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lammps/tools/lammps-gui/highlighter.cpp

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/* ----------------------------------------------------------------------
LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
https://www.lammps.org/, Sandia National Laboratories
LAMMPS development team: developers@lammps.org
Copyright (2003) Sandia Corporation. Under the terms of Contract
DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
certain rights in this software. This software is distributed under
the GNU General Public License.
See the README file in the top-level LAMMPS directory.
------------------------------------------------------------------------- */
#include "highlighter.h"
Highlighter::Highlighter(QTextDocument *parent) : QSyntaxHighlighter(parent)
{
HighlightingRule rule;
keywordFormat.setForeground(Qt::darkBlue);
keywordFormat.setFontWeight(QFont::Bold);
const QString keywordPatterns[] = {
QStringLiteral("\\bchar\\b"), QStringLiteral("\\bclass\\b"),
QStringLiteral("\\bconst\\b"), QStringLiteral("\\bdouble\\b"),
QStringLiteral("\\benum\\b"), QStringLiteral("\\bexplicit\\b"),
QStringLiteral("\\bfriend\\b"), QStringLiteral("\\binline\\b"),
QStringLiteral("\\bint\\b"), QStringLiteral("\\blong\\b"),
QStringLiteral("\\bnamespace\\b"), QStringLiteral("\\boperator\\b"),
QStringLiteral("\\bprivate\\b"), QStringLiteral("\\bprotected\\b"),
QStringLiteral("\\bpublic\\b"), QStringLiteral("\\bshort\\b"),
QStringLiteral("\\bsignals\\b"), QStringLiteral("\\bsigned\\b"),
QStringLiteral("\\bslots\\b"), QStringLiteral("\\bstatic\\b"),
QStringLiteral("\\bstruct\\b"), QStringLiteral("\\btemplate\\b"),
QStringLiteral("\\btypedef\\b"), QStringLiteral("\\btypename\\b"),
QStringLiteral("\\bunion\\b"), QStringLiteral("\\bunsigned\\b"),
QStringLiteral("\\bvirtual\\b"), QStringLiteral("\\bvoid\\b"),
QStringLiteral("\\bvolatile\\b"), QStringLiteral("\\bbool\\b")};
for (const QString &pattern : keywordPatterns) {
rule.pattern = QRegularExpression(pattern);
rule.format = keywordFormat;
highlightingRules.append(rule);
}
classFormat.setFontWeight(QFont::Bold);
classFormat.setForeground(Qt::darkMagenta);
rule.pattern = QRegularExpression(QStringLiteral("\\bQ[A-Za-z]+\\b"));
rule.format = classFormat;
highlightingRules.append(rule);
quotationFormat.setForeground(Qt::darkGreen);
rule.pattern = QRegularExpression(QStringLiteral("\".*\""));
rule.format = quotationFormat;
highlightingRules.append(rule);
functionFormat.setFontItalic(true);
functionFormat.setForeground(Qt::blue);
rule.pattern = QRegularExpression(QStringLiteral("\\b[A-Za-z0-9_]+(?=\\()"));
rule.format = functionFormat;
highlightingRules.append(rule);
singleLineCommentFormat.setForeground(Qt::red);
rule.pattern = QRegularExpression(QStringLiteral("//[^\n]*"));
rule.format = singleLineCommentFormat;
highlightingRules.append(rule);
multiLineCommentFormat.setForeground(Qt::red);
commentStartExpression = QRegularExpression(QStringLiteral("/\\*"));
commentEndExpression = QRegularExpression(QStringLiteral("\\*/"));
}
void Highlighter::highlightBlock(const QString &text)
{
for (const HighlightingRule &rule : qAsConst(highlightingRules)) {
QRegularExpressionMatchIterator matchIterator = rule.pattern.globalMatch(text);
while (matchIterator.hasNext()) {
QRegularExpressionMatch match = matchIterator.next();
setFormat(match.capturedStart(), match.capturedLength(), rule.format);
}
}
setCurrentBlockState(0);
int startIndex = 0;
if (previousBlockState() != 1) startIndex = text.indexOf(commentStartExpression);
while (startIndex >= 0) {
QRegularExpressionMatch match = commentEndExpression.match(text, startIndex);
int endIndex = match.capturedStart();
int commentLength = 0;
if (endIndex == -1) {
setCurrentBlockState(1);
commentLength = text.length() - startIndex;
} else {
commentLength = endIndex - startIndex + match.capturedLength();
}
setFormat(startIndex, commentLength, multiLineCommentFormat);
startIndex = text.indexOf(commentStartExpression, startIndex + commentLength);
}
}
// Local Variables:
// c-basic-offset: 4
// End: