Inazuma.PetitClr.Core.PetitClrInterpreter.ExecuteMethod C# (CSharp) Метод

        private void ExecuteMethod(out ObjectInstance retVal, out bool doJmpCall, out MemberReference jmpCallToken)
        {
            jmpCallToken = null;
            doJmpCall = false;
            retVal = null;

            EvalLoop:
            try
            {
                this.ExecuteMethodCore(out retVal, out doJmpCall, out jmpCallToken);
            }
            catch (InazumaRuntimeException ex)
            {
                // TODO: check throwable
                // TODO: isuncatchable (ThreadAbort)
                var handleEx = false;

                if (_methInfo2.Body.HasExceptionHandlers)
                {
                    var curOffset = _instructions[_instructionPtr].Offset;

                    // Perform a filter scan or regular walk of the EH Table. Filter scan is performed when
                    // we are evaluating a series of filters to handle the exception until the first handler
                    // (filter's or otherwise) that will handle the exception.
                    foreach (var exceptionHandler in _methInfo2.Body.ExceptionHandlers)
                    {
                        var handlerOffset = 0;

                        // First, is the current offset in the try block?
                        if (exceptionHandler.TryStart.Offset <= curOffset && exceptionHandler.TryEnd.Offset >= curOffset)
                        {
                            // CORINFO_EH_CLAUSE_NONE represents 'catch' blocks
                            if (exceptionHandler.FilterStart == null)
                            {
                                // Now, does the catch block handle the thrown exception type?
                                var excType = _classLoader.LoadTypeFromTypeRef(exceptionHandler.CatchType);
                                if (ex.ExceptionObject.MethodTable == excType)
                                {
                                    _opStack.Clear();
                                    _opStack.Push(ex.ExceptionObject);
                                    handlerOffset = _instructions.Select((x, i) => new { Index = i, IsMatched = x == exceptionHandler.HandlerStart }).First(x => x.IsMatched).Index; // TODO: FIXME
                                    handleEx = true;
                                    //_filterNextScan = 0;
                                }
                            }
                            else
                            {
                                throw ThrowHelper.NotImplementedYet;
                            }

                            // Reset the interpreter loop in preparation of calling the handler.
                            if (handleEx)
                            {
                                // Set the IL offset of the handler.
                                _instructionPtr = handlerOffset;

                                // If an exception occurs while attempting to leave a protected scope,
                                // we empty the 'leave' info stack upon entering the handler.
                                // TODO: infoStack

                                // Some things are set up before a call, and must be cleared on an exception caught be the caller.
                                // A method that returns a struct allocates local space for the return value, and "registers" that
                                // space and the type so that it's scanned if a GC happens.  "Unregister" it if we throw an exception
                                // in the call, and handle it in the caller.  (If it's not handled by the caller, the Interpreter is
                                // deallocated, so it's value doesn't matter.)
                                _callThisArg = null;
                                _args.Clear();

                                break;
                            }
                        }
                    }
                }

                if (handleEx)
                {
                    goto EvalLoop;
                }
                else
                {
                    throw;
                }
            }
        }

        public static ObjectInstance ExecuteMethodWrapper(ClassLoader classLoader, MethodDefinition methDef, bool directCall, IList <ObjectInstance> args,
                                                          object stubContext, out bool doJmpCall)
        {
            var interp      = new PetitClrInterpreter(classLoader, methDef, directCall, args, stubContext);
            var interpFrame = new InterpreterFrame(interp);

            ObjectInstance  retVal;
            MemberReference jmpCallToken;

            interp.ExecuteMethod(out retVal, out doJmpCall, out jmpCallToken);

            if (doJmpCall)
            {
                throw ThrowHelper.NotImplementedYet;
            }

            interpFrame.Pop();
            return(retVal);
        }