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ArrayBufferView.hx
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ArrayBufferView.hx
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/*
* Copyright (C)2005-2019 Haxe Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
package haxe.io;
typedef ArrayBufferViewData = ArrayBufferViewImpl;
class ArrayBufferViewImpl {
public var bytes:haxe.io.Bytes;
public var byteOffset:Int;
public var byteLength:Int;
public function new(bytes, pos, length) {
this.bytes = bytes;
this.byteOffset = pos;
this.byteLength = length;
}
public function sub(begin:Int, ?length:Int) {
if (length == null)
length = byteLength - begin;
if (begin < 0 || length < 0 || begin + length > byteLength)
throw Error.OutsideBounds;
return new ArrayBufferViewImpl(bytes, byteOffset + begin, length);
}
public function subarray(?begin:Int, ?end:Int) {
if (begin == null)
begin = 0;
if (end == null)
end = byteLength - begin;
return sub(begin, end - begin);
}
}
abstract ArrayBufferView(ArrayBufferViewData) {
public var buffer(get, never):haxe.io.Bytes;
public var byteOffset(get, never):Int;
public var byteLength(get, never):Int;
public inline function new(size:Int) {
this = new ArrayBufferViewData(haxe.io.Bytes.alloc(size), 0, size);
}
inline function get_byteOffset():Int
return this.byteOffset;
inline function get_byteLength():Int
return this.byteLength;
inline function get_buffer():haxe.io.Bytes
return this.bytes;
public inline function sub(begin:Int, ?length:Int):ArrayBufferView {
return fromData(this.sub(begin, length));
}
public inline function subarray(?begin:Int, ?end:Int):ArrayBufferView {
return fromData(this.subarray(begin, end));
}
public inline function getData():ArrayBufferViewData {
return this;
}
public static inline function fromData(a:ArrayBufferViewData):ArrayBufferView {
return cast a;
}
public static function fromBytes(bytes:haxe.io.Bytes, pos = 0, ?length:Int):ArrayBufferView {
if (length == null)
length = bytes.length - pos;
if (pos < 0 || length < 0 || pos + length > bytes.length)
throw Error.OutsideBounds;
return fromData(new ArrayBufferViewData(bytes, pos, length));
}
}