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ClangFormat: remove identical prefix and suffix from replacement text

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To reduce the changes done to the document iterate from the start and
back of the replacement text and check whether the document already contains
the proposed changes.

This also fixes the misplaced snippet part in the if else snippet.

Change-Id: I4519ed101cc03e7c49b3a9b775087361c3fd158d
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
This commit is contained in:
David Schulz
2023-06-30 16:03:52 +02:00
parent bb159da60d
commit 61fc1fd452
1 changed files with 31 additions and 10 deletions
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41
src/plugins/clangformat/clangformatbaseindenter.cpp
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@@ -382,16 +382,37 @@ Utils::Text::Replacements utf16Replacements(const QTextDocument *doc,
continue;
lineColUtf16.column = std::min(lineColUtf16.column, int(lineText.length()));
const int utf16Offset = Utils::Text::positionInText(doc,
lineColUtf16.line,
lineColUtf16.column + 1);
const int utf16Length = QString::fromUtf8(
utf8Buffer.mid(static_cast<int>(replacement.getOffset()),
static_cast<int>(replacement.getLength())))
.size();
convertedReplacements.emplace_back(utf16Offset,
utf16Length,
QString::fromStdString(replacement.getReplacementText().str()));
int utf16Offset = Utils::Text::positionInText(doc,
lineColUtf16.line,
lineColUtf16.column + 1);
int utf16Length = QString::fromUtf8(
utf8Buffer.mid(static_cast<int>(replacement.getOffset()),
static_cast<int>(replacement.getLength())))
.size();
QString replacementText = QString::fromStdString(replacement.getReplacementText().str());
auto sameCharAt = [&](int replacementOffset) {
if (replacementText.size() <= replacementOffset || replacementOffset < 0)
return false;
const QChar docChar = doc->characterAt(utf16Offset + replacementOffset);
const QChar replacementChar = replacementText.at(replacementOffset);
return docChar == replacementChar
|| (docChar == QChar::ParagraphSeparator && replacementChar == '\n');
};
// remove identical prefix from replacement text
while (sameCharAt(0)) {
++utf16Offset;
--utf16Length;
replacementText = replacementText.mid(1);
}
// remove identical suffix from replacement text
while (sameCharAt(utf16Length - 1)) {
--utf16Length;
replacementText.chop(1);
}
if (!replacementText.isEmpty() || utf16Length > 0)
convertedReplacements.emplace_back(utf16Offset, utf16Length, replacementText);
}
return convertedReplacements;