com.google.gwt.dev.jjs.impl.AssertionRemover Maven / Gradle / Ivy
/*
* 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);
}
}