| /* |
| * 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.apache.myfaces.buildtools.maven2.plugin.javascript.obfuscator.filters.obfuscation.state; |
| |
| import org.apache.myfaces.buildtools.maven2.plugin.javascript.obfuscator.javascript15parser.AnnotatedToken; |
| import org.apache.myfaces.buildtools.maven2.plugin.javascript.obfuscator.javascript15parser.NameGen; |
| import org.apache.myfaces.buildtools.maven2.plugin.javascript.obfuscator.javascript15parser.ProgramContext; |
| import org.apache.myfaces.buildtools.maven2.plugin.javascript.obfuscator.javascript15parser.ProgramContextStack; |
| |
| |
| public class StatementBlockState extends ObfuscationState |
| { |
| static private StatementBlockState _instance; |
| |
| private StatementBlockState() |
| { |
| } |
| |
| static public StatementBlockState getInstance() |
| { |
| if (_instance == null) |
| { |
| synchronized (StatementBlockState.class) |
| { |
| if (_instance == null) |
| { |
| _instance = new StatementBlockState(); |
| } |
| } |
| } |
| |
| return _instance; |
| } |
| |
| public AnnotatedToken enterState(ProgramContextStack contextStack, |
| AnnotatedToken startToken, NameGen nameGen) |
| { |
| // do not create a new context in a statement block. JavaScript does not use a new scope in a |
| // statement block |
| AnnotatedToken token = startToken.getNext(); |
| |
| return processCodeBlock(contextStack, token); |
| } |
| |
| public void exitState(ProgramContextStack contextStack) |
| { |
| // do not pop context |
| } |
| |
| protected void processVarIdentifier(ProgramContextStack contextStack, |
| AnnotatedToken token) |
| { |
| ProgramContext blockContext = (ProgramContext) contextStack.peek(); |
| |
| // normal processing for functions that do not use eval() calls |
| if (!(blockContext instanceof FunctionContext) || |
| (blockContext instanceof FunctionContext && |
| ((FunctionContext) blockContext).canObfuscateLocalVars())) |
| { |
| super.processVarIdentifier(contextStack, token); |
| } |
| } |
| } |