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1 /****************************************************************************
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2 **
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3 ** Copyright (C) 1992-2008 Nokia. All rights reserved.
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4 **
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5 ** This file is part of Qt Jambi.
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6 **
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7 ** * Commercial Usage
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8 * Licensees holding valid Qt Commercial licenses may use this file in
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9 * accordance with the Qt Commercial License Agreement provided with the
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10 * Software or, alternatively, in accordance with the terms contained in
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11 * a written agreement between you and Nokia.
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12 *
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13 *
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14 * GNU General Public License Usage
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15 * Alternatively, this file may be used under the terms of the GNU
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16 * General Public License versions 2.0 or 3.0 as published by the Free
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17 * Software Foundation and appearing in the file LICENSE.GPL included in
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18 * the packaging of this file. Please review the following information
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19 * to ensure GNU General Public Licensing requirements will be met:
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20 * http://www.fsf.org/licensing/licenses/info/GPLv2.html and
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21 * http://www.gnu.org/copyleft/gpl.html. In addition, as a special
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22 * exception, Nokia gives you certain additional rights. These rights
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23 * are described in the Nokia Qt GPL Exception version 1.2, included in
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24 * the file GPL_EXCEPTION.txt in this package.
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25 *
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26 * Qt for Windows(R) Licensees
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27 * As a special exception, Nokia, as the sole copyright holder for Qt
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28 * Designer, grants users of the Qt/Eclipse Integration plug-in the
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29 * right for the Qt/Eclipse Integration to link to functionality
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30 * provided by Qt Designer and its related libraries.
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31 *
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32 *
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33 * If you are unsure which license is appropriate for your use, please
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34 * contact the sales department at qt-sales@nokia.com.
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35
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36 **
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37 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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38 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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39 **
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40 ****************************************************************************/
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41
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42 #include "cppgenerator.h"
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43 #include "reporthandler.h"
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44
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45 #include "metajava.h"
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46
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47 // ### There's a bug in Qt causing it to fail at normalizing signatures
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48 // on the form FooBar<T> const&, which is the form the C++ parser uses
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49 // for all types, so connections between Java and C++ with const& templates
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50 // will fail. This is a work around which is only needed until that bug is fixed.
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51 // Since Qt works correctly with const FooBar<T> &, we simply change the
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52 // signature to that.
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53 QString CppGenerator::fixNormalizedSignatureForQt(const QString &signature)
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54 {
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55 QString ret = signature;
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56 if (signature.contains("<") && signature.endsWith("const&")) {
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57 ret = "const "
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58 + signature.mid(0, signature.size() - 6)
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59 + "&";
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60 }
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61 return ret;
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62 }
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63
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64 void CppGenerator::writeTypeInfo(QTextStream &s, const AbstractMetaType *type, Option options)
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65 {
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66 if ((options & OriginalTypeDescription) && !type->originalTypeDescription().isEmpty()) {
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67 QString originalTypeDescription = type->originalTypeDescription();
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68
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69 if (options & NormalizeAndFixTypeSignature) {
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70 originalTypeDescription = QMetaObject::normalizedSignature(originalTypeDescription.toLatin1().constData());
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71 originalTypeDescription = fixNormalizedSignatureForQt(originalTypeDescription);
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72 }
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73
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74 s << originalTypeDescription;
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75 return;
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76 }
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77
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78 if (type->isArray()) {
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79 writeTypeInfo(s, type->arrayElementType(), options);
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80 if (options & ArrayAsPointer) {
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81 s << "*";
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82 } else {
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83 s << "[" << type->arrayElementCount() << "]";
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84 }
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85 return;
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86 }
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87
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88 const TypeEntry *te = type->typeEntry();
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89
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90 if (type->isConstant() && !(options & ExcludeConst))
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91 s << "const ";
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92
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93 if ((options & EnumAsInts) && (te->isEnum() || te->isFlags())) {
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94 s << "int";
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95 } else if (te->isFlags()) {
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96 s << ((FlagsTypeEntry *) te)->originalName();
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97 } else {
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98 if (options & VirtualDispatch && te->name() == "QModelIndex")
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99 s << "QModelIndexAccessor";
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100 else
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101 s << fixCppTypeName(te->qualifiedCppName());
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102 }
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103
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104 if (type->instantiations().size() > 0
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105 && (!type->isContainer()
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106 || (static_cast<const ContainerTypeEntry *>(te))->type() != ContainerTypeEntry::StringListContainer)) {
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107 s << '<';
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108 QList<AbstractMetaType *> args = type->instantiations();
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109 bool nested_template = false;
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110 for (int i=0; i<args.size(); ++i) {
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111 if (i != 0)
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112 s << ", ";
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113 nested_template |= args.at(i)->isContainer();
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114 writeTypeInfo(s, args.at(i));
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115 }
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116 if (nested_template)
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117 s << ' ';
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118 s << '>';
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119 }
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120
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121 int actual_indirections = type->indirections();
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122 // for getting C++ elements from array we want pointers even if elements are
