dart/sdk/lib/_internal/compiler/implementation/types/union_type_mask.dart - Issue 17569004: Implement hashCode on objects stored in a set or used as map keys.

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Unified Diff: dart/sdk/lib/_internal/compiler/implementation/types/union_type_mask.dart

Issue 17569004: Implement hashCode on objects stored in a set or used as map keys. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge

Patch Set: Created 7 years, 6 months ago

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Index: dart/sdk/lib/_internal/compiler/implementation/types/union_type_mask.dart

diff --git a/dart/sdk/lib/_internal/compiler/implementation/types/union_type_mask.dart b/dart/sdk/lib/_internal/compiler/implementation/types/union_type_mask.dart

index 8f1a4ff826ea252d7b5707a84ae4376aab3fabf1..ed4eb2bfde7e2486094dcb60b8b6080ae19beddd 100644

--- a/dart/sdk/lib/_internal/compiler/implementation/types/union_type_mask.dart

+++ b/dart/sdk/lib/_internal/compiler/implementation/types/union_type_mask.dart

@@ -266,4 +266,12 @@ class UnionTypeMask implements TypeMask {

&& other.disjointMasks.length == disjointMasks.length

&& other.disjointMasks.every((e) => disjointMasks.contains(e));

}

+ int get hashCode {

+ int hashCode = 43;

+ for (var mask in disjointMasks) {

+ hashCode = (hashCode ^ mask.hashCode) & 0x3fffffff;

+ }

+ return hashCode;

+ }

}