| /* |
| * 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.sysds.runtime.controlprogram; |
| |
| import java.util.ArrayList; |
| |
| import org.apache.sysds.api.DMLScript; |
| import org.apache.sysds.parser.IfStatementBlock; |
| import org.apache.sysds.common.Types.ValueType; |
| import org.apache.sysds.runtime.DMLRuntimeException; |
| import org.apache.sysds.runtime.DMLScriptException; |
| import org.apache.sysds.runtime.controlprogram.context.ExecutionContext; |
| import org.apache.sysds.runtime.instructions.Instruction; |
| import org.apache.sysds.runtime.instructions.cp.BooleanObject; |
| |
| |
| public class IfProgramBlock extends ProgramBlock |
| { |
| private ArrayList<Instruction> _predicate; |
| private ArrayList<ProgramBlock> _childBlocksIfBody; |
| private ArrayList<ProgramBlock> _childBlocksElseBody; |
| private int _lineagePathPos = -1; |
| |
| public IfProgramBlock(Program prog, ArrayList<Instruction> predicate) { |
| super(prog); |
| _childBlocksIfBody = new ArrayList<>(); |
| _childBlocksElseBody = new ArrayList<>(); |
| _predicate = predicate; |
| } |
| |
| public ArrayList<ProgramBlock> getChildBlocksIfBody() { |
| return getChildBlocks(); |
| } |
| |
| public void setChildBlocksIfBody(ArrayList<ProgramBlock> blocks) { |
| _childBlocksIfBody = blocks; |
| } |
| |
| public void addProgramBlockIfBody(ProgramBlock pb) { |
| _childBlocksIfBody.add(pb); |
| } |
| |
| public ArrayList<ProgramBlock> getChildBlocksElseBody() { |
| return _childBlocksElseBody; |
| } |
| |
| public void setChildBlocksElseBody(ArrayList<ProgramBlock> blocks) { |
| _childBlocksElseBody = blocks; |
| } |
| |
| public void addProgramBlockElseBody(ProgramBlock pb) { |
| _childBlocksElseBody.add(pb); |
| } |
| |
| public ArrayList<Instruction> getPredicate(){ |
| return _predicate; |
| } |
| |
| public void setPredicate(ArrayList<Instruction> predicate) { |
| _predicate = predicate; |
| } |
| |
| @Override |
| public ArrayList<ProgramBlock> getChildBlocks() { |
| return _childBlocksIfBody; |
| } |
| |
| @Override |
| public boolean isNested() { |
| return true; |
| } |
| |
| public void setLineageDedupPathPos(int pos) { |
| _lineagePathPos = pos; |
| } |
| |
| @Override |
| public void execute(ExecutionContext ec) |
| { |
| BooleanObject predResult = executePredicate(ec); |
| |
| if (DMLScript.LINEAGE_DEDUP) |
| ec.getLineage().setDedupPathBranch(_lineagePathPos, predResult.getBooleanValue()); |
| |
| //execute if statement |
| if(predResult.getBooleanValue()) { |
| try { |
| for (int i=0 ; i < _childBlocksIfBody.size() ; i++) { |
| _childBlocksIfBody.get(i).execute(ec); |
| } |
| } |
| catch(DMLScriptException e) { |
| throw e; |
| } |
| catch(Exception e) { |
| throw new DMLRuntimeException(this.printBlockErrorLocation() + "Error evaluating if statement body ", e); |
| } |
| } |
| else { |
| try { |
| for (int i=0 ; i < _childBlocksElseBody.size() ; i++) { |
| _childBlocksElseBody.get(i).execute(ec); |
| } |
| } |
| catch(DMLScriptException e) { |
| throw e; |
| } |
| catch(Exception e) { |
| throw new DMLRuntimeException(this.printBlockErrorLocation() + "Error evaluating else statement body ", e); |
| } |
| } |
| |
| //execute exit instructions |
| executeExitInstructions(_exitInstruction, "if", ec); |
| } |
| |
| private BooleanObject executePredicate(ExecutionContext ec) |
| { |
| BooleanObject result = null; |
| try { |
| if( _sb != null ) { |
| IfStatementBlock isb = (IfStatementBlock)_sb; |
| result = (BooleanObject) executePredicate(_predicate, isb.getPredicateHops(), |
| isb.requiresPredicateRecompilation(), ValueType.BOOLEAN, ec); |
| } |
| else |
| result = (BooleanObject) executePredicate(_predicate, null, false, ValueType.BOOLEAN, ec); |
| } |
| catch(Exception ex) { |
| throw new DMLRuntimeException(this.printBlockErrorLocation() + "Failed to evaluate the IF predicate.", ex); |
| } |
| |
| //(guaranteed to be non-null, see executePredicate/getScalarInput) |
| return result; |
| } |
| |
| @Override |
| public String printBlockErrorLocation(){ |
| return "ERROR: Runtime error in if program block generated from if statement block between lines " + _beginLine + " and " + _endLine + " -- "; |
| } |
| } |