/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This 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 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.aop.pointcut;
import javassist.CtClass;
import javassist.CtConstructor;
import javassist.CtField;
import javassist.CtMethod;
import javassist.NotFoundException;
import org.jboss.aop.Advisor;
import org.jboss.aop.pointcut.ast.ASTAllParameter;
import org.jboss.aop.pointcut.ast.ASTAnd;
import org.jboss.aop.pointcut.ast.ASTAttribute;
import org.jboss.aop.pointcut.ast.ASTBoolean;
import org.jboss.aop.pointcut.ast.ASTClass;
import org.jboss.aop.pointcut.ast.ASTComposite;
import org.jboss.aop.pointcut.ast.ASTConstructor;
import org.jboss.aop.pointcut.ast.ASTException;
import org.jboss.aop.pointcut.ast.ASTField;
import org.jboss.aop.pointcut.ast.ASTHas;
import org.jboss.aop.pointcut.ast.ASTHasField;
import org.jboss.aop.pointcut.ast.ASTMethod;
import org.jboss.aop.pointcut.ast.ASTNot;
import org.jboss.aop.pointcut.ast.ASTOr;
import org.jboss.aop.pointcut.ast.ASTParameter;
import org.jboss.aop.pointcut.ast.ASTStart;
import org.jboss.aop.pointcut.ast.ASTSub;
import org.jboss.aop.pointcut.ast.Node;
import org.jboss.aop.pointcut.ast.SimpleNode;
import org.jboss.aop.pointcut.ast.TypeExpressionParserVisitor;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
/**
* Takes a Javassist object and sees if the expression
* pertains to that Javassist object (CtMethod, CtField, CtClass, CtConstructor)
*
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @version $Revision: 70842 $
*/
public class AnnotationMatcher implements TypeExpressionParserVisitor
{
private Advisor advisor;
private Object element;
public AnnotationMatcher(Advisor advisor, Object element)
{
this.advisor = advisor;
this.element = element;
}
public Object visit(ASTStart node, Object data)
{
return node.jjtGetChild(0).jjtAccept(this, data);
}
public Object visit(ASTBoolean node, Object data)
{
return node.jjtGetChild(0).jjtAccept(this, data);
}
public Object visit(ASTComposite node, Object data)
{
return node.jjtGetChild(0).jjtAccept(this, data);
}
public Object visit(ASTNot node, Object data)
{
Boolean bool = (Boolean) node.jjtGetChild(0).jjtAccept(this, data);
boolean val = bool.booleanValue();
return val ? Boolean.FALSE : Boolean.TRUE;
}
public Object visit(ASTSub node, Object data)
{
for (int i = 0; i < node.jjtGetNumChildren(); i++)
{
data = node.jjtGetChild(i).jjtAccept(this, data);
}
return data;
}
public Object visit(ASTAnd node, Object left)
{
Node andChild = node.jjtGetChild(0); // should only have one child
boolean val = ((Boolean) left).booleanValue();
return new Boolean(val && ((Boolean) andChild.jjtAccept(this, Boolean.FALSE)).booleanValue());
}
public Object visit(ASTOr node, Object left)
{
Node orChild = node.jjtGetChild(0); // should only have one child
boolean val = ((Boolean) left).booleanValue();
return new Boolean(val || ((Boolean) orChild.jjtAccept(this, Boolean.FALSE)).booleanValue());
}
public Object visit(SimpleNode node, Object data)
{
return null;
}
public CtClass getDeclaringClass()
{
if (element instanceof CtClass) return (CtClass) element;
if (element instanceof CtMethod) return ((CtMethod) element).getDeclaringClass();
if (element instanceof CtField) return ((CtField) element).getDeclaringClass();
if (element instanceof CtConstructor) return ((CtConstructor) element).getDeclaringClass();
return null;
}
public Class<?> getJavaDeclaringClass()
{
if (element instanceof Class) return (Class<?>) element;
if (element instanceof Method) return ((Method) element).getDeclaringClass();
