/*******************************************************************************
* Copyright (c) 2004, 2011 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.jsp.core.internal.taglib;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.servlet.jsp.tagext.FunctionInfo;
import javax.servlet.jsp.tagext.TagAttributeInfo;
import javax.servlet.jsp.tagext.TagData;
import javax.servlet.jsp.tagext.TagExtraInfo;
import javax.servlet.jsp.tagext.TagFileInfo;
import javax.servlet.jsp.tagext.TagInfo;
import javax.servlet.jsp.tagext.TagLibraryInfo;
import javax.servlet.jsp.tagext.ValidationMessage;
import javax.servlet.jsp.tagext.VariableInfo;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.Signature;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jst.jsp.core.internal.JSPCoreMessages;
import org.eclipse.jst.jsp.core.internal.Logger;
import org.eclipse.jst.jsp.core.internal.contentmodel.TaglibController;
import org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager;
import org.eclipse.jst.jsp.core.internal.contentmodel.tld.TaglibTracker;
import org.eclipse.jst.jsp.core.internal.contentmodel.tld.provisional.TLDAttributeDeclaration;
import org.eclipse.jst.jsp.core.internal.contentmodel.tld.provisional.TLDDocument;
import org.eclipse.jst.jsp.core.internal.contentmodel.tld.provisional.TLDElementDeclaration;
import org.eclipse.jst.jsp.core.internal.contentmodel.tld.provisional.TLDVariable;
import org.eclipse.jst.jsp.core.internal.java.IJSPProblem;
import org.eclipse.jst.jsp.core.internal.regions.DOMJSPRegionContexts;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.NotImplementedException;
import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegion;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionCollection;
import org.eclipse.wst.sse.core.internal.provisional.text.ITextRegionList;
import org.eclipse.wst.sse.core.internal.util.AbstractMemoryListener;
import org.eclipse.wst.sse.core.utils.StringUtils;
import org.eclipse.wst.xml.core.internal.contentmodel.CMDocument;
import org.eclipse.wst.xml.core.internal.contentmodel.CMNamedNodeMap;
import org.eclipse.wst.xml.core.internal.contentmodel.CMNode;
import org.eclipse.wst.xml.core.internal.contentmodel.modelquery.ModelQuery;
import org.eclipse.wst.xml.core.internal.modelquery.ModelQueryUtil;
import org.eclipse.wst.xml.core.internal.provisional.contentmodel.CMNodeWrapper;
import org.eclipse.wst.xml.core.internal.regions.DOMRegionContext;
import org.osgi.service.event.Event;
import com.ibm.icu.text.MessageFormat;
/**
* This class helps find TaglibVariables in a JSP file.
*/
public class TaglibHelper {
private static final String ITERATION_QUALIFIER = "javax.servlet.jsp.tagext"; //$NON-NLS-1$
private static final String ITERATION_NAME = "IterationTag"; //$NON-NLS-1$
// for debugging
private static final boolean DEBUG;
static {
String value = Platform.getDebugOption("org.eclipse.jst.jsp.core/debug/taglibvars"); //$NON-NLS-1$
DEBUG = value != null && value.equalsIgnoreCase("true"); //$NON-NLS-1$
}
private IProject fProject = null;
private ClassLoader fLoader = null;
private IJavaProject fJavaProject;
/**
* A cache of class names that the class loader could not find.
