/*
 * 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.runtime.instructions.mr;

import org.apache.sysml.runtime.DMLRuntimeException;
import org.apache.sysml.runtime.instructions.Instruction;
import org.apache.sysml.runtime.matrix.data.MatrixValue;
import org.apache.sysml.runtime.matrix.mapred.CachedValueMap;
import org.apache.sysml.runtime.matrix.mapred.IndexedMatrixValue;
import org.apache.sysml.runtime.matrix.operators.Operator;


public class ReblockInstruction extends UnaryMRInstructionBase 
{
	
	public int brlen;
	public int bclen;
	public boolean outputEmptyBlocks;
	
	public ReblockInstruction (Operator op, byte in, byte out, int br, int bc, boolean emptyBlocks, String istr) {
		super(op, in, out);
		brlen=br;
		bclen=bc;
		outputEmptyBlocks = emptyBlocks;
		instString = istr;
	}
	
	public static ReblockInstruction parseInstruction(String str) 
	{
		Operator op = null;
	
		byte input, output;
		String[] s=str.split(Instruction.OPERAND_DELIM);
		
		String[] in1f = s[2].split(Instruction.DATATYPE_PREFIX);
		input=Byte.parseByte(in1f[0]);
		
		String[] outf = s[3].split(Instruction.DATATYPE_PREFIX);
		output=Byte.parseByte(outf[0]);
		
		int brlen=Integer.parseInt(s[4]);
		int bclen=Integer.parseInt(s[5]);
		boolean outputEmptyBlocks = Boolean.parseBoolean(s[6]);
		
		return new ReblockInstruction(op, input, output, brlen, bclen, outputEmptyBlocks, str);
	}

	@Override
	public void processInstruction(Class<? extends MatrixValue> valueClass,
			CachedValueMap cachedValues, IndexedMatrixValue tempValue,
			IndexedMatrixValue zeroInput, int blockRowFactor, int blockColFactor)
			throws DMLRuntimeException {
		throw new DMLRuntimeException("ReblockInstruction.processInstruction should never be called");
		
	}
	
}