[Webkit-unassigned] [Bug 127720] New: Support scientific notations for all numbers in CSS

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=127720

           Summary: Support scientific notations for all numbers in CSS
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: krit at webkit.org
                CC: hyatt at apple.com, koivisto at iki.fi,
                    simon.fraser at apple.com, akling at apple.com


CSS 2.2 will support scientific notations for all number values. We support scientific numbers for SVG in the CSSParser. We should do for all values now:

See line 11711 in CSSParser.cpp:

#if ENABLE(SVG)
        // Use SVG parser for numbers on SVG presentation attributes.
        if (m_context.mode == SVGAttributeMode) {
            // We need to take care of units like 'em' or 'ex'.
            SrcCharacterType* character = currentCharacter<SrcCharacterType>();
            if (isASCIIAlphaCaselessEqual(*character, 'e')) {
                ASSERT(character - tokenStart<SrcCharacterType>() > 0);
                ++character;
                if (*character == '-' || *character == '+' || isASCIIDigit(*character)) {
                    ++character;
                    while (isASCIIDigit(*character))
                        ++character;
                    // Use FLOATTOKEN if the string contains exponents.
                    dotSeen = true;
                    currentCharacter<SrcCharacterType>() = character;
                }
            }
            if (!parseSVGNumber(tokenStart<SrcCharacterType>(), character - tokenStart<SrcCharacterType>(), yylval->number))
                break;
        } else
#endif
            yylval->number = charactersToDouble(tokenStart<SrcCharacterType>(), currentCharacter<SrcCharacterType>() - tokenStart<SrcCharacterType>());

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