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Groovy: A powerful, dynamic language for the JVM
/*
* 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.runtime.callsite;
import groovy.lang.GroovyObject;
import groovy.lang.GroovyRuntimeException;
import groovy.lang.MetaClassImpl;
import groovy.lang.MetaMethod;
import org.codehaus.groovy.reflection.CachedMethod;
import org.codehaus.groovy.runtime.GroovyCategorySupport;
import org.codehaus.groovy.runtime.MetaClassHelper;
import org.codehaus.groovy.runtime.ScriptBytecodeAdapter;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/**
* POGO call site
* meta class - cached
* method - cached
*/
public class PogoMetaMethodSite extends MetaMethodSite {
private final int version;
private final boolean skipVersionCheck;
public PogoMetaMethodSite(CallSite site, MetaClassImpl metaClass, MetaMethod metaMethod, Class params[]) {
super(site, metaClass, metaMethod, params);
version = metaClass.getVersion();
skipVersionCheck = metaClass.getClass()==MetaClassImpl.class;
}
public Object invoke(Object receiver, Object[] args) throws Throwable {
MetaClassHelper.unwrap(args);
try {
return metaMethod.doMethodInvoke(receiver, args);
} catch (GroovyRuntimeException gre) {
throw ScriptBytecodeAdapter.unwrap(gre);
}
}
public Object callCurrent(GroovyObject receiver, Object[] args) throws Throwable {
if(checkCall(receiver, args)) {
try {
return invoke(receiver,args);
} catch (GroovyRuntimeException gre) {
throw ScriptBytecodeAdapter.unwrap(gre);
}
} else {
return CallSiteArray.defaultCallCurrent(this, receiver, args);
}
}
public Object call(Object receiver, Object[] args) throws Throwable {
if(checkCall(receiver, args)) {
try {
return invoke(receiver,args);
} catch (GroovyRuntimeException gre) {
throw ScriptBytecodeAdapter.unwrap(gre);
}
} else {
return CallSiteArray.defaultCall(this, receiver, args);
}
}
private boolean nonParamCheck(Object receiver) {
try {
return !GroovyCategorySupport.hasCategoryInCurrentThread()
&& ((GroovyObject)receiver).getMetaClass() == metaClass // metaClass still be valid
&& (skipVersionCheck || ((MetaClassImpl) metaClass).getVersion() == version);
} catch (NullPointerException e) {
if (receiver == null) return false;
throw e;
} catch (ClassCastException e) {
if (!(receiver instanceof GroovyObject)) return false;
throw e;
}
}
protected boolean checkCall(Object receiver, Object[] args) {
return nonParamCheck(receiver)
&& MetaClassHelper.sameClasses(params, args);
}
protected boolean checkCall(Object receiver) {
return nonParamCheck(receiver)
&& MetaClassHelper.sameClasses(params);
}
protected boolean checkCall(Object receiver, Object arg1) {
return nonParamCheck(receiver)
&& MetaClassHelper.sameClasses(params, arg1);
}
protected boolean checkCall(Object receiver, Object arg1, Object arg2) {
return nonParamCheck(receiver)
&& MetaClassHelper.sameClasses(params, arg1, arg2);
}
protected boolean checkCall(Object receiver, Object arg1, Object arg2, Object arg3) {
return nonParamCheck(receiver)
&& MetaClassHelper.sameClasses(params, arg1, arg2, arg3);
}
protected boolean checkCall(Object receiver, Object arg1, Object arg2, Object arg3, Object arg4) {
return nonParamCheck(receiver)
&& MetaClassHelper.sameClasses(params, arg1, arg2, arg3, arg4);
}
public static CallSite createPogoMetaMethodSite(CallSite site, MetaClassImpl metaClass, MetaMethod metaMethod, Class[] params, Object[] args) {
if (metaMethod.getClass() == CachedMethod.class)
return createCachedMethodSite (site, metaClass, (CachedMethod) metaMethod, params, args);
return createNonAwareCallSite(site, metaClass, metaMethod, params, args);
}
private static CallSite createNonAwareCallSite(CallSite site, MetaClassImpl metaClass, MetaMethod metaMethod, Class[] params, Object[] args) {
if (metaMethod.correctArguments(args) == args) {
