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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2008 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 QtXmlPatterns 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 // |
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43 // W A R N I N G |
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44 // ------------- |
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45 // |
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46 // This file is not part of the Qt API. It exists purely as an |
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47 // implementation detail. This header file may change from version to |
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48 // version without notice, or even be removed. |
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49 // |
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50 // We mean it. |
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51 |
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52 #ifndef Patternist_XsdSchemaHelper_H |
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53 #define Patternist_XsdSchemaHelper_H |
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54 |
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55 #include "qcomparisonfactory_p.h" |
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56 #include "qschematype_p.h" |
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57 #include "qxsdattributegroup_p.h" |
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58 #include "qxsdelement_p.h" |
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59 #include "qxsdparticle_p.h" |
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60 #include "qxsdschemacontext_p.h" |
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61 #include "qxsdwildcard_p.h" |
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62 |
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63 QT_BEGIN_HEADER |
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64 |
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65 QT_BEGIN_NAMESPACE |
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66 |
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67 namespace QPatternist |
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68 { |
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69 |
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70 /** |
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71 * @short Contains helper methods that are used by XsdSchemaParser, XsdSchemaResolver and XsdSchemaChecker. |
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72 * |
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73 * @ingroup Patternist_schema |
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74 * @author Tobias Koenig <tobias.koenig@nokia.com> |
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75 */ |
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76 class XsdSchemaHelper |
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77 { |
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78 public: |
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79 /** |
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80 * Checks whether the given @p particle is emptiable as defined by the |
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81 * algorithm in the schema spec. |
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82 */ |
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83 static bool isParticleEmptiable(const XsdParticle::Ptr &particle); |
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84 |
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85 /** |
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86 * Checks whether the given @p nameSpace is allowed by the given namespace @p constraint. |
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87 */ |
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88 static bool wildcardAllowsNamespaceName(const QString &nameSpace, |
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89 const XsdWildcard::NamespaceConstraint::Ptr &constraint); |
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90 |
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91 /** |
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92 * Checks whether the given @p name is allowed by the namespace constraint of the given @p wildcard. |
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93 */ |
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94 static bool wildcardAllowsExpandedName(const QXmlName &name, |
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95 const XsdWildcard::Ptr &wildcard, |
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96 const NamePool::Ptr &namePool); |
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97 |
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98 /** |
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99 * Checks whether the @p wildcard is a subset of @p otherWildcard. |
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100 */ |
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101 static bool isWildcardSubset(const XsdWildcard::Ptr &wildcard, const XsdWildcard::Ptr &otherWildcard); |
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102 |
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103 /** |
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104 * Returns the union of the given @p wildcard and @p otherWildcard. |
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105 */ |
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106 static XsdWildcard::Ptr wildcardUnion(const XsdWildcard::Ptr &wildcard, const XsdWildcard::Ptr &otherWildcard); |
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107 |
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108 /** |
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109 * Returns the intersection of the given @p wildcard and @p otherWildcard. |
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110 */ |
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111 static XsdWildcard::Ptr wildcardIntersection(const XsdWildcard::Ptr &wildcard, |
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112 const XsdWildcard::Ptr &otherWildcard); |
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113 |
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114 /** |
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115 * Returns whether the given @p type is validly substitutable for an @p otherType |
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116 * under the given @p constraints. |
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117 */ |
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118 static bool isValidlySubstitutable(const SchemaType::Ptr &type, |
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119 const SchemaType::Ptr &otherType, |
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120 const SchemaType::DerivationConstraints &constraints); |
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121 |
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122 /** |
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123 * Returns whether the simple @p derivedType can be derived from the simple @p baseType |
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124 * under the given @p constraints. |
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125 */ |
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126 static bool isSimpleDerivationOk(const SchemaType::Ptr &derivedType, |
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127 const SchemaType::Ptr &baseType, |
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128 const SchemaType::DerivationConstraints &constraints); |
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129 |
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130 /** |
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131 * Returns whether the complex @p derivedType can be derived from the complex @p baseType |
