aa37e67ef7
We've been requiring C++17 since Qt 6.0, and our qAsConst use finally starts to bother us (QTBUG-99313), so time to port away from it now. Since qAsConst has exactly the same semantics as std::as_const (down to rvalue treatment, constexpr'ness and noexcept'ness), there's really nothing more to it than a global search-and-replace, with manual unstaging of the actual definition and documentation in dist/, src/corelib/doc/ and src/corelib/global/. Task-number: QTBUG-99313 Change-Id: I4c7114444a325ad4e62d0fcbfd347d2bbfb21541 Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
109 lines
4.0 KiB
C++
109 lines
4.0 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "highlighter.h"
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//! [0]
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Highlighter::Highlighter(QTextDocument *parent)
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: QSyntaxHighlighter(parent)
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{
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HighlightingRule rule;
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keywordFormat.setForeground(Qt::darkBlue);
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keywordFormat.setFontWeight(QFont::Bold);
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const QString keywordPatterns[] = {
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QStringLiteral("\\bchar\\b"), QStringLiteral("\\bclass\\b"), QStringLiteral("\\bconst\\b"),
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QStringLiteral("\\bdouble\\b"), QStringLiteral("\\benum\\b"), QStringLiteral("\\bexplicit\\b"),
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QStringLiteral("\\bfriend\\b"), QStringLiteral("\\binline\\b"), QStringLiteral("\\bint\\b"),
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QStringLiteral("\\blong\\b"), QStringLiteral("\\bnamespace\\b"), QStringLiteral("\\boperator\\b"),
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QStringLiteral("\\bprivate\\b"), QStringLiteral("\\bprotected\\b"), QStringLiteral("\\bpublic\\b"),
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QStringLiteral("\\bshort\\b"), QStringLiteral("\\bsignals\\b"), QStringLiteral("\\bsigned\\b"),
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QStringLiteral("\\bslots\\b"), QStringLiteral("\\bstatic\\b"), QStringLiteral("\\bstruct\\b"),
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QStringLiteral("\\btemplate\\b"), QStringLiteral("\\btypedef\\b"), QStringLiteral("\\btypename\\b"),
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QStringLiteral("\\bunion\\b"), QStringLiteral("\\bunsigned\\b"), QStringLiteral("\\bvirtual\\b"),
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QStringLiteral("\\bvoid\\b"), QStringLiteral("\\bvolatile\\b"), QStringLiteral("\\bbool\\b")
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};
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for (const QString &pattern : keywordPatterns) {
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rule.pattern = QRegularExpression(pattern);
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rule.format = keywordFormat;
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highlightingRules.append(rule);
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//! [0] //! [1]
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}
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//! [1]
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//! [2]
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classFormat.setFontWeight(QFont::Bold);
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classFormat.setForeground(Qt::darkMagenta);
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rule.pattern = QRegularExpression(QStringLiteral("\\bQ[A-Za-z]+\\b"));
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rule.format = classFormat;
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highlightingRules.append(rule);
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//! [2]
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//! [3]
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singleLineCommentFormat.setForeground(Qt::red);
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rule.pattern = QRegularExpression(QStringLiteral("//[^\n]*"));
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rule.format = singleLineCommentFormat;
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highlightingRules.append(rule);
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multiLineCommentFormat.setForeground(Qt::red);
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//! [3]
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//! [4]
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quotationFormat.setForeground(Qt::darkGreen);
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rule.pattern = QRegularExpression(QStringLiteral("\".*\""));
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rule.format = quotationFormat;
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highlightingRules.append(rule);
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//! [4]
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//! [5]
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functionFormat.setFontItalic(true);
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functionFormat.setForeground(Qt::blue);
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rule.pattern = QRegularExpression(QStringLiteral("\\b[A-Za-z0-9_]+(?=\\()"));
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rule.format = functionFormat;
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highlightingRules.append(rule);
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//! [5]
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//! [6]
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commentStartExpression = QRegularExpression(QStringLiteral("/\\*"));
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commentEndExpression = QRegularExpression(QStringLiteral("\\*/"));
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}
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//! [6]
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//! [7]
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void Highlighter::highlightBlock(const QString &text)
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{
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for (const HighlightingRule &rule : std::as_const(highlightingRules)) {
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QRegularExpressionMatchIterator matchIterator = rule.pattern.globalMatch(text);
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while (matchIterator.hasNext()) {
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QRegularExpressionMatch match = matchIterator.next();
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setFormat(match.capturedStart(), match.capturedLength(), rule.format);
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}
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}
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//! [7] //! [8]
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setCurrentBlockState(0);
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//! [8]
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//! [9]
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int startIndex = 0;
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if (previousBlockState() != 1)
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startIndex = text.indexOf(commentStartExpression);
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//! [9] //! [10]
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while (startIndex >= 0) {
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//! [10] //! [11]
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QRegularExpressionMatch match = commentEndExpression.match(text, startIndex);
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int endIndex = match.capturedStart();
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int commentLength = 0;
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if (endIndex == -1) {
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setCurrentBlockState(1);
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commentLength = text.length() - startIndex;
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} else {
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commentLength = endIndex - startIndex
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+ match.capturedLength();
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}
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setFormat(startIndex, commentLength, multiLineCommentFormat);
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startIndex = text.indexOf(commentStartExpression, startIndex + commentLength);
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}
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}
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//! [11]
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