Differential D2507 Diff 6086 src/backends/julia/juliahighlighter.cpp

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src/backends/julia/juliahighlighter.cpp

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41 // Do some backend independent highlighting (brackets etc.) 41​ // Do some backend independent highlighting (brackets etc.)
42 DefaultHighlighter::highlightBlock(text); 42​ DefaultHighlighter::highlightBlock(text);
43 43​
44​ // Now we are about to make corrent strings and comments highlighting
45​ //
46​ // Main idea: as soon as string starts comment or anything else cant start
47​ // until current string ends. The same with comment, except '#' comment
48​ // that ends by newline
49​ //
50​ // To pass information to next block, we are using next states
44 const int IN_MULTILINE_COMMENT = 1; 51​ const int IN_MULTILINE_COMMENT = 1;
45 const int IN_CHARACTER = 2; 52​ const int IN_CHARACTER = 2;
46 const int IN_SINGLE_QUOTE_STRING = 4; 53​ const int IN_SINGLE_QUOTE_STRING = 4;
47 const int IN_TRIPLE_QUOTE_STRING = 8; 54​ const int IN_TRIPLE_QUOTE_STRING = 8;
48 55​
56​ // Markers of scopes start, ends
49 QRegExp multiLineCommentStart(QLatin1String("#=")); 57​ QRegExp multiLineCommentStart(QLatin1String("#="));
50 QRegExp multiLineCommentEnd(QLatin1String("=#")); 58​ QRegExp multiLineCommentEnd(QLatin1String("=#"));
51 QRegExp characterStartEnd(QLatin1String("'")); 59​ QRegExp characterStartEnd(QLatin1String("'"));
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53 QRegExp tripleQuoteStringStartEnd(QLatin1String("\"\"\"")); 61​ QRegExp tripleQuoteStringStartEnd(QLatin1String("\"\"\""));
54 QRegExp singleLineCommentStart(QLatin1String("#(?!=)")); 62​ QRegExp singleLineCommentStart(QLatin1String("#(?!=)"));
55 63​
64​ // Get current state
56 int state = previousBlockState(); 65​ int state = previousBlockState();
57 if (state == -1) { 66​ if (state == -1) {
58 state = 0; 67​ state = 0;
59 } 68​ }
60 69​
70​ // This 4 arrays establish matching between state, start marker, end marker
71​ // and format to apply
61 QList<int> flags = { 72​ QList<int> flags = {
62 IN_TRIPLE_QUOTE_STRING, 73​ IN_TRIPLE_QUOTE_STRING,
63 IN_SINGLE_QUOTE_STRING, 74​ IN_SINGLE_QUOTE_STRING,
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83 commentFormat() 94​ commentFormat()
84 }; 95​ };
85 96​
86 int pos = 0; 97​ int pos = 0; // current position in block
87 while (pos < text.length()) { 98​ while (pos < text.length()) {
88 // Trying to close current environments 99​ // Trying to close current environments
89 bool triggered = false; 100​ bool triggered = false;
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91 int flag = flags[i]; 102​ int flag = flags[i];
92 QRegExp &regexp = regexps_ends[i]; 103​ QRegExp &regexp = regexps_ends[i];
93 QTextCharFormat &format = formats[i]; 104​ QTextCharFormat &format = formats[i];
94 if (state & flag) { 105​ if (state & flag) { // Found current state
106​ // find where end marker is
95 int new_pos = regexp.indexIn(text, pos); 107​ int new_pos = regexp.indexIn(text, pos);
96 int length; 108​ int length;
97 if (new_pos == -1) { 109​ if (new_pos == -1) {
110​ // not in this block, highlight till the end
98 length = text.length() - pos; 111​ length = text.length() - pos;
99 } else { 112​ } else {
113​ // highlight untill the marker and modify state
100 length = new_pos - pos + regexp.matchedLength(); 114​ length = new_pos - pos + regexp.matchedLength();
101 state -= flag; 115​ state -= flag;
102 } 116​ }
117​ // Apply format to the found area
103 setFormat(pos, length, format); 118​ setFormat(pos, length, format);
104 pos = pos + length; 119​ pos = pos + length;
105 triggered = true; 120​ triggered = true;
106 } 121​ }
107 } 122​ }
108 if (triggered) { 123​ if (triggered) { // We have done something move to next iteration
109 continue; 124​ continue;
110 } 125​ }
111 126​
112 QRegExp *minRegexp = nullptr; 127​ // Now we should found the scope that start the closest to current
113 int minPos = INT_MAX; 128​ // position
114 int minIdx = -1; 129​ QRegExp *minRegexp = nullptr; // closest marker
130​ int minPos = INT_MAX; // closest pos
131​ int minIdx = -1; // closest scope index
115 for (int i = 0; i < regexps_starts.size(); i++) { 132​ for (int i = 0; i < regexps_starts.size(); i++) {
116 QRegExp &regexp = regexps_starts[i]; 133​ QRegExp &regexp = regexps_starts[i];
117 int newPos = regexp.indexIn(text, pos); 134​ int newPos = regexp.indexIn(text, pos);
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122 } 139​ }
123 } 140​ }
124 141​
142​ // Check where single line comment starts
125 int singleLineCommentStartPos = 143​ int singleLineCommentStartPos =
126 singleLineCommentStart.indexIn(text, pos); 144​ singleLineCommentStart.indexIn(text, pos);
127 145​
128 if (singleLineCommentStartPos != -1 146​ if (singleLineCommentStartPos != -1
129 and singleLineCommentStartPos < minPos) { 147​ and singleLineCommentStartPos < minPos) {
148​ // single line comment starts earlier
130 setFormat(pos, text.length() - pos, commentFormat()); 149​ setFormat(pos, text.length() - pos, commentFormat());
131 break; 150​ break;
132 } else if (minRegexp) { 151​ } else if (minRegexp) {
152​ // We are going to another scope
133 state += flags[minIdx]; 153​ state += flags[minIdx];
134 pos = minPos + minRegexp->matchedLength(); 154​ pos = minPos + minRegexp->matchedLength();
135 setFormat(minPos, minRegexp->matchedLength(), formats[minIdx]); 155​ setFormat(minPos, minRegexp->matchedLength(), formats[minIdx]);
136 } else { 156​ } else { // There is nothing to highlight
137 break; 157​ break;
138 } 158​ }
139 } 159​ }
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143 163​
144void JuliaHighlighter::updateHighlight() 164​void JuliaHighlighter::updateHighlight()
145{ 165​{
166​ // Remove rules for outdated variables and functions
146 for (const auto &var : JuliaKeywords::instance()->removedVariables()) { 167​ for (const auto &var : JuliaKeywords::instance()->removedVariables()) {
147 removeRule(var); 168​ removeRule(var);
148 } 169​ }
149 ​
150 for (const auto &func : JuliaKeywords::instance()->removedFunctions()) { 170​ for (const auto &func : JuliaKeywords::instance()->removedFunctions()) {
151 removeRule(func); 171​ removeRule(func);
152 } 172​ }
153 173​
174​ // Add actual variables and function
154 addVariables(JuliaKeywords::instance()->variables()); 175​ addVariables(JuliaKeywords::instance()->variables());
155 addFunctions(JuliaKeywords::instance()->functions()); 176​ addFunctions(JuliaKeywords::instance()->functions());
156 rehighlight(); 177​ rehighlight();
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