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https://github.com/dart-lang/sdk
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98 lines
3 KiB
C++
98 lines
3 KiB
C++
// Copyright (c) 2016, 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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#ifndef RUNTIME_VM_TYPE_TABLE_H_
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#define RUNTIME_VM_TYPE_TABLE_H_
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#include "platform/assert.h"
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#include "vm/hash_table.h"
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#include "vm/object.h"
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namespace dart {
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class CanonicalTypeKey {
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public:
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explicit CanonicalTypeKey(const Type& key) : key_(key) {}
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bool Matches(const Type& arg) const { return key_.Equals(arg); }
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uword Hash() const { return key_.Hash(); }
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const Type& key_;
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private:
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DISALLOW_ALLOCATION();
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};
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// Traits for looking up Canonical Type based on it's hash.
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class CanonicalTypeTraits {
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public:
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static const char* Name() { return "CanonicalTypeTraits"; }
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static bool ReportStats() { return false; }
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// Called when growing the table.
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static bool IsMatch(const Object& a, const Object& b) {
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ASSERT(a.IsType() && b.IsType());
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const Type& arg1 = Type::Cast(a);
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const Type& arg2 = Type::Cast(b);
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return arg1.Equals(arg2) && (arg1.Hash() == arg2.Hash());
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}
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static bool IsMatch(const CanonicalTypeKey& a, const Object& b) {
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ASSERT(b.IsType());
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return a.Matches(Type::Cast(b));
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}
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static uword Hash(const Object& key) {
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ASSERT(key.IsType());
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return Type::Cast(key).Hash();
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}
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static uword Hash(const CanonicalTypeKey& key) { return key.Hash(); }
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static RawObject* NewKey(const CanonicalTypeKey& obj) {
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return obj.key_.raw();
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}
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};
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typedef UnorderedHashSet<CanonicalTypeTraits> CanonicalTypeSet;
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class CanonicalTypeArgumentsKey {
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public:
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explicit CanonicalTypeArgumentsKey(const TypeArguments& key) : key_(key) {}
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bool Matches(const TypeArguments& arg) const {
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return key_.Equals(arg) && (key_.Hash() == arg.Hash());
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}
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uword Hash() const { return key_.Hash(); }
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const TypeArguments& key_;
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private:
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DISALLOW_ALLOCATION();
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};
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// Traits for looking up Canonical TypeArguments based on its hash.
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class CanonicalTypeArgumentsTraits {
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public:
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static const char* Name() { return "CanonicalTypeArgumentsTraits"; }
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static bool ReportStats() { return false; }
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// Called when growing the table.
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static bool IsMatch(const Object& a, const Object& b) {
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ASSERT(a.IsTypeArguments() && b.IsTypeArguments());
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const TypeArguments& arg1 = TypeArguments::Cast(a);
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const TypeArguments& arg2 = TypeArguments::Cast(b);
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return arg1.Equals(arg2) && (arg1.Hash() == arg2.Hash());
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}
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static bool IsMatch(const CanonicalTypeArgumentsKey& a, const Object& b) {
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ASSERT(b.IsTypeArguments());
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return a.Matches(TypeArguments::Cast(b));
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}
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static uword Hash(const Object& key) {
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ASSERT(key.IsTypeArguments());
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return TypeArguments::Cast(key).Hash();
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}
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static uword Hash(const CanonicalTypeArgumentsKey& key) { return key.Hash(); }
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static RawObject* NewKey(const CanonicalTypeArgumentsKey& obj) {
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return obj.key_.raw();
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}
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};
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typedef UnorderedHashSet<CanonicalTypeArgumentsTraits>
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CanonicalTypeArgumentsSet;
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} // namespace dart
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#endif // RUNTIME_VM_TYPE_TABLE_H_
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