if (element instanceof Field) return ((Field) element).getDeclaringClass();
if (element instanceof Constructor) return ((Constructor<?>) element).getDeclaringClass();
return null;
}
public Object visit(ASTHas node, Object data)
{
Node n = node.jjtGetChild(0);
if (getDeclaringClass() != null)
{
CtClass clazz = getDeclaringClass();
if (n instanceof ASTMethod)
{
return new Boolean(Util.has(clazz, (ASTMethod) n, advisor));
}
else
{
return new Boolean(Util.has(clazz, (ASTConstructor) n, advisor));
}
}
else
{
Class<?> clazz = getJavaDeclaringClass();
if (n instanceof ASTMethod)
{
return new Boolean(Util.has(clazz, (ASTMethod) n, advisor));
}
else
{
return new Boolean(Util.has(clazz, (ASTConstructor) n, advisor));
}
}
}
public Object visit(ASTHasField node, Object data)
{
if (getDeclaringClass() != null)
{
CtClass clazz = getDeclaringClass();
ASTField f = (ASTField) node.jjtGetChild(0);
return new Boolean(Util.has(clazz, f, advisor));
}
else
{
Class<?> clazz = getJavaDeclaringClass();
ASTField f = (ASTField) node.jjtGetChild(0);
return new Boolean(Util.has(clazz, f, advisor));
}
}
public Object visit(ASTClass node, Object data)
{
if (!(element instanceof CtClass) && !(element instanceof Class)) return Boolean.FALSE;
if (element instanceof CtClass)
{
CtClass clazz = (CtClass) element;
return new Boolean(Util.matchesClassExpr(node.getClazz(), clazz, advisor));
}
else
{
Class<?> clazz = (Class<?>) element;
return new Boolean(Util.matchesClassExpr(node.getClazz(), clazz, advisor));
}
}
public Object visit(ASTMethod node, Object data)
{
if (!(element instanceof CtMethod) && !(element instanceof Method)) return Boolean.FALSE;
if (element instanceof CtMethod)
{
MethodMatcher methodMatcher = null;
methodMatcher = new MethodMatcher(advisor, (CtMethod) element, null);
return methodMatcher.matches(node);
}
else
{
MethodMatcher methodMatcher = null;
methodMatcher = new MethodMatcher(advisor, (Method) element, null);
return methodMatcher.matches(node);
}
}
public Object visit(ASTConstructor node, Object data)
{
if (!(element instanceof CtConstructor) && !(element instanceof Constructor)) return Boolean.FALSE;
if (element instanceof CtConstructor)
{
ConstructorMatcher conMatcher = null;
try
{
conMatcher = new ConstructorMatcher(advisor, (CtConstructor) element, null);
}
catch (NotFoundException e)
{
throw new RuntimeException(e); //To change body of catch statement use Options | File Templates.
}
return conMatcher.matches(node);
}
else
{
ConstructorMatcher conMatcher = null;
conMatcher = new ConstructorMatcher(advisor, (Constructor<?>) element, null);
return conMatcher.matches(node);
}
}
public Object visit(ASTField node, Object data)
{
if (!(element instanceof CtField) && !(element instanceof Field)) return Boolean.FALSE;
if (element instanceof CtField)
{
FieldMatcher fieldMatcher = null;
try
{
fieldMatcher = new FieldMatcher(advisor, (CtField) element, null);
}
catch (NotFoundException e)
{
throw new RuntimeException(e); //To change body of catch statement use Options | File Templates.
}
return node.jjtAccept(fieldMatcher, null);
}
else
{
FieldMatcher fieldMatcher = null;
fieldMatcher = new FieldMatcher(advisor, (Field) element, null);
return node.jjtAccept(fieldMatcher, null);
}
}
public Object visit(ASTAttribute node, Object data)
{
return Boolean.FALSE;
}
public Object visit(ASTParameter node, Object data)
{
return Boolean.FALSE;
}
public Object visit(ASTAllParameter node, Object data)
{
return Boolean.FALSE;
}
public Object visit(ASTException node, Object data)
{
return Boolean.FALSE;
}
}