Bug 156929 – [Cocoa] Guarantee FontPlatformData's m_cgFont is never nullptr

• Component: New Bugs
• Status: RESOLVED FIXED

[Myles C. Maxfield]

[Cocoa] Guarantee FontPlatformData's m_cgFont is never nullptr

[Myles C. Maxfield]

Created attachment 277097 [details]
Patch

[Myles C. Maxfield]

Created attachment 277098 [details]
WIP

[WebKit Commit Bot]

Attachment 277098 [details] did not pass style-queue:


ERROR: Source/WebCore/ChangeLog:8:  You should remove the 'No new tests' and either add and list tests, or explain why no new tests were possible.  [changelog/nonewtests] [5]
Total errors found: 1 in 8 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Myles C. Maxfield]

Created attachment 277118 [details]
Patch

[Myles C. Maxfield]

I should delete FontPlatformData::setFont()

[Chris Dumez]

Does not build?

[Myles C. Maxfield]

Created attachment 277126 [details]
Patch

[Darin Adler]

Comment on attachment 277126 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=277126&action=review

r=me if you fix the Windows build

> Source/WebCore/platform/graphics/FontPlatformData.cpp:60
>      m_cgFont = cgFont;

Could we construct this instead of initializing it?

> Source/WebCore/platform/graphics/FontPlatformData.h:-221
> -#if USE(CG)
> -    void setFallbackCGFont();
> -#endif

Broke the Windows build, which is still trying to call this function.

> Source/WebCore/platform/graphics/mac/ComplexTextControllerCoreText.mm:265
> -            ASSERT(CFGetTypeID(runCTFont) == CTFontGetTypeID());
> +            ASSERT(runCTFont && CFGetTypeID(runCTFont) == CTFontGetTypeID());

If you want to add an assertion about this not being null, then it should be a separate assertion; we don’t use &&.

But also, CFGetTypeID is already a function that crashes when passed null; I don’t think we really need any change here.

> Source/WebCore/platform/graphics/mac/FontCustomPlatformData.cpp:44
> +    ASSERT(font);

Is this really guaranteed?

> Source/WebCore/platform/mac/DragImageMac.mm:336
> +    if (drawURLString && urlFont) {

Doesn’t seem like we need this.

> Source/WebCore/platform/mac/DragImageMac.mm:343
> +    if (labelFont) {

Doesn’t seem like we need this.

> Source/WebKit/mac/Misc/WebStringTruncator.mm:65
> +    if (!menuFont.get())
> +        return nil;

I don’t think we need this. No chance of getting nil for the menu font. Probably don’t need the assertion either, since fontFromNSFont asserts.

> Source/WebKit/mac/Misc/WebStringTruncator.mm:73
> +    if (!font)
> +        return nil;

Returning @"" or returning the string without doing truncation would be better than returning nil.

> Source/WebKit/mac/Misc/WebStringTruncator.mm:81
> +    if (!font)
> +        return nil;

Returning @"" or returning the string without doing truncation would be better than returning nil.

[Myles C. Maxfield]

Created attachment 277304 [details]
Patch for committing

[Myles C. Maxfield]

Committed r200070: <http://trac.webkit.org/changeset/200070>