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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;
import java.util.ArrayList;
import org.apache.sysml.lops.Lop;
public class FunctionStatement extends Statement
{
private ArrayList _body;
protected String _name;
protected ArrayList _inputParams;
protected ArrayList _outputParams;
public Statement rewriteStatement(String prefix) throws LanguageException{
LOG.error(this.printErrorLocation() + "should not call rewriteStatement for FunctionStatement");
throw new LanguageException(this.printErrorLocation() + "should not call rewriteStatement for FunctionStatement");
}
public FunctionStatement(){
_body = new ArrayList();
_name = null;
_inputParams = new ArrayList();
_outputParams = new ArrayList();
}
public ArrayList getInputParams(){
return _inputParams;
}
public ArrayList getOutputParams(){
return _outputParams;
}
public void setInputParams(ArrayList inputParams){
_inputParams = inputParams;
}
public void setOutputParams(ArrayList outputParams){
_outputParams = outputParams;
}
public void setName(String fname){
_name = fname;
}
public String getName(){
return _name;
}
public void addStatementBlock(StatementBlock sb){
_body.add(sb);
}
public ArrayList getBody(){
return _body;
}
public void setBody(ArrayList body){
_body = body;
}
@Override
public boolean controlStatement() {
return true;
}
public void mergeStatementBlocks(){
_body = StatementBlock.mergeStatementBlocks(_body);
}
public String toString(){
StringBuilder sb = new StringBuilder();
sb.append(_name + " = ");
sb.append("function ( ");
for (int i=0; i<_inputParams.size(); i++){
DataIdentifier curr = _inputParams.get(i);
sb.append(curr.getName());
if (curr.getDefaultValue() != null) sb.append(" = " + curr.getDefaultValue());
if (i < _inputParams.size()-1) sb.append(", ");
}
sb.append(") return (");
for (int i=0; i<_outputParams.size(); i++){
sb.append(_outputParams.get(i).getName());
if (i < _outputParams.size()-1) sb.append(", ");
}
sb.append(") { \n");
for (StatementBlock block : _body){
sb.append(block.toString());
}
sb.append("} \n");
return sb.toString();
}
public void initializeforwardLV(VariableSet activeIn) throws LanguageException{
LOG.error(this.printErrorLocation() + "should never call initializeforwardLV for FunctionStatement");
throw new LanguageException(this.printErrorLocation() + "should never call initializeforwardLV for FunctionStatement");
}
public VariableSet initializebackwardLV(VariableSet lo) throws LanguageException{
LOG.error(this.printErrorLocation() + "should never call initializeforwardLV for FunctionStatement");
throw new LanguageException(this.printErrorLocation() + "should never call initializeforwardLV for FunctionStatement");
}
@Override
public VariableSet variablesRead() {
LOG.warn(this.printWarningLocation() + " -- should not call variablesRead from FunctionStatement ");
return new VariableSet();
}
@Override
public VariableSet variablesUpdated() {
LOG.warn(this.printWarningLocation() + " -- should not call variablesRead from FunctionStatement ");
return new VariableSet();
}
public static String[] createFunctionCallVariables( ArrayList lops )
{
String[] ret = new String[lops.size()]; //vars in order
for( int i=0; i