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 | |
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21 | namespace ICSharpCode.NRefactory.TypeSystem.Implementation |
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22 | { |
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23 | /// <summary> |
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24 | /// Type reference used to reference nested types. |
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25 | /// </summary> |
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26 | [Serializable] |
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27 | public sealed class NestedTypeReference : ITypeReference, ISymbolReference, ISupportsInterning |
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28 | { |
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29 | readonly ITypeReference declaringTypeRef; |
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30 | readonly string name; |
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31 | readonly int additionalTypeParameterCount; |
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32 | |
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33 | /// <summary> |
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34 | /// Creates a new NestedTypeReference. |
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35 | /// </summary> |
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36 | /// <param name="declaringTypeRef">Reference to the declaring type.</param> |
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37 | /// <param name="name">Name of the nested class</param> |
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38 | /// <param name="additionalTypeParameterCount">Number of type parameters on the inner class (without type parameters on baseTypeRef)</param> |
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39 | /// <remarks> |
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40 | /// <paramref name="declaringTypeRef"/> must be exactly the (unbound) declaring type, not a derived type, not a parameterized type. |
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41 | /// NestedTypeReference thus always resolves to a type definition, never to (partially) parameterized types. |
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42 | /// </remarks> |
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43 | public NestedTypeReference(ITypeReference declaringTypeRef, string name, int additionalTypeParameterCount) |
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44 | { |
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45 | if (declaringTypeRef == null) |
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46 | throw new ArgumentNullException("declaringTypeRef"); |
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47 | if (name == null) |
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48 | throw new ArgumentNullException("name"); |
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49 | this.declaringTypeRef = declaringTypeRef; |
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50 | this.name = name; |
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51 | this.additionalTypeParameterCount = additionalTypeParameterCount; |
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52 | } |
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53 | |
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54 | public ITypeReference DeclaringTypeReference { |
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55 | get { return declaringTypeRef; } |
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56 | } |
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57 | |
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58 | public string Name { |
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59 | get { return name; } |
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60 | } |
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61 | |
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62 | public int AdditionalTypeParameterCount { |
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63 | get { return additionalTypeParameterCount; } |
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64 | } |
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65 | |
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66 | public IType Resolve(ITypeResolveContext context) |
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67 | { |
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68 | ITypeDefinition declaringType = declaringTypeRef.Resolve(context) as ITypeDefinition; |
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69 | if (declaringType != null) { |
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70 | int tpc = declaringType.TypeParameterCount; |
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71 | foreach (IType type in declaringType.NestedTypes) { |
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72 | if (type.Name == name && type.TypeParameterCount == tpc + additionalTypeParameterCount) |
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73 | return type; |
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74 | } |
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75 | } |
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76 | return new UnknownType(null, name, additionalTypeParameterCount); |
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77 | } |
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78 | |
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79 | ISymbol ISymbolReference.Resolve(ITypeResolveContext context) |
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80 | { |
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81 | var type = Resolve(context); |
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82 | if (type is ITypeDefinition) |
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83 | return (ISymbol)type; |
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84 | return null; |
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85 | } |
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86 | |
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87 | public override string ToString() |
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88 | { |
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89 | if (additionalTypeParameterCount == 0) |
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90 | return declaringTypeRef + "+" + name; |
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91 | else |
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92 | return declaringTypeRef + "+" + name + "`" + additionalTypeParameterCount; |
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93 | } |
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94 | |
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95 | int ISupportsInterning.GetHashCodeForInterning() |
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96 | { |
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97 | return declaringTypeRef.GetHashCode() ^ name.GetHashCode() ^ additionalTypeParameterCount; |
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98 | } |
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99 | |
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100 | bool ISupportsInterning.EqualsForInterning(ISupportsInterning other) |
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101 | { |
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102 | NestedTypeReference o = other as NestedTypeReference; |
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103 | return o != null && declaringTypeRef == o.declaringTypeRef && name == o.name && additionalTypeParameterCount == o.additionalTypeParameterCount; |
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104 | } |
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105 | } |
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106 | } |
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