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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/174801">174801</a></dd>
<dt>Author</dt> <dd>cdumez@apple.com</dd>
<dt>Date</dt> <dd>2014-10-16 17:35:59 -0700 (Thu, 16 Oct 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>Use is&lt;&gt;() / downcast&lt;&gt;() for ContentData subclasses
https://bugs.webkit.org/show_bug.cgi?id=137768

Reviewed by Andreas Kling.

Use is&lt;&gt;() / downcast&lt;&gt;() for ContentData subclasses.

No new tests, no behavior change.

* css/CSSComputedStyleDeclaration.cpp:
(WebCore::contentToCSSValue):
* css/StyleResolver.cpp:
(WebCore::StyleResolver::loadPendingImages):
* rendering/RenderElement.cpp:
(WebCore::RenderElement::createFor):
* rendering/style/ContentData.h:
(WebCore::operator==):
* rendering/style/RenderStyle.cpp:
(WebCore::RenderStyle::setContent):</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCorecssCSSComputedStyleDeclarationcpp">trunk/Source/WebCore/css/CSSComputedStyleDeclaration.cpp</a></li>
<li><a href="#trunkSourceWebCorecssStyleResolvercpp">trunk/Source/WebCore/css/StyleResolver.cpp</a></li>
<li><a href="#trunkSourceWebCorerenderingRenderElementcpp">trunk/Source/WebCore/rendering/RenderElement.cpp</a></li>
<li><a href="#trunkSourceWebCorerenderingstyleContentDatah">trunk/Source/WebCore/rendering/style/ContentData.h</a></li>
<li><a href="#trunkSourceWebCorerenderingstyleRenderStylecpp">trunk/Source/WebCore/rendering/style/RenderStyle.cpp</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (174800 => 174801)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2014-10-16 23:55:59 UTC (rev 174800)
+++ trunk/Source/WebCore/ChangeLog        2014-10-17 00:35:59 UTC (rev 174801)
</span><span class="lines">@@ -1,3 +1,25 @@
</span><ins>+2014-10-16  Chris Dumez  &lt;cdumez@apple.com&gt;
+
+        Use is&lt;&gt;() / downcast&lt;&gt;() for ContentData subclasses
+        https://bugs.webkit.org/show_bug.cgi?id=137768
+
+        Reviewed by Andreas Kling.
+
+        Use is&lt;&gt;() / downcast&lt;&gt;() for ContentData subclasses.
+
+        No new tests, no behavior change.
+
+        * css/CSSComputedStyleDeclaration.cpp:
+        (WebCore::contentToCSSValue):
+        * css/StyleResolver.cpp:
+        (WebCore::StyleResolver::loadPendingImages):
+        * rendering/RenderElement.cpp:
+        (WebCore::RenderElement::createFor):
+        * rendering/style/ContentData.h:
+        (WebCore::operator==):
+        * rendering/style/RenderStyle.cpp:
+        (WebCore::RenderStyle::setContent):
+
</ins><span class="cx"> 2014-10-16  Commit Queue  &lt;commit-queue@webkit.org&gt;
</span><span class="cx"> 
</span><span class="cx">         Unreviewed, rolling out r174744.
</span></span></pre></div>
<a id="trunkSourceWebCorecssCSSComputedStyleDeclarationcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/css/CSSComputedStyleDeclaration.cpp (174800 => 174801)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/css/CSSComputedStyleDeclaration.cpp        2014-10-16 23:55:59 UTC (rev 174800)
+++ trunk/Source/WebCore/css/CSSComputedStyleDeclaration.cpp        2014-10-17 00:35:59 UTC (rev 174801)
</span><span class="lines">@@ -1462,12 +1462,12 @@
</span><span class="cx"> {
</span><span class="cx">     auto list = CSSValueList::createSpaceSeparated();
</span><span class="cx">     for (const ContentData* contentData = style-&gt;contentData(); contentData; contentData = contentData-&gt;next()) {
</span><del>-        if (contentData-&gt;isCounter())
-            list.get().append(cssValuePool().createValue(toCounterContentData(contentData)-&gt;counter().identifier(), CSSPrimitiveValue::CSS_COUNTER_NAME));
-        else if (contentData-&gt;isImage())
-            list.get().append(*toImageContentData(contentData)-&gt;image().cssValue());
-        else if (contentData-&gt;isText())
-            list.get().append(cssValuePool().createValue(toTextContentData(contentData)-&gt;text(), CSSPrimitiveValue::CSS_STRING));
</del><ins>+        if (is&lt;CounterContentData&gt;(*contentData))
+            list.get().append(cssValuePool().createValue(downcast&lt;CounterContentData&gt;(*contentData).counter().identifier(), CSSPrimitiveValue::CSS_COUNTER_NAME));
+        else if (is&lt;ImageContentData&gt;(*contentData))
+            list.get().append(*downcast&lt;ImageContentData&gt;(*contentData).image().cssValue());
+        else if (is&lt;TextContentData&gt;(*contentData))
+            list.get().append(cssValuePool().createValue(downcast&lt;TextContentData&gt;(*contentData).text(), CSSPrimitiveValue::CSS_STRING));
</ins><span class="cx">     }
</span><span class="cx">     if (style-&gt;hasFlowFrom())
</span><span class="cx">         list.get().append(cssValuePool().createValue(style-&gt;regionThread(), CSSPrimitiveValue::CSS_STRING));
