dart::kernel::KernelSourceFingerprintHelper Class Reference

#include <kernel_fingerprints.h>

Inheritance diagram for dart::kernel::KernelSourceFingerprintHelper:

Static Public Member Functions
static uint32_t	CalculateClassFingerprint (const Class &klass)
static uint32_t	CalculateFieldFingerprint (const Field &field)
static uint32_t	CalculateFunctionFingerprint (const Function &func)

Detailed Description

Definition at line 18 of file kernel_fingerprints.h.

Member Function Documentation

CalculateClassFingerprint()

uint32_t dart::kernel::KernelSourceFingerprintHelper::CalculateClassFingerprint ( const Class &  klass )

static

Definition at line 957 of file kernel_fingerprints.cc.

                        {
  Zone* zone = Thread::Current()->zone();
  String& name = String::Handle(zone, klass.Name());
  const Array& fields = Array::Handle(zone, klass.fields());
  const Array& functions = Array::Handle(zone, klass.current_functions());
  const Array& interfaces = Array::Handle(zone, klass.interfaces());
  AbstractType& type = AbstractType::Handle(zone);
 
  uint32_t hash = 0;
  hash = KernelFingerprintHelper::CalculateHash(hash, name.Hash());
 
  type = klass.super_type();
  if (!type.IsNull()) {
    name = type.Name();
    hash = KernelFingerprintHelper::CalculateHash(hash, name.Hash());
  }
 
  Field& field = Field::Handle(zone);
  // Calculate fingerprint for the class fields.
  for (intptr_t i = 0; i < fields.Length(); ++i) {
    field ^= fields.At(i);
    uint32_t fingerprint = CalculateFieldFingerprint(field);
    hash = KernelFingerprintHelper::CalculateHash(hash, fingerprint);
  }
 
  // Calculate fingerprint for the class functions.
  Function& func = Function::Handle(zone);
  for (intptr_t i = 0; i < functions.Length(); ++i) {
    func ^= functions.At(i);
    uint32_t fingerprint = CalculateFunctionFingerprint(func);
    hash = KernelFingerprintHelper::CalculateHash(hash, fingerprint);
  }
 
  // Calculate fingerprint for the interfaces.
  for (intptr_t i = 0; i < interfaces.Length(); ++i) {
    type ^= interfaces.At(i);
    name = type.Name();
    hash = KernelFingerprintHelper::CalculateHash(hash, name.Hash());
  }
 
  return hash;
}

CalculateFieldFingerprint()

uint32_t dart::kernel::KernelSourceFingerprintHelper::CalculateFieldFingerprint ( const Field &  field )

static

Definition at line 1001 of file kernel_fingerprints.cc.

                        {
  Thread* thread = Thread::Current();
  Zone* zone = thread->zone();
  const auto& info = KernelProgramInfo::Handle(zone, field.KernelProgramInfo());
 
  TranslationHelper translation_helper(thread);
  translation_helper.InitFromKernelProgramInfo(info);
 
  KernelFingerprintHelper helper(
      zone, &translation_helper,
      TypedDataView::Handle(zone, field.KernelLibrary()),
      field.KernelLibraryOffset());
  helper.SetOffset(field.kernel_offset());
  return helper.CalculateFieldFingerprint();
}

CalculateFunctionFingerprint()

uint32_t dart::kernel::KernelSourceFingerprintHelper::CalculateFunctionFingerprint ( const Function &  func )

static

Definition at line 1018 of file kernel_fingerprints.cc.

                          {
  Thread* thread = Thread::Current();
  Zone* zone = thread->zone();
  const auto& info = KernelProgramInfo::Handle(zone, func.KernelProgramInfo());
 
  TranslationHelper translation_helper(thread);
  translation_helper.InitFromKernelProgramInfo(info);
 
  KernelFingerprintHelper helper(
      zone, &translation_helper,
      TypedDataView::Handle(zone, func.KernelLibrary()),
      func.KernelLibraryOffset());
  helper.SetOffset(func.kernel_offset());
  return helper.CalculateFunctionFingerprint();
}

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

• third_party/dart-lang/sdk/runtime/vm/compiler/frontend/kernel_fingerprints.h
• third_party/dart-lang/sdk/runtime/vm/compiler/frontend/kernel_fingerprints.cc