ANTLR 4 Runtime 4.13.1 · org.antlr.v4.runtime.atn.LexerAction

Method Summary

Modifier and Type	Method and Description
public void	execute(Lexer The lexer instance. lexer) Execute the lexer action in the context of the specified `Lexer`.
public LexerActionType	Returns: The serialization type of the lexer action. getActionType() Gets the serialization type of the lexer action.
public boolean	Returns: `true` if the lexer action semantics can be affected by the position of the input `CharStream` at the time it is executed; otherwise, `false`. isPositionDependent() Gets whether the lexer action is position-dependent.

Method Detail

execute back to summary

execute	back to summary
public void execute(Lexer lexer) Execute the lexer action in the context of the specified `Lexer`. For position-dependent actions, the input stream must already be positioned correctly prior to calling this method. Parameters lexer:Lexer The lexer instance.

public void execute(Lexer lexer)

Execute the lexer action in the context of the specified Lexer.

For position-dependent actions, the input stream must already be positioned correctly prior to calling this method.

Parameters

lexer:Lexer: The lexer instance.

getActionType	back to summary
public LexerActionType getActionType() Gets the serialization type of the lexer action. Returns:LexerActionType The serialization type of the lexer action.

getActionType

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public LexerActionType getActionType()

Gets the serialization type of the lexer action.

Returns:LexerActionType: The serialization type of the lexer action.

isPositionDependent back to summary

isPositionDependent	back to summary
public boolean isPositionDependent() Gets whether the lexer action is position-dependent. Position-dependent actions may have different semantics depending on the `CharStream` index at the time the action is executed. Many lexer commands, including `type`, `skip`, and `more`, do not check the input index during their execution. Actions like this are position-independent, and may be stored more efficiently as part of the `LexerATNConfig#lexerActionExecutor`. Returns:boolean `true` if the lexer action semantics can be affected by the position of the input `CharStream` at the time it is executed; otherwise, `false`.

public boolean isPositionDependent()

Gets whether the lexer action is position-dependent. Position-dependent actions may have different semantics depending on the CharStream index at the time the action is executed.

Many lexer commands, including type, skip, and more, do not check the input index during their execution. Actions like this are position-independent, and may be stored more efficiently as part of the LexerATNConfig#lexerActionExecutor.

Returns:boolean: true if the lexer action semantics can be affected by the position of the input CharStream at the time it is executed; otherwise, false.

public Interface LexerAction

Method Summary

Method Detail