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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/210918">210918</a></dd>
<dt>Author</dt> <dd>achristensen@apple.com</dd>
<dt>Date</dt> <dd>2017-01-19 00:21:37 -0800 (Thu, 19 Jan 2017)</dd>
</dl>

<h3>Log Message</h3>
<pre>[WebIDL] Records should preserve javascript object order
https://bugs.webkit.org/show_bug.cgi?id=167189

Patch by Sam Weinig &lt;sam@webkit.org&gt; on 2017-01-18
Reviewed by Alex Christensen.

Source/WebCore:

Instead of modeling IDL records as HashMaps, use a Vector
of KeyValuePairs, to all preserving the iteration order.

* Modules/webdatabase/SQLResultSetRowList.cpp:
(WebCore::SQLResultSetRowList::item):
* Modules/webdatabase/SQLResultSetRowList.h:
Return a Vector rather than a HashMap.

* bindings/IDLTypes.h:
Change underlying type to be a Vector&lt;KeyValuePair&lt;K, V&gt;&gt;.

* bindings/js/JSDOMConvert.h:
Update conversion for new implementation type. For conversion
to JSValue, allow any type that can has an iterator of keyValuePairs.
 
* testing/TypeConversions.h:
(WebCore::TypeConversions::testLongRecord):
(WebCore::TypeConversions::setTestLongRecord):
(WebCore::TypeConversions::testNodeRecord):
(WebCore::TypeConversions::setTestNodeRecord):
(WebCore::TypeConversions::testSequenceRecord):
(WebCore::TypeConversions::setTestSequenceRecord):
* testing/TypeConversions.idl:
Update test IDL to use functions, since the spec mandates that
records can't be used with attributes.

LayoutTests:

* js/dom/webidl-type-mapping-expected.txt:
* js/dom/webidl-type-mapping.html:
Update test to reflect changes to TypeConversions.idl</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkLayoutTestsjsdomwebidltypemappingexpectedtxt">trunk/LayoutTests/js/dom/webidl-type-mapping-expected.txt</a></li>
<li><a href="#trunkLayoutTestsjsdomwebidltypemappinghtml">trunk/LayoutTests/js/dom/webidl-type-mapping.html</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreModuleswebdatabaseSQLResultSetRowListcpp">trunk/Source/WebCore/Modules/webdatabase/SQLResultSetRowList.cpp</a></li>
<li><a href="#trunkSourceWebCoreModuleswebdatabaseSQLResultSetRowListh">trunk/Source/WebCore/Modules/webdatabase/SQLResultSetRowList.h</a></li>
<li><a href="#trunkSourceWebCorebindingsIDLTypesh">trunk/Source/WebCore/bindings/IDLTypes.h</a></li>
<li><a href="#trunkSourceWebCorebindingsjsJSDOMConverth">trunk/Source/WebCore/bindings/js/JSDOMConvert.h</a></li>
<li><a href="#trunkSourceWebCorebindingsscriptsCodeGeneratorJSpm">trunk/Source/WebCore/bindings/scripts/CodeGeneratorJS.pm</a></li>
<li><a href="#trunkSourceWebCoretestingTypeConversionsh">trunk/Source/WebCore/testing/TypeConversions.h</a></li>
<li><a href="#trunkSourceWebCoretestingTypeConversionsidl">trunk/Source/WebCore/testing/TypeConversions.idl</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (210917 => 210918)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog        2017-01-19 08:08:38 UTC (rev 210917)
+++ trunk/LayoutTests/ChangeLog        2017-01-19 08:21:37 UTC (rev 210918)
</span><span class="lines">@@ -1,3 +1,14 @@
</span><ins>+2017-01-18  Sam Weinig  &lt;sam@webkit.org&gt;
+
+        [WebIDL] Records should preserve javascript object order
+        https://bugs.webkit.org/show_bug.cgi?id=167189
+
+        Reviewed by Alex Christensen.
+
+        * js/dom/webidl-type-mapping-expected.txt:
+        * js/dom/webidl-type-mapping.html:
+        Update test to reflect changes to TypeConversions.idl
+
</ins><span class="cx"> 2017-01-18  Yoav Weiss  &lt;yoav@yoav.ws&gt;
</span><span class="cx"> 
</span><span class="cx">         Add Link header support for preload.
</span></span></pre></div>
<a id="trunkLayoutTestsjsdomwebidltypemappingexpectedtxt"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/js/dom/webidl-type-mapping-expected.txt (210917 => 210918)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/js/dom/webidl-type-mapping-expected.txt        2017-01-19 08:08:38 UTC (rev 210917)
+++ trunk/LayoutTests/js/dom/webidl-type-mapping-expected.txt        2017-01-19 08:21:37 UTC (rev 210918)
</span><span class="lines">@@ -1127,69 +1127,69 @@
</span><span class="cx"> PASS converter.typeConversionsDictionaryUnionType is 'dictionary'
</span><span class="cx"> 
</span><span class="cx"> Testing record conversion
</span><del>-converter.testLongRecord = { key: 1, key2: 2 }
-PASS converter.testLongRecord is an instance of Object
-PASS converter.testLongRecord.hasOwnProperty('key') is true
-PASS 'key' in converter.testLongRecord is true
-PASS converter.testLongRecord['key'] is 1
-PASS converter.testLongRecord.hasOwnProperty('key2') is true
-PASS 'key2' in converter.testLongRecord is true
-PASS converter.testLongRecord['key2'] is 2
-converter.testLongRecord = undefined
-PASS converter.testLongRecord is an instance of Object
-converter.testLongRecord = null
-PASS converter.testLongRecord is an instance of Object
-PASS converter.testLongRecord = 1 threw exception TypeError: Type error.
