| /* |
| * Copyright 2008 Google Inc. |
| * |
| * 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.google.gwt.dev.jjs.impl; |
| |
| import com.google.gwt.dev.jjs.ast.Context; |
| import com.google.gwt.dev.jjs.ast.JAssertStatement; |
| import com.google.gwt.dev.jjs.ast.JBlock; |
| import com.google.gwt.dev.jjs.ast.JModVisitor; |
| import com.google.gwt.dev.jjs.ast.JProgram; |
| import com.google.gwt.dev.jjs.ast.JStatement; |
| import com.google.gwt.dev.util.log.speedtracer.CompilerEventType; |
| import com.google.gwt.dev.util.log.speedtracer.SpeedTracerLogger; |
| import com.google.gwt.dev.util.log.speedtracer.SpeedTracerLogger.Event; |
| |
| /** |
| * Removes all assertion statements from the AST. |
| */ |
| public class AssertionRemover { |
| |
| /** |
| * Removes all asserts. |
| */ |
| private static class AssertRemoveVisitor extends JModVisitor { |
| |
| @Override |
| public void endVisit(JAssertStatement x, Context ctx) { |
| removeMe(x, ctx); |
| } |
| |
| private void removeMe(JStatement stmt, Context ctx) { |
| if (ctx.canRemove()) { |
| ctx.removeMe(); |
| } else { |
| // empty block statement |
| ctx.replaceMe(new JBlock(stmt.getSourceInfo())); |
| } |
| } |
| } |
| |
| public static void exec(JProgram program) { |
| Event assertionRemoverEvent = SpeedTracerLogger.start(CompilerEventType.ASSERTION_REMOVER); |
| new AssertionRemover(program).execImpl(); |
| assertionRemoverEvent.end(); |
| } |
| |
| private final JProgram program; |
| |
| public AssertionRemover(JProgram program) { |
| this.program = program; |
| } |
| |
| private void execImpl() { |
| AssertRemoveVisitor assertRemover = new AssertRemoveVisitor(); |
| assertRemover.accept(program); |
| } |
| } |