Package antlr

Class AlternativeBlock

java.lang.Object

antlr.GrammarElement

antlr.AlternativeElement

antlr.AlternativeBlock

Direct Known Subclasses:

BlockWithImpliedExitPath, RuleBlock, SynPredBlock, TreeElement

class AlternativeBlock
extends AlternativeElement

A list of alternatives

Field Summary

Fields

Modifier and Type	Field	Description
protected Vector	alternatives
protected int	alti
protected int	altj
protected int	analysisAlt
protected boolean	doAutoGen
protected boolean	generateAmbigWarnings
(package private) boolean	greedy
(package private) boolean	greedySet
protected boolean	hasAnAction
protected boolean	hasASynPred
protected int	ID
protected String	initAction
protected String	label
protected static int	nblks
(package private) boolean	not
protected boolean	warnWhenFollowAmbig

Fields inherited from class antlr.AlternativeElement

autoGenType, enclosingRuleName, next

Fields inherited from class antlr.GrammarElement

AUTO_GEN_BANG, AUTO_GEN_CARET, AUTO_GEN_NONE, column, grammar, line

Constructor Summary

Constructors

Constructor	Description
AlternativeBlock(Grammar g)
AlternativeBlock(Grammar g, Token start, boolean not)

Method Summary

Modifier and Type	Method	Description
void	addAlternative(Alternative alt)
void	generate()
Alternative	getAlternativeAt(int i)
Vector	getAlternatives()
boolean	getAutoGen()
String	getInitAction()
String	getLabel()
Lookahead	look(int k)
void	prepareForAnalysis()
void	removeTrackingOfRuleRefs(Grammar g)	Walk the syntactic predicate and, for a rule ref R, remove the ref from the list of FOLLOW references for R (stored in the symbol table.
void	setAlternatives(Vector v)
void	setAutoGen(boolean doAutoGen_)
void	setInitAction(String initAction_)
void	setLabel(String label_)
void	setOption(Token key, Token value)
String	toString()

Methods inherited from class antlr.AlternativeElement

getAutoGenType, setAutoGenType

Methods inherited from class antlr.GrammarElement

getColumn, getLine

Methods inherited from class java.lang.Object

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

Field Details

initAction

protected String initAction

alternatives

protected Vector alternatives

label

protected String label

alti

protected int alti

altj

protected int altj

analysisAlt

protected int analysisAlt

hasAnAction

protected boolean hasAnAction

hasASynPred

protected boolean hasASynPred

ID

protected int ID

nblks

protected static int nblks

not

boolean not

greedy

boolean greedy

greedySet

boolean greedySet

doAutoGen

protected boolean doAutoGen

warnWhenFollowAmbig

protected boolean warnWhenFollowAmbig

generateAmbigWarnings

protected boolean generateAmbigWarnings

Constructor Details

AlternativeBlock

public AlternativeBlock(Grammar g)

AlternativeBlock

public AlternativeBlock(Grammar g,
 Token start,
 boolean not)

Method Details

addAlternative

public void addAlternative(Alternative alt)

generate

public void generate()

Overrides:

generate in class GrammarElement

getAlternativeAt

public Alternative getAlternativeAt(int i)

getAlternatives

public Vector getAlternatives()

getAutoGen

public boolean getAutoGen()

getInitAction

public String getInitAction()

getLabel

public String getLabel()

Overrides:

getLabel in class AlternativeElement

look

public Lookahead look(int k)

Overrides:

look in class GrammarElement

prepareForAnalysis

public void prepareForAnalysis()

removeTrackingOfRuleRefs

public void removeTrackingOfRuleRefs(Grammar g)

Walk the syntactic predicate and, for a rule ref R, remove the ref from the list of FOLLOW references for R (stored in the symbol table.

setAlternatives

public void setAlternatives(Vector v)

setAutoGen

public void setAutoGen(boolean doAutoGen_)

setInitAction

public void setInitAction(String initAction_)

setLabel

public void setLabel(String label_)

Overrides:

setLabel in class AlternativeElement

setOption

public void setOption(Token key,
 Token value)

toString

public String toString()

Specified by:

toString in class GrammarElement