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- /*******************************************************************************
- * Copyright (c) 2011 Contributors.
- * All rights reserved.
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Public License v 2.0
- * which accompanies this distribution and is available at
- * https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
- *
- * Contributors:
- * Abraham Nevado - Lucierna initial implementation
- * Just a slight variation of current DocumentParser.java from Alexandre Vasseur.
- *******************************************************************************/
- package org.aspectj.weaver.loadtime.definition;
-
- import java.io.InputStream;
- import java.io.InputStreamReader;
- import java.net.URL;
- import java.util.ArrayList;
- import java.util.Map;
-
- import org.aspectj.util.LangUtil;
- import org.aspectj.weaver.loadtime.definition.Definition.AdviceKind;
- import org.aspectj.weaver.loadtime.definition.Definition.DeclareAnnotationKind;
- import org.xml.sax.SAXException;
-
- /**
- * This class has been created to avoid deadlocks when instrumenting SAXParser.
- * So it is used as a wrapper for the ligthweigh XML parser LightXMLParser.
- *
- * @author A. Nevado
- */
- public class SimpleAOPParser {
-
- private final static String ASPECTJ_ELEMENT = "aspectj";
- private final static String WEAVER_ELEMENT = "weaver";
- private final static String DUMP_ELEMENT = "dump";
- private final static String DUMP_BEFOREANDAFTER_ATTRIBUTE = "beforeandafter";
- private final static String DUMP_PERCLASSLOADERDIR_ATTRIBUTE = "perclassloaderdumpdir";
- private final static String INCLUDE_ELEMENT = "include";
- private final static String EXCLUDE_ELEMENT = "exclude";
- private final static String OPTIONS_ATTRIBUTE = "options";
- private final static String ASPECTS_ELEMENT = "aspects";
- private final static String ASPECT_ELEMENT = "aspect";
- private final static String CONCRETE_ASPECT_ELEMENT = "concrete-aspect";
- private final static String NAME_ATTRIBUTE = "name";
- private final static String SCOPE_ATTRIBUTE = "scope";
- private final static String REQUIRES_ATTRIBUTE = "requires";
- private final static String EXTEND_ATTRIBUTE = "extends";
- private final static String PRECEDENCE_ATTRIBUTE = "precedence";
- private final static String PERCLAUSE_ATTRIBUTE = "perclause";
- private final static String POINTCUT_ELEMENT = "pointcut";
- private final static String WITHIN_ATTRIBUTE = "within";
- private final static String EXPRESSION_ATTRIBUTE = "expression";
- private static final String DECLARE_ANNOTATION = "declare-annotation";
- private static final String ANNONATION_TAG = "annotation";
- private static final String ANNO_KIND_TYPE = "type";
- private static final String ANNO_KIND_METHOD = "method";
- private static final String ANNO_KIND_FIELD = "field";
- private final static String BEFORE_ELEMENT = "before";
- private final static String AFTER_ELEMENT = "after";
- private final static String AROUND_ELEMENT = "around";
- private final Definition m_definition;
- private boolean m_inAspectJ;
- private boolean m_inWeaver;
- private boolean m_inAspects;
-
- private Definition.ConcreteAspect m_lastConcreteAspect;
-
- private SimpleAOPParser() {
- m_definition = new Definition();
- }
-
- public static Definition parse(final URL url) throws Exception {
- // FileReader freader = new FileReader("/tmp/aop.xml");
- InputStream in = url.openStream();
- LightXMLParser xml = new LightXMLParser();
