| /******************************************************************************* |
| * Copyright (c) 2018 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.jdt.core.manipulation; |
| |
| import java.util.Collection; |
| import java.util.StringTokenizer; |
| import java.util.regex.Pattern; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.preferences.DefaultScope; |
| import org.eclipse.core.runtime.preferences.IEclipsePreferences; |
| import org.eclipse.core.runtime.preferences.InstanceScope; |
| |
| import org.eclipse.jdt.core.IAccessRule; |
| import org.eclipse.jdt.core.JavaCore; |
| import org.eclipse.jdt.core.search.TypeNameMatch; |
| import org.eclipse.jdt.core.search.TypeNameMatchRequestor; |
| |
| /** |
| * @since 1.10 |
| */ |
| public class TypeNameMatchCollector extends TypeNameMatchRequestor { |
| |
| private final Collection<TypeNameMatch> fCollection; |
| private Pattern[] fStringMatchers; |
| |
| public TypeNameMatchCollector(Collection<TypeNameMatch> collection) { |
| Assert.isNotNull(collection); |
| fCollection= collection; |
| } |
| |
| private boolean inScope(TypeNameMatch match) { |
| return ! isFiltered(match); |
| } |
| |
| private boolean isFiltered(TypeNameMatch match) { |
| boolean filteredByPattern= filter(match.getFullyQualifiedName()); |
| if (filteredByPattern) |
| return true; |
| |
| int accessibility= match.getAccessibility(); |
| switch (accessibility) { |
| case IAccessRule.K_NON_ACCESSIBLE: |
| return JavaCore.ENABLED.equals(JavaCore.getOption(JavaCore.CODEASSIST_FORBIDDEN_REFERENCE_CHECK)); |
| case IAccessRule.K_DISCOURAGED: |
| return JavaCore.ENABLED.equals(JavaCore.getOption(JavaCore.CODEASSIST_DISCOURAGED_REFERENCE_CHECK)); |
| default: |
| return false; |
| } |
| } |
| |
| private boolean filter(String fullTypeName) { |
| Pattern[] matchers= getStringMatchers(); |
| for (int i= 0; i < matchers.length; i++) { |
| Pattern curr= matchers[i]; |
| if (curr.matcher(fullTypeName).matches()) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private synchronized Pattern[] getStringMatchers() { |
| if (fStringMatchers == null) { |
| String str= getPreference("org.eclipse.jdt.ui.typefilter.enabled"); //$NON-NLS-1$ |
| StringTokenizer tok= new StringTokenizer(str, ";"); //$NON-NLS-1$ |
| int nTokens= tok.countTokens(); |
| |
| fStringMatchers= new Pattern[nTokens]; |
| for (int i= 0; i < nTokens; i++) { |
| String curr= tok.nextToken(); |
| if (curr.length() > 0) { |
| // Simulate '*', and '?' wildcards using '.*' and '.' |
| curr = curr.replaceAll("\\*", ".*"); //$NON-NLS-1$ //$NON-NLS-2$ |
| curr = curr.replaceAll("\\?", "."); //$NON-NLS-1$ //$NON-NLS-2$ |
| fStringMatchers[i]= Pattern.compile(curr); |
| } |
| } |
| } |
| return fStringMatchers; |
| } |
| |
| @Override |
| public void acceptTypeNameMatch(TypeNameMatch match) { |
| if (inScope(match)) { |
| fCollection.add(match); |
| } |
| } |
| |
| private static String getPreference(String key) { |
| String val; |
| IEclipsePreferences node= InstanceScope.INSTANCE.getNode(JavaManipulation.getPreferenceNodeId()); |
| if (node != null) { |
| val= node.get(key, null); |
| if (val != null) { |
| return val; |
| } |
| } |
| node= DefaultScope.INSTANCE.getNode(JavaManipulation.getPreferenceNodeId()); |
| if (node != null) { |
| return node.get(key, null); |
| } |
| return null; |
| } |
| |
| } |