Robert Nystrom
a4b09ac192
Change-Id: I8b9b7d70abc47d672c68db65bc67d08beb7d41a7 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/142089 Commit-Queue: Bob Nystrom <rnystrom@google.com> Reviewed-by: Erik Ernst <eernst@google.com>
129 lines
5.0 KiB
Dart
129 lines
5.0 KiB
Dart
// Copyright (c) 2019, 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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// Test cases where the syntax is ambiguous between maps and sets because of
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// spreads inside control flow.
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import 'dart:collection';
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import 'utils.dart';
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void main() {
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testBottomUpInference();
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testTopDownInference();
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}
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void testBottomUpInference() {
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Map<int, int> map = {};
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Set<int> set = Set();
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dynamic dynMap = map;
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dynamic dynSet = set;
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Iterable<int> iterable = [];
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CustomSet customSet = CustomSet();
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CustomMap customMap = CustomMap();
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// Note: The commented out cases are the error cases. They are shown here for
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// completeness and tested in map_set_ambiguity_error_test.dart.
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expectMapOf<int, int>({if (true) ...map});
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expectSetOf<int>({if (true) ...set});
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// expect___Of<...>({if (true) ...dyn});
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expectSetOf<int>({if (true) ...iterable});
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expectSetOf<int>({if (true) ...customSet});
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expectMapOf<int, String>({if (true) ...customMap});
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expectMapOf<int, int>({if (true) ...map else ...map});
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// expect___Of<...>({if (true) ...map else ...set});
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expectMapOf<dynamic, dynamic>({if (true) ...map else ...dynMap});
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// expect___Of<...>({if (true) ...map else ...iterable});
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// expect___Of<...>({if (true) ...map else ...customSet});
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expectMapOf<int, Object>({if (true) ...map else ...customMap});
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expectSetOf<int>({if (true) ...set else ...set});
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expectSetOf<dynamic>({if (true) ...set else ...dynSet});
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expectSetOf<int>({if (true) ...set else ...iterable});
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expectSetOf<int>({if (true) ...set else ...customSet});
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// expect___Of<...>({if (true) ...set else ...customMap});
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// expect___Of<...>({if (true) ...dyn else ...dyn});
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expectSetOf<dynamic>({if (true) ...dynSet else ...iterable});
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expectSetOf<dynamic>({if (true) ...dynSet else ...customSet});
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expectMapOf<dynamic, dynamic>({if (true) ...dynMap else ...customMap});
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expectSetOf<int>({if (true) ...iterable else ...iterable});
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expectSetOf<int>({if (true) ...iterable else ...customSet});
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// expect___Of<...>({if (true) ...iterable else ...customMap});
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expectSetOf<int>({if (true) ...customSet else ...customSet});
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// expect___Of<...>({if (true) ...customSet else ...customMap});
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expectMapOf<int, String>({if (true) ...customMap else ...customMap});
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// Note: The commented out cases are the error cases. They are shown here for
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// completeness and tested in map_set_ambiguity_error_test.dart.
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expectMapOf<int, int>({for (; false;) ...map});
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expectSetOf<int>({for (; false;) ...set});
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// expect___Of<...>({for (; false;) ...dyn});
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expectSetOf<int>({for (; false;) ...iterable});
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expectSetOf<int>({for (; false;) ...customSet});
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expectMapOf<int, String>({for (; false;) ...customMap});
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expectMapOf<int, int>({for (; false;) ...map, for (; false;) ...map});
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// expect___Of<...>({for (; false;) ...map, for (; false;) ...set});
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expectMapOf<dynamic, dynamic>(
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{for (; false;) ...map, for (; false;) ...dynMap});
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// expect___Of<...>({for (; false;) ...map, for (; false;) ...iterable});
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// expect___Of<...>({for (; false;) ...map, for (; false;) ...customSet});
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expectMapOf<int, Object>(
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{for (; false;) ...map, for (; false;) ...customMap});
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expectSetOf<int>({for (; false;) ...set, for (; false;) ...set});
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expectSetOf<dynamic>({for (; false;) ...set, for (; false;) ...dynSet});
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expectSetOf<int>({for (; false;) ...set, for (; false;) ...iterable});
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expectSetOf<int>({for (; false;) ...set, for (; false;) ...customSet});
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// expect___Of<...>({for (; false;) ...set, for (; false;) ...customMap});
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// expect___Of<...>({for (; false;) ...dyn, for (; false;) ...dyn});
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expectSetOf<dynamic>(
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{for (; false;) ...dynSet, for (; false;) ...iterable});
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expectSetOf<dynamic>(
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{for (; false;) ...dynSet, for (; false;) ...customSet});
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expectMapOf<dynamic, dynamic>(
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{for (; false;) ...dynMap, for (; false;) ...customMap});
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expectSetOf<int>(
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{for (; false;) ...iterable, for (; false;) ...iterable});
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expectSetOf<int>(
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{for (; false;) ...iterable, for (; false;) ...customSet});
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// expect___Of<...>(
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// {for (; false;) ...iterable, for (; false;) ...customMap});
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expectSetOf<int>(
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{for (; false;) ...customSet, for (; false;) ...customSet});
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// expect___Of<...>(
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// {for (; false;) ...customSet, for (; false;) ...customMap});
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expectMapOf<int, String>(
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{for (; false;) ...customMap, for (; false;) ...customMap});
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}
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void testTopDownInference() {
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dynamic untypedMap = <int, int>{};
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dynamic untypedIterable = <int>[];
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Map<int, int> map = {if (true) ...untypedMap};
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Set<int> set = {if (true) ...untypedIterable};
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Iterable<int> iterable = {if (true) ...untypedIterable};
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expectMapOf<int, int>(map);
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expectSetOf<int>(set);
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expectSetOf<int>(iterable);
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map = {for (; false;) ...untypedMap};
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set = {for (; false;) ...untypedIterable};
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iterable = {for (; false;) ...untypedIterable};
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expectMapOf<int, int>(map);
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expectSetOf<int>(set);
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expectSetOf<int>(iterable);
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}
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