-PASS converter.testLongRecord = { key: { valueOf:function() { throw new Error(); } } } threw exception Error.
-var o = { otherKey: 2 }; Object.defineProperty(o, 'key', { enumerable: false, value: 1 }); converter.testLongRecord = o;
-PASS converter.testLongRecord.hasOwnProperty('key') is false
-PASS converter.testLongRecord.hasOwnProperty('otherKey') is true
-PASS converter.testLongRecord['otherKey'] is 2
-var o = { otherKey: 2 }; Object.defineProperty(o, 'key', { get: function() { return 1; }, enumerable: true }); converter.testLongRecord = o;
-PASS converter.testLongRecord.hasOwnProperty('key') is true
-PASS converter.testLongRecord['key'] is 1
-PASS converter.testLongRecord.hasOwnProperty('otherKey') is true
-PASS converter.testLongRecord['otherKey'] is 2
-PASS var o = { otherKey: 2 }; Object.defineProperty(o, 'key', { get: function() { throw new Error();; }, enumerable: true }); converter.testLongRecord = o; threw exception Error.
-converter.testNodeRecord = { key: document, key2: document.documentElement }
-PASS converter.testNodeRecord.hasOwnProperty('key') is true
-PASS 'key' in converter.testNodeRecord is true
-PASS converter.testNodeRecord['key'] is document
-PASS converter.testNodeRecord.hasOwnProperty('key2') is true
-PASS 'key2' in converter.testNodeRecord is true
-PASS converter.testNodeRecord['key2'] is document.documentElement
-PASS converter.testNodeRecord = { key: 'hello' } threw exception TypeError: Type error.
-converter.testLongRecord = {'í €': 1 }
-PASS converter.testLongRecord['í €'] is 1
-converter.testNodeRecord = {'í €': document }
-PASS converter.testNodeRecord['�'] is document
-converter.testLongRecord = {'í°€': 1 }
-PASS converter.testLongRecord['í°€'] is 1
-converter.testNodeRecord = {'í°€': document }
-PASS converter.testNodeRecord['�'] is document
-converter.testLongRecord = {'í €': 1 }
-PASS converter.testLongRecord['í €\0'] is 1
-converter.testNodeRecord = {'í €': document }
-PASS converter.testNodeRecord['�\0'] is document
-converter.testLongRecord = {'í°€': 1 }
-PASS converter.testLongRecord['í°€\0'] is 1
-converter.testNodeRecord = {'í°€': document }
-PASS converter.testNodeRecord['�\0'] is document
-converter.testLongRecord = {'í°€í €': 1 }
-PASS converter.testLongRecord['í°€í €'] is 1
-converter.testNodeRecord = {'í°€í €': document }
-PASS converter.testNodeRecord['��'] is document
-converter.testLongRecord = {'𝄞': 1 }
-PASS converter.testLongRecord['𝄞'] is 1
-converter.testNodeRecord = {'𝄞': document }
-PASS converter.testNodeRecord['𝄞'] is document
-converter.testSequenceRecord = { key: ['value', 'other value'] }
-PASS converter.testSequenceRecord.hasOwnProperty('key') is true
-PASS 'key' in converter.testSequenceRecord is true
-PASS converter.testSequenceRecord['key'] is ['value', 'other value']
-PASS converter.testSequenceRecord = { 'Ā': ['value'] } threw exception TypeError: Type error.
-converter.testSequenceRecord = { 'ÿ': ['value'] }
-PASS converter.testSequenceRecord['ÿ'] is ['value']
</del><ins>+converter.setTestLongRecord({ key: 1, key2: 2 })
+PASS converter.testLongRecord() is an instance of Object
+PASS converter.testLongRecord().hasOwnProperty('key') is true
+PASS 'key' in converter.testLongRecord() is true
+PASS converter.testLongRecord()['key'] is 1
+PASS converter.testLongRecord().hasOwnProperty('key2') is true
+PASS 'key2' in converter.testLongRecord() is true
+PASS converter.testLongRecord()['key2'] is 2
+converter.setTestLongRecord(undefined)
+PASS converter.testLongRecord() is an instance of Object
+converter.setTestLongRecord(null)
+PASS converter.testLongRecord() is an instance of Object
+PASS converter.setTestLongRecord(1) threw exception TypeError: Type error.
+PASS converter.setTestLongRecord({ key: { valueOf:function() { throw new Error(); } } }) threw exception Error.
+var o = { otherKey: 2 }; Object.defineProperty(o, 'key', { enumerable: false, value: 1 }); converter.setTestLongRecord(o);
+PASS converter.testLongRecord().hasOwnProperty('key') is false
+PASS converter.testLongRecord().hasOwnProperty('otherKey') is true
+PASS converter.testLongRecord()['otherKey'] is 2
+var o = { otherKey: 2 }; Object.defineProperty(o, 'key', { get: function() { return 1; }, enumerable: true }); converter.setTestLongRecord(o);
+PASS converter.testLongRecord().hasOwnProperty('key') is true
+PASS converter.testLongRecord()['key'] is 1
+PASS converter.testLongRecord().hasOwnProperty('otherKey') is true
+PASS converter.testLongRecord()['otherKey'] is 2
+PASS var o = { otherKey: 2 }; Object.defineProperty(o, 'key', { get: function() { throw new Error(); }, enumerable: true }); converter.setTestLongRecord(o); threw exception Error.
