src/ldrawsyntaxhighlighter.cpp

Sat, 08 Apr 2023 12:55:11 +0300

author
Teemu Piippo <teemu.s.piippo@gmail.com>
date
Sat, 08 Apr 2023 12:55:11 +0300
changeset 343
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parent 342
9fd7dcab6d76
permissions
-rw-r--r--

Fix BFC formatting not working due to being evaluated after comment format

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1 #include "ldrawsyntaxhighlighter.h"
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2
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3 #define NUMBER_REGEX R"([+-]?(?:(?:\d+\.?\d*)|(?:\.\d+)))"
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4 #define SPACE_REGEX R"(\s+)"
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5 #define VEC3_REGEX "(" NUMBER_REGEX SPACE_REGEX NUMBER_REGEX SPACE_REGEX NUMBER_REGEX ")"
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6 #define TWO_VECTORS VEC3_REGEX SPACE_REGEX VEC3_REGEX
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7 #define THREE_VECTORS TWO_VECTORS SPACE_REGEX VEC3_REGEX
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8 #define FOUR_VECTORS THREE_VECTORS SPACE_REGEX VEC3_REGEX
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9
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10 LDrawSyntaxHighlighter::LDrawSyntaxHighlighter(QTextDocument* parent) :
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11 QSyntaxHighlighter{parent}
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12 {
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13 this->lineTypeFormat.setFontWeight(QFont::Bold);
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14 this->point1Format.setForeground(Qt::green);
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15 this->point2Format.setForeground(Qt::yellow);
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16 this->point3Format.setForeground(Qt::cyan);
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17 this->point4Format.setForeground(Qt::magenta);
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18 this->point2Format.setFontWeight(QFont::Bold);
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19 this->point4Format.setFontWeight(QFont::Bold);
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20 this->nameFormat.setFontItalic(true);
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21 this->bfcFormat.setForeground(Qt::green);
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22 this->bfcFormat.setFontWeight(QFont::Bold);
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23 this->errorFormat.setUnderlineColor(Qt::yellow);
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24 this->errorFormat.setUnderlineStyle(QTextCharFormat::WaveUnderline);
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25 this->refPattern = QRegularExpression{R"(^\s*(1)\s+(\d+)\s+)" FOUR_VECTORS SPACE_REGEX R"(([^ ]+)\s*$)"};
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26 this->trianglePattern = QRegularExpression{R"(^\s*(3)\s+(\d+)\s+)" THREE_VECTORS R"(\s*$)"};
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27 this->quadrilateralPattern = QRegularExpression{R"(^\s*(4)\s+(\d+)\s+)" FOUR_VECTORS R"(\s*$)"};
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28 this->cedgePattern = QRegularExpression{R"(^\s*(5)\s+(\d+)\s+)" FOUR_VECTORS R"(\s*$)"};
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29 this->bfcPattern = QRegularExpression{QStringLiteral(
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30 R"(^\s*(0) (BFC (?:CERTIFY CCW|CERTIFY CW|NOCERTIFY|INVERTNEXT|CLIP|NOCLIP))\s*$)"
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31 )};
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32 this->commentPattern = QRegularExpression{R"(^\s*(0)(\s+.*)?$)"};
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33 }
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34
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35 void LDrawSyntaxHighlighter::highlightBlock(const QString& text)
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36 {
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37 bool matched = false;
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38 const auto matchRegex = [&text, this, &matched](
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39 const QRegularExpression& re,
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40 const QVector<const QTextCharFormat*> formats
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41 ){
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42 if (not matched) {
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43 QRegularExpressionMatch match = re.match(text);
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44 if (match.hasMatch()) {
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45 for (int i = 0; i < formats.size(); ++i) {
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46 this->setFormat(match.capturedStart(i + 1), match.capturedLength(i + 1), *formats[i]);
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47 }
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48 }
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49 matched = match.hasMatch();
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50 }
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51 };
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52 matchRegex(this->refPattern, {
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53 &this->lineTypeFormat,
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54 &this->colorFormat,
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55 &this->point1Format,
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56 &this->point2Format,
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57 &this->point3Format,
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58 &this->point4Format,
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59 &this->nameFormat,
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60 });
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61 matchRegex(this->trianglePattern, {
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62 &this->lineTypeFormat,
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63 &this->colorFormat,
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64 &this->point1Format,
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65 &this->point2Format,
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66 &this->point3Format,
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67 });
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68 matchRegex(this->quadrilateralPattern, {
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69 &this->lineTypeFormat,
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70 &this->colorFormat,
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71 &this->point1Format,
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72 &this->point2Format,
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73 &this->point3Format,
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74 &this->point4Format,
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75 });
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76 matchRegex(this->cedgePattern, {
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77 &this->lineTypeFormat,
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78 &this->colorFormat,
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79 &this->point1Format,
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80 &this->point2Format,
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81 &this->point3Format,
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82 &this->point4Format,
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83 });
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84 matchRegex(this->bfcPattern, {
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85 &this->lineTypeFormat,
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86 &this->bfcFormat,
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87 });
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88 matchRegex(this->commentPattern, {
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89 &this->lineTypeFormat,
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90 &this->nameFormat,
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91 });
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92 if (not matched) {
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93 this->setFormat(0, text.length(), this->errorFormat);
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94 }
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95 }

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