/*
* Copyright (c) 2007 BUSINESS OBJECTS SOFTWARE LIMITED
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of Business Objects 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.
*/
/*
* RTApplicationO.java
* Creation date: Jun 14, 2005
* By: RCypher
*/
package org.openquark.cal.internal.runtime.lecc;
import org.openquark.cal.runtime.CALExecutorException;
/**
* @author RCypher
*
* TODO To change the template for this generated type comment go to
* Window - Preferences - Java - Code Style - Code Templates
*/
public class RTApplicationO extends RTApplication {
RTApplicationO(RTValue function, RTValue argument) {
super (function, argument);
}
@Override
public RTValue apply(RTValue arg1) {
return new RTApplicationO(this, arg1);
}
@Override
public RTValue apply(RTValue arg1, RTValue arg2) {
return new RTApplicationO(new RTApplicationO(this, arg1), arg2);
}
@Override
public RTValue apply(RTValue arg1, RTValue arg2, RTValue arg3) {
return new RTApplicationO (new RTApplicationO (new RTApplicationO(this, arg1), arg2), arg3);
}
@Override
public RTValue apply(RTValue arg1, RTValue arg2, RTValue arg3, RTValue arg4) {
return new RTApplicationO(new RTApplicationO (new RTApplicationO (new RTApplicationO(this, arg1), arg2), arg3), arg4);
}
/**
* {@inheritDoc}
*/
@Override
protected RTValue reduce(RTExecutionContext ec) throws CALExecutorException {
if (function != null) {
// Deal with oversaturation: first walk down to the right
// argument for the arity of the underlying supercombinator
function.evaluate(ec);
int argCount = getArgCount();
RTValue rv = this;
for (RTValue lhs = rv.lhs(); lhs != null; lhs = rv.lhs()) {
rv = lhs;
argCount += rv.getArgCount();
}
if (argCount < rv.getArity()) {
return this;
}
setResult (rv.f (this, ec));
} else if (result == null) {
throw new NullPointerException ("Invalid reduction state in application. This is probably caused by a circular function definition.");
}
return (result);
}
}