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123 // values because wrapper actually contains pointers
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124 if ((options & ForcePointer) && actual_indirections == 0
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125 && !type->isPrimitive() && !type->typeEntry()->isStructInD()
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126 && type->name() != "QModelIndex")
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127 actual_indirections = 1;
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128
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129 s << QString(actual_indirections, '*');
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130
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131 if (type->isReference() && !(options & ExcludeReference))
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132 s << "&";
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133
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134 if (!(options & SkipName))
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135 s << ' ';
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136 }
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137
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138
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139 void CppGenerator::writeFunctionArguments(QTextStream &s,
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140 const AbstractMetaArgumentList &arguments,
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141 Option option,
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142 int numArguments)
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143 {
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144 if (numArguments < 0) numArguments = arguments.size();
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145
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146 for (int i=0; i<numArguments; ++i) {
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147 if (i != 0)
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148 s << ", ";
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149 AbstractMetaArgument *arg = arguments.at(i);
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150 writeTypeInfo(s, arg->type(), option);
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151 if (!(option & SkipName))
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152 s << " " << arg->indexedName();
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153 if ((option & IncludeDefaultExpression) && !arg->originalDefaultValueExpression().isEmpty()) {
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154 s << " = ";
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155
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156 QString expr = arg->originalDefaultValueExpression();
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157 if (arg->type()->typeEntry()->isEnum() && expr.indexOf("::") < 0)
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158 s << ((EnumTypeEntry *)arg->type()->typeEntry())->qualifier() << "::";
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159
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160 s << expr;
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161 }
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162 }
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163 }
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164
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165 /*!
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166 * Writes the function \a java_function signature to the textstream \a s.
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167 *
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168 * The \a name_prefix can be used to give the function name a prefix,
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169 * like "__public_" or "__override_" and \a classname_prefix can
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170 * be used to give the class name a prefix.
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171 *
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172 * The \a option flags can be used to tweak various parameters, such as
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173 * showing static, original vs renamed name, underscores for space etc.
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174 *
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175 * The \a extra_arguments list is a list of extra arguments on the
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176 * form "bool static_call".
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177 */
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178
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179 void CppGenerator::writeFunctionSignature(QTextStream &s,
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180 const AbstractMetaFunction *java_function,
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181 const AbstractMetaClass *implementor,
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182 const QString &name_prefix,
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183 Option option,
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184 const QString &classname_prefix,
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185 const QStringList &extra_arguments,
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186 int numArguments)
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187 {
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188 // ### remove the implementor
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189 AbstractMetaType *function_type = java_function->type();
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190
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191 if (java_function->isStatic() && (option & ShowStatic))
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192 s << "static ";
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193
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194 if ((option & SkipReturnType) == 0) {
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195 if (function_type) {
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196 writeTypeInfo(s, function_type, option);
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197 s << " ";
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198 } else if (!java_function->isConstructor()) {
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199 s << "void ";
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200 }
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201 }
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202
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203 if (implementor) {
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204 if (classname_prefix.isEmpty())
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205 s << shellClassName(implementor) << "::";
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206 else
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207 s << classname_prefix << implementor->name() << "::";
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208 }
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209
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210
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211 QString function_name;
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212 if (option & OriginalName)
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213 function_name = java_function->originalName();
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214 else
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215 function_name = java_function->name();
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216
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217 if (option & UnderscoreSpaces)
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218 function_name = function_name.replace(' ', '_');
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219
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220 if (java_function->isConstructor())
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221 function_name = shellClassName(java_function->ownerClass());
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222
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223 s << name_prefix << function_name;
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224
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225 if (java_function->attributes() & AbstractMetaAttributes::SetterFunction)
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226 s << "_setter";
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227 else if (java_function->attributes() & AbstractMetaAttributes::GetterFunction)
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228 s << "_getter";
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229
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230 s << "(";
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231 const AbstractMetaClass *owner = java_function->ownerClass();
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232
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233 bool has_d_ptr = java_function->isConstructor() && owner && (owner->hasVirtualFunctions()/* || owner->typeEntry()->isObject()*/ );
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234 const AbstractMetaArgumentList arg_list = java_function->arguments();
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235 if (has_d_ptr) {
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236 s << "void *d_ptr";
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237 if (arg_list.size() > 0)
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238 s << ", ";
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239 }
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240 writeFunctionArguments(s, arg_list, option, numArguments);
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241
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242 // The extra arguments...
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243 for (int i=0; i<extra_arguments.size(); ++i) {
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244 if (i > 0 || java_function->arguments().size() != 0)
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245 s << ", ";
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246 s << extra_arguments.at(i);
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247 }
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248
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249 s << ")";
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250 if (java_function->isConstant())
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251 s << " const";
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252 }
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