src/parser.cpp

Fri, 06 Mar 2020 16:08:53 +0200

author
Teemu Piippo <teemu@hecknology.net>
date
Fri, 06 Mar 2020 16:08:53 +0200
changeset 69
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parent 35
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child 77
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permissions
-rw-r--r--

begin work on axes program

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1 /*
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2 * LDForge: LDraw parts authoring CAD
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3 * Copyright (C) 2013 - 2020 Teemu Piippo
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4 *
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5 * This program is free software: you can redistribute it and/or modify
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6 * it under the terms of the GNU General Public License as published by
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7 * the Free Software Foundation, either version 3 of the License, or
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8 * (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * GNU General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU General Public License
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 */
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18
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19 #include "model.h"
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20 #include "parser.h"
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21 #include "linetypes/comment.h"
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22 #include "linetypes/conditionaledge.h"
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23 #include "linetypes/edge.h"
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24 #include "linetypes/errorline.h"
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25 #include "linetypes/metacommand.h"
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26 #include "linetypes/object.h"
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27 #include "linetypes/quadrilateral.h"
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28 #include "linetypes/subfilereference.h"
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29 #include "linetypes/triangle.h"
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30
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31 struct BodyParseError
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32 {
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33 QString message;
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34 };
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35
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36 /*
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37 * Constructs an LDraw parser
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38 */
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39 Parser::Parser(QIODevice& device, QObject* parent) :
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40 QObject {parent},
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41 device {device} {}
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42
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43 /*
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44 * Reads a single line from the device.
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45 */
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46 QString Parser::readLine()
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47 {
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48 return QString::fromUtf8(this->device.readLine()).trimmed();
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49 }
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50
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51 static const QMap<QString, LDHeader::FileType> typeStrings {
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52 {"Part", LDHeader::Part},
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53 {"Subpart", LDHeader::Subpart},
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54 {"Shortcut", LDHeader::Shortcut},
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55 {"Primitive", LDHeader::Primitive},
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56 {"8_Primitive", LDHeader::Primitive_8},
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57 {"48_Primitive", LDHeader::Primitive_48},
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58 {"Configuration", LDHeader::Configuration},
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59 };
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60
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61 /*
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62 * Parses a single line of the header.
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63 * Possible parse results:
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64 * · ParseSuccess: the header line was parsed successfully.
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65 * · ParseFailure: the header line was parsed incorrectly and needs to be handled otherwise.
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66 * · StopParsing: the line does not belong in the header and header parsing needs to stop.
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67 */
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68 Parser::HeaderParseResult Parser::parseHeaderLine(
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69 LDHeader& header,
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70 Winding& winding,
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71 const QString& line
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72 ) {
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73 if (line.isEmpty())
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74 {
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75 return ParseSuccess;
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76 }
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77 else if (not line.startsWith("0") or line.startsWith("0 //"))
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78 {
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79 return StopParsing;
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80 }
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81 else if (line.startsWith("0 !LDRAW_ORG "))
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82 {
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83 QStringList tokens = line
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84 .mid(strlen("0 !LDRAW_ORG "))
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85 .split(" ", QString::SkipEmptyParts);
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86 if (not tokens.isEmpty())
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87 {
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88 QString partTypeString = tokens[0];
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89 // Anything that enters LDForge becomes unofficial in any case if saved.
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90 // Therefore we don't need to give the Unofficial type any special
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91 // consideration.
