com.google.gwt.dev.jjs.impl.codesplitter.CfaLivenessPredicate Maven / Gradle / Ivy
/*
* Copyright 2013 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.codesplitter;
import com.google.gwt.dev.jjs.ast.JDeclaredType;
import com.google.gwt.dev.jjs.ast.JField;
import com.google.gwt.dev.jjs.ast.JMethod;
import com.google.gwt.dev.jjs.impl.ControlFlowAnalyzer;
/**
* A {@link LivenessPredicate} that bases liveness on a single
* {@link com.google.gwt.dev.jjs.impl.ControlFlowAnalyzer}.
*/
public class CfaLivenessPredicate implements LivenessPredicate {
private final ControlFlowAnalyzer cfa;
public CfaLivenessPredicate(ControlFlowAnalyzer cfa) {
this.cfa = cfa;
}
@Override
public boolean isLive(JDeclaredType type) {
return cfa.getInstantiatedTypes().contains(type);
}
@Override
public boolean isLive(JField field) {
return cfa.getLiveFieldsAndMethods().contains(field)
|| cfa.getFieldsWritten().contains(field);
}
@Override
public boolean isLive(JMethod method) {
return cfa.getLiveFieldsAndMethods().contains(method);
}
@Override
public boolean isLive(String string) {
return cfa.getLiveStrings().contains(string);
}
@Override
public boolean miscellaneousStatementsAreLive() {
return true;
}
}