| /******************************************************************************* |
| * Copyright (c) 2005, 2010 BEA Systems 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: |
| * BEA Systems - initial implementation |
| * IBM Corporation - Bug 298304 User-configurable severities for EL problems |
| * |
| *******************************************************************************/ |
| |
| package org.eclipse.jst.jsp.core.internal.java.jspel; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| |
| import org.eclipse.core.filebuffers.ITextFileBuffer; |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.resources.ProjectScope; |
| import org.eclipse.core.resources.ResourcesPlugin; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.core.runtime.preferences.DefaultScope; |
| import org.eclipse.core.runtime.preferences.IScopeContext; |
| import org.eclipse.core.runtime.preferences.InstanceScope; |
| import org.eclipse.jface.text.Position; |
| import org.eclipse.jst.jsp.core.internal.JSPCoreMessages; |
| import org.eclipse.jst.jsp.core.internal.JSPCorePlugin; |
| import org.eclipse.jst.jsp.core.internal.preferences.JSPCorePreferenceNames; |
| import org.eclipse.jst.jsp.core.jspel.ELProblem; |
| import org.eclipse.jst.jsp.core.jspel.IJSPELTranslator; |
| import org.eclipse.wst.sse.core.internal.FileBufferModelManager; |
| import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument; |
| import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocumentRegion; |
| import org.eclipse.wst.sse.core.internal.validate.ValidationMessage; |
| import org.eclipse.wst.validation.internal.provisional.core.IMessage; |
| |
| |
| public class JSPELTranslator implements IJSPELTranslator { |
| |
| private static final String PREFERENCE_NODE_QUALIFIER = JSPCorePlugin.getDefault().getBundle().getSymbolicName(); |
| /** |
| * JSP Expression Language Parser. |
| */ |
| private JSPELParser elParser = null; |
| |
| public List translateEL(String elText, String delim, |
| IStructuredDocumentRegion currentNode, int contentStart, |
| int contentLength, StringBuffer fUserELExpressions, |
| HashMap fUserELRanges, IStructuredDocument document) { |
| |
| ArrayList elProblems = new ArrayList(); |
| |
| try { |
| synchronized(this) { |
| if(null == elParser) { |
| elParser = JSPELParser.createParser(elText); |
| } else { |
| elParser.ReInit(elText); |
| } |
| |
| ASTExpression expression = elParser.Expression(); |
| ELGenerator gen = new ELGenerator(); |
| List generatorELProblems = gen.generate(expression, currentNode, fUserELExpressions, fUserELRanges, document, currentNode, contentStart, contentLength); |
| elProblems.addAll(generatorELProblems); |
| } |
| } catch (ParseException e) { |
| final int sev = getProblemSeverity(JSPCorePreferenceNames.VALIDATION_EL_SYNTAX, getScopeContexts(document)); |
| if (sev != ValidationMessage.IGNORE) { |
| Token curTok = e.currentToken; |
| int problemStartOffset; |
| int problemEndOffset; |
| Position pos = null; |
| problemStartOffset = contentStart + curTok.beginColumn; |
| problemEndOffset = contentStart + curTok.endColumn; |
| |
| pos = new Position(problemStartOffset, problemEndOffset - problemStartOffset + 1); |
| elProblems.add(new ELProblem(sev, pos, e.getLocalizedMessage())); |
| } |
| } catch (TokenMgrError te) { |
| int sev = getProblemSeverity(JSPCorePreferenceNames.VALIDATION_EL_LEXER, getScopeContexts(document)); |
| if (sev != ValidationMessage.IGNORE) { |
| Position pos = new Position(contentStart, contentLength); |
| elProblems.add(new ELProblem(sev, pos, JSPCoreMessages.JSPEL_Token)); |
| } |
| } |
| return elProblems; |
| } |
| |
| /** |
| * @param key preference key used to get the severity for a problem |
| * @param contexts preference service contexts |
| * @return The severity of the problem represented by the given preference key |
| */ |
| private int getProblemSeverity(String key, IScopeContext[] contexts) { |
| return Platform.getPreferencesService().getInt(PREFERENCE_NODE_QUALIFIER, key, IMessage.NORMAL_SEVERITY, contexts); |
| } |
| |
| private IScopeContext[] getScopeContexts(IStructuredDocument document) { |
| IScopeContext[] scopes = new IScopeContext[]{new InstanceScope(), new DefaultScope()}; |
| final IFile file = getFile(document); |
| if (file != null && file.exists()) { |
| final IProject project = file.getProject(); |
| if (project.exists()) { |
| ProjectScope projectScope = new ProjectScope(project); |
| if (projectScope.getNode(PREFERENCE_NODE_QUALIFIER).getBoolean(JSPCorePreferenceNames.VALIDATION_USE_PROJECT_SETTINGS, false)) { |
| scopes = new IScopeContext[]{projectScope, new InstanceScope(), new DefaultScope()}; |
| } |
| } |
| } |
| return scopes; |
| } |
| |
| private IFile getFile(IStructuredDocument document) { |
| IFile f = null; |
| final ITextFileBuffer buffer = FileBufferModelManager.getInstance().getBuffer(document); |
| if (buffer != null) { |
| final IPath path = buffer.getLocation(); |
| if (path.segmentCount() > 1) { |
| f = ResourcesPlugin.getWorkspace().getRoot().getFile(path); |
| } |
| if (f != null && f.isAccessible()) { |
| return f; |
| } |
| } |
| return null; |
| } |
| } |