* Because the TaglibHelper is destroyed and recreated whenever
* the classpath changes this cache will not become stale
*/
private Set fNotFoundClasses = null;
private Map fClassMap = null;
/**
* Used to keep the {@link #fNotFoundClasses} cache clean when memory is low
*/
private MemoryListener fMemoryListener;
public TaglibHelper(IProject project) {
super();
setProject(project);
fMemoryListener = new MemoryListener();
fMemoryListener.connect();
fNotFoundClasses = new HashSet();
fClassMap = Collections.synchronizedMap(new HashMap());
}
/**
* Checks that <code>type</code> implements an IterationTag
*
* @param type
* @return true if <code>type</code> implements IterationTag
* @throws JavaModelException
* @throws ClassNotFoundException thrown when the <code>type</code> is null
*/
private boolean isIterationTag(IType type) throws JavaModelException, ClassNotFoundException {
if (type == null) {
throw new ClassNotFoundException();
}
synchronized (fClassMap) {
if (fClassMap.containsKey(type.getFullyQualifiedName()))
return ((Boolean) fClassMap.get(type.getFullyQualifiedName())).booleanValue();
}
String signature;
String qualifier;
String name;
String[] interfaces = type.getSuperInterfaceTypeSignatures();
boolean isIteration = false;
// Check any super interfaces for the iteration tag
for (int i = 0; i < interfaces.length; i++) {
// For source files, the interface may need to be resolved
String erasureSig = Signature.getTypeErasure(interfaces[i]);
qualifier = Signature.getSignatureQualifier(erasureSig);
name = Signature.getSignatureSimpleName(erasureSig);
// Interface type is unresolved
if (erasureSig.charAt(0) == Signature.C_UNRESOLVED) {
String[][] types = type.resolveType(getQualifiedType(qualifier, name));
// Type was resolved
if (types != null && types.length > 0) {
isIteration = handleInterface(type, types[0][0], types[0][1]);
}
}
else {
isIteration = handleInterface(type, qualifier, name);
}
if (isIteration)
return true;
}
signature = type.getSuperclassTypeSignature();
if (signature != null) {
String erasureSig = Signature.getTypeErasure(signature);
qualifier = Signature.getSignatureQualifier(erasureSig);
name = Signature.getSignatureSimpleName(erasureSig);
// superclass was unresolved
if (erasureSig.charAt(0) == Signature.C_UNRESOLVED) {
String[][] types = type.resolveType(getQualifiedType(qualifier, name));
// Type was resolved
if (types != null && types.length > 0) {
isIteration = isIterationTag(fJavaProject.findType(types[0][0], types[0][1]));
}
}
else {
isIteration = isIterationTag(fJavaProject.findType(qualifier, name));
}
}
fClassMap.put(type.getFullyQualifiedName(), Boolean.valueOf(isIteration));
return isIteration;
}
private boolean handleInterface(IType type, String qualifier, String name) throws JavaModelException, ClassNotFoundException {
boolean isIteration = false;
// Qualified interface is an iteration tag
if (ITERATION_QUALIFIER.equals(qualifier) && ITERATION_NAME.equals(name))
isIteration = true;
// Check ancestors of this interface
else
isIteration = isIterationTag(fJavaProject.findType(qualifier, name));
fClassMap.put(type.getFullyQualifiedName(), Boolean.valueOf(isIteration));
return isIteration;
}
private String getQualifiedType(String qualifier, String name) {
StringBuffer qual = new StringBuffer(qualifier);
if (qual.length() > 0)
qual.append('.');
qual.append(name);
return qual.toString();
}
private boolean isIterationTag(TLDElementDeclaration elementDecl, IStructuredDocument document, ITextRegionCollection customTag, List problems) {
String className = elementDecl.getTagclass();
if (className == null || className.length() == 0 || fProject == null || fNotFoundClasses.contains(className))
return false;
try {
synchronized (fClassMap) {
if (fClassMap.containsKey(className))
return ((Boolean) fClassMap.get(className)).booleanValue();
}
return isIterationTag(fJavaProject.findType(className));
} catch (ClassNotFoundException e) {
//the class could not be found so add it to the cache
fNotFoundClasses.add(className);
Object createdProblem = createJSPProblem(document, customTag, IJSPProblem.TagClassNotFound, JSPCoreMessages.TaglibHelper_3, className, true);
