bsh.BSHMethodInvocation Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of aibench-shell Show documentation
The newest version!
/*
 * #%L
 * The AIBench Shell Plugin
 * %%
 * Copyright (C) 2006 - 2017 Daniel Glez-Peña and Florentino Fdez-Riverola
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * .
 * #L%
 */
/*****************************************************************************
 *                                                                           *
 *  This file is part of the BeanShell Java Scripting distribution.          *
 *  Documentation and updates may be found at http://www.beanshell.org/      *
 *                                                                           *
 *  Sun Public License Notice:                                               *
 *                                                                           *
 *  The contents of this file are subject to the Sun Public License Version  *
 *  1.0 (the "License"); you may not use this file except in compliance with *
 *  the License. A copy of the License is available at http://www.sun.com    * 
 *                                                                           *
 *  The Original Code is BeanShell. The Initial Developer of the Original    *
 *  Code is Pat Niemeyer. Portions created by Pat Niemeyer are Copyright     *
 *  (C) 2000.  All Rights Reserved.                                          *
 *                                                                           *
 *  GNU Public License Notice:                                               *
 *                                                                           *
 *  Alternatively, the contents of this file may be used under the terms of  *
 *  the GNU Lesser General Public License (the "LGPL"), in which case the    *
 *  provisions of LGPL are applicable instead of those above. If you wish to *
 *  allow use of your version of this file only under the  terms of the LGPL *
 *  and not to allow others to use your version of this file under the SPL,  *
 *  indicate your decision by deleting the provisions above and replace      *
 *  them with the notice and other provisions required by the LGPL.  If you  *
 *  do not delete the provisions above, a recipient may use your version of  *
 *  this file under either the SPL or the LGPL.                              *
 *                                                                           *
 *  Patrick Niemeyer ([email protected])                                           *
 *  Author of Learning Java, O'Reilly & Associates                           *
 *  http://www.pat.net/~pat/                                                 *
 *                                                                           *
 *****************************************************************************/

package bsh;

import java.lang.reflect.InvocationTargetException;

class BSHMethodInvocation extends SimpleNode {
        BSHMethodInvocation(int id) {
                super(id);
        }

        BSHAmbiguousName getNameNode() {
                return (BSHAmbiguousName) jjtGetChild(0);
        }

        BSHArguments getArgsNode() {
                return (BSHArguments) jjtGetChild(1);
        }

        /**
         * Evaluate the method invocation with the specified callstack and
         * interpreter
         */
        public Object eval(CallStack callstack, Interpreter interpreter) throws EvalError {
                NameSpace namespace = callstack.top();
                BSHAmbiguousName nameNode = getNameNode();

                // Do not evaluate methods this() or super() in class instance
                // space
                // (i.e. inside a constructor)
                if (namespace.getParent() != null && namespace.getParent().isClass && (nameNode.text.equals("super") || nameNode.text.equals("this")))
                        return Primitive.VOID;

                Name name = nameNode.getName(namespace);
                Object[] args = getArgsNode().getArguments(callstack, interpreter);

                // This try/catch block is replicated is BSHPrimarySuffix...
                // need to
                // factor out common functionality...
                // Move to Reflect?
                try {
                        return name.invokeMethod(interpreter, args, callstack, this);
                } catch (ReflectError e) {
                        throw new EvalError("Error in method invocation: " + e.getMessage(), this, callstack);
                } catch (InvocationTargetException e) {
                        String msg = "Method Invocation " + name;
                        Throwable te = e.getTargetException();

                        /*
                         * Try to squeltch the native code stack trace if the
                         * exception was caused by a reflective call back into
                         * the bsh interpreter (e.g. eval() or source()
                         */
                        boolean isNative = true;
                        if (te instanceof EvalError)
                                if (te instanceof TargetError)
                                        isNative = ((TargetError) te).inNativeCode();
                                else
                                        isNative = false;

                        throw new TargetError(msg, te, this, callstack, isNative);
                } catch (UtilEvalError e) {
                        throw e.toEvalError(this, callstack);
                }
        }
}