Cleanup: MIMETypeRegistry functions

• Component: Images
• Status: RESOLVED FIXED

[Said Abou-Hallawa]

Some of the functions in MIMETypeRegistry return HashSet<Sting>. For these functions, we need to do the following:

1. Use NeverDestroyed<> instead of allocating raw pointers with the new operator.
2. Use std::initializer_list to initialize the static HashSet<String> when the list of supported mime types is static list of strings.
3. Use makeNeverDestroyed() to initialize the static HashSet<String> when the list of supported mime types is retrieved from a system call.
3. Replace the functions MIMETypeRegistry::getSupported...() with MIMETypeRegistry::supported...(). The functions whose names are MIMETypeRegistry::supported...() will be responsible of filling and validating their local NeverDestroyed<> and returning the underlaying HashSets.
4. As a preparation for landing 190454, the term UTI will be replaced by ImageSourceType. A new SPI will be added and adding UTI in its name does not seem  appealing.

[Said Abou-Hallawa]

Created attachment 352990 [details]
Patch

[Said Abou-Hallawa]

Created attachment 353000 [details]
Patch

[Said Abou-Hallawa]

Created attachment 353011 [details]
Patch

[Simon Fraser (smfr)]

Comment on attachment 353011 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=353011&action=review

> Source/WebCore/platform/MIMETypeRegistry.h:112
> +    WEBCORE_EXPORT const static HashSet<String, ASCIICaseInsensitiveHash>& supportedImageMIMETypes();
> +    WEBCORE_EXPORT static HashSet<String, ASCIICaseInsensitiveHash>& supportedNonImageMIMETypes();
> +    WEBCORE_EXPORT const static HashSet<String, ASCIICaseInsensitiveHash>& supportedMediaMIMETypes();
> +    WEBCORE_EXPORT const static HashSet<String, ASCIICaseInsensitiveHash>& pdfMIMETypes();
> +    WEBCORE_EXPORT const static HashSet<String, ASCIICaseInsensitiveHash>& unsupportedTextMIMETypes();

I think static const HashSet<> reads better.

Is there a reason supportedNonImageMIMETypes() doesn't return a const HashSet<>?

[Said Abou-Hallawa]

Created attachment 353037 [details]
Patch

[Said Abou-Hallawa]

Comment on attachment 353011 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=353011&action=review

>> Source/WebCore/platform/MIMETypeRegistry.h:112
>> +    WEBCORE_EXPORT const static HashSet<String, ASCIICaseInsensitiveHash>& unsupportedTextMIMETypes();
> 
> I think static const HashSet<> reads better.
> 
> Is there a reason supportedNonImageMIMETypes() doesn't return a const HashSet<>?

Yes.

[WebView _unregisterViewClassAndRepresentationClassForMIMEType]
[WebView _registerViewClass]
[WebView registerViewClass]

need to change it by adding and removing mime types.

[WebKit Commit Bot]

Comment on attachment 353037 [details]
Patch

Clearing flags on attachment: 353037

Committed r237393: <https://trac.webkit.org/changeset/237393>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Radar WebKit Bug Importer]

<rdar://problem/45527724>