orc.runtime.sites
Class EvalSite

java.lang.Object
  orc.runtime.values.Value
      orc.runtime.sites.Site
          orc.runtime.sites.EvalSite

All Implemented Interfaces:

Callable

Direct Known Subclasses:

Add, BoolBinopSite, BoundedBuffer, Buffer, Cat, Ceil, Cell, ComparisonSite, Cons, Counter, Datatype, Dictionary, Div, Equal, Exponent, Floor, Inequal, JavaArray, Let, Mod, Mult, Nil, Not, Read, Record, Ref, Semaphore, Sub, SyncChannel, Tag, ThreadSite, UMinus, UUID, Write

public abstract class EvalSite
extends Site

Abstract class for sites with a total and immediate semantics: evaluate the arguments and return a value without blocking and without affecting the Orc engine. Essentially, subclasses of this class represent sites without any special concurrent behavior. Subclasses must implement the method evaluate, which takes an argument list and returns a single value.

Author:

dkitchin

Field Summary

Fields inherited from class orc.runtime.values.Value

futureNotReady

Constructor Summary

EvalSite()

Method Summary

void	callSite(Args args, Token caller) Must be implemented by subclasses to implement the site behavior
abstract java.lang.Object	evaluate(Args args)

Methods inherited from class orc.runtime.sites.Site

accept, createCall, type

Methods inherited from class orc.runtime.values.Value

forceArg, forceCall, signal, write

Methods inherited from class java.lang.Object

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

Constructor Detail

EvalSite

public EvalSite()

Method Detail

callSite

public void callSite(Args args,
                     Token caller)
              throws TokenException

Description copied from class: Site

Must be implemented by subclasses to implement the site behavior

Specified by:

callSite in class Site

Parameters:

args - list of argument values

caller - where the result should be sent

Throws:

TokenException

evaluate

public abstract java.lang.Object evaluate(Args args)
                                   throws TokenException

Throws:

TokenException