if (createdProblem != null)
problems.add(createdProblem);
if (DEBUG)
Logger.logException(className, e);
} catch (JavaModelException e) {
if (DEBUG)
Logger.logException(className, e);
} catch (Exception e) {
// this is 3rd party code, need to catch all errors
if (DEBUG)
Logger.logException(className, e);
} catch (Error e) {
// this is 3rd party code, need to catch all errors
if (DEBUG)
Logger.logException(className, e);
}
return false;
}
public CustomTag getCustomTag(String tagToAdd, IStructuredDocument structuredDoc, ITextRegionCollection customTag, List problems) {
List results = new ArrayList();
boolean isIterationTag = false;
String tagClass = null;
String teiClass = null;
if (problems == null)
problems = new ArrayList();
ModelQuery mq = getModelQuery(structuredDoc);
if (mq != null) {
TLDCMDocumentManager mgr = TaglibController.getTLDCMDocumentManager(structuredDoc);
if (mgr != null) {
List trackers = mgr.getCMDocumentTrackers(-1);
Iterator taglibs = trackers.iterator();
CMDocument doc = null;
CMNamedNodeMap elements = null;
while (taglibs.hasNext()) {
doc = (CMDocument) taglibs.next();
CMNode node = null;
if ((elements = doc.getElements()) != null && (node = elements.getNamedItem(tagToAdd)) != null && node.getNodeType() == CMNode.ELEMENT_DECLARATION) {
if (node instanceof CMNodeWrapper) {
node = ((CMNodeWrapper) node).getOriginNode();
}
TLDElementDeclaration tldElementDecl = (TLDElementDeclaration) node;
tagClass = tldElementDecl.getTagclass();
teiClass = tldElementDecl.getTeiclass();
isIterationTag = isIterationTag(tldElementDecl, structuredDoc, customTag, problems);
/*
* Although clearly not the right place to add validation
* design-wise, this is the first time we have the
* necessary information to validate the tag class.
*/
validateTagClass(structuredDoc, customTag, tldElementDecl, problems);
// 1.2+ taglib style
addVariables(results, node, customTag);
// for 1.1 need more info from taglib tracker
if (doc instanceof TaglibTracker) {
String uri = ((TaglibTracker) doc).getURI();
String prefix = ((TaglibTracker) doc).getPrefix();
// only for 1.1 taglibs
addTEIVariables(structuredDoc, customTag, results, tldElementDecl, prefix, uri, problems);
}
break;
}
}
}
}
return new CustomTag(tagToAdd, tagClass, teiClass, (TaglibVariable[]) results.toArray(new TaglibVariable[results.size()]), isIterationTag);
}
/**
* @param tagToAdd
* is the name of the tag whose variables we want
* @param structuredDoc
* is the IStructuredDocument where the tag is found
* @param customTag
* is the IStructuredDocumentRegion opening tag for the custom
* tag
* @param problems problems that are generated while creating variables are added to this collection
*/
public TaglibVariable[] getTaglibVariables(String tagToAdd, IStructuredDocument structuredDoc, ITextRegionCollection customTag, List problems) {
List results = new ArrayList();
if (problems == null)
problems = new ArrayList();
ModelQuery mq = getModelQuery(structuredDoc);
if (mq != null) {
TLDCMDocumentManager mgr = TaglibController.getTLDCMDocumentManager(structuredDoc);
// TaglibSupport support = ((TaglibModelQuery)
// mq).getTaglibSupport();
if (mgr == null)
return new TaglibVariable[0];
List trackers = mgr.getCMDocumentTrackers(-1);
Iterator taglibs = trackers.iterator();
// TaglibSupport support = ((TaglibModelQuery)
// mq).getTaglibSupport();
// if (support == null)
// return new TaglibVariable[0];
//
// Iterator taglibs =
// support.getCMDocuments(customTag.getStartOffset()).iterator();
CMDocument doc = null;
CMNamedNodeMap elements = null;
while (taglibs.hasNext()) {
doc = (CMDocument) taglibs.next();
CMNode node = null;
if ((elements = doc.getElements()) != null && (node = elements.getNamedItem(tagToAdd)) != null && node.getNodeType() == CMNode.ELEMENT_DECLARATION) {
if (node instanceof CMNodeWrapper) {
node = ((CMNodeWrapper) node).getOriginNode();
}
TLDElementDeclaration tldElementDecl = (TLDElementDeclaration) node;
/*
* Although clearly not the right place to add validation
* design-wise, this is the first time we have the
* necessary information to validate the tag class.
