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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 namespace blink { | 5 namespace blink { |
| 6 | 6 |
| 7 // Note: do not add any copy or move constructors to this class: doing so will | 7 // Note: do not add any copy or move constructors to this class: doing so will |
| 8 // break test coverage that we don't clobber the class name by trying to emit | 8 // break test coverage that we don't clobber the class name by trying to emit |
| 9 // replacements for synthesized functions. | 9 // replacements for synthesized functions. |
| 10 class C { | 10 class C { |
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| 76 // as in mojo. But their names are unique so we can globally treat them as | 76 // as in mojo. But their names are unique so we can globally treat them as |
| 77 // type traits for renaming. | 77 // type traits for renaming. |
| 78 struct GloballyKnownTraits { | 78 struct GloballyKnownTraits { |
| 79 static const bool safeToCompareToEmptyOrDeleted = false; | 79 static const bool safeToCompareToEmptyOrDeleted = false; |
| 80 }; | 80 }; |
| 81 | 81 |
| 82 } // namespace not_blink | 82 } // namespace not_blink |
| 83 | 83 |
| 84 namespace WTF { | 84 namespace WTF { |
| 85 | 85 |
| 86 void testForTraits() { |
| 87 bool a = blink::IsGarbageCollectedMixin::safeToCompareToEmptyOrDeleted; |
| 88 bool b = not_blink::GloballyKnownTraits::safeToCompareToEmptyOrDeleted; |
| 89 } |
| 90 |
| 86 // We don't want to capitalize fields in type traits | 91 // We don't want to capitalize fields in type traits |
| 87 // (i.e. the |value| -> |kValue| rename is undesirable below). | 92 // (i.e. the |value| -> |kValue| rename is undesirable below). |
| 88 struct TypeTrait1 { | 93 struct TypeTrait1 { |
| 89 static const bool value = true; | 94 static const bool value = true; |
| 90 }; | 95 }; |
| 91 | 96 |
| 92 // Some type traits are implemented as classes, not structs | 97 // Some type traits are implemented as classes, not structs |
| 93 // (e.g. WTF::IsGarbageCollectedType or WTF::IsAssignable). | 98 // (e.g. WTF::IsGarbageCollectedType or WTF::IsAssignable). |
| 94 // We should not perform a |value| -> |kValue| rename in the type trait below. | 99 // We should not perform a |value| -> |kValue| rename in the type trait below. |
| 95 template <typename T> | 100 template <typename T> |
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| 175 // Test that references to a static field are correctly rewritten. | 180 // Test that references to a static field are correctly rewritten. |
| 176 blink::C::instanceCount++; | 181 blink::C::instanceCount++; |
| 177 // Force instantiation of a copy constructor for blink::C to make sure field | 182 // Force instantiation of a copy constructor for blink::C to make sure field |
| 178 // initializers for synthesized functions don't cause weird rewrites. | 183 // initializers for synthesized functions don't cause weird rewrites. |
| 179 blink::C c; | 184 blink::C c; |
| 180 blink::C c2 = c; | 185 blink::C c2 = c; |
| 181 | 186 |
| 182 bool b1 = WTF::TypeTrait1::value; | 187 bool b1 = WTF::TypeTrait1::value; |
| 183 bool b2 = WTF::TypeTrait2<void>::value; | 188 bool b2 = WTF::TypeTrait2<void>::value; |
| 184 } | 189 } |
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