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.Linq; |
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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 | /// References an entity by its type and name. |
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27 | /// This class can be used to refer to all members except for constructors and explicit interface implementations. |
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28 | /// </summary> |
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29 | /// <remarks> |
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30 | /// Resolving a DefaultMemberReference requires a context that provides enough information for resolving the declaring type reference |
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31 | /// and the parameter types references. |
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32 | /// </remarks> |
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33 | [Serializable] |
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34 | public sealed class DefaultMemberReference : IMemberReference, ISupportsInterning |
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35 | { |
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36 | readonly SymbolKind symbolKind; |
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37 | readonly ITypeReference typeReference; |
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38 | readonly string name; |
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39 | readonly int typeParameterCount; |
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40 | readonly IList<ITypeReference> parameterTypes; |
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41 | |
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42 | public DefaultMemberReference(SymbolKind symbolKind, ITypeReference typeReference, string name, int typeParameterCount = 0, IList<ITypeReference> parameterTypes = null) |
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43 | { |
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44 | if (typeReference == null) |
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45 | throw new ArgumentNullException("typeReference"); |
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46 | if (name == null) |
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47 | throw new ArgumentNullException("name"); |
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48 | if (typeParameterCount != 0 && symbolKind != SymbolKind.Method) |
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49 | throw new ArgumentException("Type parameter count > 0 is only supported for methods."); |
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50 | this.symbolKind = symbolKind; |
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51 | this.typeReference = typeReference; |
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52 | this.name = name; |
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53 | this.typeParameterCount = typeParameterCount; |
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54 | this.parameterTypes = parameterTypes ?? EmptyList<ITypeReference>.Instance; |
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55 | } |
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56 | |
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57 | public ITypeReference DeclaringTypeReference { |
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58 | get { return typeReference; } |
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59 | } |
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60 | |
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61 | public IMember Resolve(ITypeResolveContext context) |
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62 | { |
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63 | IType type = typeReference.Resolve(context); |
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64 | IEnumerable<IMember> members; |
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65 | if (symbolKind == SymbolKind.Accessor) { |
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66 | members = type.GetAccessors( |
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67 | m => m.Name == name && !m.IsExplicitInterfaceImplementation, |
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68 | GetMemberOptions.IgnoreInheritedMembers); |
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69 | } else if (symbolKind == SymbolKind.Method) { |
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70 | members = type.GetMethods( |
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71 | m => m.Name == name && m.SymbolKind == SymbolKind.Method |
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72 | && m.TypeParameters.Count == typeParameterCount && !m.IsExplicitInterfaceImplementation, |
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73 | GetMemberOptions.IgnoreInheritedMembers); |
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74 | } else { |
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75 | members = type.GetMembers( |
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76 | m => m.Name == name && m.SymbolKind == symbolKind && !m.IsExplicitInterfaceImplementation, |
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77 | GetMemberOptions.IgnoreInheritedMembers); |
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78 | } |
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79 | var resolvedParameterTypes = parameterTypes.Resolve(context); |
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80 | foreach (IMember member in members) { |
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81 | IParameterizedMember parameterizedMember = member as IParameterizedMember; |
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82 | if (parameterizedMember == null) { |
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83 | if (parameterTypes.Count == 0) |
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84 | return member; |
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85 | } else if (parameterTypes.Count == parameterizedMember.Parameters.Count) { |
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86 | bool signatureMatches = true; |
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87 | for (int i = 0; i < parameterTypes.Count; i++) { |
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88 | IType type1 = DummyTypeParameter.NormalizeAllTypeParameters(resolvedParameterTypes[i]); |
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89 | IType type2 = DummyTypeParameter.NormalizeAllTypeParameters(parameterizedMember.Parameters[i].Type); |
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90 | if (!type1.Equals(type2)) { |
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91 | signatureMatches = false; |
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92 | break; |
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93 | } |
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94 | } |
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95 | if (signatureMatches) |
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96 | return member; |
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97 | } |
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98 | } |
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99 | return null; |
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100 | } |
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101 | |
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102 | ISymbol ISymbolReference.Resolve(ITypeResolveContext context) |
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103 | { |
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104 | return ((IMemberReference)this).Resolve(context); |
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105 | } |
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106 | |
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107 | int ISupportsInterning.GetHashCodeForInterning() |
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108 | { |
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109 | return (int)symbolKind ^ typeReference.GetHashCode() ^ name.GetHashCode() ^ parameterTypes.GetHashCode(); |
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110 | } |
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111 | |
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112 | bool ISupportsInterning.EqualsForInterning(ISupportsInterning other) |
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113 | { |
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114 | DefaultMemberReference o = other as DefaultMemberReference; |
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115 | return o != null && symbolKind == o.symbolKind && typeReference == o.typeReference && name == o.name && parameterTypes == o.parameterTypes; |
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116 | } |
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117 | } |
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118 | } |
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