src/main/org/codehaus/groovy/reflection/CachedConstructor.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.codehaus.groovy.reflection;

import groovy.lang.GroovyRuntimeException;
import org.codehaus.groovy.runtime.InvokerHelper;
import org.codehaus.groovy.runtime.InvokerInvocationException;

import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.security.AccessController;
import java.security.PrivilegedAction;

/**
 * @author Alex.Tkachman
 */
public class CachedConstructor extends ParameterTypes {
    CachedClass clazz;

    public final Constructor cachedConstructor;

    public CachedConstructor(CachedClass clazz, final Constructor c) {
        this.cachedConstructor = c;
        this.clazz = clazz;
        try {
            AccessController.doPrivileged(new PrivilegedAction() {
                public Object run() {
                    c.setAccessible(true);
                    return null;
                }
            });
        } catch (SecurityException e) {
            // IGNORE
        } catch (RuntimeException re) {
            // test for JDK9 JIGSAW
            if (!"java.lang.reflect.InaccessibleObjectException".equals(re.getClass().getName())) throw re;
            // else IGNORE
        }
    }

    public CachedConstructor(Constructor c) {
        this(ReflectionCache.getCachedClass(c.getDeclaringClass()), c);
    }

    protected Class[] getPT() {
        return cachedConstructor.getParameterTypes();
    }

    public static CachedConstructor find(Constructor constructor) {
        CachedConstructor[] constructors = ReflectionCache.getCachedClass(constructor.getDeclaringClass()).getConstructors();
        for (int i = 0; i < constructors.length; i++) {
            CachedConstructor cachedConstructor = constructors[i];
            if (cachedConstructor.cachedConstructor.equals(constructor))
                return cachedConstructor;
        }
        throw new RuntimeException("Couldn't find method: " + constructor);
    }

    public Object doConstructorInvoke(Object[] argumentArray) {
        argumentArray = coerceArgumentsToClasses(argumentArray);
        return invoke(argumentArray);
    }

    public Object invoke(Object[] argumentArray) {
        Constructor constr = cachedConstructor;
        try {
            return constr.newInstance(argumentArray);
        } catch (InvocationTargetException e) {
            throw e.getCause() instanceof RuntimeException ? (RuntimeException)e.getCause() : new InvokerInvocationException(e);
        } catch (IllegalArgumentException e) {
            throw createExceptionText("failed to invoke constructor: ", constr, argumentArray, e, false);
        } catch (IllegalAccessException e) {
            throw createExceptionText("could not access constructor: ", constr, argumentArray, e, false);
        } catch (Exception e) {
            if (e instanceof RuntimeException)
                throw (RuntimeException)e;
            else
                throw createExceptionText("failed to invoke constructor: ", constr, argumentArray, e, true);
        }
    }

    private static GroovyRuntimeException createExceptionText(String init, Constructor constructor, Object[] argumentArray, Throwable e, boolean setReason) {
        throw new GroovyRuntimeException(
                init
                        + constructor
                        + " with arguments: "
                        + InvokerHelper.toString(argumentArray)
                        + " reason: "
                        + e,
                setReason ? e : null);
    }

    public int getModifiers () {
        return cachedConstructor.getModifiers();
    }
    
    public CachedClass getCachedClass() {
        return clazz;
    }
}