| /* |
| * 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.parser; |
| |
| import java.util.ArrayList; |
| |
| |
| |
| public class IfStatement extends Statement |
| { |
| private ConditionalPredicate _predicate; |
| private ArrayList<StatementBlock> _ifBody; |
| private ArrayList<StatementBlock> _elseBody; |
| |
| @Override |
| public Statement rewriteStatement(String prefix) { |
| throw new LanguageException(this.printErrorLocation() + "should not call rewriteStatement for IfStatement"); |
| } |
| |
| public IfStatement(){ |
| _predicate = null; |
| _ifBody = new ArrayList<>(); |
| _elseBody = new ArrayList<>(); |
| } |
| |
| public void setConditionalPredicate(ConditionalPredicate pred){ |
| _predicate = pred; |
| } |
| |
| |
| public void addStatementBlockIfBody(StatementBlock sb){ |
| _ifBody.add(sb); |
| } |
| |
| public void addStatementBlockElseBody(StatementBlock sb){ |
| _elseBody.add(sb); |
| } |
| |
| public ConditionalPredicate getConditionalPredicate(){ |
| return _predicate; |
| } |
| |
| public ArrayList<StatementBlock> getIfBody(){ |
| return _ifBody; |
| } |
| |
| public ArrayList<StatementBlock> getElseBody(){ |
| return _elseBody; |
| } |
| |
| public void setIfBody(ArrayList<StatementBlock> body){ |
| _ifBody = body; |
| } |
| |
| public void setElseBody(ArrayList<StatementBlock> body){ |
| _elseBody = body; |
| } |
| |
| |
| @Override |
| public boolean controlStatement() { |
| return true; |
| } |
| |
| @Override |
| public void initializeforwardLV(VariableSet activeIn) { |
| throw new LanguageException(this.printErrorLocation() + "should never call initializeforwardLV for IfStatement"); |
| } |
| |
| @Override |
| public VariableSet initializebackwardLV(VariableSet lo) { |
| throw new LanguageException(this.printErrorLocation() + "should never call initializeforwardLV for IfStatement"); |
| } |
| |
| public void mergeStatementBlocksIfBody(){ |
| _ifBody = StatementBlock.mergeStatementBlocks(_ifBody); |
| } |
| |
| public void mergeStatementBlocksElseBody(){ |
| if (!_elseBody.isEmpty()) |
| _elseBody = StatementBlock.mergeStatementBlocks(_elseBody); |
| } |
| |
| @Override |
| public String toString(){ |
| StringBuilder sb = new StringBuilder(); |
| sb.append("if ( "); |
| sb.append(_predicate.toString()); |
| sb.append(") { \n"); |
| for (StatementBlock block : _ifBody){ |
| sb.append(block.toString()); |
| } |
| sb.append("}\n"); |
| if (!_elseBody.isEmpty()){ |
| sb.append(" else { \n"); |
| for (StatementBlock block : _elseBody){ |
| sb.append(block.toString()); |
| } |
| sb.append("}\n"); |
| } |
| return sb.toString(); |
| } |
| |
| @Override |
| public VariableSet variablesRead() { |
| LOG.warn("WARNING: line " + this.getBeginLine() + ", column " + this.getBeginColumn() + " -- should not call variablesRead from IfStatement "); |
| return null; |
| } |
| |
| @Override |
| public VariableSet variablesUpdated() { |
| LOG.warn("WARNING: line " + this.getBeginLine() + ", column " + this.getBeginColumn() + " -- should not call variablesUpdated from IfStatement "); |
| return null; |
| } |
| } |