C# CallArguments.GetCallSiteArguments方法代码示例

        // Only used if method_missing() is called directly on the main singleton.
        internal override void BuildCallNoFlow(MetaObjectBuilder/*!*/ metaBuilder, CallArguments/*!*/ args, string/*!*/ name) {
            var globalScope = args.TargetClass.GlobalScope;

            // TODO: this just calls super for now, so it doesn't look up the scope:
            metaBuilder.Result = AstUtils.LightDynamic(
                new RubyCallAction(globalScope.Context, Symbols.MethodMissing,
                    new RubyCallSignature(
                        args.Signature.ArgumentCount,
                        args.Signature.Flags | RubyCallFlags.HasImplicitSelf | RubyCallFlags.IsSuperCall
                    )
                ),
                typeof(object),
                args.GetCallSiteArguments(args.TargetExpression)
            );
        }

        internal override void BuildMethodMissingCallNoFlow(MetaObjectBuilder/*!*/ metaBuilder, CallArguments/*!*/ args, string/*!*/ name) {
            var globalScope = args.TargetClass.GlobalScope;
            var context = globalScope.Context;

            if (name.LastCharacter() == '=') {
                var normalizedArgs = RubyOverloadResolver.NormalizeArguments(metaBuilder, args, 1, 1);
                if (!metaBuilder.Error) {
                    var scopeVar = metaBuilder.GetTemporary(typeof(Scope), "#scope");

                    metaBuilder.AddInitialization(
                        Ast.Assign(scopeVar, Methods.GetGlobalScopeFromScope.OpCall(AstUtils.Convert(args.MetaScope.Expression, typeof(RubyScope))))
                    );

                    var interopSetter = context.MetaBinderFactory.InteropSetMember(name.Substring(0, name.Length - 1));

                    metaBuilder.SetMetaResult(
                        interopSetter.Bind(
                            new DynamicMetaObject(
                                scopeVar,
                                BindingRestrictions.Empty,
                                globalScope.Scope
                            ),
                            new[] { normalizedArgs[0] }
                        ),
                        true
                    );
                }
            } else {
                RubyOverloadResolver.NormalizeArguments(metaBuilder, args, 0, 0);
                Expression errorExpr =  metaBuilder.Error ? Ast.Throw(metaBuilder.Result, typeof(object)) : null;

                var scopeVar = metaBuilder.GetTemporary(typeof(Scope), "#scope");
                var scopeLookupResultVar = metaBuilder.GetTemporary(typeof(object), "#result");
                
                metaBuilder.AddInitialization(
                    Ast.Assign(scopeVar, Methods.GetGlobalScopeFromScope.OpCall(AstUtils.Convert(args.MetaScope.Expression, typeof(RubyScope))))
                );

                Expression scopeLookupResultExpr = errorExpr ?? scopeLookupResultVar;
                Expression fallbackExp;

                if (name == "scope") {
                    fallbackExp = errorExpr ?? args.TargetExpression;
                } else {
                    // super(methodName, ...args...) - ignore argument error:
                    args.InsertMethodName(name);
                    fallbackExp = AstUtils.LightDynamic(
                        context.MetaBinderFactory.Call(Symbols.MethodMissing, 
                            new RubyCallSignature(
                                args.Signature.ArgumentCount + 1,
                                args.Signature.Flags | RubyCallFlags.HasImplicitSelf | RubyCallFlags.IsSuperCall
                            )
                        ),
                        typeof(object),
                        args.GetCallSiteArguments(args.TargetExpression)
                    );
                }

                var scopeLookup = Ast.NotEqual(
                    Ast.Assign(scopeLookupResultVar, AstUtils.LightDynamic(RubyMetaBinderFactory.InteropTryGetMemberExact(name), typeof(object), scopeVar)),
                    Expression.Constant(OperationFailed.Value)
                );

                string unmanagled = RubyUtils.TryUnmangleMethodName(name);
                if (unmanagled != null) {
                    scopeLookup = Ast.OrElse(
                        scopeLookup,
                        Ast.NotEqual(
                            Ast.Assign(scopeLookupResultVar, AstUtils.LightDynamic(RubyMetaBinderFactory.InteropTryGetMemberExact(unmanagled), typeof(object), scopeVar)),
                            Expression.Constant(OperationFailed.Value)
                        )
                    );
                }

                metaBuilder.Result = Ast.Condition(
                    scopeLookup,
                    scopeLookupResultExpr,
                    fallbackExp
                );
            }
        }

        private static void BuildOverriddenInitializerCall(MetaObjectBuilder/*!*/ metaBuilder, CallArguments/*!*/ args, RubyMemberInfo/*!*/ initializer) {
            var instanceExpr = metaBuilder.Result;
            metaBuilder.Result = null;

            var instanceVariable = metaBuilder.GetTemporary(instanceExpr.Type, "#instance");

            // We know an exact type of the new instance and that there is no singleton for that instance.
            // We also have the exact method we need to call ("initialize" is a RubyMethodInfo/RubyLambdaMethodInfo).
            // => no tests are necessary:
            args.SetTarget(instanceVariable, null);

            if (initializer is RubyMethodInfo || initializer is RubyLambdaMethodInfo) {
                initializer.BuildCallNoFlow(metaBuilder, args, Symbols.Initialize);
            } else {
                // TODO: we need more refactoring of RubyMethodGroupInfo.BuildCall to be able to inline this:
                metaBuilder.Result = AstUtils.LightDynamic(
                    RubyCallAction.Make(args.RubyContext, "initialize",
                        new RubyCallSignature(
                            args.Signature.ArgumentCount, 
                            (args.Signature.Flags & ~RubyCallFlags.IsInteropCall) | RubyCallFlags.HasImplicitSelf
                        )
                    ),
                    args.GetCallSiteArguments(instanceVariable)
                );
            }

            if (!metaBuilder.Error) {
                // PropagateRetrySingleton(instance = new <type>(), instance.initialize(<args>))
                metaBuilder.Result = Methods.PropagateRetrySingleton.OpCall(
                    Ast.Assign(instanceVariable, instanceExpr),
                    metaBuilder.Result
                );

                // we need to handle break, which unwinds to a proc-converter that could be this method's frame:
                if (args.Signature.HasBlock) {
                    metaBuilder.ControlFlowBuilder = RubyMethodInfo.RuleControlFlowBuilder;
                }
            }
        }