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92 if (partTypeString.startsWith("Unofficial_"))
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93 partTypeString = partTypeString.mid(strlen("Unofficial_"));
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94 header.type = typeStrings.value(partTypeString, LDHeader::Part);
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95 header.qualfiers = {};
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96 if (tokens.contains("Alias"))
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97 header.qualfiers |= LDHeader::Alias;
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98 if (tokens.contains("Physical_Color"))
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99 header.qualfiers |= LDHeader::PhysicalColour;
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100 if (tokens.contains("Flexible_Section"))
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101 header.qualfiers |= LDHeader::FlexibleSection;
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102 return ParseSuccess;
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103 }
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104 else
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105 {
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106 return ParseFailure;
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107 }
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108 }
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109 else if (line == "0 BFC CERTIFY CCW")
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110 {
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111 winding = Anticlockwise;
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112 return ParseSuccess;
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113 }
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114 else if (line == "0 BFC CERTIFY CW")
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115 {
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116 winding = Clockwise;
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117 return ParseSuccess;
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118 }
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119 else if (line == "0 BFC NOCERTIFY")
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120 {
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121 winding = NoWinding;
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122 return ParseSuccess;
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123 }
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124 else if (line.startsWith("0 !HISTORY "))
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125 {
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126 static const QRegExp historyRegexp {
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127 R"(0 !HISTORY\s+(\d{4}-\d{2}-\d{2})\s+)"
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128 R"((\{[^}]+|\[[^]]+)[\]}]\s+(.+))"
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129 };
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130 if (historyRegexp.exactMatch(line))
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131 {
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132 QString dateString = historyRegexp.capturedTexts().value(1);
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133 QString authorWithPrefix = historyRegexp.capturedTexts().value(2);
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134 QString description = historyRegexp.capturedTexts().value(3);
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135 LDHeader::HistoryEntry historyEntry;
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136 historyEntry.date = QDate::fromString(dateString, Qt::ISODate);
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137 historyEntry.description = description;
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138
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139 if (authorWithPrefix[0] == '{')
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140 historyEntry.author = authorWithPrefix + "}";
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141 else
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142 historyEntry.author = authorWithPrefix.mid(1);
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143
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144 header.history.append(historyEntry);
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145 return ParseSuccess;
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146 }
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147 else
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148 {
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149 return ParseFailure;
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150 }
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151 }
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152 else if (line.startsWith("0 Author: "))
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parents:
diff changeset
153 {
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
154 header.author = line.mid(strlen("0 Author: "));
55a55a9ec2c2 Added lots of code
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parents:
diff changeset
155 return ParseSuccess;
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
156 }
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
157 else if (line.startsWith("0 Name: "))
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
158 {
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
159 header.name = line.mid(strlen("0 Name: "));
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parents:
diff changeset
160 return ParseSuccess;
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
161 }
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
162 else if (line.startsWith("0 !HELP "))
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
163 {
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
164 if (not header.help.isEmpty())
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parents:
diff changeset
165 header.help += "\n";
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parents:
diff changeset
166 header.help += line.mid(strlen("0 !HELP "));
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parents:
diff changeset
167 return ParseSuccess;
55a55a9ec2c2 Added lots of code
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parents:
diff changeset
168 }
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
169 else if (line.startsWith("0 !KEYWORDS "))
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
170 {
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
171 if (not header.keywords.isEmpty())
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parents:
diff changeset
172 header.keywords += "\n";
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parents:
diff changeset
173 header.keywords += line.mid(strlen("0 !KEYWORDS "));
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parents:
diff changeset
174 return ParseSuccess;
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parents:
diff changeset
175 }
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
176 else if (line.startsWith("0 !CATEGORY "))
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parents:
diff changeset
177 {
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parents:
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178 header.category = line.mid(strlen("0 !CATEGORY "));
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parents:
diff changeset
179 return ParseSuccess;
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parents:
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180 }
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parents:
diff changeset
181 else if (line.startsWith("0 !CMDLINE "))
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parents:
diff changeset
182 {
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parents:
diff changeset
183 header.cmdline = line.mid(strlen("0 !CMDLINE "));
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parents:
diff changeset
184 return ParseSuccess;
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parents:
diff changeset
185 }
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parents:
diff changeset
186 else if (line.startsWith("0 !LICENSE Redistributable under CCAL version 2.0"))
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parents:
diff changeset
187 {
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parents:
diff changeset
188 header.license = LDHeader::CaLicense;
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parents:
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189 return ParseSuccess;
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parents:
diff changeset
190 }
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
191 else if (line.startsWith("0 !LICENSE Not redistributable"))
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parents:
diff changeset
192 {
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parents:
diff changeset
193 header.license = LDHeader::NonCaLicense;
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parents:
diff changeset
194 return ParseSuccess;
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parents:
diff changeset
195 }
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parents:
diff changeset
196 else
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parents:
diff changeset
197 {
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parents:
diff changeset
198 return ParseFailure;
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parents:
diff changeset
199 }
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
200 }
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
201
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
202 /*
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
203 * Parses the header from the device given at construction and returns
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
204 * the resulting header structure.
