예제 #1
0
        private CommandProcessorBase CreateCommandProcessor(
            out int index,
            ExecutionContext context)
        {
            index = 0;
            CommandProcessorBase commandProcessorBase = (CommandProcessorBase)null;

            if (this._expression != null)
            {
                return((CommandProcessorBase) new ScriptCommandProcessor(ScriptBlock.CreateSynthesized(this._expression, this.NodeToken), context, false));
            }
            bool createScope;
            SessionStateInternal commandSessionState;
            bool   forceSessionState;
            object commandName = this.GetCommandName(out createScope, out index, out commandSessionState, out forceSessionState, context);

            switch (commandName)
            {
            case ScriptBlock scriptblock:
                commandProcessorBase = CommandDiscovery.CreateCommandProcessorForScript(scriptblock, context, createScope);
                if (commandProcessorBase.CommandSessionState == null || forceSessionState)
                {
                    commandProcessorBase.CommandSessionState = commandSessionState;
                    break;
                }
                break;

            case CommandInfo commandInfo:
                commandProcessorBase = context.CommandDiscovery.LookupCommandProcessor(commandInfo, context.EngineSessionState.currentScope.ScopeOrigin, new bool?(false));
                break;

            case string stringParser:
label_7:
                if (string.IsNullOrEmpty(stringParser))
                {
                    throw InterpreterError.NewInterpreterException(commandName, typeof(RuntimeException), (Token)this._elements[0], "BadExpression", (object)((Token)this._elements[0]).TokenText);
                }
                try
                {
                    if (commandSessionState != context.EngineSessionState)
                    {
                        SessionStateInternal engineSessionState = context.EngineSessionState;
                        try
                        {
                            context.EngineSessionState = commandSessionState;
                            commandProcessorBase       = context.CreateCommand(stringParser);
                            break;
                        }
                        finally
                        {
                            context.EngineSessionState = engineSessionState;
                        }
                    }
                    else
                    {
                        commandProcessorBase = context.CreateCommand(stringParser);
                        break;
                    }
                }
                catch (ParseException ex)
                {
                    throw;
                }
                catch (RuntimeException ex)
                {
                    if (ex.ErrorRecord.InvocationInfo == null)
                    {
                        ex.ErrorRecord.SetInvocationInfo(new InvocationInfo((CommandInfo)null, (Token)this._elements[0], context));
                    }
                    throw;
                }

            default:
                stringParser = PSObject.ToStringParser(context, commandName);
                goto label_7;
            }
            if (commandProcessorBase.CommandSessionState == null || forceSessionState)
            {
                commandProcessorBase.CommandSessionState = commandSessionState;
            }
            InternalCommand command = commandProcessorBase.Command;

            command.MyInvocation.ScriptToken = (Token)this._elements[0];
            if (context.IsStrictVersion(2) && this._elements.Count == index + 1 && (this._elements[index - 1] is Token && this._elements[index] is ArrayLiteralNode))
            {
                Token element = (Token)this._elements[index - 1];
                if (element.Script[element.End] == '(')
                {
                    throw InterpreterError.NewInterpreterException((object)null, typeof(RuntimeException), (Token)this._elements[index - 1], "StrictModeFunctionCallWithParens");
                }
            }
            if (createScope)
            {
                switch (command)
                {
                case ScriptCommand _:
                case PSScriptCmdlet _:
                    commandProcessorBase.UseLocalScope = true;
                    commandProcessorBase.CommandScope  = commandProcessorBase.CommandSessionState == null?context.EngineSessionState.NewScope(commandProcessorBase.FromScriptFile) : commandProcessorBase.CommandSessionState.NewScope(commandProcessorBase.FromScriptFile);

                    goto label_27;
                }
            }
            commandProcessorBase.UseLocalScope = false;
            commandProcessorBase.CommandScope  = commandProcessorBase.CommandSessionState.CurrentScope;
label_27:
            commandProcessorBase.Command.CallingToken = (Token)this._elements[0];
            return(commandProcessorBase);
        }