+converter.setTestNodeRecord({ key: document, key2: document.documentElement })
+PASS converter.testNodeRecord().hasOwnProperty('key') is true
+PASS 'key' in converter.testNodeRecord() is true
+PASS converter.testNodeRecord()['key'] is document
+PASS converter.testNodeRecord().hasOwnProperty('key2') is true
+PASS 'key2' in converter.testNodeRecord() is true
+PASS converter.testNodeRecord()['key2'] is document.documentElement
+PASS converter.setTestNodeRecord({ key: 'hello' }) threw exception TypeError: Type error.
+converter.setTestLongRecord({'í €': 1 })
+PASS converter.testLongRecord()['í €'] is 1
+converter.setTestNodeRecord({'í €': document })
+PASS converter.testNodeRecord()['�'] is document
+converter.setTestLongRecord({'í°€': 1 })
+PASS converter.testLongRecord()['í°€'] is 1
+converter.setTestNodeRecord({'í°€': document })
+PASS converter.testNodeRecord()['�'] is document
+converter.setTestLongRecord({'í €': 1 })
+PASS converter.testLongRecord()['í €\0'] is 1
+converter.setTestNodeRecord({'í €': document })
+PASS converter.testNodeRecord()['�\0'] is document
+converter.setTestLongRecord({'í°€': 1 })
+PASS converter.testLongRecord()['í°€\0'] is 1
+converter.setTestNodeRecord({'í°€': document })
+PASS converter.testNodeRecord()['�\0'] is document
+converter.setTestLongRecord({'í°€í €': 1 })
+PASS converter.testLongRecord()['í°€í €'] is 1
+converter.setTestNodeRecord({'í°€í €': document })
+PASS converter.testNodeRecord()['��'] is document
+converter.setTestLongRecord({'𝄞': 1 })
+PASS converter.testLongRecord()['𝄞'] is 1
+converter.setTestNodeRecord({'𝄞': document })
+PASS converter.testNodeRecord()['𝄞'] is document
+converter.setTestSequenceRecord({ key: ['value', 'other value'] })
+PASS converter.testSequenceRecord().hasOwnProperty('key') is true
+PASS 'key' in converter.testSequenceRecord() is true
+PASS converter.testSequenceRecord()['key'] is ['value', 'other value']
+PASS converter.setTestSequenceRecord({ 'Ā': ['value'] }) threw exception TypeError: Type error.
+converter.setTestSequenceRecord({ 'ÿ': ['value'] })
+PASS converter.testSequenceRecord()['ÿ'] is ['value']
</ins><span class="cx"> PASS successfullyParsed is true
</span><span class="cx"> 
</span><span class="cx"> TEST COMPLETE
</span></span></pre></div>
<a id="trunkLayoutTestsjsdomwebidltypemappinghtml"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/js/dom/webidl-type-mapping.html (210917 => 210918)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/js/dom/webidl-type-mapping.html        2017-01-19 08:08:38 UTC (rev 210917)
+++ trunk/LayoutTests/js/dom/webidl-type-mapping.html        2017-01-19 08:21:37 UTC (rev 210918)
</span><span class="lines">@@ -659,39 +659,39 @@
</span><span class="cx"> // testNodeRecord is a record&lt;USVString, Node&gt; attribute
</span><span class="cx"> // testSequenceRecord is a record&lt;ByteString, sequence&lt;DOMString&gt;&gt; attribute
</span><span class="cx"> 
</span><del>-evalAndLog(&quot;converter.testLongRecord = { key: 1, key2: 2 }&quot;);
-shouldBeType(&quot;converter.testLongRecord&quot;, &quot;Object&quot;);
-shouldBeTrue(&quot;converter.testLongRecord.hasOwnProperty('key')&quot;);
-shouldBeTrue(&quot;'key' in converter.testLongRecord&quot;);
-shouldBe(&quot;converter.testLongRecord['key']&quot;, &quot;1&quot;);
-shouldBeTrue(&quot;converter.testLongRecord.hasOwnProperty('key2')&quot;);
-shouldBeTrue(&quot;'key2' in converter.testLongRecord&quot;);
-shouldBe(&quot;converter.testLongRecord['key2']&quot;, &quot;2&quot;);
-evalAndLog(&quot;converter.testLongRecord = undefined&quot;);
-shouldBeType(&quot;converter.testLongRecord&quot;, &quot;Object&quot;);
-evalAndLog(&quot;converter.testLongRecord = null&quot;);
-shouldBeType(&quot;converter.testLongRecord&quot;, &quot;Object&quot;);
-shouldThrow(&quot;converter.testLongRecord = 1&quot;);
-shouldThrow(&quot;converter.testLongRecord = { key: { valueOf:function() { throw new Error(); } } }&quot;);
-evalAndLog(&quot;var o = { otherKey: 2 }; Object.defineProperty(o, 'key', { enumerable: false, value: 1 }); converter.testLongRecord = o;&quot;);
-shouldBeFalse(&quot;converter.testLongRecord.hasOwnProperty('key')&quot;);
-shouldBeTrue(&quot;converter.testLongRecord.hasOwnProperty('otherKey')&quot;);