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132 * under the given @p constraints. |
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133 */ |
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134 static bool isComplexDerivationOk(const SchemaType::Ptr &derivedType, |
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135 const SchemaType::Ptr &baseType, |
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136 const SchemaType::DerivationConstraints &constraints); |
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137 |
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138 /** |
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139 * This method takes the two string based operands @p operand1 and @p operand2 and converts them to instances of type @p type. |
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140 * If the conversion fails, @c false is returned, otherwise the instances are compared by the given operator @p op and the |
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141 * result of the comparison is returned. |
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142 */ |
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143 static bool constructAndCompare(const DerivedString<TypeString>::Ptr &operand1, |
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144 const AtomicComparator::Operator op, |
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145 const DerivedString<TypeString>::Ptr &operand2, |
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146 const SchemaType::Ptr &type, |
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147 const ReportContext::Ptr &context, |
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148 const SourceLocationReflection *const sourceLocationReflection); |
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149 |
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150 /** |
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151 * Returns whether the process content property of the @p derivedWildcard is valid |
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152 * according to the process content property of its @p baseWildcard. |
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153 */ |
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154 static bool checkWildcardProcessContents(const XsdWildcard::Ptr &baseWildcard, |
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155 const XsdWildcard::Ptr &derivedWildcard); |
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156 |
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157 /** |
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158 * Checks whether @[ member is a member of the substitution group with the given @p head. |
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159 */ |
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160 static bool foundSubstitutionGroupTransitive(const XsdElement::Ptr &head, |
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161 const XsdElement::Ptr &member, |
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162 QSet<XsdElement::Ptr> &visitedElements); |
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163 |
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164 /** |
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165 * A helper method that iterates over the type hierarchy from @p memberType up to @p headType and collects all |
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166 * @p derivationSet and @p blockSet constraints that exists on the way there. |
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167 */ |
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168 static void foundSubstitutionGroupTypeInheritance(const SchemaType::Ptr &headType, |
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169 const SchemaType::Ptr &memberType, |
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170 QSet<SchemaType::DerivationMethod> &derivationSet, |
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171 NamedSchemaComponent::BlockingConstraints &blockSet); |
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172 |
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173 /** |
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174 * Checks if the @p member is transitive to @p head. |
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175 */ |
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176 static bool substitutionGroupOkTransitive(const XsdElement::Ptr &head, |
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177 const XsdElement::Ptr &member, |
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178 const NamePool::Ptr &namePool); |
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179 |
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180 /** |
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181 * Checks if @p derivedAttributeGroup is a valid restriction for @p attributeGroup. |
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182 */ |
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183 static bool isValidAttributeGroupRestriction(const XsdAttributeGroup::Ptr &derivedAttributeGroup, |
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184 const XsdAttributeGroup::Ptr &attributeGroup, |
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185 const XsdSchemaContext::Ptr &context, |
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186 QString &errorMsg); |
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187 |
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188 /** |
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189 * Checks if @p derivedAttributeUses are a valid restriction for @p attributeUses. |
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190 */ |
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191 static bool isValidAttributeUsesRestriction(const XsdAttributeUse::List &derivedAttributeUses, |
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192 const XsdAttributeUse::List &attributeUses, |
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193 const XsdWildcard::Ptr &derivedWildcard, |
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194 const XsdWildcard::Ptr &wildcard, |
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195 const XsdSchemaContext::Ptr &context, |
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196 QString &errorMsg); |
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197 |
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198 /** |
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199 * Checks if @p derivedAttributeUses are a valid extension for @p attributeUses. |
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200 */ |
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201 static bool isValidAttributeUsesExtension(const XsdAttributeUse::List &derivedAttributeUses, |
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202 const XsdAttributeUse::List &attributeUses, |
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203 const XsdWildcard::Ptr &derivedWildcard, |
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204 const XsdWildcard::Ptr &wildcard, |
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205 const XsdSchemaContext::Ptr &context, |
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206 QString &errorMsg); |
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207 |
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208 private: |
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209 Q_DISABLE_COPY(XsdSchemaHelper) |
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210 }; |
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211 } |
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212 |
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213 QT_END_NAMESPACE |
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214 |
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215 QT_END_HEADER |
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216 |
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217 #endif |