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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.GroovyRuntimeException;
import groovy.lang.MetaClassImpl;
import org.codehaus.groovy.reflection.CachedConstructor;
import org.codehaus.groovy.runtime.MetaClassHelper;
import org.codehaus.groovy.runtime.ScriptBytecodeAdapter;
import java.util.Map;
public class ConstructorSite extends MetaClassSite {
final CachedConstructor constructor;
final Class[] params;
private final int version;
public ConstructorSite(CallSite site, MetaClassImpl metaClass, CachedConstructor constructor, Class params[]) {
super(site, metaClass);
this.constructor = constructor;
this.params = params;
this.version = metaClass.getVersion();
}
public Object callConstructor(Object receiver, Object[] args) throws Throwable {
if (checkCall(receiver, args)) {
MetaClassHelper.unwrap(args);
try {
return constructor.doConstructorInvoke(args);
} catch (GroovyRuntimeException gre) {
throw ScriptBytecodeAdapter.unwrap(gre);
}
} else
return CallSiteArray.defaultCallConstructor(this, receiver, args);
}
protected final boolean checkCall(Object receiver, Object[] args) {
return receiver == metaClass.getTheClass() // meta class match receiver
&& ((MetaClassImpl) metaClass).getVersion() == version // metaClass still be valid
&& MetaClassHelper.sameClasses(params, args);
}
public static ConstructorSite createConstructorSite(CallSite site, MetaClassImpl metaClass, CachedConstructor constructor, Class[] params, Object[] args) {
if (constructor.correctArguments(args) == args) {
if (noWrappers(args)) {
if (noCoerce(constructor, args))
return new ConstructorSiteNoUnwrap(site, metaClass, constructor, params);
else
return new ConstructorSiteNoUnwrapNoCoerce(site, metaClass, constructor, params);
}
}
return new ConstructorSite(site, metaClass, constructor, params);
}
/**
* Call site where we know there is no need to unwrap arguments
*/
public static class ConstructorSiteNoUnwrap extends ConstructorSite {
public ConstructorSiteNoUnwrap(CallSite site, MetaClassImpl metaClass, CachedConstructor constructor, Class params[]) {
super(site, metaClass, constructor, params);
}
public final Object callConstructor(Object receiver, Object[] args) throws Throwable {
if (checkCall(receiver, args)) {
try {
return constructor.doConstructorInvoke(args);
} catch (GroovyRuntimeException gre) {
throw ScriptBytecodeAdapter.unwrap(gre);
}
} else
return CallSiteArray.defaultCallConstructor(this, receiver, args);
}
}
/**
* Call site where we know there is no need neither unwrap nor coerce arguments
*/
public static class ConstructorSiteNoUnwrapNoCoerce extends ConstructorSite {
public ConstructorSiteNoUnwrapNoCoerce(CallSite site, MetaClassImpl metaClass, CachedConstructor constructor, Class params[]) {
super(site, metaClass, constructor, params);
}
public Object callConstructor(Object receiver, Object[] args) throws Throwable {
if (checkCall(receiver, args)) {
try {
return constructor.invoke(args);
} catch (GroovyRuntimeException gre) {
throw ScriptBytecodeAdapter.unwrap(gre);
}
} else
return CallSiteArray.defaultCallConstructor(this, receiver, args);
}
}
public static class NoParamSite extends ConstructorSiteNoUnwrapNoCoerce {
private static final Object[] NO_ARGS = new Object[0];
public NoParamSite(CallSite site, MetaClassImpl metaClass, CachedConstructor constructor, Class[] params) {
super(site, metaClass, constructor, params);
}
public final Object callConstructor(Object receiver, Object[] args) throws Throwable {
if (checkCall(receiver, args)) {
final Object bean = constructor.invoke(NO_ARGS);
try {
((MetaClassImpl) metaClass).setProperties(bean, (Map) args[0]);
} catch (GroovyRuntimeException gre) {
throw ScriptBytecodeAdapter.unwrap(gre);
}
return bean;
} else
return CallSiteArray.defaultCallConstructor(this, receiver, args);
}
}
public static class NoParamSiteInnerClass extends ConstructorSiteNoUnwrapNoCoerce {
private static final Object[] NO_ARGS = new Object[0];
public NoParamSiteInnerClass(CallSite site, MetaClassImpl metaClass, CachedConstructor constructor, Class[] params) {
super(site, metaClass, constructor, params);
}
public final Object callConstructor(Object receiver, Object[] args) throws Throwable {
if (checkCall(receiver, args)) {
final Object[] newArgs = new Object[] {args[0]};
final Object bean = constructor.invoke(newArgs);
try {
((MetaClassImpl) metaClass).setProperties(bean, (Map) args[1]);
} catch (GroovyRuntimeException gre) {
throw ScriptBytecodeAdapter.unwrap(gre);
}
return bean;
} else
return CallSiteArray.defaultCallConstructor(this, receiver, args);
}
}
}