orc.runtime.sites
Class SimpleSite

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

All Implemented Interfaces:

Callable, Future

Direct Known Subclasses:

MethodProxy

public abstract class SimpleSite
extends Site

Simple sites which don't need access to tokens. Cooperative threading is provided via orc.runtime.Continuation. This class makes it easy to implement variations on EvalSite, ThreadedSite, PartialSite, and combinations thereof.

Author:

quark

Constructor Summary

SimpleSite()

Method Summary

void	callSite(Args args, Token caller) Must be implemented by subclasses to implement the site behavior
abstract Value	evaluate(Args args) If this method calls Continuation.suspend(), its return value will be ignored and the engine will expect the method to resume or kill the continuation when ready.

Methods inherited from class orc.runtime.sites.Site

accept, createCall

Methods inherited from class orc.runtime.values.Value

forceArg, forceCall, head, isCons, isNil, isNone, isSome, signal, tail, untag

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleSite

public SimpleSite()

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 Value evaluate(Args args)
                        throws TokenException

If this method calls Continuation.suspend(), its return value will be ignored and the engine will expect the method to resume or kill the continuation when ready. Otherwise, the site is assumed to be total and immediate and the return value will be used as the published value of the call.

Throws:

TokenException