Implement DataView builtin (#2804)
New API functions: - jerry_create_dataview - jerry_value_is_dataview - jerry_get_dataview_buffer JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
committed by
László Langó
László Langó
parent
b3f4aa6816
commit
5c72d995e4
@@ -0,0 +1,229 @@
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/* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* ES2015 24.2.2.1.1 */
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try {
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DataView ();
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assert (false);
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} catch (e) {
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assert (e instanceof TypeError);
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}
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/* ES2015 24.2.2.1.2 */
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try {
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new DataView (5);
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assert (false);
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} catch (e) {
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assert (e instanceof TypeError);
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}
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/* ES2015 24.2.2.1.3 */
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try {
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new DataView ({});
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assert (false);
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} catch (e) {
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assert (e instanceof TypeError);
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}
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var buffer = new ArrayBuffer (16);
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/* ES2015 24.2.2.1.6 */
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try {
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new DataView (buffer, { toString: function () { throw new ReferenceError ('foo') } });
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assert (false);
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} catch (e) {
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assert (e instanceof ReferenceError);
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assert (e.message === 'foo');
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}
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/* ES2015 24.2.2.1.7 (numberOffset != offset)*/
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try {
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new DataView (buffer, 1.5);
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assert (false);
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} catch (e) {
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assert (e instanceof RangeError);
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}
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/* ES2015 24.2.2.1.7 (offset < 0) */
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try {
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new DataView (buffer, -1);
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assert (false);
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} catch (e) {
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assert (e instanceof RangeError);
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}
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/* ES2015 24.2.2.1.10 */
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try {
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new DataView (buffer, 17);
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assert (false);
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} catch (e) {
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assert (e instanceof RangeError);
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}
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/* ES2015 24.2.2.1.12.b */
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try {
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new DataView (buffer, 0, { toString: function () { throw new ReferenceError ('bar') } });
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assert (false);
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} catch (e) {
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assert (e instanceof ReferenceError);
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assert (e.message === 'bar');
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}
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/* ES2015 24.2.2.1.12.b */
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try {
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new DataView (buffer, 0, Infinity);
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assert (false);
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} catch (e) {
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assert (e instanceof RangeError);
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}
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/* ES2015 24.2.2.1.12.c */
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try {
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new DataView (buffer, 4, 13);
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assert (false);
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} catch (e) {
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assert (e instanceof RangeError);
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}
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/* Tests accessors: ES2015 24.2.2.1 - 24.2.2.3 */
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var accessorList = ['buffer', 'byteOffset', 'byteLength'];
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accessorList.forEach (function (prop) {
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/* ES2015 24.2.4.{1, 2, 3}.{2, 3} */
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try {
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var obj = {};
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Object.setPrototypeOf (obj, DataView.prototype);
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obj[prop];
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assert (false);
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} catch (e) {
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assert (e instanceof TypeError);
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}
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});
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buffer = new ArrayBuffer (32);
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var view1 = new DataView (buffer);
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assert (view1.buffer === buffer);
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assert (view1.byteOffset === 0);
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assert (view1.byteLength === buffer.byteLength);
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var view2 = new DataView (buffer, 8);
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assert (view2.buffer === buffer);
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assert (view2.byteOffset === 8);
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assert (view2.byteLength === buffer.byteLength - view2.byteOffset);
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var view3 = new DataView (buffer, 8, 16);
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assert (view3.buffer === buffer);
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assert (view3.byteOffset === 8);
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assert (view3.byteLength === 16);
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/* Test get/set routines */
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var getters = ['getInt8', 'getUint8', 'getInt16', 'getUint16', 'getInt32', 'getUint32', 'getFloat32', 'getFloat64'];
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var setters = ['setInt8', 'setUint8', 'setInt16', 'setUint16', 'setInt32', 'setUint32', 'setFloat32', 'setFloat64'];
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var gettersSetters = getters.concat (setters);
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gettersSetters.forEach (function (propName) {
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/* ES2015 24.2.1.{1, 2}.1 */
