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Declarative Machine Learning
/*
* 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.sysml.parser;
public abstract class LiveVariableAnalysis
{
VariableSet _read;
VariableSet _updated;
VariableSet _gen;
VariableSet _kill;
VariableSet _liveIn;
VariableSet _liveOut;
boolean _initialized = false;
VariableSet _warnSet; // variables that may not be initialized
// applicable for control blocks
public VariableSet variablesRead(){
return _read;
}
public VariableSet variablesUpdated() {
return _updated;
}
public VariableSet getWarn(){
return _warnSet;
}
public VariableSet liveIn() {
return _liveIn;
}
public VariableSet liveOut() {
return _liveOut;
}
public VariableSet getKill(){
return _kill;
}
public VariableSet getGen(){
return _gen;
}
public void setLiveOut(VariableSet lo) {
_liveOut = lo;
}
public void setLiveIn(VariableSet li) {
_liveIn = li;
}
public void setKill(VariableSet ki) {
_kill = ki;
}
public void setGen(VariableSet ge) {
_gen = ge;
}
public void setUpdatedVariables( VariableSet vars ){
_updated = vars;
}
public void setReadVariables( VariableSet vars ){
_read = vars;
}
public abstract VariableSet initializeforwardLV(VariableSet activeIn) throws LanguageException;
public abstract VariableSet initializebackwardLV(VariableSet loPassed) throws LanguageException;
public abstract VariableSet analyze(VariableSet loPassed) throws LanguageException;
public void updateLiveVariablesOut(VariableSet liveOut){
updateLiveVariables(_liveOut,liveOut);
}
private static void updateLiveVariables(VariableSet origVars, VariableSet newVars){
for (String var : newVars.getVariables().keySet()){
if (origVars.containsVariable(var)){
DataIdentifier varId = newVars.getVariable(var);
if (varId != null){
origVars.addVariable(var, varId);
}
}
}
}
}