java.lang.Object

org.antlr.v4.automata.ParserATNFactory

org.antlr.v4.automata.LexerATNFactory

All Implemented Interfaces:: ATNFactory

public class LexerATNFactory extends ParserATNFactory

Nested Class Summary

Nested classes/interfaces inherited from interface org.antlr.v4.automata.ATNFactory
ATNFactory.Handle
Field Summary

Fields

Modifier and Type

Field

Description

protected Map<LexerAction,Integer>

actionToIndexMap

Maps from a LexerAction object to the action index.

org.stringtemplate.v4.STGroup

codegenTemplates

static final Map<String,Integer>

COMMON_CONSTANTS

Provides a map of names of predefined constants which are likely to appear as the argument for lexer commands.

protected Map<Integer,LexerAction>

indexToActionMap

Maps from an action index to a LexerAction object.

Fields inherited from class org.antlr.v4.automata.ParserATNFactory
atn, currentOuterAlt, currentRule, g, preventEpsilonClosureBlocks, preventEpsilonOptionalBlocks
Constructor Summary

Constructors

Constructor

Description

LexerATNFactory(LexerGrammar g)
Method Summary

Modifier and Type

Method

Description

ATNFactory.Handle

action(String action)

ATNFactory.Handle

action(ActionAST action)

Build what amounts to an epsilon transition with an action.

protected ATNFactory.Handle

action(GrammarAST node, LexerAction lexerAction)

ATNFactory.Handle

charSetLiteral(GrammarAST charSetAST)

[Aa\t ሴa-z\]\p{Letter}\-] char sets

protected boolean

checkRange(GrammarAST leftNode, GrammarAST rightNode, int leftValue, int rightValue)

protected void

checkSetCollision(GrammarAST ast, IntervalSet set, int el)

protected void

checkSetCollision(GrammarAST ast, IntervalSet set, int a, int b)

ATN

createATN()

static Set<String>

getCommonConstants()

protected int

getLexerActionIndex(LexerAction lexerAction)

IntervalSet

getSetFromCharSetLiteral(GrammarAST charSetAST)

ATNFactory.Handle

lexerAltCommands(ATNFactory.Handle alt, ATNFactory.Handle cmds)

ATNFactory.Handle

lexerCallCommand(GrammarAST ID, GrammarAST arg)

ATNFactory.Handle

lexerCommand(GrammarAST ID)

ATNFactory.Handle

range(GrammarAST a, GrammarAST b)

Not valid for non-lexers.

ATNFactory.Handle

rule(GrammarAST ruleAST, String name, ATNFactory.Handle blk)

ATNFactory.Handle

set(GrammarAST associatedAST, List<GrammarAST> alts, boolean invert)

From set build single edge graph o->o-set->o.

ATNFactory.Handle

stringLiteral(TerminalAST stringLiteralAST)

For a lexer, a string is a sequence of char to match.

ATNFactory.Handle

tokenRef(TerminalAST node)

From label A build graph o-A->o.

Methods inherited from class org.antlr.v4.automata.ParserATNFactory
_createATN, _ruleRef, addEOFTransitionToStartRules, addFollowLink, addRuleFollowLinks, alt, block, blockHasWildcardAlt, elemList, epsilon, epsilon, epsilon, expectNonGreedy, getTokenType, label, listLabel, makeBlock, newState, newState, newState, optional, plus, ruleRef, sempred, setCurrentOuterAlt, setCurrentRuleName, star, wildcard

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details
- codegenTemplates
  
  public org.stringtemplate.v4.STGroup codegenTemplates
- COMMON_CONSTANTS
  
  public static final Map<String,Integer> COMMON_CONSTANTS
  
  Provides a map of names of predefined constants which are likely to appear as the argument for lexer commands. These names would be resolved by the Java compiler for lexer commands that are translated to embedded actions, but are required during code generation for creating LexerAction instances that are usable by a lexer interpreter.
- indexToActionMap
  
  protected Map<Integer,LexerAction> indexToActionMap
  
  Maps from an action index to a LexerAction object.
- actionToIndexMap
  
  protected Map<LexerAction,Integer> actionToIndexMap
  
  Maps from a LexerAction object to the action index.
Constructor Details
- LexerATNFactory
  
  public LexerATNFactory(LexerGrammar g)
Method Details
- getCommonConstants
  
  public static Set<String> getCommonConstants()
- createATN
  
  public ATN createATN()
  
  Specified by:
  
  createATN in interface ATNFactory
  
  Overrides:
  
  createATN in class ParserATNFactory
- rule
  
  public ATNFactory.Handle rule(GrammarAST ruleAST, String name, ATNFactory.Handle blk)
  
  Specified by:
  
  rule in interface ATNFactory
  
  Overrides:
  
  rule in class ParserATNFactory
- action
  
  public ATNFactory.Handle action(ActionAST action)
  
  Description copied from class: ParserATNFactory
  
  Build what amounts to an epsilon transition with an action. The action goes into ATN though it is ignored during prediction if actionIndex<0.
  