- xml.parseFromReader(new InputStreamReader(in));
- SimpleAOPParser sap = new SimpleAOPParser();
- traverse(sap, xml);
- return sap.m_definition;
- }
-
- private void startElement(String qName, Map<String, Object> attrMap) throws Exception {
- if (ASPECT_ELEMENT.equals(qName)) {
- String name = (String) attrMap.get(NAME_ATTRIBUTE);
- String scopePattern = replaceXmlAnd((String) attrMap
- .get(SCOPE_ATTRIBUTE));
- String requiredType = (String) attrMap.get(REQUIRES_ATTRIBUTE);
- if (!isNull(name)) {
- m_definition.getAspectClassNames().add(name);
- if (scopePattern != null) {
- m_definition.addScopedAspect(name, scopePattern);
- }
- if (requiredType != null) {
- m_definition.setAspectRequires(name, requiredType);
- }
- }
- } else if (WEAVER_ELEMENT.equals(qName)) {
- String options = (String) attrMap.get(OPTIONS_ATTRIBUTE);
- if (!isNull(options)) {
- m_definition.appendWeaverOptions(options);
- }
- m_inWeaver = true;
- } else if (CONCRETE_ASPECT_ELEMENT.equals(qName)) {
- String name = (String) attrMap.get(NAME_ATTRIBUTE);
- String extend = (String) attrMap.get(EXTEND_ATTRIBUTE);
- String precedence = (String) attrMap.get(PRECEDENCE_ATTRIBUTE);
- String perclause = (String) attrMap.get(PERCLAUSE_ATTRIBUTE);
- if (!isNull(name)) {
- m_lastConcreteAspect = new Definition.ConcreteAspect(name,
- extend, precedence, perclause);
- m_definition.getConcreteAspects().add(m_lastConcreteAspect);
- }
- } else if (POINTCUT_ELEMENT.equals(qName)
- && m_lastConcreteAspect != null) {
- String name = (String) attrMap.get(NAME_ATTRIBUTE);
- String expression = (String) attrMap.get(EXPRESSION_ATTRIBUTE);
- if (!isNull(name) && !isNull(expression)) {
- m_lastConcreteAspect.pointcuts.add(new Definition.Pointcut(
- name, replaceXmlAnd(expression)));
- }
- } else if (ASPECTJ_ELEMENT.equals(qName)) {
- if (m_inAspectJ) {
- throw new Exception("Found nested <aspectj> element");
- }
- m_inAspectJ = true;
- } else if (ASPECTS_ELEMENT.equals(qName)) {
- m_inAspects = true;
- } else if (INCLUDE_ELEMENT.equals(qName) && m_inWeaver) {
- String typePattern = getWithinAttribute(attrMap);
- if (!isNull(typePattern)) {
- m_definition.getIncludePatterns().add(typePattern);
- }
- } else if (EXCLUDE_ELEMENT.equals(qName) && m_inWeaver) {
- String typePattern = getWithinAttribute(attrMap);
- if (!isNull(typePattern)) {
- m_definition.getExcludePatterns().add(typePattern);
- }
- } else if (DUMP_ELEMENT.equals(qName) && m_inWeaver) {
- String typePattern = getWithinAttribute(attrMap);
- if (!isNull(typePattern)) {
- m_definition.getDumpPatterns().add(typePattern);
- }
- String beforeAndAfter = (String) attrMap
- .get(DUMP_BEFOREANDAFTER_ATTRIBUTE);
- if (isTrue(beforeAndAfter)) {
- m_definition.setDumpBefore(true);
- }
- String perWeaverDumpDir = (String) attrMap
- .get(DUMP_PERCLASSLOADERDIR_ATTRIBUTE);
- if (isTrue(perWeaverDumpDir)) {
- m_definition.setCreateDumpDirPerClassloader(true);
- }
- } else if (EXCLUDE_ELEMENT.equals(qName) && m_inAspects) {
- String typePattern = getWithinAttribute(attrMap);
- if (!isNull(typePattern)) {
- m_definition.getAspectExcludePatterns().add(typePattern);
- }
- } else if (INCLUDE_ELEMENT.equals(qName) && m_inAspects) {
- String typePattern = getWithinAttribute(attrMap);
- if (!isNull(typePattern)) {
- m_definition.getAspectIncludePatterns().add(typePattern);
- }
- }else if (DECLARE_ANNOTATION.equals(qName) && m_inAspects) {
- String anno = (String) attrMap.get(ANNONATION_TAG);
- if (!isNull(anno)){
- String pattern = (String) attrMap.get(ANNO_KIND_FIELD);
