gnu.jel
Class OPcondtnl

java.lang.Object
  gnu.jel.OP
      gnu.jel.OPcondtnl

public class OPcondtnl
extends OP

A tree node, representing conditional.

Field Summary

Fields inherited from class gnu.jel.OP

chi, resID, resType, specialTypes, unwrapType

Constructor Summary

OPcondtnl(Stack<OP> paramOPs)
Creates conditional operator.

Method Summary

void	compile(ClassFile cf) Called to generate the code implementing this OP.
Object	eval() Called to evaluate this node and all its sub-nodes.

Methods inherited from class gnu.jel.OP

isWidening, isWidening, narrow, typeID, typeIDObject, widen

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OPcondtnl

public OPcondtnl(Stack<OP> paramOPs)
          throws CompilationException

Creates conditional operator.

On entry the paramOPs should contain .

Parameters:

paramOPs - stack holding the operands

Throws:

CompilationException

Method Detail

compile

public void compile(ClassFile cf)

Description copied from class: OP

Called to generate the code implementing this OP.

Specified by:

compile in class OP

Parameters:

cf - class file with a new open method to write the code into.

eval

public Object eval()
            throws Exception

Description copied from class: OP

Called to evaluate this node and all its sub-nodes.

Upon success this node is to be replaced by the constant node holding the returned object.

Specified by:

eval in class OP

Returns:

an object to which this node evaluates

Throws:

Exception