dart::bin::TypedDataScope Class Reference

#include <typed_data_utils.h>

Public Member Functions
	TypedDataScope (Dart_Handle data)
	~TypedDataScope ()
void	Release ()
const char *	GetCString () const
const char *	GetScopedCString () const
void *	data () const
intptr_t	length () const
intptr_t	size_in_bytes () const
Dart_TypedData_Type	type () const

Detailed Description

Definition at line 14 of file typed_data_utils.h.

Constructor & Destructor Documentation

TypedDataScope()

dart::bin::TypedDataScope::TypedDataScope ( Dart_Handle  data )

explicit

Definition at line 11 of file typed_data_utils.cc.

                                               : data_handle_(data) {
  Dart_Handle result;
  result = Dart_TypedDataAcquireData(data, &type_, &data_, &length_);
  if (Dart_IsError(result)) {
    Dart_PropagateError(result);
  }
}

~TypedDataScope()

dart::bin::TypedDataScope::~TypedDataScope ( )

inline

Definition at line 17 of file typed_data_utils.h.

{ Release(); }

Member Function Documentation

data()

void * dart::bin::TypedDataScope::data ( ) const

inline

Definition at line 27 of file typed_data_utils.h.

{ return data_; }

GetCString()

const char * dart::bin::TypedDataScope::GetCString ( ) const

inline

Definition at line 21 of file typed_data_utils.h.

                                 {
    return reinterpret_cast<const char*>(data_);
  }

GetScopedCString()

const char * dart::bin::TypedDataScope::GetScopedCString

(

)

const

Definition at line 58 of file typed_data_utils.cc.

                                                   {
  char* buf = reinterpret_cast<char*>(Dart_ScopeAllocate(size_in_bytes() + 1));
  strncpy(buf, GetCString(), size_in_bytes());
  buf[size_in_bytes()] = '\0';
  return buf;
}

length()

intptr_t dart::bin::TypedDataScope::length ( ) const

inline

Definition at line 28 of file typed_data_utils.h.

{ return length_; }

Release()

void dart::bin::TypedDataScope::Release

(

)

Definition at line 19 of file typed_data_utils.cc.

                             {
  if (data_handle_ == nullptr) {
    return;
  }
  Dart_Handle result = Dart_TypedDataReleaseData(data_handle_);
  if (Dart_IsError(result)) {
    Dart_PropagateError(result);
  }
  data_handle_ = nullptr;
  data_ = nullptr;
  length_ = 0;
  type_ = Dart_TypedData_kInvalid;
}

size_in_bytes()

intptr_t dart::bin::TypedDataScope::size_in_bytes

(

)

const

Definition at line 33 of file typed_data_utils.cc.

                                             {
  switch (type_) {
    case Dart_TypedData_kByteData:
    case Dart_TypedData_kInt8:
    case Dart_TypedData_kUint8:
    case Dart_TypedData_kUint8Clamped:
      return length_;
    case Dart_TypedData_kInt16:
    case Dart_TypedData_kUint16:
      return length_ * 2;
    case Dart_TypedData_kInt32:
    case Dart_TypedData_kUint32:
    case Dart_TypedData_kFloat32:
      return length_ * 4;
    case Dart_TypedData_kInt64:
    case Dart_TypedData_kUint64:
    case Dart_TypedData_kFloat64:
      return length_ * 8;
    case Dart_TypedData_kFloat32x4:
      return length_ * 16;
    default:
      UNREACHABLE();
  }
}

type()

Dart_TypedData_Type dart::bin::TypedDataScope::type ( ) const

inline

Definition at line 30 of file typed_data_utils.h.

{ return type_; }

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

• third_party/dart-lang/sdk/runtime/bin/typed_data_utils.h
• third_party/dart-lang/sdk/runtime/bin/typed_data_utils.cc