// Copyright 2013 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. "use strict"; var $ArrayBuffer = global.ArrayBuffer; // ------------------------------------------------------------------- function ArrayBufferConstructor(length) { // length = 1 if (%_IsConstructCall()) { var byteLength = ToPositiveInteger(length, 'invalid_array_buffer_length'); %ArrayBufferInitialize(this, byteLength); } else { throw MakeTypeError('constructor_not_function', ["ArrayBuffer"]); } } function ArrayBufferGetByteLength() { if (!IS_ARRAYBUFFER(this)) { throw MakeTypeError('incompatible_method_receiver', ['ArrayBuffer.prototype.byteLength', this]); } return %ArrayBufferGetByteLength(this); } // ES6 Draft 15.13.5.5.3 function ArrayBufferSlice(start, end) { if (!IS_ARRAYBUFFER(this)) { throw MakeTypeError('incompatible_method_receiver', ['ArrayBuffer.prototype.slice', this]); } var relativeStart = TO_INTEGER(start); var first; if (relativeStart < 0) { first = MathMax(this.byteLength + relativeStart, 0); } else { first = MathMin(relativeStart, this.byteLength); } var relativeEnd = IS_UNDEFINED(end) ? this.byteLength : TO_INTEGER(end); var fin; if (relativeEnd < 0) { fin = MathMax(this.byteLength + relativeEnd, 0); } else { fin = MathMin(relativeEnd, this.byteLength); } if (fin < first) { fin = first; } var newLen = fin - first; // TODO(dslomov): implement inheritance var result = new $ArrayBuffer(newLen); %ArrayBufferSliceImpl(this, result, first); return result; } function SetUpArrayBuffer() { %CheckIsBootstrapping(); // Set up the ArrayBuffer constructor function. %SetCode($ArrayBuffer, ArrayBufferConstructor); %FunctionSetPrototype($ArrayBuffer, new $Object()); // Set up the constructor property on the ArrayBuffer prototype object. %SetProperty($ArrayBuffer.prototype, "constructor", $ArrayBuffer, DONT_ENUM); InstallGetter($ArrayBuffer.prototype, "byteLength", ArrayBufferGetByteLength); InstallFunctions($ArrayBuffer.prototype, DONT_ENUM, $Array( "slice", ArrayBufferSlice )); } SetUpArrayBuffer();