Implement {Array, %TypedArray%, String}.prototype.at method (#4681)
The following methods were implemented: - Array.prototype.at based on ECMA-262 Stage 3 Draft Relative Indexing Method proposal - String.prototype.at based on ECMA-262 Stage 3 Draft Relative Indexing Method proposal - TypedArray.prototype.at based on ECMA-262 Stage 3 Draft Relative Indexing Method proposal https://tc39.es/proposal-relative-indexing-method/ JerryScript-DCO-1.0-Signed-off-by: Daniel Batiz batizjob@gmail.com
This commit is contained in:
batizdaniel
@@ -0,0 +1,50 @@
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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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var obj = {};
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var array = ['Apple', 'Banana', "zero", 0, obj, 'Apple'];
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var index = array.at(0);
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assert(index === 'Apple');
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assert(array[index] === undefined);
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assert(array.at(array.length) === undefined);
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assert(array.at(array.length+1) === undefined);
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assert(array.at(array.length-1) === 'Apple');
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assert(array.at("1") === 'Banana');
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assert(array.at(-1) === 'Apple');
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assert(array.at("-1") === 'Apple');
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assert(array.at("-20") === undefined);
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/* 7 */
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var obj = {}
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obj.length = 1;
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Object.defineProperty(obj, '0', { 'get' : function () {throw new ReferenceError ("foo"); } });
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obj.at = Array.prototype.at;
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try {
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obj.at(0);
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assert(false);
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} catch(e) {
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assert(e.message === "foo");
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assert(e instanceof ReferenceError);
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}
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try {
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Array.prototype.at.call(undefined)
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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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@@ -13,5 +13,5 @@
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// limitations under the License.
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var expected = '{"copyWithin":true,"entries":true,"fill":true,"find":true,"findIndex":true,"flat":true,"flatMap":true,"includes":true,"keys":true,"values":true}';
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var expected = '{"at":true,"copyWithin":true,"entries":true,"fill":true,"find":true,"findIndex":true,"flat":true,"flatMap":true,"includes":true,"keys":true,"values":true}';
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assert(JSON.stringify(Array.prototype[Symbol.unscopables]) === expected);
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@@ -0,0 +1,50 @@
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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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var str = 'This is an Apple';
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/* Basic tests */
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var index = str.at(0);
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assert(index === 'T');
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assert(str[index] === undefined);
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assert(str.at(str.length) === undefined);
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assert(str.at(str.length+1) === undefined);
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assert(str.at(str.length-1) === 'e');
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assert(str.at("1") === 'h');
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assert(str.at(-1) === 'e');
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assert(str.at("-1") === 'e');
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assert(str.at("-20") === undefined);
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try {
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String.prototype.at.call(undefined)
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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 obj = {toString: function() { return "Apple"; } };
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obj.at = String.prototype.at;
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assert(obj.at(0) === 'A');
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/* BigInteger as num and char */
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assert(str.at("1n") === 'T')
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try {
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str.at (10n);
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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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@@ -0,0 +1,82 @@
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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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/* Integer */
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var normal_typedarrays = [
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new Int8Array([0, 1, 2, 3, 0, 5, 6]),
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new Uint8Array([0, 1, 2, 3, 0, 5, 6]),
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new Uint8ClampedArray([0, 1, 2, 3, 0, 5, 6]),
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new Int16Array([0, 1, 2, 3, 0, 5, 6]),
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new Uint16Array([0, 1, 2, 3, 0, 5, 6]),
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new Int32Array([0, 1, 2, 3, 0, 5, 6]),
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new Uint32Array([0, 1, 2, 3, 0, 5, 6]),
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];
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/* Float */
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var float_typedarrays = [
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new Float32Array([1.5, 1.5, 2.5, 3.5, 0.5, 5.5, 10.5]),
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new Float64Array([1.5, 2.5, 3.5, 0.5, 5.5, 6.5, 10.5]),
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];
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/* BigInt */
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var bigint_typedarrays = [
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new BigInt64Array([3n, 10n, 2n, 3n, 4n, 5n, 6n]),
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new BigUint64Array([3n, 1n, 2n, 3n, 33n, 5n, 6n])
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];
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var index = normal_typedarrays[0].at(0);
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assert(index === 0);
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assert(normal_typedarrays[index].at(0) === 0);
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/* Integer input */
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normal_typedarrays.forEach(function(e){
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assert(e.at(normal_typedarrays[1].length) === undefined);
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assert(e.at(normal_typedarrays[2].length+1) === undefined);
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assert(e.at(normal_typedarrays[3].length-1) === 6);
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assert(e.at(0) === 0);
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assert(e.at("-1") === 6);
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assert(e.at(-1) === 6);
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assert(e.at("-20") === undefined);
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assert(e.at(100) === undefined)
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});
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/* Float input */
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float_typedarrays.forEach(function(f){
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assert(f.at(float_typedarrays[1].length) === undefined);
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assert(f.at(0) === 1.5);
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assert(f.at("-1") === 10.5);
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assert(f.at(-1) === 10.5);
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assert(f.at("-20") === undefined);
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assert(f.at(100) === undefined)
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});
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/* BigInt input */
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bigint_typedarrays.forEach(function(b){
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assert(b.at(bigint_typedarrays[1].length) === undefined);
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assert(b.at(0) === 3n);
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assert(b.at("-1") === 6n);
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assert(b.at(-1) === 6n);
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assert(b.at("-20") === undefined);
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assert(b.at(100) === undefined)
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});
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normal_typedarrays.forEach(function(e){
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try {
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e.prototype.at.call(undefined);
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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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