Implement Object.{entries, values} built-in methods (#3993)

Object.keys also updated to follow the ES11 standard. JerryScript-DCO-1.0-Signed-off-by: Roland Takacs rtakacs@inf.u-szeged.hu
2020-07-14 15:59:40 +02:00
parent 9dbbcab49d
commit 8fdbc6a85b
9 changed files with 470 additions and 9 deletions
@@ -0,0 +1,134 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+var object = {};
+var symbol = Symbol("symbol");
+
+Object.defineProperties(object, {
+  a: {
+    value: 42,
+    enumerable: true
+  },
+  b: {
+    value: "foo",
+    enumerable: false
+  },
+  [symbol]: {
+    value: "symbol",
+    enumerable: true
+  }
+});
+
+// Object.keys and Object.entries should have the same keys
+var keys = Object.keys(object);
+var entries = Object.entries(object);
+
+assert(keys.length === entries.length);
+for (let i = 0; i < keys.length; i++) {
+  assert(keys[i] === entries[i][0]);
+}
+
+// Test object entries
+var entries = Object.entries(object);
+assert(entries instanceof Array);
+assert(entries.length === 1);
+assert(entries[0].length === 2);
+assert(entries[0][0] === "a");
+assert(entries[0][1] === 42);
+
+// Test array entries
+var array = [1, 2, "three"];
+var entries = Object.entries(array);
+
+assert(entries instanceof Array);
+assert(entries.length === array.length);
+
+for (let i = 0; i < entries.length; i++) {
+  assert(entries[i][0] === i + "");
+  assert(entries[i][1] === array[i]);
+}
+
+// Test prototype chain
+function Parent() {}
+Parent.prototype.inheritedMethod = function() {};
+
+function method() {};
+function Child() {
+  this.prop = 5;
+  this.method = method;
+}
+
+Child.prototype = new Parent;
+Child.prototype.prototypeMethod = function() {};
+
+var entries = Object.entries (new Child());
+assert(entries.length === 2);
+assert(entries[0][0] === "prop");
+assert(entries[0][1] === 5);
+assert(entries[1][0] === "method");
+assert(entries[1][1] === method);
+
+// Test with primitive values
+var entries = Object.entries(true);
+assert(entries instanceof Array);
+assert(entries.length === 0);
+
+try {
+  Object.entries(undefined);
+  assert(false);
+} catch (e) {
+  assert(e instanceof TypeError)
+}
+
+try {
+  Object.entries(null);
+  assert(false);
+} catch (e) {
+  assert(e instanceof TypeError)
+}
+
+// Test proxy object
+var object = {};
+
+Object.defineProperties(object, {
+  a: {
+    value: "foo",
+    enumerable: false
+  },
+  b: {
+    value: "bar",
+    enumerable: true,
+    writable: false
+  }
+});
+
+var proxy = new Proxy(object, {
+  getOwnPropertyDescriptor: function(o, v) {
+    handlers.push("D");
+    return Object.getOwnPropertyDescriptor(o, v);
+  },
+  get: function(o, v) {
+    handlers.push("G");
+    return o[v];
+  }
+});
+
+var handlers = [];
+var entries = Object.entries(proxy);
+
+assert(entries.length === 1);
+assert(entries[0][0] === "b");
+assert(entries[0][1] === "bar");
+assert(handlers.length === 3);
+assert(handlers.toString() === "D,D,G");
@@ -0,0 +1,46 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+var object = {};
+
+Object.defineProperties(object, {
+  a: {
+    value: "foo",
+    enumerable: false
+  },
+  b: {
+    value: "bar",
+    enumerable: true,
+    writable: false
+  }
+});
+
+var proxy = new Proxy(object, {
+  getOwnPropertyDescriptor: function(o, v) {
+    handlers.push("D");
+    return Object.getOwnPropertyDescriptor(o, v);
+  },
+  get: function(o, v) {
+    handlers.push("G");
+    return o[v];
+  }
+});
+
+var handlers = [];
+var keys = Object.keys(proxy);
+
+assert(keys.length === 1);
+assert(keys[0] === "b");
+assert(handlers.length === 2);
+assert(handlers.toString() === "D,D");
@@ -0,0 +1,127 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Test array
+var arr = ["a", "b", "c"];
+var values = Object.values(arr);
+
+assert(values.indexOf("a") === 0);
+assert(values.indexOf("b") === 1);
+assert(values.indexOf("c") === 2);
+assert(values.length === 3);
+
+// Test object
+var obj = {key1: "a", key3: "b", key2: "c", key4: "d", key5: "e"};
+var values = Object.values(obj);
+
+assert(values.indexOf("a") === 0);
+assert(values.indexOf("b") === 1);
+assert(values.indexOf("c") === 2);
+assert(values.indexOf("d") === 3);
+assert(values.indexOf("e") === 4);
+assert(values.length === 5);
+
+var obj2 = {};
+Object.defineProperties(obj2, {
+    key_one: {enumerable: true, value: "one"},
+    key_two: {enumerable: false, value: "two"},
+});
+
+var values = Object.values(obj2);
+// values should contain: key_one
+assert(values.indexOf("one") === 0);
+assert(values.indexOf("two") === -1);
+assert(values.length === 1);
+
+// Test prototype chain
+function Parent() {}
+Parent.prototype.inheritedMethod = function() {};
+
+function method() {};
+function Child() {
+  this.prop = 5;
+  this.method = method;
+}
+
+Child.prototype = new Parent;
+Child.prototype.prototypeMethod = function() {};
+
+var values = Object.values(new Child());
+
+assert(values.indexOf(5) === 0);
+assert(values.indexOf(method) === 1);
+assert(values.length === 2);
+
+// Check enumerable properties
+var o = {};
+
+Object.defineProperty(o, "a", {
+  value: "OK a",
+  writable: true,
+  enumerable: true,
+  configurable: true
+});
+
+Object.defineProperty(o, "b", {
+  value: "NOT_OK",
+  writable: true,
+  enumerable: false,
+  configurable: true
+});
+
+Object.defineProperty(o, "c", {
+  value: "OK c",
+  writable: true,
+  enumerable: true,
+  configurable: true
+});
+
+var values = Object.values(o);
+assert(values.length === 2);
+assert(values[0] === "OK a");
+assert(values[1] === "OK c");
+
+// Test proxy object
+var object = {};
+
+Object.defineProperties(object, {
+  a: {
+    value: "foo",
+    enumerable: false
+  },
+  b: {
+    value: "bar",
+    enumerable: true,
+    writable: false
+  }
+});
+
+var proxy = new Proxy(object, {
+  getOwnPropertyDescriptor: function(o, v) {
+    handlers.push("D");
+    return Object.getOwnPropertyDescriptor(o, v);
+  },
+  get: function(o, v) {
+    handlers.push("G");
+    return o[v];
+  }
+});
+
+var handlers = [];
+var values = Object.values(proxy);
+
+assert(values.length === 1);
+assert(values[0] === "bar")
+assert(handlers.length === 3);
+assert(handlers.toString() === "D,D,G");