Differential D2016 Diff 6087 src/backends/python/pythonhighlighter.cpp

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src/backends/python/pythonhighlighter.cpp

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22#include "pythonkeywords.h" 22​#include "pythonkeywords.h"
23 23​
24#include <QTextEdit> 24​#include <QTextEdit>
25#include <QDebug> 25​#include <QDebug>
26 26​
27PythonHighlighter::PythonHighlighter(QObject* parent) : Cantor::DefaultHighlighter(parent) 27​PythonHighlighter::PythonHighlighter(QObject* parent) : Cantor::DefaultHighlighter(parent)
28{ 28​{
29 qDebug() << "PythonHighlighter construtor"; 29​ qDebug() << "PythonHighlighter construtor";
30 addRule(QRegExp(QLatin1String("\\b[A-Za-z0-9_]+(?=\\()")), functionFormat()); 30​ addRule(QRegExp(QLatin1String("\\b\\w+(?=\\()")), functionFormat());
31 31​
32 //Code highlighting the different keywords 32​ //Code highlighting the different keywords
33 addKeywords(PythonKeywords::instance()->keywords()); 33​ addKeywords(PythonKeywords::instance()->keywords());
34 ​
35 addRule(QLatin1String("FIXME"), commentFormat()); ​
36 addRule(QLatin1String("TODO"), commentFormat()); ​
37 ​
38 addFunctions(PythonKeywords::instance()->functions()); 34​ addFunctions(PythonKeywords::instance()->functions());
39 addVariables(PythonKeywords::instance()->variables()); 35​ addVariables(PythonKeywords::instance()->variables());
40 ​
41 addRule(QRegExp(QLatin1String("\".*\"")), stringFormat()); ​
42 addRule(QRegExp(QLatin1String("'.*'")), stringFormat()); ​
43 addRule(QRegExp(QLatin1String("#[^\n]*")), commentFormat()); ​
44 ​
45 commentStartExpression = QRegExp(QLatin1String("'''[^\n]*")); ​
46 commentEndExpression = QRegExp(QLatin1String("'''")); ​
47} 36​}
48 37​
49PythonHighlighter::~PythonHighlighter() 38​PythonHighlighter::~PythonHighlighter()
50{ 39​{
51} 40​}
52 41​
53void PythonHighlighter::highlightBlock(const QString& text) 42​void PythonHighlighter::highlightBlock(const QString &text)
54{ 43​{
55 qDebug() << "PythonHighlighter::highlightBlock"; ​
56 qDebug() << "text: " << text; ​
57 ​
58 if (skipHighlighting(text)){ 44​ if (skipHighlighting(text)) {
59 qDebug() << "skipHighlighting(" << text << " ) " << "== true"; ​
60 return; 45​ return;
61 } 46​ }
62 47​
63 //Do some backend independent highlighting (brackets etc.) 48​ // Do some backend independent highlighting (brackets etc.)
