1 | // Copyright (c) 2010-2013 AlphaSierraPapa for the SharpDevelop Team |
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2 | // |
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3 | // Permission is hereby granted, free of charge, to any person obtaining a copy of this |
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4 | // software and associated documentation files (the "Software"), to deal in the Software |
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5 | // without restriction, including without limitation the rights to use, copy, modify, merge, |
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6 | // publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons |
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7 | // to whom the Software is furnished to do so, subject to the following conditions: |
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8 | // |
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9 | // The above copyright notice and this permission notice shall be included in all copies or |
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10 | // substantial portions of the Software. |
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11 | // |
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12 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
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13 | // INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR |
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14 | // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE |
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15 | // FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
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16 | // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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17 | // DEALINGS IN THE SOFTWARE. |
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18 | |
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19 | using System; |
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20 | using System.Collections.Generic; |
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21 | using System.Globalization; |
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22 | using System.Linq; |
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23 | using ICSharpCode.NRefactory.Utils; |
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24 | |
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25 | namespace ICSharpCode.NRefactory.TypeSystem.Implementation |
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26 | { |
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27 | /// <summary> |
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28 | /// A merged namespace. |
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29 | /// </summary> |
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30 | public sealed class MergedNamespace : INamespace |
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31 | { |
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32 | readonly string externAlias; |
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33 | readonly ICompilation compilation; |
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34 | readonly INamespace parentNamespace; |
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35 | readonly INamespace[] namespaces; |
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36 | Dictionary<string, INamespace> childNamespaces; |
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37 | |
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38 | /// <summary> |
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39 | /// Creates a new merged root namespace. |
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40 | /// </summary> |
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41 | /// <param name="compilation">The main compilation.</param> |
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42 | /// <param name="namespaces">The individual namespaces being merged.</param> |
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43 | /// <param name="externAlias">The extern alias for this namespace.</param> |
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44 | public MergedNamespace(ICompilation compilation, INamespace[] namespaces, string externAlias = null) |
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45 | { |
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46 | if (compilation == null) |
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47 | throw new ArgumentNullException("compilation"); |
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48 | if (namespaces == null) |
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49 | throw new ArgumentNullException("namespaces"); |
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50 | this.compilation = compilation; |
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51 | this.namespaces = namespaces; |
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52 | this.externAlias = externAlias; |
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53 | } |
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54 | |
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55 | /// <summary> |
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56 | /// Creates a new merged child namespace. |
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57 | /// </summary> |
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58 | /// <param name="parentNamespace">The parent merged namespace.</param> |
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59 | /// <param name="namespaces">The individual namespaces being merged.</param> |
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60 | public MergedNamespace(INamespace parentNamespace, INamespace[] namespaces) |
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61 | { |
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62 | if (parentNamespace == null) |
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63 | throw new ArgumentNullException("parentNamespace"); |
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64 | if (namespaces == null) |
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65 | throw new ArgumentNullException("namespaces"); |
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66 | this.parentNamespace = parentNamespace; |
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67 | this.namespaces = namespaces; |
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68 | this.compilation = parentNamespace.Compilation; |
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69 | this.externAlias = parentNamespace.ExternAlias; |
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70 | } |
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71 | |
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72 | public string ExternAlias { |
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73 | get { return externAlias; } |
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74 | } |
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75 | |
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76 | public string FullName { |
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77 | get { return namespaces[0].FullName; } |
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78 | } |
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79 | |
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80 | public string Name { |
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81 | get { return namespaces[0].Name; } |
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82 | } |
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83 | |
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84 | public INamespace ParentNamespace { |
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85 | get { return parentNamespace; } |
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86 | } |
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87 | |
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88 | public IEnumerable<ITypeDefinition> Types { |
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89 | get { |
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90 | return namespaces.SelectMany(ns => ns.Types); |
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91 | } |
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92 | } |
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93 | |
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94 | public SymbolKind SymbolKind { |
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95 | get { return SymbolKind.Namespace; } |
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96 | } |
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97 | |
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98 | public ICompilation Compilation { |
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99 | get { return compilation; } |
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100 | } |
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101 | |
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102 | public IEnumerable<IAssembly> ContributingAssemblies { |
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103 | get { return namespaces.SelectMany(ns => ns.ContributingAssemblies); } |
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104 | } |
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105 | |
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106 | public IEnumerable<INamespace> ChildNamespaces { |
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107 | get { return GetChildNamespaces().Values; } |
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108 | } |
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109 | |
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110 | public INamespace GetChildNamespace(string name) |
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111 | { |
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112 | INamespace ns; |
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113 | if (GetChildNamespaces().TryGetValue(name, out ns)) |
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114 | return ns; |
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115 | else |
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116 | return null; |
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117 | } |
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118 | |
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119 | Dictionary<string, INamespace> GetChildNamespaces() |
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120 | { |
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121 | var result = LazyInit.VolatileRead(ref this.childNamespaces); |
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122 | if (result != null) { |
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123 | return result; |
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124 | } else { |
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125 | result = new Dictionary<string, INamespace>(compilation.NameComparer); |
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126 | foreach (var g in namespaces.SelectMany(ns => ns.ChildNamespaces).GroupBy(ns => ns.Name, compilation.NameComparer)) { |
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127 | result.Add(g.Key, new MergedNamespace(this, g.ToArray())); |
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128 | } |
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129 | return LazyInit.GetOrSet(ref this.childNamespaces, result); |
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130 | } |
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131 | } |
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132 | |
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133 | public ITypeDefinition GetTypeDefinition(string name, int typeParameterCount) |
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134 | { |
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135 | ITypeDefinition anyTypeDef = null; |
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136 | foreach (var ns in namespaces) { |
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137 | ITypeDefinition typeDef = ns.GetTypeDefinition(name, typeParameterCount); |
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138 | if (typeDef != null) { |
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139 | if (typeDef.IsPublic) { |
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140 | // Prefer accessible types over non-accessible types. |
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141 | return typeDef; |
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142 | // || (typeDef.IsInternal && typeDef.ParentAssembly.InternalsVisibleTo(...)) |
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143 | // We can't call InternalsVisibleTo() here as we don't know the correct 'current' assembly, |
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144 | // and using the main assembly can cause a stack overflow if there |
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145 | // are internal assembly attributes. |
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146 | } |
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147 | anyTypeDef = typeDef; |
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148 | } |
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149 | } |
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150 | return anyTypeDef; |
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151 | } |
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152 | |
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153 | public override string ToString() |
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154 | { |
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155 | return string.Format(CultureInfo.InvariantCulture, "[MergedNamespace {0}{1} (from {2} assemblies)]", |
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156 | externAlias != null ? externAlias + "::" : null, this.FullName, this.namespaces.Length); |
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157 | } |
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158 | |
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159 | public ISymbolReference ToReference() |
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160 | { |
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161 | return new MergedNamespaceReference(externAlias, FullName); |
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162 | } |
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163 | } |
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164 | } |
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