if (noWrappers(args)) {
if (noCoerce(metaMethod,args))
return new PogoMetaMethodSiteNoUnwrap(site, metaClass, metaMethod, params);
else {
return new PogoMetaMethodSiteNoUnwrapNoCoerce(site, metaClass, metaMethod, params);
}
}
}
return new PogoMetaMethodSite(site, metaClass, metaMethod, params);
}
public static CallSite createCachedMethodSite(CallSite site, MetaClassImpl metaClass, CachedMethod metaMethod, Class[] params, Object[] args) {
if (metaMethod.correctArguments(args) == args) {
if (noWrappers(args)) {
if (noCoerce(metaMethod,args))
return new PogoCachedMethodSiteNoUnwrap(site, metaClass, metaMethod, params);
else {
return metaMethod.createPogoMetaMethodSite(site, metaClass, params);
}
}
}
return new PogoCachedMethodSite(site, metaClass, metaMethod, params);
}
public static class PogoCachedMethodSite extends PogoMetaMethodSite {
final Method reflect;
public PogoCachedMethodSite(CallSite site, MetaClassImpl metaClass, CachedMethod metaMethod, Class[] params) {
super(site, metaClass, metaMethod, params);
reflect = metaMethod.setAccessible();
}
public Object invoke(Object receiver, Object[] args) throws Throwable {
MetaClassHelper.unwrap(args);
args = metaMethod.coerceArgumentsToClasses(args);
try {
return reflect.invoke(receiver, args);
} catch (InvocationTargetException e) {
Throwable cause = e.getCause();
if (cause instanceof GroovyRuntimeException) {
throw ScriptBytecodeAdapter.unwrap ((GroovyRuntimeException) cause);
} else {
throw cause;
}
}
}
}
public static class PogoCachedMethodSiteNoUnwrap extends PogoCachedMethodSite {
public PogoCachedMethodSiteNoUnwrap(CallSite site, MetaClassImpl metaClass, CachedMethod metaMethod, Class params[]) {
super(site, metaClass, metaMethod, params);
}
public final Object invoke(Object receiver, Object[] args) throws Throwable {
args = metaMethod.coerceArgumentsToClasses(args);
try {
return reflect.invoke(receiver, args);
} catch (InvocationTargetException e) {
Throwable cause = e.getCause();
if (cause instanceof GroovyRuntimeException) {
throw ScriptBytecodeAdapter.unwrap ((GroovyRuntimeException) cause);
} else {
throw cause;
}
}
}
}
public static class PogoCachedMethodSiteNoUnwrapNoCoerce extends PogoCachedMethodSite {
public PogoCachedMethodSiteNoUnwrapNoCoerce(CallSite site, MetaClassImpl metaClass, CachedMethod metaMethod, Class params[]) {
super(site, metaClass, metaMethod, params);
}
public final Object invoke(Object receiver, Object[] args) throws Throwable {
try {
return reflect.invoke(receiver, args);
} catch (InvocationTargetException e) {
Throwable cause = e.getCause();
if (cause instanceof GroovyRuntimeException) {
throw ScriptBytecodeAdapter.unwrap ((GroovyRuntimeException) cause);
} else {
throw cause;
}
}
}
}
/**
* Call site where we know there is no need to unwrap arguments
*/
public static class PogoMetaMethodSiteNoUnwrap extends PogoMetaMethodSite {
public PogoMetaMethodSiteNoUnwrap(CallSite site, MetaClassImpl metaClass, MetaMethod metaMethod, Class params[]) {
super(site, metaClass, metaMethod, params);
}
public final Object invoke(Object receiver, Object[] args) throws Throwable {
try {
return metaMethod.doMethodInvoke(receiver, args);
} catch (GroovyRuntimeException gre) {
throw ScriptBytecodeAdapter.unwrap(gre);
}
}
}
/**
* Call site where we know there is no need neither unwrap nor coerce arguments
*/
public static class PogoMetaMethodSiteNoUnwrapNoCoerce extends PogoMetaMethodSite {
public PogoMetaMethodSiteNoUnwrapNoCoerce(CallSite site, MetaClassImpl metaClass, MetaMethod metaMethod, Class params[]) {
super(site, metaClass, metaMethod, params);
}
public final Object invoke(Object receiver, Object[] args) throws Throwable {
try {
return metaMethod.invoke(receiver, args);
} catch (GroovyRuntimeException gre) {
throw ScriptBytecodeAdapter.unwrap(gre);
}
}
}
}