antlr
Class RuleBlock

java.lang.Object
  |
  +--antlr.GrammarElement
        |
        +--antlr.AlternativeElement
              |
              +--antlr.AlternativeBlock
                    |
                    +--antlr.RuleBlock

public class RuleBlock

extends AlternativeBlock

A list of alternatives and info contained in the rule definition.

Field Summary

protected Vector	alternatives
protected int	alti
protected int	altj
protected int	analysisAlt
protected java.lang.String	argAction
static int	AUTO_GEN_BANG
static int	AUTO_GEN_CARET
static int	AUTO_GEN_NONE
protected int	autoGenType
protected Lookahead[]	cache
protected boolean	defaultErrorHandler
protected boolean	doAutoGen
protected java.lang.String	enclosingRuleName
protected RuleEndElement	endNode
(package private) java.util.Hashtable	exceptionSpecs
protected boolean	generateAmbigWarnings
protected Grammar	grammar
(package private) boolean	greedy
(package private) boolean	greedySet
protected boolean	hasAnAction
protected boolean	hasASynPred
protected int	ID
protected java.lang.String	ignoreRule
protected java.lang.String	initAction
protected java.lang.String	label
(package private) Vector	labeledElements
protected int	line
protected boolean[]	lock
protected static int	nblks
(package private) AlternativeElement	next
(package private) boolean	not
protected java.lang.String	returnAction
protected java.lang.String	ruleName
protected boolean	testLiterals
protected java.lang.String	throwsSpec
protected boolean	warnWhenFollowAmbig

Constructor Summary

RuleBlock(Grammar g, java.lang.String r)
Construct a named rule.

RuleBlock(Grammar g, java.lang.String r, int line, boolean doAutoGen_)
Construct a named rule with line number information

Method Summary

void	addAlternative(Alternative alt)
void	addExceptionSpec(ExceptionSpec ex)
ExceptionSpec	findExceptionSpec(java.lang.String label)
ExceptionSpec	findExceptionSpec(Token label)
void	generate()
Alternative	getAlternativeAt(int i)
Vector	getAlternatives()
boolean	getAutoGen()
int	getAutoGenType()
boolean	getDefaultErrorHandler()
RuleEndElement	getEndElement()
java.lang.String	getIgnoreRule()
java.lang.String	getInitAction()
java.lang.String	getLabel()
int	getLine()
java.lang.String	getRuleName()
boolean	getTestLiterals()
boolean	isLexerAutoGenRule()
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	setDefaultErrorHandler(boolean value)
void	setEndElement(RuleEndElement re)
void	setInitAction(java.lang.String initAction_)
void	setLabel(java.lang.String label_)
void	setOption(Token key, Token value)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

ruleName

protected java.lang.String ruleName

argAction

protected java.lang.String argAction

throwsSpec

protected java.lang.String throwsSpec

returnAction

protected java.lang.String returnAction

endNode

protected RuleEndElement endNode

testLiterals

protected boolean testLiterals

labeledElements

Vector labeledElements

lock

protected boolean[] lock

cache

protected Lookahead[] cache

exceptionSpecs

java.util.Hashtable exceptionSpecs

defaultErrorHandler

protected boolean defaultErrorHandler

ignoreRule

protected java.lang.String ignoreRule

initAction

protected java.lang.String initAction

alternatives

protected Vector alternatives

label

protected java.lang.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

next

AlternativeElement next

autoGenType

protected int autoGenType

enclosingRuleName

protected java.lang.String enclosingRuleName

AUTO_GEN_NONE

public static final int AUTO_GEN_NONE

See Also:

Constant Field Values

AUTO_GEN_CARET

public static final int AUTO_GEN_CARET

See Also:

Constant Field Values

AUTO_GEN_BANG

public static final int AUTO_GEN_BANG

See Also:

Constant Field Values

grammar

protected Grammar grammar

line

protected int line

Constructor Detail

RuleBlock

public RuleBlock(Grammar g,
                 java.lang.String r)

Construct a named rule.

RuleBlock

public RuleBlock(Grammar g,
                 java.lang.String r,
                 int line,
                 boolean doAutoGen_)

Construct a named rule with line number information

Method Detail

addExceptionSpec

public void addExceptionSpec(ExceptionSpec ex)

findExceptionSpec

public ExceptionSpec findExceptionSpec(Token label)

findExceptionSpec

public ExceptionSpec findExceptionSpec(java.lang.String label)

generate

public void generate()

Overrides:

generate in class AlternativeBlock

getDefaultErrorHandler

public boolean getDefaultErrorHandler()

getEndElement

public RuleEndElement getEndElement()

getIgnoreRule

public java.lang.String getIgnoreRule()

getRuleName

public java.lang.String getRuleName()

getTestLiterals

public boolean getTestLiterals()

isLexerAutoGenRule

public boolean isLexerAutoGenRule()

look

public Lookahead look(int k)

Overrides:

look in class AlternativeBlock

prepareForAnalysis

public void prepareForAnalysis()

Overrides:

prepareForAnalysis in class AlternativeBlock

setDefaultErrorHandler

public void setDefaultErrorHandler(boolean value)

setEndElement

public void setEndElement(RuleEndElement re)

setOption

public void setOption(Token key,
                      Token value)

Overrides:

setOption in class AlternativeBlock

toString

public java.lang.String toString()

Overrides:

toString in class AlternativeBlock

addAlternative

public void addAlternative(Alternative alt)

getAlternativeAt

public Alternative getAlternativeAt(int i)

getAlternatives

public Vector getAlternatives()

getAutoGen

public boolean getAutoGen()

getInitAction

public java.lang.String getInitAction()

getLabel

public java.lang.String getLabel()

Overrides:

getLabel in class AlternativeElement

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(java.lang.String initAction_)

setLabel

public void setLabel(java.lang.String label_)

Overrides:

setLabel in class AlternativeElement

getAutoGenType

public int getAutoGenType()

getLine

public int getLine()