- if (pattern != null){
- m_lastConcreteAspect.declareAnnotations.add(new Definition.DeclareAnnotation(
- DeclareAnnotationKind.Field, pattern, anno));
- }
- else{
- pattern = (String) attrMap.get(ANNO_KIND_METHOD);
- if (pattern != null){
- m_lastConcreteAspect.declareAnnotations.add(new Definition.DeclareAnnotation(
- DeclareAnnotationKind.Method, pattern, anno));
- }
- else{
- pattern = (String) attrMap.get(ANNO_KIND_TYPE);
- if (pattern != null){
- m_lastConcreteAspect.declareAnnotations.add(new Definition.DeclareAnnotation(
- DeclareAnnotationKind.Type, pattern, anno));
- }
- }
- }
-
- }
- }
- else if (BEFORE_ELEMENT.equals(qName) && m_inAspects ) {
- String pointcut = (String) attrMap.get(POINTCUT_ELEMENT);
- String adviceClass = (String) attrMap.get("invokeClass");
- String adviceMethod = (String) attrMap.get("invokeMethod");
- if (!isNull(pointcut) && !isNull(adviceClass) && !isNull(adviceMethod)) {
- m_lastConcreteAspect.pointcutsAndAdvice.add(new Definition.PointcutAndAdvice(AdviceKind.Before,
- replaceXmlAnd(pointcut), adviceClass, adviceMethod));
- } else {
- throw new SAXException("Badly formed <before> element");
- }
- } else if (AFTER_ELEMENT.equals(qName) && m_inAspects) {
- String pointcut = (String) attrMap.get(POINTCUT_ELEMENT);
- String adviceClass = (String) attrMap.get("invokeClass");
- String adviceMethod = (String) attrMap.get("invokeMethod");
- if (!isNull(pointcut) && !isNull(adviceClass) && !isNull(adviceMethod)) {
- m_lastConcreteAspect.pointcutsAndAdvice.add(new Definition.PointcutAndAdvice(AdviceKind.After,
- replaceXmlAnd(pointcut), adviceClass, adviceMethod));
- } else {
- throw new SAXException("Badly formed <after> element");
- }
- } else if (AROUND_ELEMENT.equals(qName) && m_inAspects) {
- String pointcut = (String) attrMap.get(POINTCUT_ELEMENT);
- String adviceClass = (String) attrMap.get("invokeClass");
- String adviceMethod = (String) attrMap.get("invokeMethod");
- if (!isNull(pointcut) && !isNull(adviceClass) && !isNull(adviceMethod)) {
- m_lastConcreteAspect.pointcutsAndAdvice.add(new Definition.PointcutAndAdvice(AdviceKind.Around,
- replaceXmlAnd(pointcut), adviceClass, adviceMethod));
- }
- }
- else {
- throw new Exception(
- "Unknown element while parsing <aspectj> element: " + qName);
- }
- }
-
- private void endElement(String qName) throws Exception {
- if (CONCRETE_ASPECT_ELEMENT.equals(qName)) {
- m_lastConcreteAspect = null;
- } else if (ASPECTJ_ELEMENT.equals(qName)) {
- m_inAspectJ = false;
- } else if (WEAVER_ELEMENT.equals(qName)) {
- m_inWeaver = false;
- } else if (ASPECTS_ELEMENT.equals(qName)) {
- m_inAspects = false;
- }
- }
-
- private String getWithinAttribute(Map<String, Object> attributes) {
- return replaceXmlAnd((String) attributes.get(WITHIN_ATTRIBUTE));
- }
-
- private static String replaceXmlAnd(String expression) {
- // TODO AV do we need to handle "..)AND" or "AND(.." ?
- return LangUtil.replace(expression, " AND ", " && ");
- }
-
- private boolean isNull(String s) {
- return (s == null || s.length() <= 0);
- }
-
- private boolean isTrue(String s) {
- return (s != null && s.equals("true"));
- }
-
- private static void traverse(SimpleAOPParser sap, LightXMLParser xml)
- throws Exception {
- sap.startElement(xml.getName(), xml.getAttributes());
- Iterable<LightXMLParser> childrens = xml.getChildrens();
- for (LightXMLParser child : childrens) {
- traverse(sap, child);
- }
- sap.endElement(xml.getName());
-
- }
- }
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