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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the QtSCriptTools module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include "qscriptxmlparser_p.h" |
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43 |
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44 #include <QtCore/qstringlist.h> |
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45 #include <QtCore/qxmlstream.h> |
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46 #include <QtCore/qdebug.h> |
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47 |
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48 QT_BEGIN_NAMESPACE |
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49 |
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50 static void tokenUntil(QXmlStreamReader &reader, QXmlStreamReader::TokenType target, |
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51 QList<int> &lineNumbers) |
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52 { |
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53 int level = 0; |
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54 while (!reader.atEnd()) { |
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55 QXmlStreamReader::TokenType t = reader.readNext(); |
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56 if ((t == target) && (level == 0)) |
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57 return; |
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58 if (t == QXmlStreamReader::StartElement) { |
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59 ++level; |
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60 QString line = reader.attributes().value(QLatin1String("line")).toString(); |
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61 if (!line.isEmpty()) |
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62 lineNumbers.append(line.toInt()); |
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63 } else if (t == QXmlStreamReader::EndElement) { |
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64 --level; |
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65 } |
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66 } |
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67 // Q_ASSERT_X(false, "QScriptXmlParser", "premature end of file"); |
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68 } |
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69 |
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70 QScriptXmlParser::Result QScriptXmlParser::parse(const QString &xml) |
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71 { |
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72 QMap<QString, int> functionsInfo; |
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73 QList<int> lineNumbers; |
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74 QXmlStreamReader reader(xml); |
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75 reader.readNext(); // StartDocument |
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76 reader.readNext(); // <program> |
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77 reader.readNext(); // <source-elements> |
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78 while (reader.readNext() == QXmlStreamReader::StartElement) { |
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79 // qDebug() << reader.name().toString(); |
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80 int line = reader.attributes().value(QLatin1String("line")).toString().toInt(); |
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81 lineNumbers.append(line); |
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82 if (reader.name() == QLatin1String("function-declaration")) { |
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83 // extract the line number, name and formal parameters |
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84 reader.readNext(); // <name> |
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85 reader.readNext(); // Characters |
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86 QString name = reader.text().toString(); |
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87 reader.readNext(); // </name> |
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88 reader.readNext(); // <formal-parameter-list> |
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89 QStringList formalParameters; |
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90 while (reader.readNext() == QXmlStreamReader::StartElement) { |
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91 reader.readNext(); // Characters |
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92 formalParameters.append(reader.text().toString()); |
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93 reader.readNext(); // </identifier> |
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94 } |
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95 reader.readNext(); // <function-body> |
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96 tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
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97 |
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98 QString signature; |
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99 signature.append(name); |
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100 signature.append(QLatin1Char('(')); |
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101 for (int i = 0; i < formalParameters.size(); ++i) { |
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102 if (i > 0) |
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103 signature.append(QLatin1String(", ")); |
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104 signature.append(formalParameters.at(i)); |
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105 } |
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106 signature.append(QLatin1Char(')')); |
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107 functionsInfo.insert(signature, line); |
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108 } else if (reader.name() == QLatin1String("expression-statement")) { |
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109 reader.readNext(); |
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110 if ((reader.name() == QLatin1String("binary-expression")) |
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111 && reader.attributes().value(QLatin1String("op")) == QLatin1String("=")) { |
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112 // try to match a statement of the form Foo.prototype.bar = function() { ... } |
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113 // this can be generalized... |
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114 QString first, second, third; |
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115 reader.readNext(); // LHS |
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116 if (reader.name() == QLatin1String("field-member-expression")) { |
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117 reader.readNext(); |
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118 if (reader.name() == QLatin1String("field-member-expression")) { |
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119 reader.readNext(); |
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120 if (reader.name() == QLatin1String("identifier")) { |
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121 reader.readNext(); |
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122 first = reader.text().toString(); |
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123 } |
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124 tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
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125 reader.readNext(); |
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126 if (reader.name() == QLatin1String("identifier")) { |
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127 reader.readNext(); |
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128 second = reader.text().toString(); |
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129 } |
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130 tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
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131 } else if (reader.name() == QLatin1String("identifier")) { |
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132 reader.readNext(); |
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133 first = reader.text().toString(); |
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134 } |
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135 tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
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136 reader.readNext(); |
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137 if (reader.name() == QLatin1String("identifier")) { |
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138 reader.readNext(); |
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139 if (second.isEmpty()) |
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140 second = reader.text().toString(); |
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141 else |
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142 third = reader.text().toString(); |
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143 } |
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144 tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
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145 } |
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146 tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
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147 reader.readNext(); // RHS |
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148 if (reader.name() == QLatin1String("function-expression")) { |
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149 if (!first.isEmpty()) { |
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150 QString signature = first; |
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151 if (!second.isEmpty()) { |
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152 signature.append(QLatin1Char('.')); |
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153 signature.append(second); |
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154 if (!third.isEmpty()) { |
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155 signature.append(QLatin1Char('.')); |
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156 signature.append(third); |
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157 } |
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158 } |
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159 signature.append(QLatin1String("()")); |
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160 functionsInfo.insert(signature, line); |
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161 } |
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162 } |
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163 tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
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164 } |
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165 tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
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166 } |
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167 tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
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168 } |
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169 reader.readNext(); // </source-elements> |
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170 reader.readNext(); // </program> |
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171 reader.readNext(); // EndDocument |
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172 Q_ASSERT(reader.atEnd()); |
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173 return Result(functionsInfo, lineNumbers.toSet()); |
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174 } |
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175 |
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176 QT_END_NAMESPACE |