-shouldBe(&quot;converter.testLongRecord['otherKey']&quot;, &quot;2&quot;);
-evalAndLog(&quot;var o = { otherKey: 2 }; Object.defineProperty(o, 'key', { get: function() { return 1; }, enumerable: true }); converter.testLongRecord = o;&quot;);
-shouldBeTrue(&quot;converter.testLongRecord.hasOwnProperty('key')&quot;);
-shouldBe(&quot;converter.testLongRecord['key']&quot;, &quot;1&quot;);
-shouldBeTrue(&quot;converter.testLongRecord.hasOwnProperty('otherKey')&quot;);
-shouldBe(&quot;converter.testLongRecord['otherKey']&quot;, &quot;2&quot;);
-shouldThrow(&quot;var o = { otherKey: 2 }; Object.defineProperty(o, 'key', { get: function() { throw new Error();; }, enumerable: true }); converter.testLongRecord = o;&quot;);
</del><ins>+evalAndLog(&quot;converter.setTestLongRecord({ key: 1, key2: 2 })&quot;);
+shouldBeType(&quot;converter.testLongRecord()&quot;, &quot;Object&quot;);
+shouldBeTrue(&quot;converter.testLongRecord().hasOwnProperty('key')&quot;);
+shouldBeTrue(&quot;'key' in converter.testLongRecord()&quot;);
+shouldBe(&quot;converter.testLongRecord()['key']&quot;, &quot;1&quot;);
+shouldBeTrue(&quot;converter.testLongRecord().hasOwnProperty('key2')&quot;);
+shouldBeTrue(&quot;'key2' in converter.testLongRecord()&quot;);
+shouldBe(&quot;converter.testLongRecord()['key2']&quot;, &quot;2&quot;);
+evalAndLog(&quot;converter.setTestLongRecord(undefined)&quot;);
+shouldBeType(&quot;converter.testLongRecord()&quot;, &quot;Object&quot;);
+evalAndLog(&quot;converter.setTestLongRecord(null)&quot;);
+shouldBeType(&quot;converter.testLongRecord()&quot;, &quot;Object&quot;);
+shouldThrow(&quot;converter.setTestLongRecord(1)&quot;);
+shouldThrow(&quot;converter.setTestLongRecord({ key: { valueOf:function() { throw new Error(); } } })&quot;);
+evalAndLog(&quot;var o = { otherKey: 2 }; Object.defineProperty(o, 'key', { enumerable: false, value: 1 }); converter.setTestLongRecord(o);&quot;);
+shouldBeFalse(&quot;converter.testLongRecord().hasOwnProperty('key')&quot;);
+shouldBeTrue(&quot;converter.testLongRecord().hasOwnProperty('otherKey')&quot;);
+shouldBe(&quot;converter.testLongRecord()['otherKey']&quot;, &quot;2&quot;);
+evalAndLog(&quot;var o = { otherKey: 2 }; Object.defineProperty(o, 'key', { get: function() { return 1; }, enumerable: true }); converter.setTestLongRecord(o);&quot;);
+shouldBeTrue(&quot;converter.testLongRecord().hasOwnProperty('key')&quot;);
+shouldBe(&quot;converter.testLongRecord()['key']&quot;, &quot;1&quot;);
+shouldBeTrue(&quot;converter.testLongRecord().hasOwnProperty('otherKey')&quot;);
+shouldBe(&quot;converter.testLongRecord()['otherKey']&quot;, &quot;2&quot;);
+shouldThrow(&quot;var o = { otherKey: 2 }; Object.defineProperty(o, 'key', { get: function() { throw new Error(); }, enumerable: true }); converter.setTestLongRecord(o);&quot;);
</ins><span class="cx"> 
</span><del>-evalAndLog(&quot;converter.testNodeRecord = { key: document, key2: document.documentElement }&quot;);
-shouldBeTrue(&quot;converter.testNodeRecord.hasOwnProperty('key')&quot;);
-shouldBeTrue(&quot;'key' in converter.testNodeRecord&quot;);
-shouldBe(&quot;converter.testNodeRecord['key']&quot;, &quot;document&quot;);
-shouldBeTrue(&quot;converter.testNodeRecord.hasOwnProperty('key2')&quot;);
-shouldBeTrue(&quot;'key2' in converter.testNodeRecord&quot;);
-shouldBe(&quot;converter.testNodeRecord['key2']&quot;, &quot;document.documentElement&quot;);
-shouldThrow(&quot;converter.testNodeRecord = { key: 'hello' }&quot;);
</del><ins>+evalAndLog(&quot;converter.setTestNodeRecord({ key: document, key2: document.documentElement })&quot;);
+shouldBeTrue(&quot;converter.testNodeRecord().hasOwnProperty('key')&quot;);
+shouldBeTrue(&quot;'key' in converter.testNodeRecord()&quot;);
+shouldBe(&quot;converter.testNodeRecord()['key']&quot;, &quot;document&quot;);
+shouldBeTrue(&quot;converter.testNodeRecord().hasOwnProperty('key2')&quot;);
+shouldBeTrue(&quot;'key2' in converter.testNodeRecord()&quot;);
+shouldBe(&quot;converter.testNodeRecord()['key2']&quot;, &quot;document.documentElement&quot;);
+shouldThrow(&quot;converter.setTestNodeRecord({ key: 'hello' })&quot;);
</ins><span class="cx"> 
</span><span class="cx"> [{input: &quot;\uD800&quot;, expected: &quot;\uFFFD&quot;},
</span><span class="cx">  {input: &quot;\uDC00&quot;, expected: &quot;\uFFFD&quot;},
