| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.netbeans.lib.java.lexer; |
| |
| import java.io.File; |
| import java.io.FileReader; |
| import java.nio.CharBuffer; |
| import org.netbeans.api.java.lexer.JavaTokenId; |
| import org.netbeans.api.lexer.Language; |
| import org.netbeans.api.lexer.TokenHierarchy; |
| import org.netbeans.api.lexer.TokenSequence; |
| import org.netbeans.junit.NbTestCase; |
| import org.netbeans.lib.lexer.test.ModificationTextDocument; |
| |
| /** |
| * This is a test that scans the source that is a copy of javax.swing.JComponent |
| * and reports the times of creation of all the tokens. It exists |
| * mainly because it's easy to run profiler over it. |
| * |
| * @author mmetelka |
| */ |
| public class JavaLexerPerformanceTest extends NbTestCase { |
| |
| public JavaLexerPerformanceTest(String testName) { |
| super(testName); |
| } |
| |
| protected void setUp() throws java.lang.Exception { |
| // Set-up testing environment |
| // Disable for performance testing |
| // LexerTestUtilities.setTesting(true); |
| } |
| |
| protected void tearDown() throws java.lang.Exception { |
| } |
| |
| private static final int PREPARE_COUNT = 10; |
| |
| public void testAString() throws Exception { |
| String text = readJComponentFile(); |
| // Possibly some extra prepare runs |
| int prepareTokenCount = 0; |
| for (int i = 0; i < PREPARE_COUNT; i++) { prepareTokenCount += prepareTestAString(text); } |
| |
| TokenHierarchy<?> hi = TokenHierarchy.create(text, JavaTokenId.language()); |
| TokenSequence<?> ts = hi.tokenSequence(); |
| long tm = System.currentTimeMillis(); |
| // Force all the tokens to be initialized |
| int tokenCount = 0; |
| while (ts.moveNext()) { tokenCount++; } |
| tm = System.currentTimeMillis() - tm; |
| System.err.println("TH over String: " + tokenCount + " tokens created in " + tm |
| + " ms over text with " + text.length() + " chars; prepareTokenCount=" |
| + prepareTokenCount + "."); |
| } |
| |
| public void testDocument() throws Exception { |
| String text = readJComponentFile(); |
| // Possibly some extra prepare runs |
| int prepareTokenCount = 0; |
| for (int i = 0; i < PREPARE_COUNT; i++) { prepareTokenCount += prepareTestDocument(text); } |
| |
| // Create the document and token hierarchy again and measure time |
| ModificationTextDocument doc = new ModificationTextDocument(); |
| doc.insertString(0, text, null); |
| doc.putProperty(Language.class, JavaTokenId.language()); |
| TokenHierarchy<?> hi = TokenHierarchy.get(doc); |
| TokenSequence<?> ts = hi.tokenSequence(); |
| long tm = System.currentTimeMillis(); |
| int tokenCount = 0; |
| // Force all the tokens to be initialized |
| while (ts.moveNext()) { tokenCount++; } |
| tm = System.currentTimeMillis() - tm; |
| System.err.println("TH over Swing Document: " + tokenCount + " tokens created in " + tm |
| + " ms over document with " + doc.getLength() + " chars; prepareTokenCount=" |
| + prepareTokenCount + "."); |
| } |
| |
| private int prepareTestAString(String text) throws Exception { |
| TokenHierarchy<?> hi = TokenHierarchy.create(text, JavaTokenId.language()); |
| TokenSequence<?> ts = hi.tokenSequence(); |
| int tokenCount = 0; |
| while (ts.moveNext()) { tokenCount++; } |
| return tokenCount; |
| } |
| |
| private int prepareTestDocument(String text) throws Exception { |
| ModificationTextDocument doc = new ModificationTextDocument(); |
| doc.insertString(0, text, null); |
| doc.putProperty(Language.class, JavaTokenId.language()); |
| TokenHierarchy<?> hi = TokenHierarchy.get(doc); |
| TokenSequence<?> ts = hi.tokenSequence(); |
| int tokenCount = 0; |
| while (ts.moveNext()) { tokenCount++; } |
| return tokenCount; |
| } |
| |
| private String readJComponentFile() throws Exception { |
| File testJComponentFile = new File(getDataDir() + "/testfiles/JComponent.java.txt"); |
| FileReader r = new FileReader(testJComponentFile); |
| try { |
| int fileLen = (int)testJComponentFile.length(); |
| CharBuffer cb = CharBuffer.allocate(fileLen); |
| r.read(cb); |
| cb.rewind(); |
| return cb.toString(); |
| } finally { |
| r.close(); |
| } |
| } |
| |
| } |