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+// Copyright (c) 2011 AlphaSierraPapa for the SharpDevelop Team
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System;
+using System.Linq;
+using System.Reflection;
+using ICSharpCode.NRefactory.CSharp;
+using ICSharpCode.NRefactory.PatternMatching;
+using Mono.Cecil;
+
+namespace ICSharpCode.Decompiler.Ast.Transforms
+{
+ internal sealed class TypePattern : Pattern
+ {
+ readonly string ns;
+ readonly string name;
+
+ public TypePattern(Type type)
+ {
+ ns = type.Namespace;
+ name = type.Name;
+ }
+
+ public override bool DoMatch(INode other, Match match)
+ {
+ ComposedType ct = other as ComposedType;
+ AstType o;
+ if (ct != null && !ct.HasNullableSpecifier && ct.PointerRank == 0 && !ct.ArraySpecifiers.Any()) {
+ // Special case: ILSpy sometimes produces a ComposedType but then removed all array specifiers
+ // from it. In that case, we need to look at the base type for the annotations.
+ o = ct.BaseType;
+ } else {
+ o = other as AstType;
+ if (o == null)
+ return false;
+ }
+ TypeReference tr = o.Annotation<TypeReference>();
+ return tr != null && tr.Namespace == ns && tr.Name == name;
+ }
+
+ public override string ToString()
+ {
+ return name;
+ }
+ }
+
+ internal sealed class LdTokenPattern : Pattern
+ {
+ AnyNode childNode;
+
+ public LdTokenPattern(string groupName)
+ {
+ childNode = new AnyNode(groupName);
+ }
+
+ public override bool DoMatch(INode other, Match match)
+ {
+ InvocationExpression ie = other as InvocationExpression;
+ if (ie != null && ie.Annotation<LdTokenAnnotation>() != null && ie.Arguments.Count == 1) {
+ return childNode.DoMatch(ie.Arguments.Single(), match);
+ }
+ return false;
+ }
+
+ public override string ToString()
+ {
+ return "ldtoken(...)";
+ }
+ }
+
+ /// <summary>
+ /// typeof-Pattern that applies on the expanded form of typeof (prior to ReplaceMethodCallsWithOperators)
+ /// </summary>
+ internal sealed class TypeOfPattern : Pattern
+ {
+ INode childNode;
+
+ public TypeOfPattern(string groupName)
+ {
+ childNode = new TypePattern(typeof(Type)).ToType().Invoke(
+ "GetTypeFromHandle", new TypeOfExpression(new AnyNode(groupName)).Member("TypeHandle"));
+ }
+
+ public override bool DoMatch(INode other, Match match)
+ {
+ return childNode.DoMatch(other, match);
+ }
+
+ public override string ToString()
+ {
+ return "typeof(...)";
+ }
+ }
+}