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var routine = DataView.prototype[propName];
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try {
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DataView.prototype[propName].call (5);
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assert (false);
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} catch (e) {
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assert (e instanceof TypeError);
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}
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/* ES2015 24.2.1.{1, 2}.2 */
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try {
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DataView.prototype[propName].call ({});
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assert (false);
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} catch (e) {
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assert (e instanceof TypeError);
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}
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/* ES2015 24.2.1.{1, 2}.5 */
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try {
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var buffer = new ArrayBuffer (16);
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var view = new DataView (buffer)
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view[propName] ({ toString : function () { throw new ReferenceError ('fooBar') } });
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assert (false);
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} catch (e) {
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assert (e instanceof ReferenceError);
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assert (e.message == 'fooBar');
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}
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var buffer = new ArrayBuffer (16);
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var view = new DataView (buffer)
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/* ES2015 24.2.1.{1, 2}.6 (numberIndex != getIndex) */
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try {
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view[propName] (1.5);
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assert (false);
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} catch (e) {
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assert (e instanceof RangeError);
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}
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/* ES2015 24.2.1.{1, 2}.6 (getIndex < 0) */
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try {
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view[propName] (-1);
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assert (false);
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} catch (e) {
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assert (e instanceof RangeError);
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}
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/* ES2015 24.2.1.{1, 2}.13 */
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try {
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view[propName] (20);
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assert (false);
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} catch (e) {
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assert (e instanceof RangeError);
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}
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});
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/* Test the endianness */
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function validateResult (view, offset, isLitteEndian, results) {
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for (var i = 0; i < getters.length; i++) {
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assert (results[i] === view[getters[i]](offset, isLitteEndian));
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}
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}
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buffer = new ArrayBuffer (24);
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view1 = new DataView (buffer);
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view2 = new DataView (buffer, 4, 12);
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view3 = new DataView (buffer, 6, 18);
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view1.setUint8 (0, 255);
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validateResult(view1, 0, false, [-1, 255, -256, 65280, -16777216, 4278190080, -1.7014118346046924e+38, -5.486124068793689e+303]);
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validateResult(view1, 0, true, [-1, 255, 255, 255, 255, 255, 3.5733110840282835e-43, 1.26e-321]);
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validateResult(view1, 2, false, [0, 0, 0, 0, 0, 0, 0, 0]);
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validateResult(view1, 2, true, [0, 0, 0, 0, 0, 0, 0, 0]);
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view1.setInt16 (4, 40000);
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validateResult(view1, 4, false, [-100, 156, -25536, 40000, -1673527296, 2621440000, -6.352747104407253e-22, -1.2938158758247024e-172]);
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validateResult(view2, 0, false, [-100, 156, -25536, 40000, -1673527296, 2621440000, -6.352747104407253e-22, -1.2938158758247024e-172]);
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validateResult(view1, 4, true, [-100, 156, 16540, 16540, 16540, 16540, 2.3177476599932474e-41, 8.172e-320]);
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validateResult(view2, 0, true, [-100, 156, 16540, 16540, 16540, 16540, 2.3177476599932474e-41, 8.172e-320]);
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view2.setUint32 (2, 3000000000, true);
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validateResult(view2, 2, false, [0, 0, 94, 94, 6213810, 6213810, 8.707402410606192e-39, 6.856613170926581e-307]);
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validateResult(view3, 0, false, [0, 0, 94, 94, 6213810, 6213810, 8.707402410606192e-39, 6.856613170926581e-307]);
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validateResult(view2, 2, true, [0, 0, 24064, 24064, -1294967296, 3000000000, -2.425713319098577e-8, 1.4821969375e-314]);
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validateResult(view3, 0, true, [0, 0, 24064, 24064, -1294967296, 3000000000, -2.425713319098577e-8, 1.4821969375e-314]);
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view3.setFloat32 (4, 8.5);
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validateResult(view3, 4, false, [65, 65, 16648, 16648, 1091043328, 1091043328, 8.5, 196608]);
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validateResult(view3, 4, true, [65, 65, 2113, 2113, 2113, 2113, 2.9609436551183385e-42, 1.044e-320]);
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validateResult(view2, 4, false, [-48, 208, -12110, 53426, -793624312, 3501342984, -23924850688, -5.411000515087672e+80]);
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validateResult(view2, 4, true, [-48, 208, -19760, 45776, 138523344, 138523344, 5.828901796903399e-34, 6.84396254e-316]);
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@@ -1,49 +0,0 @@
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// Copyright JS Foundation and other contributors, http://js.foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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var recursion_counter = 0;
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var recursion_limit = 1000;
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var fz_globalObject = this
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function fz_is_primitive(value) {
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var value_type = typeof value
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if (value_type !== "function" && value_type !== "object")
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return value_type
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}
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function fz_starts_with(str, pattern) {
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for (var i = 0; i < pattern.length; i++)
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if (str[i] !== pattern[i])
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return
