/*
 * 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.cp;

import org.apache.sysml.runtime.DMLRuntimeException;
import org.apache.sysml.runtime.controlprogram.context.ExecutionContext;
import org.apache.sysml.runtime.functionobjects.MinusMultiply;
import org.apache.sysml.runtime.functionobjects.PlusMultiply;
import org.apache.sysml.runtime.functionobjects.ValueFunctionWithConstant;
import org.apache.sysml.runtime.instructions.InstructionUtils;
import org.apache.sysml.runtime.matrix.data.MatrixBlock;
import org.apache.sysml.runtime.matrix.operators.BinaryOperator;

public class PlusMultCPInstruction extends ArithmeticBinaryCPInstruction 
{
	public PlusMultCPInstruction(BinaryOperator op, CPOperand in1, CPOperand in2, 
			CPOperand in3, CPOperand out, String opcode, String str) 
	{
		super(op, in1, in2, out, opcode, str);
		input3=in3;
	}
	
	public static PlusMultCPInstruction parseInstruction(String str)
	{
		String[] parts = InstructionUtils.getInstructionPartsWithValueType(str);
		String opcode=parts[0];
		CPOperand operand1 = new CPOperand(parts[1]);
		CPOperand operand2 = new CPOperand(parts[3]); //put the second matrix (parts[3]) in Operand2 to make using Binary matrix operations easier
		CPOperand operand3 = new CPOperand(parts[2]); 
		CPOperand outOperand = new CPOperand(parts[4]);
		BinaryOperator bOperator = new BinaryOperator(opcode.equals("+*") ? 
				PlusMultiply.getPlusMultiplyFnObject():MinusMultiply.getMinusMultiplyFnObject());
		return new PlusMultCPInstruction(bOperator,operand1, operand2, operand3, outOperand, opcode,str);
	}
	
	@Override
	public void processInstruction( ExecutionContext ec )
		throws DMLRuntimeException
	{		
		String output_name = output.getName();

		//get all the inputs
		MatrixBlock matrix1 = ec.getMatrixInput(input1.getName());
		MatrixBlock matrix2 = ec.getMatrixInput(input2.getName());
		ScalarObject scalar = ec.getScalarInput(input3.getName(), input3.getValueType(), input3.isLiteral()); 
		
		//execution
		((ValueFunctionWithConstant) ((BinaryOperator)_optr).fn).setConstant(scalar.getDoubleValue());
		MatrixBlock out = (MatrixBlock) matrix1.binaryOperations((BinaryOperator) _optr, matrix2, new MatrixBlock());
		
		//release the matrices
		ec.releaseMatrixInput(input1.getName());
		ec.releaseMatrixInput(input2.getName());
		
		ec.setMatrixOutput(output_name, out);
	}
}