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BEGIN LICENSE BLOCK ***** Version: EPL 1.0/GPL 2.0/LGPL 2.1 The contents of this file are subject to the Eclipse Public License Version 1.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. Copyright (C) 2002-2004 Anders Bengtsson <> Copyright (C) 2004 Stefan Matthias Aust <> Copyright (C) 2004 Jan Arne Petersen <> Copyright (C) 2004 David Corbin <> Alternatively, the contents of this file may be used under the terms of either of the GNU General Public License Version 2 or later (the "GPL"), or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which case the provisions of the GPL or the LGPL are applicable instead of those above. If you wish to allow use of your version of this file only under the terms of either the GPL or the LGPL, and not to allow others to use your version of this file under the terms of the EPL, indicate your decision by deleting the provisions above and replace them with the notice and other provisions required by the GPL or the LGPL. If you do not delete the provisions above, a recipient may use your version of this file under the terms of any one of the EPL, the GPL or the LGPL. END LICENSE BLOCK ***
 package org.jruby.javasupport;
 import org.jruby.Ruby;
 public abstract class JavaCallable extends JavaAccessibleObject implements ParameterTypes {
     protected final Class<?>[] parameterTypes;
     private static final boolean REWRITE_JAVA_TRACE = ..load();
     public JavaCallable(Ruby runtimeRubyClass rubyClassClass<?>[] parameterTypes) {
         this. = parameterTypes;
     public static void registerRubyMethods(Ruby runtimeRubyClass result) {
     public abstract int getArity();
     public abstract int getModifiers();
     public abstract Class<?>[] getParameterTypes();
     public abstract Class<?>[] getExceptionTypes();
     public abstract Type[] getGenericExceptionTypes();
     public abstract Type[] getGenericParameterTypes();
     public abstract Annotation[][] getParameterAnnotations();
     public abstract boolean isVarArgs();
     public abstract String toGenericString();

the name used in the head of the string returned from inspect()
     protected abstract String nameOnInspection();
     public final RubyFixnum arity() {
         return getRuntime().newFixnum(getArity());
     public final RubyArray argument_types() {
         return JavaClass.getRubyArray(getRuntime(), getParameterTypes());
     // same as argument_types, but matches name in java.lang.reflect.Constructor/Method
     public IRubyObject parameter_types() {
         return JavaClass.getRubyArray(getRuntime(), getParameterTypes());
     public IRubyObject exception_types() {
         return JavaClass.getRubyArray(getRuntime(), getExceptionTypes());
        return Java.getInstance(getRuntime(), getGenericParameterTypes());
        return Java.getInstance(getRuntime(), getGenericExceptionTypes());
        return Java.getInstance(getRuntime(), getParameterAnnotations());
    @JRubyMethod(name = "varargs?")
    public RubyBoolean varargs_p() {
        return getRuntime().newBoolean(isVarArgs());
    public RubyString to_generic_string() {
        return getRuntime().newString(toGenericString());
    public IRubyObject inspect() {
        StringBuilder result = new StringBuilder();
        Class<?>[] parameterTypes = getParameterTypes();
        for (int i = 0; i < parameterTypes.lengthi++) {
            if (i < parameterTypes.length - 1) {
        return getRuntime().newString(result.toString());
    @JRubyMethod(name = "public?")
    public RubyBoolean public_p() {
        return RubyBoolean.newBoolean(getRuntime(), Modifier.isPublic(getModifiers()));
    protected void checkArity(int length) {
        if (length != getArity()) {
            throw getRuntime().newArgumentError(lengthgetArity());
    protected static String dumpArgTypes(Object[] arguments) {
        StringBuilder str = new StringBuilder("[");
        for (int i = 0; i < arguments.lengthi++) {
            if (i > 0) {
            if (arguments[i] == null) {
            } else {
        return str.toString();
    protected IRubyObject handleThrowable(Throwable tMember target) {
        if () {
        // not reached
        return getRuntime().getNil();
        return handleThrowable(ite.getTargetException(), target);
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