</span><span class="lines">@@ -700,19 +700,19 @@
</span><span class="cx">  {input: &quot;\uDC00\uD800&quot;, expected: &quot;\uFFFD\uFFFD&quot;},
</span><span class="cx">  {input: &quot;\uD834\uDD1E&quot;, expected: &quot;\uD834\uDD1E&quot;},
</span><span class="cx"> ].forEach(function(test) {
</span><del>-    evalAndLog(&quot;converter.testLongRecord = {'&quot; + test.input + &quot;': 1 }&quot;);
-    shouldBe(&quot;converter.testLongRecord['&quot; + test.input + &quot;']&quot;, &quot;1&quot;);
-    evalAndLog(&quot;converter.testNodeRecord = {'&quot; + test.input + &quot;': document }&quot;);
-    shouldBe(&quot;converter.testNodeRecord['&quot; + test.expected + &quot;']&quot;, &quot;document&quot;);
</del><ins>+    evalAndLog(&quot;converter.setTestLongRecord({'&quot; + test.input + &quot;': 1 })&quot;);
+    shouldBe(&quot;converter.testLongRecord()['&quot; + test.input + &quot;']&quot;, &quot;1&quot;);
+    evalAndLog(&quot;converter.setTestNodeRecord({'&quot; + test.input + &quot;': document })&quot;);
+    shouldBe(&quot;converter.testNodeRecord()['&quot; + test.expected + &quot;']&quot;, &quot;document&quot;);
</ins><span class="cx"> });
</span><span class="cx"> 
</span><del>-evalAndLog(&quot;converter.testSequenceRecord = { key: ['value', 'other value'] }&quot;);
-shouldBeTrue(&quot;converter.testSequenceRecord.hasOwnProperty('key')&quot;);
-shouldBeTrue(&quot;'key' in converter.testSequenceRecord&quot;);
-shouldBe(&quot;converter.testSequenceRecord['key']&quot;, &quot;['value', 'other value']&quot;);
-shouldThrow(&quot;converter.testSequenceRecord = { '\u0100': ['value'] }&quot;);
-evalAndLog(&quot;converter.testSequenceRecord = { '\u00FF': ['value'] }&quot;);
-shouldBe(&quot;converter.testSequenceRecord['\u00FF']&quot;, &quot;['value']&quot;);
</del><ins>+evalAndLog(&quot;converter.setTestSequenceRecord({ key: ['value', 'other value'] })&quot;);
+shouldBeTrue(&quot;converter.testSequenceRecord().hasOwnProperty('key')&quot;);
+shouldBeTrue(&quot;'key' in converter.testSequenceRecord()&quot;);
+shouldBe(&quot;converter.testSequenceRecord()['key']&quot;, &quot;['value', 'other value']&quot;);
+shouldThrow(&quot;converter.setTestSequenceRecord({ '\u0100': ['value'] })&quot;);
+evalAndLog(&quot;converter.setTestSequenceRecord({ '\u00FF': ['value'] })&quot;);
+shouldBe(&quot;converter.testSequenceRecord()['\u00FF']&quot;, &quot;['value']&quot;);
</ins><span class="cx"> 
</span><span class="cx"> &lt;/script&gt;
</span><span class="cx"> &lt;script src=&quot;../../resources/js-test-post.js&quot;&gt;&lt;/script&gt;
</span></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (210917 => 210918)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2017-01-19 08:08:38 UTC (rev 210917)
+++ trunk/Source/WebCore/ChangeLog        2017-01-19 08:21:37 UTC (rev 210918)
</span><span class="lines">@@ -1,3 +1,36 @@
</span><ins>+2017-01-18  Sam Weinig  &lt;sam@webkit.org&gt;
+
+        [WebIDL] Records should preserve javascript object order
+        https://bugs.webkit.org/show_bug.cgi?id=167189
+
+        Reviewed by Alex Christensen.
+
+        Instead of modeling IDL records as HashMaps, use a Vector
+        of KeyValuePairs, to all preserving the iteration order.
+
+        * Modules/webdatabase/SQLResultSetRowList.cpp:
+        (WebCore::SQLResultSetRowList::item):
+        * Modules/webdatabase/SQLResultSetRowList.h:
+        Return a Vector rather than a HashMap.
+
+        * bindings/IDLTypes.h:
+        Change underlying type to be a Vector&lt;KeyValuePair&lt;K, V&gt;&gt;.
+
+        * bindings/js/JSDOMConvert.h:
+        Update conversion for new implementation type. For conversion
+        to JSValue, allow any type that can has an iterator of keyValuePairs.

+        * testing/TypeConversions.h:
+        (WebCore::TypeConversions::testLongRecord):
+        (WebCore::TypeConversions::setTestLongRecord):
+        (WebCore::TypeConversions::testNodeRecord):
+        (WebCore::TypeConversions::setTestNodeRecord):
+        (WebCore::TypeConversions::testSequenceRecord):
+        (WebCore::TypeConversions::setTestSequenceRecord):
+        * testing/TypeConversions.idl:
+        Update test IDL to use functions, since the spec mandates that
+        records can't be used with attributes.
