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 ICSharpCode.NRefactory.Utils; |
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21 | |
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22 | namespace ICSharpCode.NRefactory.TypeSystem.Implementation |
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23 | { |
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24 | /// <summary> |
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25 | /// Cache for KnownTypeReferences. |
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26 | /// </summary> |
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27 | sealed class KnownTypeCache |
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28 | { |
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29 | readonly ICompilation compilation; |
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30 | readonly IType[] knownTypes = new IType[KnownTypeReference.KnownTypeCodeCount]; |
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31 | |
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32 | public KnownTypeCache(ICompilation compilation) |
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33 | { |
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34 | this.compilation = compilation; |
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35 | } |
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36 | |
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37 | public IType FindType(KnownTypeCode typeCode) |
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38 | { |
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39 | IType type = LazyInit.VolatileRead(ref knownTypes[(int)typeCode]); |
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40 | if (type != null) { |
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41 | return type; |
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42 | } |
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43 | return LazyInit.GetOrSet(ref knownTypes[(int)typeCode], SearchType(typeCode)); |
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44 | } |
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45 | |
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46 | IType SearchType(KnownTypeCode typeCode) |
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47 | { |
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48 | KnownTypeReference typeRef = KnownTypeReference.Get(typeCode); |
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49 | if (typeRef == null) |
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50 | return SpecialType.UnknownType; |
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51 | var typeName = new TopLevelTypeName(typeRef.Namespace, typeRef.Name, typeRef.TypeParameterCount); |
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52 | foreach (IAssembly asm in compilation.Assemblies) { |
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53 | var typeDef = asm.GetTypeDefinition(typeName); |
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54 | if (typeDef != null) |
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55 | return typeDef; |
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56 | } |
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57 | return new UnknownType(typeName); |
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58 | } |
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59 | } |
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60 | } |
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