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
205 */
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
206 LDHeader Parser::parseHeader(Winding& winding)
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
207 {
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
208 LDHeader header = {};
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
209 if (not this->device.atEnd())
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
210 {
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
211 // Parse the description
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
212 QString descriptionLine = this->readLine();
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
213 if (descriptionLine.startsWith("0 "))
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
214 {
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
215 header.description = descriptionLine.mid(strlen("0 ")).trimmed();
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
216 // Parse the rest of the header
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
217 while (not this->device.atEnd())
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
218 {
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
219 const QString& line = this->readLine();
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
220 auto result = parseHeaderLine(header, winding, line);
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
221 if (result == ParseFailure)
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
222 {
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Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
223 // Failed to parse this header line, add it as a comment into the body later.
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
224 this->bag.append(line);
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
225 }
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
226 else if (result == StopParsing)
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
227 {
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
228 // Header parsing stops, add this line to the body.
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
229 this->bag.append(line);
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
230 break;
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
231 }
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
232 }
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
233 }
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
234 else
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
235 {
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
236 this->bag.append(descriptionLine);
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
237 }
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
238 }
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
239 return header;
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
240 }
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
241
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
242 /**
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
243 * @brief Parses the model body into the given model.
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
244 * @param editor Handle to model edit context
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
245 */
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
246 void Parser::parseBody(Model::EditContext& editor)
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
247 {
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
248 bool invertNext = false;
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
249 while (not this->device.atEnd())
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
250 this->bag.append(this->readLine());
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
251 for (const QString& line : this->bag)
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
252 {
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
253 if (line == "0 BFC INVERTNEXT" or line == "0 BFC CERTIFY INVERTNEXT")
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
254 {
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
255 invertNext = true;
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
256 continue;
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
257 }
35
98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
Teemu Piippo <teemu@hecknology.net>
parents: 33
diff changeset
258 std::unique_ptr<ldraw::Object> object = parseFromString(line);
26
3a9e761e4faa at least VAOs work now
Teemu Piippo <teemu@hecknology.net>
parents: 24
diff changeset
259 auto id = editor.append(std::move(object));
3
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
260 if (invertNext)
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
261 {
26
3a9e761e4faa at least VAOs work now
Teemu Piippo <teemu@hecknology.net>
parents: 24
diff changeset
262 editor.invertObject(id);
3
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
263 }
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
264 invertNext = false;
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
265 }
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
266 }
55a55a9ec2c2 Added lots of code
Teemu Piippo <teemu@hecknology.net>
parents:
diff changeset
267
35
98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
Teemu Piippo <teemu@hecknology.net>
parents: 33
diff changeset
268 static ldraw::Color colorFromString(const QString& colorString)
4
68988ebc2a68 added regular expressions for the parser
Teemu Piippo <teemu@hecknology.net>
parents: 3
diff changeset
269 {
8
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
270 bool colorSucceeded;
35
98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
Teemu Piippo <teemu@hecknology.net>
parents: 33
diff changeset
271 const ldraw::Color color = {colorString.toInt(&colorSucceeded)};
8
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
272 if (colorSucceeded)
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
273 {
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
274 return color;
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
275 }
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
276 else
4
68988ebc2a68 added regular expressions for the parser
Teemu Piippo <teemu@hecknology.net>
parents: 3
diff changeset
277 {
8
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
278 throw BodyParseError{"colour was not an integer value"};
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
279 }
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
280 }
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
281
33
4c41bfe2ec6e replaced matrix and vertex classes with glm
Teemu Piippo <teemu@hecknology.net>
parents: 26
diff changeset
282 static glm::vec3 vertexFromStrings(
8
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
283 const QStringList& tokens,
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
284 const int startingPosition)
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
285 {
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
286 bool ok_x;
