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.Linq; |
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21 | using System.Threading; |
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22 | |
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23 | namespace ICSharpCode.NRefactory.TypeSystem.Implementation |
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24 | { |
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25 | /// <summary> |
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26 | /// Type Reference used when the fully qualified type name is known. |
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27 | /// </summary> |
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28 | [Serializable] |
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29 | public sealed class GetClassTypeReference : ITypeReference, ISymbolReference, ISupportsInterning |
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30 | { |
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31 | readonly IAssemblyReference assembly; |
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32 | readonly FullTypeName fullTypeName; |
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33 | |
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34 | /// <summary> |
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35 | /// Creates a new GetClassTypeReference that searches a type definition. |
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36 | /// </summary> |
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37 | /// <param name="fullTypeName">The full name of the type.</param> |
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38 | /// <param name="assembly">A reference to the assembly containing this type. |
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39 | /// If this parameter is null, the GetClassTypeReference will search in all |
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40 | /// assemblies belonging to the compilation. |
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41 | /// </param> |
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42 | public GetClassTypeReference(FullTypeName fullTypeName, IAssemblyReference assembly = null) |
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43 | { |
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44 | this.fullTypeName = fullTypeName; |
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45 | this.assembly = assembly; |
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46 | } |
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47 | |
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48 | /// <summary> |
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49 | /// Creates a new GetClassTypeReference that searches a top-level type in all assemblies. |
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50 | /// </summary> |
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51 | /// <param name="namespaceName">The namespace name containing the type, e.g. "System.Collections.Generic".</param> |
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52 | /// <param name="name">The name of the type, e.g. "List".</param> |
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53 | /// <param name="typeParameterCount">The number of type parameters, (e.g. 1 for List<T>).</param> |
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54 | public GetClassTypeReference(string namespaceName, string name, int typeParameterCount = 0) |
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55 | { |
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56 | this.fullTypeName = new TopLevelTypeName(namespaceName, name, typeParameterCount); |
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57 | } |
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58 | |
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59 | /// <summary> |
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60 | /// Creates a new GetClassTypeReference that searches a top-level type in the specified assembly. |
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61 | /// </summary> |
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62 | /// <param name="assembly">A reference to the assembly containing this type. |
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63 | /// If this parameter is null, the GetClassTypeReference will search in all assemblies belonging to the ICompilation.</param> |
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64 | /// <param name="namespaceName">The namespace name containing the type, e.g. "System.Collections.Generic".</param> |
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65 | /// <param name="name">The name of the type, e.g. "List".</param> |
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66 | /// <param name="typeParameterCount">The number of type parameters, (e.g. 1 for List<T>).</param> |
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67 | public GetClassTypeReference(IAssemblyReference assembly, string namespaceName, string name, int typeParameterCount = 0) |
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68 | { |
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69 | this.assembly = assembly; |
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70 | this.fullTypeName = new TopLevelTypeName(namespaceName, name, typeParameterCount); |
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71 | } |
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72 | |
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73 | /// <summary> |
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74 | /// Gets the assembly reference. |
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75 | /// This property returns null if the GetClassTypeReference is searching in all assemblies |
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76 | /// of the compilation. |
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77 | /// </summary> |
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78 | public IAssemblyReference Assembly { get { return assembly; } } |
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79 | |
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80 | /// <summary> |
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81 | /// Gets the full name of the type this reference is searching for. |
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82 | /// </summary> |
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83 | public FullTypeName FullTypeName { get { return fullTypeName; } } |
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84 | |
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85 | [Obsolete("Use the FullTypeName property instead. GetClassTypeReference now supports nested types, where the Namespace/Name/TPC tripel isn't sufficient for identifying the type.")] |
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86 | public string Namespace { get { return fullTypeName.TopLevelTypeName.Namespace; } } |
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87 | [Obsolete("Use the FullTypeName property instead. GetClassTypeReference now supports nested types, where the Namespace/Name/TPC tripel isn't sufficient for identifying the type.")] |
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88 | public string Name { get { return fullTypeName.Name; } } |
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89 | [Obsolete("Use the FullTypeName property instead. GetClassTypeReference now supports nested types, where the Namespace/Name/TPC tripel isn't sufficient for identifying the type.")] |
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90 | public int TypeParameterCount { get { return fullTypeName.TypeParameterCount; } } |
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91 | |
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92 | IType ResolveInAllAssemblies(ITypeResolveContext context) |
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93 | { |
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94 | var compilation = context.Compilation; |
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95 | foreach (var asm in compilation.Assemblies) { |
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96 | IType type = asm.GetTypeDefinition(fullTypeName); |
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97 | if (type != null) |
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98 | return type; |
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99 | } |
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100 | return null; |
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101 | } |
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102 | |
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103 | public IType Resolve(ITypeResolveContext context) |
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104 | { |
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105 | if (context == null) |
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106 | throw new ArgumentNullException("context"); |
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107 | |
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108 | IType type = null; |
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109 | if (assembly == null) { |
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110 | // No assembly specified: look in all assemblies, but prefer the current assembly |
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111 | if (context.CurrentAssembly != null) { |
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112 | type = context.CurrentAssembly.GetTypeDefinition(fullTypeName); |
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113 | } |
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114 | if (type == null) { |
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115 | type = ResolveInAllAssemblies(context); |
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116 | } |
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117 | } else { |
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118 | // Assembly specified: only look in the specified assembly. |
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119 | // But if that's not loaded in the compilation, allow fall back to other assemblies. |
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120 | // (the non-loaded assembly might be a facade containing type forwarders - |
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121 | // for example, when referencing a portable library from a non-portable project) |
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122 | IAssembly asm = assembly.Resolve(context); |
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123 | if (asm != null) { |
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124 | type = asm.GetTypeDefinition(fullTypeName); |
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125 | } else { |
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126 | type = ResolveInAllAssemblies(context); |
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127 | } |
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128 | } |
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129 | return type ?? new UnknownType(fullTypeName); |
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130 | } |
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131 | |
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132 | ISymbol ISymbolReference.Resolve(ITypeResolveContext context) |
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133 | { |
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134 | var type = Resolve(context); |
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135 | if (type is ITypeDefinition) |
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136 | return (ISymbol)type; |
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137 | return null; |
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138 | } |
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139 | |
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140 | public override string ToString() |
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141 | { |
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142 | return fullTypeName.ToString() + (assembly != null ? ", " + assembly.ToString() : null); |
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143 | } |
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144 | |
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145 | int ISupportsInterning.GetHashCodeForInterning() |
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146 | { |
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147 | unchecked { |
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148 | return 33 * assembly.GetHashCode() + fullTypeName.GetHashCode(); |
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149 | } |
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150 | } |
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151 | |
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152 | bool ISupportsInterning.EqualsForInterning(ISupportsInterning other) |
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153 | { |
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154 | GetClassTypeReference o = other as GetClassTypeReference; |
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155 | return o != null && assembly == o.assembly && fullTypeName == o.fullTypeName; |
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156 | } |
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157 | } |
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158 | } |
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