+
</ins><span class="cx"> 2017-01-18  Alex Christensen  &lt;achristensen@webkit.org&gt;
</span><span class="cx"> 
</span><span class="cx">         Implement URLSearchParams's sort()
</span></span></pre></div>
<a id="trunkSourceWebCoreModuleswebdatabaseSQLResultSetRowListcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/Modules/webdatabase/SQLResultSetRowList.cpp (210917 => 210918)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/Modules/webdatabase/SQLResultSetRowList.cpp        2017-01-19 08:08:38 UTC (rev 210917)
+++ trunk/Source/WebCore/Modules/webdatabase/SQLResultSetRowList.cpp        2017-01-19 08:21:37 UTC (rev 210918)
</span><span class="lines">@@ -43,17 +43,17 @@
</span><span class="cx">     return m_result.size() / m_columns.size();
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-ExceptionOr&lt;HashMap&lt;String, SQLValue&gt;&gt; SQLResultSetRowList::item(unsigned index) const
</del><ins>+ExceptionOr&lt;Vector&lt;WTF::KeyValuePair&lt;String, SQLValue&gt;&gt;&gt; SQLResultSetRowList::item(unsigned index) const
</ins><span class="cx"> {
</span><span class="cx">     if (index &gt;= length())
</span><span class="cx">         return Exception { INDEX_SIZE_ERR };
</span><span class="cx"> 
</span><del>-    HashMap&lt;String, SQLValue&gt; result;
</del><ins>+    Vector&lt;WTF::KeyValuePair&lt;String, SQLValue&gt;&gt; result;
</ins><span class="cx"> 
</span><span class="cx">     unsigned numberOfColumns = m_columns.size();
</span><span class="cx">     unsigned valuesIndex = index * numberOfColumns;
</span><span class="cx">     for (unsigned i = 0; i &lt; numberOfColumns; i++)
</span><del>-        result.set(m_columns[i], m_result[valuesIndex + i]);
</del><ins>+        result.append({ m_columns[i], m_result[valuesIndex + i] });
</ins><span class="cx"> 
</span><span class="cx">     return WTFMove(result);
</span><span class="cx"> }
</span></span></pre></div>
<a id="trunkSourceWebCoreModuleswebdatabaseSQLResultSetRowListh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/Modules/webdatabase/SQLResultSetRowList.h (210917 => 210918)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/Modules/webdatabase/SQLResultSetRowList.h        2017-01-19 08:08:38 UTC (rev 210917)
+++ trunk/Source/WebCore/Modules/webdatabase/SQLResultSetRowList.h        2017-01-19 08:21:37 UTC (rev 210918)
</span><span class="lines">@@ -30,8 +30,7 @@
</span><span class="cx"> 
</span><span class="cx"> #include &quot;ExceptionOr.h&quot;
</span><span class="cx"> #include &quot;SQLValue.h&quot;
</span><del>-#include &lt;wtf/HashMap.h&gt;
-#include &lt;wtf/text/StringHash.h&gt;
</del><ins>+#include &lt;wtf/HashTraits.h&gt;
</ins><span class="cx"> 
</span><span class="cx"> namespace WebCore {
</span><span class="cx"> 
</span><span class="lines">@@ -46,7 +45,7 @@
</span><span class="cx">     void addResult(const SQLValue&amp; result) { m_result.append(result); }
</span><span class="cx"> 
</span><span class="cx">     unsigned length() const;
</span><del>-    ExceptionOr&lt;HashMap&lt;String, SQLValue&gt;&gt; item(unsigned index) const;
</del><ins>+    ExceptionOr&lt;Vector&lt;WTF::KeyValuePair&lt;String, SQLValue&gt;&gt;&gt; item(unsigned index) const;
</ins><span class="cx"> 
</span><span class="cx"> private:
</span><span class="cx">     SQLResultSetRowList() { }
</span></span></pre></div>
<a id="trunkSourceWebCorebindingsIDLTypesh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/bindings/IDLTypes.h (210917 => 210918)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/bindings/IDLTypes.h        2017-01-19 08:08:38 UTC (rev 210917)
+++ trunk/Source/WebCore/bindings/IDLTypes.h        2017-01-19 08:21:37 UTC (rev 210918)
</span><span class="lines">@@ -156,11 +156,11 @@
</span><span class="cx">     using ParameterType = const Vector&lt;typename T::ImplementationType&gt;&amp;;
</span><span class="cx"> };
</span><span class="cx"> 
</span><del>-template&lt;typename K, typename V&gt; struct IDLRecord : IDLType&lt;HashMap&lt;typename K::ImplementationType, typename V::ImplementationType&gt;&gt; {
</del><ins>+template&lt;typename K, typename V&gt; struct IDLRecord : IDLType&lt;Vector&lt;WTF::KeyValuePair&lt;typename K::ImplementationType, typename V::ImplementationType&gt;&gt;&gt; {
</ins><span class="cx">     using KeyType = K;
</span><span class="cx">     using ValueType = V;
</span><span class="cx"> 
</span><del>-    using ParameterType = const HashMap&lt;typename K::ImplementationType, typename V::ImplementationType&gt;&amp;;
</del><ins>+    using ParameterType = const Vector&lt;WTF::KeyValuePair&lt;typename K::ImplementationType, typename V::ImplementationType&gt;&gt;&amp;;
</ins><span class="cx"> };
</span><span class="cx"> 
</span><span class="cx"> template&lt;typename T&gt; struct IDLPromise : IDLType&lt;DOMPromise&lt;T&gt;&gt; {
</span></span></pre></div>
<a id="trunkSourceWebCorebindingsjsJSDOMConverth"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/bindings/js/JSDOMConvert.h (210917 => 210918)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/bindings/js/JSDOMConvert.h        2017-01-19 08:08:38 UTC (rev 210917)
+++ trunk/Source/WebCore/bindings/js/JSDOMConvert.h        2017-01-19 08:21:37 UTC (rev 210918)
</span><span class="lines">@@ -1271,8 +1271,10 @@
</span><span class="cx">                 
</span><span class="cx">                 // 4. If typedKey is already a key in result, set its value to typedValue.
</span><span class="cx">                 // Note: This can happen when O is a proxy object.
</span><ins>+                // FIXME: Handle this case.
+                
</ins><span class="cx">                 // 5. Otherwise, append to result a mapping (typedKey, typedValue).
</span><del>-                result.set(typedKey, typedValue);
</del><ins>+                result.append({ typedKey, typedValue });
</ins><span class="cx">             }
</span><span class="cx">         }
</span><span class="cx"> 
</span><span class="lines">@@ -1285,8 +1287,8 @@
</span><span class="cx">     static constexpr bool needsState = true;
</span><span class="cx">     static constexpr bool needsGlobalObject = true;
</span><span class="cx"> 
</span><del>-    template&lt;typename ValueType&gt;
-    static JSC::JSValue convert(JSC::ExecState&amp; state, JSDOMGlobalObject&amp; globalObject, const HashMap&lt;String, ValueType&gt;&amp; map)
</del><ins>+    template&lt;typename MapType&gt;
+    static JSC::JSValue convert(JSC::ExecState&amp; state, JSDOMGlobalObject&amp; globalObject, const MapType&amp; map)
</ins><span class="cx">     {
</span><span class="cx">         auto&amp; vm = state.vm();
</span><span class="cx">     
</span></span></pre></div>
<a id="trunkSourceWebCorebindingsscriptsCodeGeneratorJSpm"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/bindings/scripts/CodeGeneratorJS.pm (210917 => 210918)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/bindings/scripts/CodeGeneratorJS.pm        2017-01-19 08:08:38 UTC (rev 210917)
+++ trunk/Source/WebCore/bindings/scripts/CodeGeneratorJS.pm        2017-01-19 08:21:37 UTC (rev 210918)
</span><span class="lines">@@ -297,7 +297,7 @@
</span><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     if ($codeGenerator-&gt;IsRecordType($type)) {
</span><del>-        AddToIncludes(&quot;&lt;wtf/HashMap.h&gt;&quot;, $includesRef, $conditional);
</del><ins>+        AddToIncludes(&quot;&lt;wtf/Vector.h&gt;&quot;, $includesRef, $conditional);
</ins><span class="cx">         AddToIncludesForIDLType(@{$type-&gt;subtypes}[0], $includesRef, $conditional);
</span><span class="cx">         AddToIncludesForIDLType(@{$type-&gt;subtypes}[1], $includesRef, $conditional);
</span><span class="cx">         return;
</span><span class="lines">@@ -5327,7 +5327,7 @@
</span><span class="cx">     return GetEnumerationClassName($type, $interface) if $codeGenerator-&gt;IsEnumType($type);
</span><span class="cx">     return GetDictionaryClassName($type, $interface) if $codeGenerator-&gt;IsDictionaryType($type);
</span><span class="cx">     return &quot;Vector&lt;&quot; . GetNativeInnerType(@{$type-&gt;subtypes}[0], $interface) . &quot;&gt;&quot; if $codeGenerator-&gt;IsSequenceOrFrozenArrayType($type);
</span><del>-    return &quot;HashMap&lt;&quot; . GetNativeInnerType(@{$type-&gt;subtypes}[0], $interface) . &quot;, &quot; . GetNativeInnerType(@{$type-&gt;subtypes}[1], $interface) . &quot;&gt;&quot; if $codeGenerator-&gt;IsRecordType($type);
</del><ins>+    return &quot;Vector&lt;WTF::KeyValuePair&lt;&quot; . GetNativeInnerType(@{$type-&gt;subtypes}[0], $interface) . &quot;, &quot; . GetNativeInnerType(@{$type-&gt;subtypes}[1], $interface) . &quot;&gt;&gt;&quot; if $codeGenerator-&gt;IsRecordType($type);
</ins><span class="cx"> 
</span><span class="cx">     return &quot;RefPtr&lt;${typeName}&gt;&quot; if $codeGenerator-&gt;IsTypedArrayType($type) and $typeName ne &quot;ArrayBuffer&quot;;
</span><span class="cx">     return &quot;${typeName}*&quot;;
</span><span class="lines">@@ -5344,7 +5344,7 @@
</span><span class="cx">     return GetEnumerationClassName($innerType, $interface) if $codeGenerator-&gt;IsEnumType($innerType);
</span><span class="cx">     return GetDictionaryClassName($innerType, $interface) if $codeGenerator-&gt;IsDictionaryType($innerType);
</span><span class="cx">     return &quot;Vector&lt;&quot; . GetNativeInnerType(@{$innerType-&gt;subtypes}[0], $interface) . &quot;&gt;&quot; if $codeGenerator-&gt;IsSequenceOrFrozenArrayType($innerType);
</span><del>-    return &quot;HashMap&lt;&quot; . GetNativeInnerType(@{$innerType-&gt;subtypes}[0], $interface) . &quot;, &quot; . GetNativeInnerType(@{$innerType-&gt;subtypes}[1], $interface) . &quot;&gt;&quot; if $codeGenerator-&gt;IsRecordType($innerType);
</del><ins>+    return &quot;Vector&lt;WTF::KeyValuePair&lt;&quot; . GetNativeInnerType(@{$innerType-&gt;subtypes}[0], $interface) . &quot;, &quot; . GetNativeInnerType(@{$innerType-&gt;subtypes}[1], $interface) . &quot;&gt;&gt;&quot; if $codeGenerator-&gt;IsRecordType($innerType);
</ins><span class="cx">     return &quot;RefPtr&lt;$innerTypeName&gt;&quot;;
</span><span class="cx"> }