*/
validateTagClass(structuredDoc, customTag, tldElementDecl, problems);
// 1.2+ taglib style
addVariables(results, node, customTag);
// for 1.1 need more info from taglib tracker
if (doc instanceof TaglibTracker) {
String uri = ((TaglibTracker) doc).getURI();
String prefix = ((TaglibTracker) doc).getPrefix();
// only for 1.1 taglibs
addTEIVariables(structuredDoc, customTag, results, tldElementDecl, prefix, uri, problems);
}
}
}
}
return (TaglibVariable[]) results.toArray(new TaglibVariable[results.size()]);
}
/**
* Adds 1.2 style TaglibVariables to the results list.
*
* @param results
* list where the <code>TaglibVariable</code> s are added
* @param node
*/
private void addVariables(List results, CMNode node, ITextRegionCollection customTag) {
List list = ((TLDElementDeclaration) node).getVariables();
Iterator it = list.iterator();
while (it.hasNext()) {
TLDVariable var = (TLDVariable) it.next();
if (!var.getDeclare())
continue;
String varName = var.getNameGiven();
if (varName == null) {
// 2.0
varName = var.getAlias();
}
if (varName == null) {
String attrName = var.getNameFromAttribute();
/*
* Iterate through the document region to find the
* corresponding attribute name, and then use its value
*/
ITextRegionList regions = customTag.getRegions();
boolean attrNameFound = false;
for (int i = 2; i < regions.size(); i++) {
ITextRegion region = regions.get(i);
if (DOMRegionContext.XML_TAG_ATTRIBUTE_NAME.equals(region.getType())) {
attrNameFound = attrName.equals(customTag.getText(region));
}
if (attrNameFound && DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE.equals(region.getType())) {
varName = StringUtils.strip(customTag.getText(region));
}
}
}
if (varName != null) {
String varClass = "java.lang.String"; // the default
// class...//$NON-NLS-1$
if (var.getVariableClass() != null) {
varClass = var.getVariableClass();
}
results.add(new TaglibVariable(varClass, varName, var.getScope(), var.getDescription()));
}
}
}
/**
* Adds 1.1 style TaglibVariables (defined in a TagExtraInfo class) to the
* results list. Also reports problems with the tag and tei classes in
* fTranslatorProblems.
*
* @param customTag
* @param results
* list where the <code>TaglibVariable</code> s are added
* @param decl
* TLDElementDeclaration for the custom tag
* @param prefix
* custom tag prefix
* @param uri
* URI where the tld can be found
*/
private void addTEIVariables(IStructuredDocument document, ITextRegionCollection customTag, List results, TLDElementDeclaration decl, String prefix, String uri, List problems) {
String teiClassname = decl.getTeiclass();
if (teiClassname == null || teiClassname.length() == 0 || fJavaProject == null || fNotFoundClasses.contains(teiClassname))
return;
ClassLoader loader = getClassloader();
Class teiClass = null;
try {
/*
* JDT could tell us about it, but loading and calling it would
* still take time
*/
teiClass = Class.forName(teiClassname, true, loader);
if (teiClass != null) {
Object teiObject = teiClass.newInstance();
if (TagExtraInfo.class.isInstance(teiObject)) {
TagExtraInfo tei = (TagExtraInfo) teiObject;
Hashtable tagDataTable = extractTagData(customTag);
TagInfo info = getTagInfo(decl, tei, prefix, uri);
if (info != null) {
tei.setTagInfo(info);
// add to results
TagData td = new TagData(tagDataTable);
VariableInfo[] vInfos = tei.getVariableInfo(td);
if (vInfos != null) {
for (int i = 0; i < vInfos.length; i++) {
results.add(new TaglibVariable(vInfos[i].getClassName(), vInfos[i].getVarName(), vInfos[i].getScope(), decl.getDescription()));
}
}
ValidationMessage[] messages = tei.validate(td);
if (messages != null && messages.length > 0) {