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
287 const float x = tokens[startingPosition].toFloat(&ok_x);
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
288 bool ok_y;
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
289 const float y = tokens[startingPosition + 1].toFloat(&ok_y);
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
290 bool ok_z;
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
291 const float z = tokens[startingPosition + 2].toFloat(&ok_z);
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
292 if (not ok_x or not ok_y or not ok_z)
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
293 {
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
294 throw BodyParseError{"vertex contained illegal co-ordinates"};
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
295 }
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
296 return {x, y, z};
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
297 }
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
298
33
4c41bfe2ec6e replaced matrix and vertex classes with glm
Teemu Piippo <teemu@hecknology.net>
parents: 26
diff changeset
299 static glm::mat4 matrixFromStrings(const QStringList& tokens, const int startingPosition, const int positionStartingIndex)
8
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
300 {
33
4c41bfe2ec6e replaced matrix and vertex classes with glm
Teemu Piippo <teemu@hecknology.net>
parents: 26
diff changeset
301 glm::mat4 result = glm::mat4{1};
8
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
302 for (int i = 0; i < 9; i += 1)
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
303 {
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
304 const int row = i / 3;
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
305 const int column = i % 3;
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
306 const int index = i + startingPosition;
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
307 if (index >= tokens.size())
4
68988ebc2a68 added regular expressions for the parser
Teemu Piippo <teemu@hecknology.net>
parents: 3
diff changeset
308 {
8
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
309 throw BodyParseError{"too few tokens available"};
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310 }
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311 bool ok;
33
4c41bfe2ec6e replaced matrix and vertex classes with glm
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312 // note that glm::mat4 is column-major
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313 result[column][row] = tokens[index].toFloat(&ok);
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314 if (not ok)
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315 {
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316 throw BodyParseError{"non-numeric values for matrix"};
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317 }
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318 }
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319 for (int i = 0; i < 3; i += 1)
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320 {
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321 bool ok;
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322 const auto value = tokens[i + positionStartingIndex].toFloat(&ok);
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323 result[3][i] = value;
8
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324 if (not ok)
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325 {
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326 throw BodyParseError{"non-numeric values for matrix"};
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327 }
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328 }
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329 return result;
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330 }
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331
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332 static std::unique_ptr<ldraw::Object> parseType0Line(
8
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333 const QString& line,
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334 const QStringList& tokens)
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335 {
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336 Q_UNUSED(tokens)
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337 if (line.startsWith("0 //"))
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338 {
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339 return std::make_unique<ldraw::Comment>(line.mid(std::strlen("0 //")).simplified());
8
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340 }
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341 else
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342 {
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343 return std::make_unique<ldraw::MetaCommand>(line.mid(1).simplified());
4
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344 }
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345 }
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346
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347 static std::unique_ptr<ldraw::SubfileReference> parseType1Line(
8
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348 const QString& line,
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349 const QStringList& tokens)
5
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350 {
8
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351 Q_UNUSED(line)
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352 constexpr int colorPosition = 1;
23
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353 constexpr int positionPosition = 2; // 2..4
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354 constexpr int transformPosition = 5; // 5..13
8
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355 constexpr int namePosition = 14;
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356 if (tokens.size() != 15)
5
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357 {
8
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358 throw BodyParseError{"wrong amount of tokens in a type-1 line"};
5
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359 }
35
98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
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360 const ldraw::Color color = colorFromString(tokens[colorPosition]);
33
4c41bfe2ec6e replaced matrix and vertex classes with glm
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361 const glm::mat4 transform = matrixFromStrings(tokens, transformPosition, positionPosition);
8
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362 const QString& name = tokens[namePosition];
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98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
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363 return std::make_unique<ldraw::SubfileReference>(transform, name, color);
5
Teemu Piippo <teemu@hecknology.net>
