dart::Symbol Class Reference

#include <object.h>

Inheritance diagram for dart::Symbol:

Static Public Member Functions
static bool	IsSymbolCid (Thread *thread, classid_t class_id)
static uint32_t	CanonicalizeHash (Thread *thread, const Instance &instance)

Detailed Description

Definition at line 10129 of file object.h.

Member Function Documentation

CanonicalizeHash()

uint32_t dart::Symbol::CanonicalizeHash ( Thread *  thread, const Instance &  instance  )

static

Definition at line 20340 of file object.cc.

                                                                          {
  ASSERT(IsSymbolCid(thread, instance.GetClassId()));
 
  auto zone = thread->zone();
  auto object_store = thread->isolate_group()->object_store();
 
  const auto& symbol_name_field =
      Field::Handle(zone, object_store->symbol_name_field());
  ASSERT(!symbol_name_field.IsNull());
 
  // Keep in sync with sdk/lib/_internal/vm/lib/symbol_patch.dart.
  const auto& name =
      String::Cast(Object::Handle(zone, instance.GetField(symbol_name_field)));
  const uint32_t arbitrary_prime = 664597;
  return 0x1fffffff & (arbitrary_prime * name.CanonicalizeHash());
}

IsSymbolCid()

bool dart::Symbol::IsSymbolCid ( Thread *  thread, classid_t  class_id  )

static

Definition at line 20334 of file object.cc.

                                                           {
  auto object_store = thread->isolate_group()->object_store();
  return Class::GetClassId(object_store->symbol_class()) == class_id;
}

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The documentation for this class was generated from the following files:

• third_party/dart-lang/sdk/runtime/vm/object.h
• third_party/dart-lang/sdk/runtime/vm/object.cc