net.cscott.sdr.calls
Class Evaluator.Standard

java.lang.Object
  net.cscott.sdr.calls.Evaluator
      net.cscott.sdr.calls.Evaluator.Standard

Enclosing class:

Evaluator

public static class Evaluator.Standard
extends Evaluator

This is the standard top level evaluator. It contains a number of convenience methods for adding elements dynamically to the continuation and accessing the current top-level formation.

Nested Class Summary

Nested classes/interfaces inherited from class net.cscott.sdr.calls.Evaluator

Evaluator.EvaluatorChain, Evaluator.Standard

Constructor Summary

Evaluator.Standard(Comp continuation)
Create a standard evaluator which wll dance the specified calls.

Method Summary

Evaluator	evaluate(DanceState ds) Do "one part" of the continuation, and return an Evaluator which will do the remaining parts, or null if there are no additional parts to evaluate.
boolean	hasSimpleExpansion() Return true iff this Evaluator simply evaluates an Ast tree.
Comp	simpleExpansion() Returns the equivalent simple expansion of the call, if it has one.
String	toString()

Methods inherited from class net.cscott.sdr.calls.Evaluator

breathedEval, evaluateAll, parseAndEval

Methods inherited from class java.lang.Object

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

Constructor Detail

Evaluator.Standard

public Evaluator.Standard(Comp continuation)

Create a standard evaluator which wll dance the specified calls.

Method Detail

hasSimpleExpansion

public boolean hasSimpleExpansion()

Description copied from class: Evaluator

Return true iff this Evaluator simply evaluates an Ast tree. That is, if we can "look inside" the definition of this call or concept by treating it as equivalent to its expansion.

Overrides:

hasSimpleExpansion in class Evaluator

simpleExpansion

public Comp simpleExpansion()

Description copied from class: Evaluator

Returns the equivalent simple expansion of the call, if it has one.

Overrides:

simpleExpansion in class Evaluator

evaluate

public Evaluator evaluate(DanceState ds)

Description copied from class: Evaluator

Do "one part" of the continuation, and return an Evaluator which will do the remaining parts, or null if there are no additional parts to evaluate.

Specified by:

evaluate in class Evaluator

Parameters:

ds - The dynamic dance state. Accumulates dancer actions and movements and tracks static dance information like the level of the dance.

Returns:

An Evaluator for the remaining parts, or null.

toString

public String toString()

Overrides:

toString in class Evaluator