for (int i = 0; i < messages.length; i++) {
Object createdProblem = createValidationMessageProblem(document, customTag, messages[i].getMessage());
if (createdProblem != null) {
problems.add(createdProblem);
}
}
}
}
}
else {
Object createdProblem = createJSPProblem(document, customTag, IJSPProblem.TEIClassMisc, JSPCoreMessages.TaglibHelper_2, teiClassname, true);
if (createdProblem != null) {
problems.add(createdProblem);
}
// this is 3rd party code, need to catch all exceptions
if (DEBUG) {
Logger.log(Logger.WARNING, teiClassname + " is not a subclass of TaxExtraInfo"); //$NON-NLS-1$
}
}
}
}
catch (ClassNotFoundException e) {
//the class could not be found so add it to the cache
fNotFoundClasses.add(teiClassname);
Object createdProblem = createJSPProblem(document, customTag, IJSPProblem.TEIClassNotFound, JSPCoreMessages.TaglibHelper_0, teiClassname, true);
if (createdProblem != null) {
problems.add(createdProblem);
}
// TEI class wasn't on build path
if (DEBUG)
logException(teiClassname, e);
}
catch (InstantiationException e) {
Object createdProblem = createJSPProblem(document, customTag, IJSPProblem.TEIClassNotInstantiated, JSPCoreMessages.TaglibHelper_1, teiClassname, true);
if (createdProblem != null) {
problems.add(createdProblem);
}
// TEI class couldn't be instantiated
if (DEBUG)
logException(teiClassname, e);
}
catch (IllegalAccessException e) {
if (DEBUG)
logException(teiClassname, e);
}
// catch (ClassCastException e) {
// // TEI class wasn't really a subclass of TagExtraInfo
// if (DEBUG)
// logException(teiClassname, e);
// }
catch (Exception e) {
Object createdProblem = createJSPProblem(document, customTag, IJSPProblem.TEIClassMisc, JSPCoreMessages.TaglibHelper_2, teiClassname, true);
if (createdProblem != null) {
problems.add(createdProblem);
}
// this is 3rd party code, need to catch all exceptions
if (DEBUG)
logException(teiClassname, e);
}
catch (Error e) {
// this is 3rd party code, need to catch all errors
Object createdProblem = createJSPProblem(document, customTag, IJSPProblem.TEIClassNotInstantiated, JSPCoreMessages.TaglibHelper_1, teiClassname, true);
if (createdProblem != null) {
problems.add(createdProblem);
}
if (DEBUG)
logException(teiClassname, e);
}
finally {
// Thread.currentThread().setContextClassLoader(oldLoader);
}
}
/**
* @param customTag
* @param teiClass
* @return
*/
private Object createJSPProblem(final IStructuredDocument document, final ITextRegionCollection customTag, final int problemID, final String messageKey, final String argument, boolean preferVars) {
final String tagname = customTag.getText(customTag.getRegions().get(1));
final int start;
if (customTag.getNumberOfRegions() > 1) {
start = customTag.getStartOffset(customTag.getRegions().get(1));
}
else {
start = customTag.getStartOffset();
}
final int end;
if (customTag.getNumberOfRegions() > 1) {
end = customTag.getTextEndOffset(customTag.getRegions().get(1)) - 1;
}
else {
end = customTag.getTextEndOffset() - 1;
}
final int line = document.getLineOfOffset(start);
final char[] name;
IPath location = TaglibController.getLocation(document);
if (location == null) {
name = new char[0];
}
else {
name = location.toString().toCharArray();
}
/*
* Note: these problems would result in translation errors on the
* server, so the severity is not meant to be controllable
*/
return new IJSPProblem() {
public void setSourceStart(int sourceStart) {
}
public void setSourceLineNumber(int lineNumber) {
}
public void setSourceEnd(int sourceEnd) {
}
public boolean isWarning() {
return false;
}
public boolean isError() {
return true;
}
public int getSourceStart() {
