class ANTLRLexerState extends AnyRef
This class stores the state of an ANTLR lexer, such that it can be applied back to the lexer instance at a later time.
The default implementation stores the following fields, which
provides support for any ANTLR 4 single- or multi-mode lexer that
does not rely on custom state information for semantic predicates,
custom embedded actions, and/or overridden methods such as Lexer#nextToken or Lexer#emit.
Lexer#_mode: The current lexer mode.Lexer#_modeStack: The current lexer mode stack.
If your lexer requires additional information to be stored, this class must be extended in the following ways.
- Override
#applyto ensure that the additional state information is applied to the provided lexer instance. - Override
#hashCodeImpland#equalsto ensure that the caching features provided are able to efficiently store the resulting state instances.
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- new ANTLRLexerState(mode: Int, modeStack: IntegerStack)
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- def apply(lexer: Lexer): Unit
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- def getMode(): Int
Gets the value of
Lexer#_modefor the current lexer state.Gets the value of
Lexer#_modefor the current lexer state.- returns
The value of
Lexer#_modefor the current lexer state.
- def getModeStack(): Array[Int]
Gets the mode stack stored in
Lexer#_modeStackfor the current lexer state.Gets the mode stack stored in
Lexer#_modeStackfor the current lexer state.- returns
The mode stack stored in
Lexer#_modeStackfor the current lexer state, ornullif the mode stack is empty.
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- def hashCodeImpl(): Int
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- protected[lexer]
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- Deprecated
(Since version 9)