  Specified by:
  
  action in interface ATNFactory
  
  Overrides:
  
  action in class ParserATNFactory
- getLexerActionIndex
  
  protected int getLexerActionIndex(LexerAction lexerAction)
- action
  
  public ATNFactory.Handle action(String action)
  
  Specified by:
  
  action in interface ATNFactory
  
  Overrides:
  
  action in class ParserATNFactory
- action
  
  protected ATNFactory.Handle action(GrammarAST node, LexerAction lexerAction)
- lexerAltCommands
  
  public ATNFactory.Handle lexerAltCommands(ATNFactory.Handle alt, ATNFactory.Handle cmds)
  
  Specified by:
  
  lexerAltCommands in interface ATNFactory
  
  Overrides:
  
  lexerAltCommands in class ParserATNFactory
- lexerCallCommand
  
  public ATNFactory.Handle lexerCallCommand(GrammarAST ID, GrammarAST arg)
  
  Specified by:
  
  lexerCallCommand in interface ATNFactory
  
  Overrides:
  
  lexerCallCommand in class ParserATNFactory
- lexerCommand
  
  public ATNFactory.Handle lexerCommand(GrammarAST ID)
  
  Specified by:
  
  lexerCommand in interface ATNFactory
  
  Overrides:
  
  lexerCommand in class ParserATNFactory
- range
  
  public ATNFactory.Handle range(GrammarAST a, GrammarAST b)
  
  Description copied from class: ParserATNFactory
  
  Not valid for non-lexers.
  
  Specified by:
  
  range in interface ATNFactory
  
  Overrides:
  
  range in class ParserATNFactory
- set
  
  public ATNFactory.Handle set(GrammarAST associatedAST, List<GrammarAST> alts, boolean invert)
  
  Description copied from class: ParserATNFactory
  
  From set build single edge graph o->o-set->o. To conform to what an alt block looks like, must have extra state on left. This also handles ~A, converted to ~{A} set.
  
  Specified by:
  
  set in interface ATNFactory
  
  Overrides:
  
  set in class ParserATNFactory
- checkRange
  
  protected boolean checkRange(GrammarAST leftNode, GrammarAST rightNode, int leftValue, int rightValue)
- stringLiteral
  
  public ATNFactory.Handle stringLiteral(TerminalAST stringLiteralAST)
  
  For a lexer, a string is a sequence of char to match. That is, "fog" is treated as 'f' 'o' 'g' not as a single transition in the DFA. Machine== o-'f'->o-'o'->o-'g'->o and has n+1 states for n characters.
  
  Specified by:
  
  stringLiteral in interface ATNFactory
  
  Overrides:
  
  stringLiteral in class ParserATNFactory
- charSetLiteral
  
  public ATNFactory.Handle charSetLiteral(GrammarAST charSetAST)
  
  [Aa\t ሴa-z\]\p{Letter}\-] char sets
  
  Specified by:
  
  charSetLiteral in interface ATNFactory
  
  Overrides:
  
  charSetLiteral in class ParserATNFactory
- getSetFromCharSetLiteral
  
  public IntervalSet getSetFromCharSetLiteral(GrammarAST charSetAST)
- checkSetCollision
  
  protected void checkSetCollision(GrammarAST ast, IntervalSet set, int el)
- checkSetCollision
  
  protected void checkSetCollision(GrammarAST ast, IntervalSet set, int a, int b)
- tokenRef
  
  public ATNFactory.Handle tokenRef(TerminalAST node)
  
  Description copied from class: ParserATNFactory
  
  From label A build graph o-A->o.
  
  Specified by:
  
  tokenRef in interface ATNFactory
  
  Overrides:
  
  tokenRef in class ParserATNFactory

Class LexerATNFactory

Nested Class Summary

Nested classes/interfaces inherited from interface org.antlr.v4.automata.ATNFactory

Field Summary

Fields inherited from class org.antlr.v4.automata.ParserATNFactory

Constructor Summary

Method Summary

Methods inherited from class org.antlr.v4.automata.ParserATNFactory

Methods inherited from class java.lang.Object

Field Details

codegenTemplates

COMMON_CONSTANTS

indexToActionMap

actionToIndexMap

Constructor Details

LexerATNFactory

Method Details

getCommonConstants

createATN

rule

action

getLexerActionIndex

action

action

lexerAltCommands

lexerCallCommand

lexerCommand

range

set

checkRange

stringLiteral

charSetLiteral

getSetFromCharSetLiteral

checkSetCollision

checkSetCollision

tokenRef