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Qt::mightBeRichText: use QVLA more

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to reduce allocations

Change-Id: I59e131bcdd626f740a73e621b926f4c7dad4738a
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
This commit is contained in:
Anton Kudryavtsev 2023-09-07 22:43:55 +03:00
parent c0e5464d28
commit 7b4c8dd8c2
1 changed files with 4 additions and 4 deletions
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8
src/gui/text/qtextdocument.cpp
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@ -98,10 +98,10 @@ bool Qt::mightBeRichText(const QString& text)
if (open < text.size() && text.at(open) == u'<') { if (open < text.size() && text.at(open) == u'<') {
const int close = text.indexOf(u'>', open); const int close = text.indexOf(u'>', open);
if (close > -1) { if (close > -1) {
QString tag; QVarLengthArray<char16_t> tag;
for (int i = open+1; i < close; ++i) { for (qsizetype i = open + 1; i < close; ++i) {
if (text[i].isDigit() || text[i].isLetter()) if (text[i].isDigit() || text[i].isLetter())
tag += text[i]; tag.append(text[i].toLower().unicode());
else if (!tag.isEmpty() && text[i].isSpace()) else if (!tag.isEmpty() && text[i].isSpace())
break; break;
else if (!tag.isEmpty() && text[i] == u'/' && i + 1 == close) else if (!tag.isEmpty() && text[i] == u'/' && i + 1 == close)
@ -110,7 +110,7 @@ bool Qt::mightBeRichText(const QString& text)
return false; // that's not a tag return false; // that's not a tag
} }
#ifndef QT_NO_TEXTHTMLPARSER #ifndef QT_NO_TEXTHTMLPARSER
return QTextHtmlParser::lookupElement(std::move(tag).toLower()) != -1; return QTextHtmlParser::lookupElement(tag) != -1;
#else #else
return false; return false;
#endif // QT_NO_TEXTHTMLPARSER #endif // QT_NO_TEXTHTMLPARSER