| /* |
| * Copyright 2000-2014 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.psi.search; |
| |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.regex.Pattern; |
| import java.util.regex.PatternSyntaxException; |
| |
| /** |
| * A single pattern the occurrences of which in comments are indexed by IDEA. |
| * |
| * @author yole |
| * @since 5.1 |
| * @see IndexPatternProvider#getIndexPatterns() |
| */ |
| public class IndexPattern { |
| @NotNull private String myPatternString; |
| private Pattern myOptimizedIndexingPattern; |
| private boolean myCaseSensitive; |
| private Pattern myPattern; |
| |
| /** |
| * Creates an instance of an index pattern. |
| * |
| * @param patternString the text of the Java regular expression to match. |
| * @param caseSensitive whether the regular expression should be case-sensitive. |
| */ |
| public IndexPattern(@NotNull String patternString, final boolean caseSensitive) { |
| myPatternString = patternString; |
| myCaseSensitive = caseSensitive; |
| compilePattern(); |
| } |
| |
| @NotNull |
| public String getPatternString() { |
| return myPatternString; |
| } |
| |
| public @Nullable Pattern getPattern() { |
| return myPattern; |
| } |
| |
| public @Nullable Pattern getOptimizedIndexingPattern() { |
| return myOptimizedIndexingPattern; |
| } |
| |
| public boolean isCaseSensitive() { |
| return myCaseSensitive; |
| } |
| |
| public void setPatternString(@NotNull final String patternString) { |
| myPatternString = patternString; |
| compilePattern(); |
| } |
| |
| public void setCaseSensitive(final boolean caseSensitive) { |
| myCaseSensitive = caseSensitive; |
| compilePattern(); |
| } |
| |
| private void compilePattern() { |
| try { |
| int flags = 0; |
| if (!myCaseSensitive) { |
| flags = Pattern.CASE_INSENSITIVE; |
| } |
| myPattern = Pattern.compile(myPatternString, flags); |
| String optimizedPattern = myPatternString; |
| if (optimizedPattern.startsWith(".*")) { |
| optimizedPattern = optimizedPattern.substring(".*".length()); |
| } |
| myOptimizedIndexingPattern = Pattern.compile(optimizedPattern, flags); |
| } |
| catch(PatternSyntaxException e){ |
| myPattern = null; |
| myOptimizedIndexingPattern = null; |
| } |
| } |
| |
| @Override |
| public boolean equals(final Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| |
| final IndexPattern that = (IndexPattern)o; |
| |
| if (myCaseSensitive != that.myCaseSensitive) return false; |
| if (!myPatternString.equals(that.myPatternString)) return false; |
| |
| return true; |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = myPatternString.hashCode(); |
| result = 29 * result + (myCaseSensitive ? 1 : 0); |
| return result; |
| } |
| } |