64 DefaultHighlighter::highlightBlock(text); 49​ DefaultHighlighter::highlightBlock(text);
65 50​
66 setCurrentBlockState(0); 51​ const int IN_MULTILINE_COMMENT = 1;
67 52​ const int IN_SMALL_QUOTE_STRING = 2;
68 int startIndex = 0; 53​ const int IN_SINGLE_QUOTE_STRING = 4;
69 if (previousBlockState() != 1) 54​ const int IN_TRIPLE_QUOTE_STRING = 8;
70 startIndex = commentStartExpression.indexIn(text); 55​
71 56​ QRegExp multiLineCommentStartEnd(QLatin1String("'''"));
72 while (startIndex >= 0) { 57​ QRegExp smallQuoteStartEnd(QLatin1String("'"));
73 58​ QRegExp singleQuoteStringStartEnd(QLatin1String("\""));
74 int endIndex = commentEndExpression.indexIn(text, startIndex); 59​ QRegExp tripleQuoteStringStartEnd(QLatin1String("\"\"\""));
75 int commentLength; 60​ QRegExp singleLineCommentStart(QLatin1String("#"));
76 if (endIndex == -1) { 61​
62​ int state = previousBlockState();
63​ if (state == -1) {
64​ state = 0;
65​ }
66​
67​ QList<int> flags = {
68​ IN_TRIPLE_QUOTE_STRING,
69​ IN_SINGLE_QUOTE_STRING,
70​ IN_SMALL_QUOTE_STRING,
71​ IN_MULTILINE_COMMENT
72​ };
73​ QList<QRegExp> regexps = {
74​ tripleQuoteStringStartEnd,
75​ singleQuoteStringStartEnd,
76​ smallQuoteStartEnd,
77​ multiLineCommentStartEnd
78​ };
79​ QList<QTextCharFormat> formats = {
80​ stringFormat(),
81​ stringFormat(),
82​ stringFormat(),
83​ commentFormat()
84​ };
85​
86​ int pos = 0;
87​ while (pos < text.length()) {
88​ // Trying to close current environments
89​ bool triggered = false;
90​ for (int i = 0; i < flags.size() and not triggered; i++) {
91​ int flag = flags[i];
92​ QRegExp &regexp = regexps[i];
93​ QTextCharFormat &format = formats[i];
94​ if (state & flag) {
95​ int new_pos = regexp.indexIn(text, pos);
96​ int length;
97​ if (new_pos == -1) {
98​ length = text.length() - pos;
99​ } else {
100​ length = new_pos - pos + regexp.matchedLength();
101​ state -= flag;
102​ }
103​ setFormat(pos, length, format);
104​ pos = pos + length;
105​ triggered = true;
106​ }
107​ }
108​ if (triggered) {
109​ continue;
110​ }
111​
112​ QRegExp *minRegexp = nullptr;
113​ int minPos = INT_MAX;
114​ int minIdx = -1;
115​ for (int i = 0; i < regexps.size(); i++) {
116​ QRegExp &regexp = regexps[i];
117​ int newPos = regexp.indexIn(text, pos);
118​ if (newPos != -1) {
119​ minPos = qMin(minPos, newPos);
120​ minRegexp = &regexp;
121​ minIdx = i;
122​ }
123​ }
77 124​
78 setCurrentBlockState(1); 125​ int singleLineCommentStartPos =
79 commentLength = text.length() - startIndex; 126​ singleLineCommentStart.indexIn(text, pos);
127​
128​ if (singleLineCommentStartPos != -1
129​ and singleLineCommentStartPos < minPos) {
130​ setFormat(pos, text.length() - pos, commentFormat());
131​ break;
132​ } else if (minRegexp) {
133​ state += flags[minIdx];
134​ pos = minPos + minRegexp->matchedLength();
135​ setFormat(minPos, minRegexp->matchedLength(), formats[minIdx]);
80 } else { 136​ } else {
81 commentLength = endIndex - startIndex 137​ break;
82 + commentEndExpression.matchedLength(); ​
83 } 138​ }
84 setFormat(startIndex, commentLength, commentFormat()); ​
85 startIndex = commentStartExpression.indexIn(text, startIndex + commentLength); ​
86 } 139​ }
140​
141​ setCurrentBlockState(state);
87} 142​}
88 143​
89void PythonHighlighter::updateHighlight() 144​void PythonHighlighter::updateHighlight()
90{ 145​{
91 qDebug(); 146​ qDebug();
92 147​
93 addVariables(PythonKeywords::instance()->variables()); 148​ addVariables(PythonKeywords::instance()->variables());
94 rehighlight(); 149​ rehighlight();
95} 150​}
96 ​
97QString PythonHighlighter::nonSeparatingCharacters() const ​
98{ ​
99 qDebug() << "PythonHighlighter::nonSeparatingCharacters() function"; ​
100 return QLatin1String("[%]"); ​
101} ​