return start;
}
public int getSourceLineNumber() {
return line;
}
public int getSourceEnd() {
return end;
}
public char[] getOriginatingFileName() {
return name;
}
public String getMessage() {
return MessageFormat.format(messageKey, new String[]{tagname, argument});
}
public int getID() {
return problemID;
}
public String[] getArguments() {
return new String[0];
}
public int getEID() {
return problemID;
}
};
}
/**
* @param customTag
* @param validationMessage
* @return
*/
private Object createValidationMessageProblem(final IStructuredDocument document, final ITextRegionCollection customTag, final String validationMessage) {
final int start;
if (customTag.getNumberOfRegions() > 3) {
start = customTag.getStartOffset(customTag.getRegions().get(2));
}
else if (customTag.getNumberOfRegions() > 1) {
start = customTag.getStartOffset(customTag.getRegions().get(1));
}
else {
start = customTag.getStartOffset();
}
final int end;
if (customTag.getNumberOfRegions() > 3) {
end = customTag.getTextEndOffset(customTag.getRegions().get(customTag.getNumberOfRegions() - 2)) - 1;
}
else if (customTag.getNumberOfRegions() > 1) {
end = customTag.getTextEndOffset(customTag.getRegions().get(1)) - 1;
}
else {
end = customTag.getTextEndOffset();
}
final int line = document.getLineOfOffset(start);
final char[] name;
IPath location = TaglibController.getLocation(document);
if (location == null) {
name = new char[0];
}
else {
name = location.toString().toCharArray();
}
return new IJSPProblem() {
public void setSourceStart(int sourceStart) {
}
public void setSourceLineNumber(int lineNumber) {
}
public void setSourceEnd(int sourceEnd) {
}
public boolean isWarning() {
return true;
}
public boolean isError() {
return false;
}
public int getSourceStart() {
return start;
}
public int getSourceLineNumber() {
return line;
}
public int getSourceEnd() {
return end;
}
public char[] getOriginatingFileName() {
return name;
}
public String getMessage() {
return validationMessage;
}
public int getID() {
return getEID();
}
public String[] getArguments() {
return new String[0];
}
public int getEID() {
return IJSPProblem.TEIValidationMessage;
}
};
}
/**
* @param decl
* @return the TagInfo for the TLDELementDeclaration if the declaration is
* valid, otherwise null
*/
private TagInfo getTagInfo(final TLDElementDeclaration decl, TagExtraInfo tei, String prefix, String uri) {
TagLibraryInfo libInfo = new TagLibraryInfoImpl(prefix, uri, decl);
CMNamedNodeMap attrs = decl.getAttributes();
TagAttributeInfo[] attrInfos = new TagAttributeInfo[attrs.getLength()];
TLDAttributeDeclaration attr = null;
String type = ""; //$NON-NLS-1$
// get tag attribute infos
for (int i = 0; i < attrs.getLength(); i++) {
attr = (TLDAttributeDeclaration) attrs.item(i);
type = attr.getType();
// default value for type is String
if (attr.getType() == null || attr.getType().equals("")) //$NON-NLS-1$
type = "java.lang.String"; //$NON-NLS-1$
attrInfos[i] = new TagAttributeInfo(attr.getAttrName(), attr.isRequired(), type, false);
}
String tagName = decl.getNodeName();
String tagClass = decl.getTagclass();
String bodyContent = decl.getBodycontent();
if (tagName != null && tagClass != null && bodyContent != null)
return new TagInfo(tagName, tagClass, bodyContent, decl.getInfo(), libInfo, tei, attrInfos);
return null;
}
/**
* @param e
*/
private void logException(String teiClassname, Throwable e) {
String message = "teiClassname: ["; //$NON-NLS-1$
if (teiClassname != null)
message += teiClassname;
message += "]"; //$NON-NLS-1$
Logger.logException(message, e);
}
/**
* Returns all attribute -> value pairs for the tag in a Hashtable.