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return true
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}
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function fz_collect_values(value) {
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if (++recursion_counter >= recursion_limit) {
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return
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}
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var primitive = fz_is_primitive(value)
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if (primitive)
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return
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var prop_names = Object.getOwnPropertyNames(value)
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for (var i = 0; i < prop_names.length; i++) {
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var prop_name = prop_names[i]
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if (!fz_starts_with(prop_name, "fz_")) {
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fz_collect_values(value[prop_name])
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}
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}
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}
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fz_collect_values(fz_globalObject)
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@@ -0,0 +1,103 @@
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/* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "jerryscript.h"
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#include "jerryscript-port.h"
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#include "jerryscript-port-default.h"
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#include "test-common.h"
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int
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main (void)
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{
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if (!jerry_is_feature_enabled (JERRY_FEATURE_DATAVIEW))
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{
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jerry_port_log (JERRY_LOG_LEVEL_ERROR, "DataView support is disabled!\n");
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return 0;
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}
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/* DataView builtin requires the TypedArray builtin */
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TEST_ASSERT (jerry_is_feature_enabled (JERRY_FEATURE_TYPEDARRAY));
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jerry_init (JERRY_INIT_EMPTY);
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/* Test accessors */
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jerry_value_t arraybuffer = jerry_create_arraybuffer (16);
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jerry_value_t view1 = jerry_create_dataview (arraybuffer, 0, 16);
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TEST_ASSERT (!jerry_value_is_error (view1));
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TEST_ASSERT (jerry_value_is_dataview (view1));
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jerry_length_t byteOffset = 0;
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jerry_length_t byteLength = 0;;
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jerry_value_t internal_buffer = jerry_get_dataview_buffer (view1, &byteOffset, &byteLength);
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TEST_ASSERT (jerry_binary_operation (JERRY_BIN_OP_STRICT_EQUAL, internal_buffer, arraybuffer));
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TEST_ASSERT (byteOffset == 0);
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TEST_ASSERT (byteLength == 16);
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jerry_release_value (internal_buffer);
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jerry_value_t view2 = jerry_create_dataview (arraybuffer, 12, 4);
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TEST_ASSERT (!jerry_value_is_error (view1));
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TEST_ASSERT (jerry_value_is_dataview (view2));
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internal_buffer = jerry_get_dataview_buffer (view2, &byteOffset, &byteLength);
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TEST_ASSERT (jerry_binary_operation (JERRY_BIN_OP_STRICT_EQUAL, internal_buffer, arraybuffer));
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TEST_ASSERT (byteOffset == 12);
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TEST_ASSERT (byteLength == 4);
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jerry_release_value (internal_buffer);
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/* Test invalid construction */
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jerry_value_t empty_object = jerry_create_object ();
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jerry_value_t view3 = jerry_create_dataview (empty_object, 20, 10);
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TEST_ASSERT (jerry_value_is_error (view3));
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jerry_value_t error_obj = jerry_get_value_from_error (view3, true);
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TEST_ASSERT (jerry_get_error_type (error_obj) == JERRY_ERROR_TYPE);
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jerry_release_value (error_obj);
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jerry_release_value (empty_object);
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jerry_value_t view4 = jerry_create_dataview (arraybuffer, 20, 10);
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TEST_ASSERT (jerry_value_is_error (view3));
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error_obj = jerry_get_value_from_error (view4, true);
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TEST_ASSERT (jerry_get_error_type (error_obj) == JERRY_ERROR_RANGE);
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jerry_release_value (error_obj);
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/* Test getting/setting values */
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jerry_value_t global_obj = jerry_get_global_object ();
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jerry_value_t view1_str = jerry_create_string ((const jerry_char_t *) "view1");
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jerry_value_t view2_str = jerry_create_string ((const jerry_char_t *) "view2");
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TEST_ASSERT (jerry_set_property (global_obj, view1_str, view1));
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TEST_ASSERT (jerry_set_property (global_obj, view2_str, view2));
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jerry_release_value (view1_str);
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jerry_release_value (view2_str);
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jerry_release_value (global_obj);
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const jerry_char_t set_src[] = "view1.setInt16 (12, 255)";
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TEST_ASSERT (jerry_value_is_undefined (jerry_eval (set_src, sizeof (set_src) - 1, JERRY_PARSE_NO_OPTS)));
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const jerry_char_t get_src[] = "view2.getInt16 (0)";
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TEST_ASSERT (jerry_get_number_value (jerry_eval (get_src, sizeof (get_src) - 1, JERRY_PARSE_NO_OPTS)) == 255);
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const jerry_char_t get_src_little_endian[] = "view2.getInt16 (0, true)";
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TEST_ASSERT (jerry_get_number_value (jerry_eval (get_src_little_endian,
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sizeof (get_src_little_endian) - 1,
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JERRY_PARSE_NO_OPTS)) == -256);
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/* Cleanup */
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jerry_release_value (view2);
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jerry_release_value (view1);
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jerry_release_value (arraybuffer);
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jerry_cleanup ();
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return 0;
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} /* main */
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