org.extendj.neobeaver.ast

Class ASTState

java.lang.Object

org.extendj.neobeaver.ast.ASTState

public class ASTState
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	ASTState.CircleState Tracks the state of the current circular evaluation.
protected static class	ASTState.CircularValue This class stores an attribute value tagged with an iteration ID for a circular evaluation.
protected static class	ASTState.Cycle Instances of this class are used to uniquely identify circular evaluation iterations.

Field Summary

Fields

Modifier and Type	Field and Description
static ASTState.Cycle	NON_CYCLE The iteration ID used outside of circular evaluation.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ASTState()

Method Summary

Modifier and Type	Method and Description
protected boolean	calledByLazyAttribute()
protected boolean	changeInCycle()
protected boolean	checkAndSetVisited(java.lang.Object attribute, int cycle) Check if attribute was already visited during the current cycle.
protected void	clearVisited() Reset visited cycle tracking for this thread.
protected ASTState.CircleState	currentCircle()
protected ASTState.Cycle	cycle()
protected void	enterCircle()
protected void	enterLazyAttribute()
protected boolean	inCircle()
protected boolean	lastCycle()
protected void	leaveCircle()
protected void	leaveLazyAttribute()
protected ASTState.Cycle	nextCycle()
void	reset()
protected void	resetVisited(java.lang.Object attribute) Reset visit tracker for a single attribute.
protected void	setChangeInCycle()
protected void	startLastCycle()
protected boolean	testAndClearChangeInCycle()

Methods inherited from class java.lang.Object

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

Field Detail

NON_CYCLE

public static final ASTState.Cycle NON_CYCLE

The iteration ID used outside of circular evaluation.

This is the iteration ID when no circular evaluation is ongoing.

Constructor Detail

ASTState

protected ASTState()

Method Detail

inCircle

protected boolean inCircle()

calledByLazyAttribute

protected boolean calledByLazyAttribute()

enterLazyAttribute

protected void enterLazyAttribute()

leaveLazyAttribute

protected void leaveLazyAttribute()

enterCircle

protected void enterCircle()

checkAndSetVisited

protected boolean checkAndSetVisited(java.lang.Object attribute,
                                     int cycle)

Check if attribute was already visited during the current cycle.

Returns:

true if the attribute was already visited.

clearVisited

protected void clearVisited()

Reset visited cycle tracking for this thread.

resetVisited

protected void resetVisited(java.lang.Object attribute)

Reset visit tracker for a single attribute.

leaveCircle

protected void leaveCircle()

nextCycle

protected ASTState.Cycle nextCycle()

cycle

protected ASTState.Cycle cycle()

currentCircle

protected ASTState.CircleState currentCircle()

setChangeInCycle

protected void setChangeInCycle()

testAndClearChangeInCycle

protected boolean testAndClearChangeInCycle()

changeInCycle

protected boolean changeInCycle()

lastCycle

protected boolean lastCycle()

startLastCycle

protected void startLastCycle()

reset

public void reset()