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tools	[ DIR ]	drwxr-xr-x
CHANGELOG.md	20.64 KB	-rw-r--r--
LICENSE.md	1.19 KB	-rw-r--r--
README.md	27.94 KB	-rw-r--r--
include_dirs.js	55 B	-rw-r--r--
nan.h	84.08 KB	-rw-r--r--
nan_callbacks.h	3.02 KB	-rw-r--r--
nan_callbacks_12_inl.h	17.13 KB	-rw-r--r--
nan_callbacks_pre_12_inl.h	16.68 KB	-rw-r--r--
nan_converters.h	2.06 KB	-rw-r--r--
nan_converters_43_inl.h	2.68 KB	-rw-r--r--
nan_converters_pre_43_inl.h	1.22 KB	-rw-r--r--
nan_define_own_property_helper...	1 KB	-rw-r--r--
nan_implementation_12_inl.h	14.69 KB	-rw-r--r--
nan_implementation_pre_12_inl....	7.76 KB	-rw-r--r--
nan_json.h	5.64 KB	-rw-r--r--
nan_maybe_43_inl.h	12.29 KB	-rw-r--r--
nan_maybe_pre_43_inl.h	8.04 KB	-rw-r--r--
nan_new.h	8.58 KB	-rw-r--r--
nan_object_wrap.h	4.03 KB	-rw-r--r--
nan_persistent_12_inl.h	3.78 KB	-rw-r--r--
nan_persistent_pre_12_inl.h	6.01 KB	-rw-r--r--
nan_private.h	2.42 KB	-rw-r--r--
nan_string_bytes.h	7.91 KB	-rw-r--r--
nan_typedarray_contents.h	2.8 KB	-rw-r--r--
nan_weak.h	14.99 KB	-rw-r--r--
package.json	1.54 KB	-rw-r--r--

Code Editor : nan_typedarray_contents.h

/*********************************************************************
 * NAN - Native Abstractions for Node.js
 *
 * Copyright (c) 2018 NAN contributors
 *
 * MIT License <https://github.com/nodejs/nan/blob/master/LICENSE.md>
 ********************************************************************/

#ifndef NAN_TYPEDARRAY_CONTENTS_H_
#define NAN_TYPEDARRAY_CONTENTS_H_

template<typename T>
class TypedArrayContents {
 public:
  inline explicit TypedArrayContents(v8::Local<v8::Value> from) :
      length_(0), data_(NULL) {
    HandleScope scope;

size_t length = 0;
    void*  data = NULL;

#if defined(V8_MAJOR_VERSION) && (V8_MAJOR_VERSION > 4 ||                      \
  (V8_MAJOR_VERSION == 4 && defined(V8_MINOR_VERSION) && V8_MINOR_VERSION >= 3))

if (from->IsArrayBufferView()) {
      v8::Local<v8::ArrayBufferView> array =
        v8::Local<v8::ArrayBufferView>::Cast(from);

const size_t    byte_length = array->ByteLength();
      const ptrdiff_t byte_offset = array->ByteOffset();
      v8::Local<v8::ArrayBuffer> buffer = array->Buffer();

length = byte_length / sizeof(T);
      data   = static_cast<char*>(buffer->GetContents().Data()) + byte_offset;
    }

#else

if (from->IsObject() && !from->IsNull()) {
      v8::Local<v8::Object> array = v8::Local<v8::Object>::Cast(from);

MaybeLocal<v8::Value> buffer = Get(array,
        New<v8::String>("buffer").ToLocalChecked());
      MaybeLocal<v8::Value> byte_length = Get(array,
        New<v8::String>("byteLength").ToLocalChecked());
      MaybeLocal<v8::Value> byte_offset = Get(array,
        New<v8::String>("byteOffset").ToLocalChecked());

if (!buffer.IsEmpty() &&
          !byte_length.IsEmpty() && byte_length.ToLocalChecked()->IsUint32() &&
          !byte_offset.IsEmpty() && byte_offset.ToLocalChecked()->IsUint32()) {
        data = array->GetIndexedPropertiesExternalArrayData();
        if(data) {
          length = byte_length.ToLocalChecked()->Uint32Value() / sizeof(T);
        }
      }
    }

#endif

#if defined(_MSC_VER) && _MSC_VER >= 1900 || __cplusplus >= 201103L
    assert(reinterpret_cast<uintptr_t>(data) % alignof (T) == 0);
#elif defined(_MSC_VER) && _MSC_VER >= 1600 || defined(__GNUC__)
    assert(reinterpret_cast<uintptr_t>(data) % __alignof(T) == 0);
#else
    assert(reinterpret_cast<uintptr_t>(data) % sizeof (T) == 0);
#endif

length_ = length;
    data_   = static_cast<T*>(data);
  }

inline size_t length() const      { return length_; }
  inline T* operator*()             { return data_;   }
  inline const T* operator*() const { return data_;   }

private:
  NAN_DISALLOW_ASSIGN_COPY_MOVE(TypedArrayContents)

//Disable heap allocation
  void *operator new(size_t size);
  void operator delete(void *, size_t) {
    abort();
  }

size_t  length_;
  T*      data_;
};

#endif  // NAN_TYPEDARRAY_CONTENTS_H_

${this.title}

Code Editor : nan_typedarray_contents.h