*
* @param customTag
* @return
*/
private Hashtable extractTagData(ITextRegionCollection customTag) {
Hashtable tagDataTable = new Hashtable();
ITextRegionList regions = customTag.getRegions();
ITextRegion r = null;
String attrName = ""; //$NON-NLS-1$
String attrValue = ""; //$NON-NLS-1$
final int size = regions.size();
for (int i = 2; i < size; i++) {
r = regions.get(i);
// check if attr name
if (r.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_NAME) {
attrName = customTag.getText(r);
// check equals is next region
if (size > ++i) {
r = regions.get(i);
if (r.getType() == DOMRegionContext.XML_TAG_ATTRIBUTE_EQUALS && size > ++i) {
// get attr value
r = regions.get(i);
final String type = r.getType();
if (type == DOMRegionContext.XML_TAG_ATTRIBUTE_VALUE) {
// attributes in our document have quotes, so we
// need to strip them
attrValue = StringUtils.stripQuotes(customTag.getText(r));
tagDataTable.put(attrName, attrValue);
}
else if (type == DOMJSPRegionContexts.JSP_TAG_ATTRIBUTE_VALUE_DQUOTE || type == DOMJSPRegionContexts.JSP_TAG_ATTRIBUTE_VALUE_SQUOTE) {
final StringBuffer buffer = new StringBuffer();
while (size > ++i && (r = regions.get(i)).getType() != type) {
buffer.append(customTag.getText(r));
}
tagDataTable.put(attrName, buffer.toString());
}
}
}
}
}
tagDataTable.put("jsp:id", customTag.getText(regions.get(1)) + "_" + customTag.getStartOffset()); //$NON-NLS-1$
return tagDataTable;
}
private ClassLoader getClassloader() {
if (fLoader == null) {
fLoader = new BuildPathClassLoader(this.getClass().getClassLoader(), fJavaProject);
}
return fLoader;
}
/**
* @return Returns the fModelQuery.
*/
public ModelQuery getModelQuery(IDocument doc) {
IStructuredModel model = null;
ModelQuery mq = null;
try {
model = StructuredModelManager.getModelManager().getExistingModelForRead(doc);
mq = ModelQueryUtil.getModelQuery(model);
}
finally {
if (model != null)
model.releaseFromRead();
}
return mq;
}
/**
* @return Returns the fFile.
*/
public IProject getProject() {
return fProject;
}
/**
* @param file
* The fFile to set.