</span></span></pre></div>
<a id="trunkSourceWebCorecssStyleResolvercpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/css/StyleResolver.cpp (174800 => 174801)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/css/StyleResolver.cpp        2014-10-16 23:55:59 UTC (rev 174800)
+++ trunk/Source/WebCore/css/StyleResolver.cpp        2014-10-17 00:35:59 UTC (rev 174801)
</span><span class="lines">@@ -3713,12 +3713,12 @@
</span><span class="cx">         }
</span><span class="cx">         case CSSPropertyContent: {
</span><span class="cx">             for (ContentData* contentData = const_cast&lt;ContentData*&gt;(m_state.style()-&gt;contentData()); contentData; contentData = contentData-&gt;next()) {
</span><del>-                if (contentData-&gt;isImage()) {
-                    auto&amp; styleImage = toImageContentData(contentData)-&gt;image();
</del><ins>+                if (is&lt;ImageContentData&gt;(*contentData)) {
+                    auto&amp; styleImage = downcast&lt;ImageContentData&gt;(*contentData).image();
</ins><span class="cx">                     if (styleImage.isPendingImage()) {
</span><span class="cx">                         RefPtr&lt;StyleImage&gt; loadedImage = loadPendingImage(toStylePendingImage(styleImage));
</span><span class="cx">                         if (loadedImage)
</span><del>-                            toImageContentData(contentData)-&gt;setImage(loadedImage.release());
</del><ins>+                            downcast&lt;ImageContentData&gt;(*contentData).setImage(loadedImage.release());
</ins><span class="cx">                     }
</span><span class="cx">                 }
</span><span class="cx">             }
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingRenderElementcpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/RenderElement.cpp (174800 => 174801)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/RenderElement.cpp        2014-10-16 23:55:59 UTC (rev 174800)
+++ trunk/Source/WebCore/rendering/RenderElement.cpp        2014-10-17 00:35:59 UTC (rev 174801)
</span><span class="lines">@@ -139,8 +139,8 @@
</span><span class="cx">     // Works only if we have exactly one piece of content and it's a URL.
</span><span class="cx">     // Otherwise acts as if we didn't support this feature.
</span><span class="cx">     const ContentData* contentData = style.get().contentData();
</span><del>-    if (contentData &amp;&amp; !contentData-&gt;next() &amp;&amp; contentData-&gt;isImage() &amp;&amp; !element.isPseudoElement()) {
-        auto&amp; styleImage = toImageContentData(contentData)-&gt;image();
</del><ins>+    if (contentData &amp;&amp; !contentData-&gt;next() &amp;&amp; is&lt;ImageContentData&gt;(*contentData) &amp;&amp; !element.isPseudoElement()) {
+        auto&amp; styleImage = downcast&lt;ImageContentData&gt;(*contentData).image();
</ins><span class="cx">         auto image = createRenderer&lt;RenderImage&gt;(element, WTF::move(style), const_cast&lt;StyleImage*&gt;(&amp;styleImage));
</span><span class="cx">         image-&gt;setIsGeneratedContent();
</span><span class="cx">         return WTF::move(image);
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingstyleContentDatah"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/style/ContentData.h (174800 => 174801)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/style/ContentData.h        2014-10-16 23:55:59 UTC (rev 174800)
+++ trunk/Source/WebCore/rendering/style/ContentData.h        2014-10-17 00:35:59 UTC (rev 174801)
</span><span class="lines">@@ -28,6 +28,7 @@
</span><span class="cx"> #include &quot;CounterContent.h&quot;
</span><span class="cx"> #include &quot;StyleImage.h&quot;
</span><span class="cx"> #include &quot;RenderPtr.h&quot;
</span><ins>+#include &lt;wtf/TypeCasts.h&gt;
</ins><span class="cx"> 
</span><span class="cx"> namespace WebCore {
</span><span class="cx"> 
</span><span class="lines">@@ -77,9 +78,6 @@
</span><span class="cx">     Type m_type;
</span><span class="cx"> };
</span><span class="cx"> 
</span><del>-#define CONTENT_DATA_TYPE_CASTS(ToClassName, FromClassName, ContentDataName) \
-    TYPE_CASTS_BASE(ToClassName, FromClassName, resource, resource-&gt;is##ContentDataName(), resource.is##ContentDataName())
-
</del><span class="cx"> class ImageContentData final : public ContentData {
</span><span class="cx"> public:
</span><span class="cx">     explicit ImageContentData(PassRefPtr&lt;StyleImage&gt; image)
</span><span class="lines">@@ -107,8 +105,6 @@
</span><span class="cx">     RefPtr&lt;StyleImage&gt; m_image;
</span><span class="cx"> };
</span><span class="cx"> 
</span><del>-CONTENT_DATA_TYPE_CASTS(ImageContentData, ContentData, Image)
-
