Reviewers: adamk, Dmitry Lomov (chromium),
Message:
Trying to get one more fix in before the branch point.
Description:
ES6: Make Map/Set constructors support iterable values
Same for WeakMap/WeakSet
https://bugs.ecmascript.org/show_bug.cgi?id=3111
BUG=v8:3508
LOG=Y
Please review this at https://codereview.chromium.org/466003002/
SVN Base: http://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+58, -4 lines):
M src/collection.js
M src/weak_collection.js
M test/mjsunit/es6/collections.js
Index: src/collection.js
diff --git a/src/collection.js b/src/collection.js
index
5e4421eb1072448a186f47eb85f909cb60bdf6bb..20887dd8f7adf5f4ae61c0919c8afbd09469e341
100644
--- a/src/collection.js
+++ b/src/collection.js
@@ -23,7 +23,7 @@ function SetConstructor(iterable) {
var iter, adder;
if (!IS_NULL_OR_UNDEFINED(iterable)) {
- iter = GetIterator(iterable);
+ iter = GetIterator(ToObject(iterable));
adder = this.add;
if (!IS_SPEC_FUNCTION(adder)) {
throw MakeTypeError('property_not_function', ['add', this]);
@@ -147,7 +147,7 @@ function MapConstructor(iterable) {
var iter, adder;
if (!IS_NULL_OR_UNDEFINED(iterable)) {
- iter = GetIterator(iterable);
+ iter = GetIterator(ToObject(iterable));
adder = this.set;
if (!IS_SPEC_FUNCTION(adder)) {
throw MakeTypeError('property_not_function', ['set', this]);
Index: src/weak_collection.js
diff --git a/src/weak_collection.js b/src/weak_collection.js
index
73dd9de6ba9aa5c48d16596ffde2c015e1764673..1160176d66f6c34b8cf8acb59d0841d832055aae
100644
--- a/src/weak_collection.js
+++ b/src/weak_collection.js
@@ -23,7 +23,7 @@ function WeakMapConstructor(iterable) {
var iter, adder;
if (!IS_NULL_OR_UNDEFINED(iterable)) {
- iter = GetIterator(iterable);
+ iter = GetIterator(ToObject(iterable));
adder = this.set;
if (!IS_SPEC_FUNCTION(adder)) {
throw MakeTypeError('property_not_function', ['set', this]);
@@ -139,7 +139,7 @@ function WeakSetConstructor(iterable) {
var iter, adder;
if (!IS_NULL_OR_UNDEFINED(iterable)) {
- iter = GetIterator(iterable);
+ iter = GetIterator(ToObject(iterable));
adder = this.add;
if (!IS_SPEC_FUNCTION(adder)) {
throw MakeTypeError('property_not_function', ['add', this]);
Index: test/mjsunit/es6/collections.js
diff --git a/test/mjsunit/es6/collections.js
b/test/mjsunit/es6/collections.js
index
1e2f232ee814fa002397175d816b3c7c9472561b..57090df51364e6ed03ac77892e476fca0c60cb49
100644
--- a/test/mjsunit/es6/collections.js
+++ b/test/mjsunit/es6/collections.js
@@ -1015,6 +1015,9 @@ function TestSetConstructor(ctor) {
assertThrows(function() {
new ctor({});
}, TypeError);
+ assertThrows(function() {
+ new ctor(true);
+ }, TypeError);
// @@iterator not callable
assertThrows(function() {
@@ -1152,6 +1155,9 @@ function TestMapConstructor(ctor) {
assertThrows(function() {
new ctor({});
}, TypeError);
+ assertThrows(function() {
+ new ctor(true);
+ }, TypeError);
// @@iterator not callable
assertThrows(function() {
@@ -1286,3 +1292,51 @@ function
TestMapConstructorIteratorNotObjectValues(ctor) {
}
TestMapConstructorIteratorNotObjectValues(Map);
TestMapConstructorIteratorNotObjectValues(WeakMap);
+
+
+function TestMapConstructorIterableValue(ctor) {
+ 'use strict';
+ // Strict mode is required to prevent implicit wrapping in the getter.
+ Object.defineProperty(Number.prototype, Symbol.iterator, {
+ get: function() {
+ assertEquals('object', typeof this);
+ return function() {
+ return oneAndTwo.entries();
+ };
+ },
+ configurable: true
+ });
+
+ var map = new ctor(42);
+ assertSize(2, map);
+ assertEquals(1, map.get(k1));
+ assertEquals(2, map.get(k2));
+
+ delete Number.prototype[Symbol.iterator];
+}
+TestMapConstructorIterableValue(Map);
+TestMapConstructorIterableValue(WeakMap);
+
+
+function TestSetConstructorIterableValue(ctor) {
+ 'use strict';
+ // Strict mode is required to prevent implicit wrapping in the getter.
+ Object.defineProperty(Number.prototype, Symbol.iterator, {
+ get: function() {
+ assertEquals('object', typeof this);
+ return function() {
+ return oneAndTwo.keys();
+ };
+ },
+ configurable: true
+ });
+
+ var set = new ctor(42);
+ assertSize(2, set);
+ assertTrue(set.has(k1));
+ assertTrue(set.has(k2));
+
+ delete Number.prototype[Symbol.iterator];
+}
+TestSetConstructorIterableValue(Set);
+TestSetConstructorIterableValue(WeakSet);
--
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