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364 }
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diff changeset
365
8
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366 template<typename T, int NumVertices>
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367 static std::unique_ptr<T> parsePolygon(
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368 const QString& line,
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369 const QStringList& tokens)
5
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370 {
8
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371 Q_UNUSED(line)
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372 constexpr int colorPosition = 1;
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373 auto vertexPosition = [](int n) { return 2 + 3*n; };
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diff changeset
374 if (tokens.size() != 2 + 3 * NumVertices)
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Teemu Piippo <teemu@hecknology.net>
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diff changeset
375 {
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376 throw BodyParseError{"wrong amount of tokens"};
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377 }
35
98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
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diff changeset
378 const ldraw::Color color = colorFromString(tokens[colorPosition]);
33
4c41bfe2ec6e replaced matrix and vertex classes with glm
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diff changeset
379 QVector<glm::vec3> vertices;
8
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diff changeset
380 vertices.reserve(NumVertices);
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diff changeset
381 for (int i = 0; i < NumVertices; i += 1)
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diff changeset
382 {
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diff changeset
383 vertices.append(vertexFromStrings(tokens, vertexPosition(i)));
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diff changeset
384 }
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diff changeset
385 return std::make_unique<T>(vertices, color);
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diff changeset
386 }
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parents: 5
diff changeset
387
35
98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
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diff changeset
388 std::unique_ptr<ldraw::Object> Parser::parseFromString(QString line)
8
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diff changeset
389 {
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390 line = line.simplified();
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diff changeset
391 try
5
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diff changeset
392 {
8
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diff changeset
393 const QStringList tokens = line.split(QRegExp{R"(\s+)"});
12
fe67489523b5 added dependency loading
Teemu Piippo <teemu@hecknology.net>
parents: 8
diff changeset
394 if (tokens.empty() or tokens == QStringList{{""}})
8
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parents: 5
diff changeset
395 {
35
98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
Teemu Piippo <teemu@hecknology.net>
parents: 33
diff changeset
396 return std::make_unique<ldraw::Empty>();
8
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diff changeset
397 }
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diff changeset
398 bool ok_code;
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diff changeset
399 const int code = tokens[0].toInt(&ok_code);
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diff changeset
400 if (not ok_code)
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parents: 5
diff changeset
401 {
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diff changeset
402 throw BodyParseError{"line type was not an integer"};
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Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
403 }
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Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
404 switch (code)
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Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
405 {
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Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
406 case 0:
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parents: 5
diff changeset
407 return parseType0Line(line, tokens);
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parents: 5
diff changeset
408 case 1:
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diff changeset
409 return parseType1Line(line, tokens);
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parents: 5
diff changeset
410 case 2:
35
98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
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parents: 33
diff changeset
411 return parsePolygon<ldraw::Edge, 2>(line, tokens);
8
44679e468ba9 major update with many things
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parents: 5
diff changeset
412 case 3:
35
98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
Teemu Piippo <teemu@hecknology.net>
parents: 33
diff changeset
413 return parsePolygon<ldraw::Triangle, 3>(line, tokens);
8
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
414 case 4:
35
98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
Teemu Piippo <teemu@hecknology.net>
parents: 33
diff changeset
415 return parsePolygon<ldraw::Quadrilateral, 4>(line, tokens);
8
44679e468ba9 major update with many things
Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
416 case 5:
35
98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
Teemu Piippo <teemu@hecknology.net>
parents: 33
diff changeset
417 return parsePolygon<ldraw::ConditionalEdge, 4>(line, tokens);
8
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Teemu Piippo <teemu@hecknology.net>
parents: 5
diff changeset
418 default:
44679e468ba9 major update with many things
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diff changeset
419 throw BodyParseError{utility::format("bad line type '%1'", code)};
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parents: 5
diff changeset
420 }
5
Teemu Piippo <teemu@hecknology.net>
parents: 4
diff changeset
421 }
8
44679e468ba9 major update with many things
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parents: 5
diff changeset
422 catch(const BodyParseError& error)
5
Teemu Piippo <teemu@hecknology.net>
parents: 4
diff changeset
423 {
35
98906a94732f renamed the linetypes namespace to ldraw namespace and added more structures to it
Teemu Piippo <teemu@hecknology.net>
parents: 33
diff changeset
424 return std::make_unique<ldraw::ErrorLine>(line, error.message);
5
Teemu Piippo <teemu@hecknology.net>
parents: 4
diff changeset
425 }
Teemu Piippo <teemu@hecknology.net>
parents: 4
diff changeset
426 }

mercurial