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highlighter.cpp
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highlighter.cpp
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#include <QtGui>
#include "highlighter.h"
Highlighter::Highlighter(QTextDocument *parent)
: QSyntaxHighlighter(parent)
{
HighlightingRule rule;
nonTermFormat.setFontWeight(QFont::Bold);
nonTermFormat.setForeground(Qt::blue);
//rule.pattern = QRegExp("\\bQ[A-Za-z]+\\b");
rule.pattern = QRegExp("\\b[\\w][\\w\\d]*\\b");
//[\\w][\\w\\d]*
rule.format = nonTermFormat;
highlightingRules.append(rule);
definedNonTermFormat.setFontWeight(QFont::Bold);
definedNonTermFormat.setForeground(Qt::darkMagenta);
rule.pattern = QRegExp("^[\\w][\\w\\d]*\\b");
//[\\w][\\w\\d]*
rule.format = definedNonTermFormat;
highlightingRules.append(rule);
termFormat.setForeground(Qt::darkGreen);
rule.pattern = QRegExp("\"[^\"]*\"");
rule.format = termFormat;
highlightingRules.append(rule);
singleLineCommentFormat.setForeground(Qt::red);
rule.pattern = QRegExp("^//[^\n]*");
rule.format = singleLineCommentFormat;
highlightingRules.append(rule);
}
void Highlighter::highlightBlock(const QString &text)
{
foreach (const HighlightingRule &rule, highlightingRules) {
QRegExp expression(rule.pattern);
int index = expression.indexIn(text);
while (index >= 0) {
int length = expression.matchedLength();
setFormat(index, length, rule.format);
index = expression.indexIn(text, index + length);
}
}
setCurrentBlockState(0);
/*int startIndex = 0;
if (previousBlockState() != 1)
startIndex = commentStartExpression.indexIn(text);
while (startIndex >= 0) {
int endIndex = commentEndExpression.indexIn(text, startIndex);
int commentLength;
if (endIndex == -1) {
setCurrentBlockState(1);
commentLength = text.length() - startIndex;
} else {
commentLength = endIndex - startIndex
+ commentEndExpression.matchedLength();
}
setFormat(startIndex, commentLength, multiLineCommentFormat);
startIndex = commentStartExpression.indexIn(text, startIndex + commentLength);
}*/
}