</del><span class="cx"> inline bool operator==(const ImageContentData&amp; a, const ImageContentData&amp; b)
</span><span class="cx"> {
</span><span class="cx">     return a.image() == b.image();
</span><span class="lines">@@ -138,8 +134,6 @@
</span><span class="cx">     String m_text;
</span><span class="cx"> };
</span><span class="cx"> 
</span><del>-CONTENT_DATA_TYPE_CASTS(TextContentData, ContentData, Text)
-
</del><span class="cx"> inline bool operator==(const TextContentData&amp; a, const TextContentData&amp; b)
</span><span class="cx"> {
</span><span class="cx">     return a.text() == b.text();
</span><span class="lines">@@ -178,8 +172,6 @@
</span><span class="cx">     std::unique_ptr&lt;CounterContent&gt; m_counter;
</span><span class="cx"> };
</span><span class="cx"> 
</span><del>-CONTENT_DATA_TYPE_CASTS(CounterContentData, ContentData, Counter)
-
</del><span class="cx"> inline bool operator==(const CounterContentData&amp; a, const CounterContentData&amp; b)
</span><span class="cx"> {
</span><span class="cx">     return a.counter() == b.counter();
</span><span class="lines">@@ -209,8 +201,6 @@
</span><span class="cx">     QuoteType m_quote;
</span><span class="cx"> };
</span><span class="cx"> 
</span><del>-CONTENT_DATA_TYPE_CASTS(QuoteContentData, ContentData, Quote)
-
</del><span class="cx"> inline bool operator==(const QuoteContentData&amp; a, const QuoteContentData&amp; b)
</span><span class="cx"> {
</span><span class="cx">     return a.quote() == b.quote();
</span><span class="lines">@@ -228,13 +218,13 @@
</span><span class="cx"> 
</span><span class="cx">     switch (a.type()) {
</span><span class="cx">     case ContentData::CounterDataType:
</span><del>-        return toCounterContentData(a) == toCounterContentData(b);
</del><ins>+        return downcast&lt;CounterContentData&gt;(a) == downcast&lt;CounterContentData&gt;(b);
</ins><span class="cx">     case ContentData::ImageDataType:
</span><del>-        return toImageContentData(a) == toImageContentData(b);
</del><ins>+        return downcast&lt;ImageContentData&gt;(a) == downcast&lt;ImageContentData&gt;(b);
</ins><span class="cx">     case ContentData::QuoteDataType:
</span><del>-        return toQuoteContentData(a) == toQuoteContentData(b);
</del><ins>+        return downcast&lt;QuoteContentData&gt;(a) == downcast&lt;QuoteContentData&gt;(b);
</ins><span class="cx">     case ContentData::TextDataType:
</span><del>-        return toTextContentData(a) == toTextContentData(b);
</del><ins>+        return downcast&lt;TextContentData&gt;(a) == downcast&lt;TextContentData&gt;(b);
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     ASSERT_NOT_REACHED();
</span><span class="lines">@@ -248,4 +238,14 @@
</span><span class="cx"> 
</span><span class="cx"> } // namespace WebCore
</span><span class="cx"> 
</span><ins>+#define SPECIALIZE_TYPE_TRAITS_CONTENT_DATA(ToClassName, ContentDataName) \
+SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ToClassName) \
+    static bool isType(const WebCore::ContentData&amp; contentData) { return contentData.is##ContentDataName(); } \
+SPECIALIZE_TYPE_TRAITS_END()
+
+SPECIALIZE_TYPE_TRAITS_CONTENT_DATA(ImageContentData, Image)
+SPECIALIZE_TYPE_TRAITS_CONTENT_DATA(TextContentData, Text)
+SPECIALIZE_TYPE_TRAITS_CONTENT_DATA(CounterContentData, Counter)
+SPECIALIZE_TYPE_TRAITS_CONTENT_DATA(QuoteContentData, Quote)
+
</ins><span class="cx"> #endif // ContentData_h
</span></span></pre></div>
<a id="trunkSourceWebCorerenderingstyleRenderStylecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/rendering/style/RenderStyle.cpp (174800 => 174801)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/rendering/style/RenderStyle.cpp        2014-10-16 23:55:59 UTC (rev 174800)
+++ trunk/Source/WebCore/rendering/style/RenderStyle.cpp        2014-10-17 00:35:59 UTC (rev 174801)
</span><span class="lines">@@ -904,9 +904,9 @@
</span><span class="cx"> 
</span><span class="cx">         if (lastContent) {
</span><span class="cx">             // We attempt to merge with the last ContentData if possible.
</span><del>-            if (lastContent-&gt;isText()) {
-                TextContentData* textContent = toTextContentData(lastContent);
-                textContent-&gt;setText(textContent-&gt;text() + string);
</del><ins>+            if (is&lt;TextContentData&gt;(*lastContent)) {
+                TextContentData&amp; textContent = downcast&lt;TextContentData&gt;(*lastContent);
+                textContent.setText(textContent.text() + string);
</ins><span class="cx">             } else
</span><span class="cx">                 lastContent-&gt;setNext(std::make_unique&lt;TextContentData&gt;(string));
</span><span class="cx"> 
</span></span></pre>
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