/**
* Copyright (c) 2005-2017, KoLmafia development team
* http://kolmafia.sourceforge.net/
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* [1] Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* [2] Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* [3] Neither the name "KoLmafia" nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION ) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE ) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package net.sourceforge.kolmafia.textui.parsetree;
import java.io.PrintStream;
import net.sourceforge.kolmafia.textui.DataTypes;
import net.sourceforge.kolmafia.textui.Interpreter;
public class Operation
extends Expression
{
Operator oper;
public Operation( final Value lhs, final Value rhs, final Operator oper )
{
this.lhs = lhs;
this.rhs = rhs;
this.oper = oper;
}
public Operation( final Value lhs, final Operator oper )
{
this.lhs = lhs;
this.rhs = null;
this.oper = oper;
}
@Override
public Type getType()
{
Type leftType = this.lhs.getType();
// Unary operators have no right hand side
if ( this.rhs == null )
{
return leftType;
}
Type rightType = this.rhs.getType();
// String concatenation always yields a string
if ( this.oper.equals( "+" ) && ( leftType.equals( DataTypes.TYPE_STRING ) || rightType.equals( DataTypes.TYPE_STRING ) ) )
{
return DataTypes.STRING_TYPE;
}
// If it's an integer operator, must be integers
if ( this.oper.isInteger() )
{
return DataTypes.INT_TYPE;
}
// If it's a logical operator, must be both integers or both
// booleans
if ( this.oper.isLogical() )
{
return leftType;
}
// If it's not arithmetic, it's boolean
if ( !this.oper.isArithmetic() )
{
return DataTypes.BOOLEAN_TYPE;
}
// Coerce int to float
if ( leftType.equals( DataTypes.TYPE_FLOAT ) )
{
return DataTypes.FLOAT_TYPE;
}
// Otherwise result is whatever is on right
return rightType;
}
@Override
public Value execute( final Interpreter interpreter )
{
return this.rhs == null ?
this.oper.applyTo( interpreter, this.lhs ) :
this.oper.applyTo( interpreter, this.lhs, this.rhs );
}
@Override
public String toString()
{
if ( this.rhs == null )
{
return this.oper.toString() + " " + this.lhs.toQuotedString();
}
return "( " + this.lhs.toQuotedString() + " " + this.oper.toString() + " " + this.rhs.toQuotedString() + " )";
}
@Override
public void print( final PrintStream stream, final int indent )
{
this.oper.print( stream, indent );
super.print( stream, indent );
}
}