Bug 137731 – Use is<>() / downcast<>() for TransformOperation subclasses

• Component: Platform
• Status: RESOLVED FIXED

[Chris Dumez]

Use is<>() / downcast<>() for TransformOperation subclasses

[Chris Dumez]

Created attachment 239842 [details]
Patch

[Chris Dumez]

Created attachment 239847 [details]
Patch

[Darin Adler]

Comment on attachment 239847 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=239847&action=review

r=me as long as you fix the coordinated graphics build

> Source/WebCore/platform/graphics/transforms/Matrix3DTransformOperation.cpp:37
> -    if (!isSameType(o))
> +    if (!isSameType(other))
>          return false;
> -    const Matrix3DTransformOperation& m = toMatrix3DTransformOperation(o);
> -    return m_matrix == m.m_matrix;
> +    return m_matrix == downcast<Matrix3DTransformOperation>(other).m_matrix;

Almost seems like we’d want to write this with && on a single line.a

> Source/WebKit2/Shared/CoordinatedGraphics/CoordinatedGraphicsArgumentCoders.cpp:187
> -            encoder << toScaleTransformOperation(operation)->x();
> -            encoder << toScaleTransformOperation(operation)->y();
> -            encoder << toScaleTransformOperation(operation)->z();
> +            const auto& scaleOperation = downcast<ScaleTransformOperation>(*operation);
> +            encoder << scaleOperation.x();
> +            encoder << scaleOperation.y();
> +            encoder << scaleOperation.z();
>              break;

I wouldn’t expect this to compile unless you add braces to scope the local variable so that jumping to later cases doesn’t jump across it. I am guessing that’s why EFL failed to build.

> Source/WebKit2/Shared/CoordinatedGraphics/CoordinatedGraphicsArgumentCoders.cpp:193
> +            const auto& translateOperation = downcast<TranslateTransformOperation>(*operation);

Ditto.

> Source/WebKit2/Shared/CoordinatedGraphics/CoordinatedGraphicsArgumentCoders.cpp:202
> +            const auto& rotateOperation = downcast<RotateTransformOperation>(*operation);

Ditto.

> Source/WebKit2/Shared/CoordinatedGraphics/CoordinatedGraphicsArgumentCoders.cpp:211
> +            const auto& skewOperation = downcast<SkewTransformOperation>(*operation);

Ditto.

[Chris Dumez]

Created attachment 239876 [details]
Patch

[Chris Dumez]

Comment on attachment 239876 [details]
Patch

All green \o/

[WebKit Commit Bot]

Comment on attachment 239876 [details]
Patch

Clearing flags on attachment: 239876

Committed r174739: <http://trac.webkit.org/changeset/174739>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.