/*
 * 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.parser.Expression.ValueType;
import org.apache.sysml.runtime.DMLRuntimeException;
import org.apache.sysml.runtime.controlprogram.context.ExecutionContext;
import org.apache.sysml.runtime.matrix.operators.BinaryOperator;
import org.apache.sysml.runtime.matrix.operators.Operator;


public class ScalarScalarBuiltinCPInstruction extends BuiltinBinaryCPInstruction
{
	public ScalarScalarBuiltinCPInstruction(Operator op, CPOperand in1, CPOperand in2, CPOperand out, String opcode, String instr){
		super(op, in1, in2, out, 2, opcode, instr);
	}

	@Override 
	public void processInstruction(ExecutionContext ec) 
		throws DMLRuntimeException 
	{
		ScalarObject so1 = ec.getScalarInput( input1.getName(), input1.getValueType(), input1.isLiteral() );
		ScalarObject so2 = ec.getScalarInput(input2.getName(), input2.getValueType(), input2.isLiteral() );
		
		BinaryOperator dop = (BinaryOperator) _optr;
		ScalarObject sores = null;
		
		//compute output value, incl implicit type promotion if necessary
		if( so1 instanceof StringObject || so2 instanceof StringObject )
			throw new DMLRuntimeException("Binary builtin '"+getOpcode()+"' not supported over string inputs.");
		else if( so1 instanceof DoubleObject || so2 instanceof DoubleObject || output.getValueType()==ValueType.DOUBLE )
			sores = new DoubleObject(dop.fn.execute( so1.getDoubleValue(), so2.getDoubleValue() ));
		else if( so1 instanceof IntObject || so2 instanceof IntObject )
			sores = new IntObject((long)dop.fn.execute( so1.getLongValue(), so2.getLongValue() ));
		else //all boolean
			throw new DMLRuntimeException("Binary builtin '"+getOpcode()+"' not supported over boolean inputs.");
		
		ec.setScalarOutput(output.getName(), sores);
	}
}