C# TypeParameterMutator.Mutate方法代碼示例

		//
		// Creates a proxy base method call inside this container for hoisted base member calls
		//
		public MethodSpec CreateHoistedBaseCallProxy (ResolveContext rc, MethodSpec method)
		{
			Method proxy_method;

			//
			// One proxy per base method is enough
			//
			if (hoisted_base_call_proxies == null) {
				hoisted_base_call_proxies = new Dictionary<MethodSpec, Method> ();
				proxy_method = null;
			} else {
				hoisted_base_call_proxies.TryGetValue (method, out proxy_method);
			}

			if (proxy_method == null) {
				string name = CompilerGeneratedContainer.MakeName (method.Name, null, "BaseCallProxy", hoisted_base_call_proxies.Count);

				MemberName member_name;
				TypeArguments targs = null;
				TypeSpec return_type = method.ReturnType;
				var local_param_types = method.Parameters.Types;

				if (method.IsGeneric) {
					//
					// Copy all base generic method type parameters info
					//
					var hoisted_tparams = method.GenericDefinition.TypeParameters;
					var tparams = new TypeParameters ();

					targs = new TypeArguments ();
					targs.Arguments = new TypeSpec[hoisted_tparams.Length];
					for (int i = 0; i < hoisted_tparams.Length; ++i) {
						var tp = hoisted_tparams[i];
						var local_tp = new TypeParameter (tp, null, new MemberName (tp.Name, Location), null);
						tparams.Add (local_tp);

						targs.Add (new SimpleName (tp.Name, Location));
						targs.Arguments[i] = local_tp.Type;
					}

					member_name = new MemberName (name, tparams, Location);

					//
					// Mutate any method type parameters from original
					// to newly created hoisted version
					//
					var mutator = new TypeParameterMutator (hoisted_tparams, tparams);
					return_type = mutator.Mutate (return_type);
					local_param_types = mutator.Mutate (local_param_types);
				} else {
					member_name = new MemberName (name);
				}

				var base_parameters = new Parameter[method.Parameters.Count];
				for (int i = 0; i < base_parameters.Length; ++i) {
					var base_param = method.Parameters.FixedParameters[i];
					base_parameters[i] = new Parameter (new TypeExpression (local_param_types [i], Location),
						base_param.Name, base_param.ModFlags, null, Location);
					base_parameters[i].Resolve (this, i);
				}

				var cloned_params = ParametersCompiled.CreateFullyResolved (base_parameters, method.Parameters.Types);
				if (method.Parameters.HasArglist) {
					cloned_params.FixedParameters[0] = new Parameter (null, "__arglist", Parameter.Modifier.NONE, null, Location);
					cloned_params.Types[0] = Module.PredefinedTypes.RuntimeArgumentHandle.Resolve ();
				}

				// Compiler generated proxy
				proxy_method = new Method (this, new TypeExpression (return_type, Location),
					Modifiers.PRIVATE | Modifiers.COMPILER_GENERATED | Modifiers.DEBUGGER_HIDDEN,
					member_name, cloned_params, null);

				var block = new ToplevelBlock (Compiler, proxy_method.ParameterInfo, Location) {
					IsCompilerGenerated = true
				};

				var mg = MethodGroupExpr.CreatePredefined (method, method.DeclaringType, Location);
				mg.InstanceExpression = new BaseThis (method.DeclaringType, Location);
				if (targs != null)
					mg.SetTypeArguments (rc, targs);

				// Get all the method parameters and pass them as arguments
				var real_base_call = new Invocation (mg, block.GetAllParametersArguments ());
				Statement statement;
				if (method.ReturnType.Kind == MemberKind.Void)
					statement = new StatementExpression (real_base_call);
				else
					statement = new Return (real_base_call, Location);

				block.AddStatement (statement);
				proxy_method.Block = block;

				members.Add (proxy_method);
				proxy_method.Define ();
				proxy_method.PrepareEmit ();

				hoisted_base_call_proxies.Add (method, proxy_method);
//.........這裏部分代碼省略.........

		public FieldSpec Mutate (TypeParameterMutator mutator)
		{
			var decl = DeclaringType;
			if (DeclaringType.IsGenericOrParentIsGeneric)
				decl = mutator.Mutate (decl);

			if (decl == DeclaringType)
				return this;

			var fs = (FieldSpec) MemberwiseClone ();
			fs.declaringType = decl;
			fs.state |= StateFlags.PendingMetaInflate;

			// Gets back FieldInfo in case of metaInfo was inflated
			fs.metaInfo = MemberCache.GetMember (TypeParameterMutator.GetMemberDeclaringType (DeclaringType), this).metaInfo;
			return fs;
		}

		public MethodSpec Mutate (TypeParameterMutator mutator)
		{
			var targs = TypeArguments;
			if (targs != null)
				targs = mutator.Mutate (targs);

			var decl = DeclaringType;
			if (DeclaringType.IsGenericOrParentIsGeneric) {
				decl = mutator.Mutate (decl);
			}

			if (targs == TypeArguments && decl == DeclaringType)
				return this;

			var ms = (MethodSpec) MemberwiseClone ();
			if (decl != DeclaringType) {
				ms.inflatedMetaInfo = null;
				ms.declaringType = decl;
				ms.state |= StateFlags.PendingMetaInflate;
			}

			if (targs != null) {
				ms.targs = targs;
				ms.state |= StateFlags.PendingMakeMethod;
			}

			return ms;
		}

		public MethodSpec Mutate (TypeParameterMutator mutator)
		{
			var targs = TypeArguments;
			if (targs != null)
				targs = mutator.Mutate (targs);

			var decl = DeclaringType;
			if (DeclaringType.IsGenericOrParentIsGeneric) {
				decl = mutator.Mutate (decl);
			}

			if (targs == TypeArguments && decl == DeclaringType)
				return this;

			var ms = (MethodSpec) MemberwiseClone ();
			if (decl != DeclaringType) {
				// Gets back MethodInfo in case of metaInfo was inflated
				ms.metaInfo = MemberCache.GetMember (TypeParameterMutator.GetMemberDeclaringType (DeclaringType), this).metaInfo;

				ms.declaringType = decl;
				ms.state |= StateFlags.PendingMetaInflate;
			}

			if (targs != null) {
				ms.targs = targs;
				ms.state |= StateFlags.PendingMakeMethod;
			}

			return ms;
		}

		public override TypeSpec Mutate (TypeParameterMutator mutator)
		{
			var targs = TypeArguments;
			if (targs != null)
				targs = mutator.Mutate (targs);

			var decl = DeclaringType;
			if (IsNested && DeclaringType.IsGenericOrParentIsGeneric)
				decl = mutator.Mutate (decl);

			if (targs == TypeArguments && decl == DeclaringType)
				return this;

			var mutated = (InflatedTypeSpec) MemberwiseClone ();
			if (decl != DeclaringType) {
				// Gets back MethodInfo in case of metaInfo was inflated
				//mutated.info = MemberCache.GetMember<TypeSpec> (DeclaringType.GetDefinition (), this).info;

				mutated.declaringType = decl;
				mutated.state |= StateFlags.PendingMetaInflate;
			}

			if (targs != null) {
				mutated.targs = targs;
				mutated.info = null;
			}

			return mutated;
		}