*/
public void setProject(IProject p) {
fProject = p;
IJavaProject javaProject = JavaCore.create(p);
if (javaProject.exists()) {
fJavaProject = javaProject;
}
}
private void validateTagClass(IStructuredDocument document, ITextRegionCollection customTag, TLDElementDeclaration decl, List problems) {
// skip if from a tag file
if (TLDElementDeclaration.SOURCE_TAG_FILE.equals(decl.getProperty(TLDElementDeclaration.TAG_SOURCE)) || fJavaProject == null) {
return;
}
String tagClassname = decl.getTagclass();
Object tagClass = null;
if (tagClassname != null && tagClassname.length() > 0 && fJavaProject.exists()) {
try {
tagClass = fJavaProject.findType(tagClassname);
}
catch (JavaModelException e) {
Logger.logException(e);
}
}
if (tagClass == null) {
Object createdProblem = createJSPProblem(document, customTag, IJSPProblem.TagClassNotFound, JSPCoreMessages.TaglibHelper_3, tagClassname, false);
if (createdProblem != null) {
problems.add(createdProblem);
}
}
}
/**
*
*/
public void dispose() {
fLoader = null;
fJavaProject = null;
fProject = null;
fNotFoundClasses = null;
fClassMap = null;
fMemoryListener.disconnect();
fMemoryListener = null;
}
public void invalidateClass(String className) {
fClassMap.remove(className);
}
/**
* <p>A {@link AbstractMemoryListener} that clears the {@link #fNotFoundClasses} cache
* whenever specific memory events are received.</p>
*
* <p>Events:
* <ul>
* <li>{@link AbstractMemoryListener#SEV_NORMAL}</li>
* <li>{@link AbstractMemoryListener#SEV_SERIOUS}</li>
* <li>{@link AbstractMemoryListener#SEV_CRITICAL}</li>
* </ul>
* </p>
*/
private class MemoryListener extends AbstractMemoryListener {
/**
* <p>Constructor causes this listener to listen for specific memory events.</p>
* <p>Events:
* <ul>
* <li>{@link AbstractMemoryListener#SEV_NORMAL}</li>
* <li>{@link AbstractMemoryListener#SEV_SERIOUS}</li>
* <li>{@link AbstractMemoryListener#SEV_CRITICAL}</li>
* </ul>
* </p>
*/
MemoryListener() {
super(new String[] { SEV_NORMAL, SEV_SERIOUS, SEV_CRITICAL });
}
/**
* On any memory event we handle clear out the project descriptions
*
* @see org.eclipse.jst.jsp.core.internal.util.AbstractMemoryListener#handleMemoryEvent(org.osgi.service.event.Event)
*/
protected void handleMemoryEvent(Event event) {
/* if running low on memory then this cache can be cleared
* and rebuilt at the expense of processing time
*/
fNotFoundClasses.clear();
fClassMap.clear();
}
}
class TagLibraryInfoImpl extends TagLibraryInfo {
TLDElementDeclaration decl;
TagLibraryInfoImpl(String prefix, String uri, TLDElementDeclaration decl){
super(prefix, uri);
this.decl = decl;
}
public String getURI() {
if (Platform.inDebugMode())
new NotImplementedException().printStackTrace();
return super.getURI();
}
public String getPrefixString() {
if (Platform.inDebugMode())
new NotImplementedException().printStackTrace();
return super.getPrefixString();
}
public String getShortName() {
return ((TLDDocument)decl.getOwnerDocument()).getShortname();
}
public String getReliableURN() {
return ((TLDDocument)decl.getOwnerDocument()).getUri();
}
public String getInfoString() {
return ((TLDDocument)decl.getOwnerDocument()).getInfo();
}
public String getRequiredVersion() {
return ((TLDDocument)decl.getOwnerDocument()).getJspversion();
}
public TagInfo[] getTags() {
if (Platform.inDebugMode())
new NotImplementedException().printStackTrace();
return super.getTags();
}
public TagFileInfo[] getTagFiles() {
if (Platform.inDebugMode())
new NotImplementedException().printStackTrace();
return super.getTagFiles();
}
public TagInfo getTag(String shortname) {
if (Platform.inDebugMode())
new NotImplementedException().printStackTrace();
return super.getTag(shortname);
}
public TagFileInfo getTagFile(String shortname) {
if (Platform.inDebugMode())
new NotImplementedException().printStackTrace();
return super.getTagFile(shortname);
}
public FunctionInfo[] getFunctions() {
if (Platform.inDebugMode())
new NotImplementedException().printStackTrace();
return super.getFunctions();
}
public FunctionInfo getFunction(String name) {
new NotImplementedException(name).printStackTrace();
return super.getFunction(name);
}
public TagLibraryInfo[] getTagLibraryInfos() {
if (Platform.inDebugMode())
new NotImplementedException().printStackTrace();
return new TagLibraryInfo[] { this };
}
}
}