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkSourceWebCoretestingTypeConversionsh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/testing/TypeConversions.h (210917 => 210918)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/testing/TypeConversions.h        2017-01-19 08:08:38 UTC (rev 210917)
+++ trunk/Source/WebCore/testing/TypeConversions.h        2017-01-19 08:21:37 UTC (rev 210918)
</span><span class="lines">@@ -102,12 +102,12 @@
</span><span class="cx">     const String&amp; testByteString() const { return m_byteString; }
</span><span class="cx">     void setTestByteString(const String&amp; byteString) { m_byteString = byteString; }
</span><span class="cx"> 
</span><del>-    const HashMap&lt;String, int&gt;&amp; testLongRecord() const { return m_longRecord; }
-    void setTestLongRecord(const HashMap&lt;String, int&gt;&amp; value) { m_longRecord = value; }
-    const HashMap&lt;String, RefPtr&lt;Node&gt;&gt;&amp; testNodeRecord() const { return m_nodeRecord; }
-    void setTestNodeRecord(const HashMap&lt;String, RefPtr&lt;Node&gt;&gt;&amp; value) { m_nodeRecord = value; }
-    const HashMap&lt;String, Vector&lt;String&gt;&gt;&amp; testSequenceRecord() const { return m_sequenceRecord; }
-    void setTestSequenceRecord(const HashMap&lt;String, Vector&lt;String&gt;&gt;&amp; value) { m_sequenceRecord = value; }
</del><ins>+    const Vector&lt;WTF::KeyValuePair&lt;String, int&gt;&gt;&amp; testLongRecord() const { return m_longRecord; }
+    void setTestLongRecord(const Vector&lt;WTF::KeyValuePair&lt;String, int&gt;&gt;&amp; value) { m_longRecord = value; }
+    const Vector&lt;WTF::KeyValuePair&lt;String, RefPtr&lt;Node&gt;&gt;&gt;&amp; testNodeRecord() const { return m_nodeRecord; }
+    void setTestNodeRecord(const Vector&lt;WTF::KeyValuePair&lt;String, RefPtr&lt;Node&gt;&gt;&gt;&amp; value) { m_nodeRecord = value; }
+    const Vector&lt;WTF::KeyValuePair&lt;String, Vector&lt;String&gt;&gt;&gt;&amp; testSequenceRecord() const { return m_sequenceRecord; }
+    void setTestSequenceRecord(const Vector&lt;WTF::KeyValuePair&lt;String, Vector&lt;String&gt;&gt;&gt;&amp; value) { m_sequenceRecord = value; }
</ins><span class="cx"> 
</span><span class="cx">     using TestUnion = Variant&lt;String, int, bool, RefPtr&lt;Node&gt;, Vector&lt;int&gt;&gt;;
</span><span class="cx">     const TestUnion&amp; testUnion() const { return m_union; }
</span><span class="lines">@@ -150,9 +150,9 @@
</span><span class="cx">     String m_string;
</span><span class="cx">     String m_usvstring;
</span><span class="cx">     String m_byteString;
</span><del>-    HashMap&lt;String, int&gt; m_longRecord;
-    HashMap&lt;String, RefPtr&lt;Node&gt;&gt; m_nodeRecord;
-    HashMap&lt;String, Vector&lt;String&gt;&gt; m_sequenceRecord;
</del><ins>+    Vector&lt;WTF::KeyValuePair&lt;String, int&gt;&gt; m_longRecord;
+    Vector&lt;WTF::KeyValuePair&lt;String, RefPtr&lt;Node&gt;&gt;&gt; m_nodeRecord;
+    Vector&lt;WTF::KeyValuePair&lt;String, Vector&lt;String&gt;&gt;&gt; m_sequenceRecord;
</ins><span class="cx">     TestUnion m_union;
</span><span class="cx">     
</span><span class="cx">     int m_typeConversionsDictionaryLongValue { 0 };
</span></span></pre></div>
<a id="trunkSourceWebCoretestingTypeConversionsidl"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/testing/TypeConversions.idl (210917 => 210918)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/testing/TypeConversions.idl        2017-01-19 08:08:38 UTC (rev 210917)
+++ trunk/Source/WebCore/testing/TypeConversions.idl        2017-01-19 08:21:37 UTC (rev 210918)
</span><span class="lines">@@ -54,10 +54,15 @@
</span><span class="cx">     attribute ByteString testByteString;
</span><span class="cx">     attribute USVString testUSVString;
</span><span class="cx"> 
</span><del>-    attribute record&lt;DOMString, long&gt; testLongRecord;
-    attribute record&lt;USVString, Node&gt; testNodeRecord;
-    attribute record&lt;ByteString, sequence&lt;DOMString&gt;&gt; testSequenceRecord;
</del><ins>+    void setTestLongRecord(record&lt;DOMString, long&gt; record);
+    record&lt;DOMString, long&gt; testLongRecord();
</ins><span class="cx"> 
</span><ins>+    void setTestNodeRecord(record&lt;USVString, Node&gt; record);
+    record&lt;USVString, Node&gt; testNodeRecord();
+
+    void setTestSequenceRecord(record&lt;ByteString, sequence&lt;DOMString&gt;&gt; record);
+    record&lt;ByteString, sequence&lt;DOMString&gt;&gt; testSequenceRecord();
+
</ins><span class="cx">     attribute (DOMString or long or boolean or Node or sequence&lt;long&gt;) testUnion;
</span><span class="cx">     
</span><span class="cx">     void setTypeConversionsDictionary(TypeConversionsDictionary d);
</span></span></pre>
</div>
</div>

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