.toDartText(),
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"Unexpected text '${constant.toDartText()}' for constant, "
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"expected '${text}'.");
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if (data.type != null) {
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String instanceType =
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constant.computeInstanceType(environment).toString();
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Expect.equals(
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data.type,
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instanceType,
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"Unexpected type '$instanceType' for constant "
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"`${constant.toDartText()}`, expected '${data.type}'.");
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}
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if (data.fields != null) {
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Map instanceFields = constant.computeInstanceData(environment).fieldMap;
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Expect.equals(
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data.fields.length,
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instanceFields.length,
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"Unexpected field count ${instanceFields.length} for constant "
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"`${constant.toDartText()}`, expected '${data.fields.length}'.");
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instanceFields.forEach((field, expression) {
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String name = '$field';
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Expect.isTrue(name.startsWith('k:'));
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name = name.substring(2).replaceAll('.', "#");
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String expression = instanceFields[field].toDartText();
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String expected = data.fields[name];
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Expect.equals(
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expected,
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expression,
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"Unexpected field expression ${expression} for field '$name' in "
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"constant `${constant.toDartText()}`, expected '${expected}'.");
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});
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}
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});
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}
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