org.antlr.v4.runtime.atn

类 LexerChannelAction

java.lang.Object

org.antlr.v4.runtime.atn.LexerChannelAction

所有已实现的接口:

LexerAction

public final class LexerChannelAction
extends Object
implements LexerAction

Implements the channel lexer action by calling Lexer.setChannel(int) with the assigned channel.

从以下版本开始:

4.2

作者:

Sam Harwell

构造器概要

构造器

构造器和说明
LexerChannelAction(int channel) Constructs a new channel action with the specified channel value.

方法概要

限定符和类型	方法和说明
boolean	equals(Object obj)
void	execute(Lexer lexer) Execute the lexer action in the context of the specified Lexer.
LexerActionType	getActionType() Gets the serialization type of the lexer action.
int	getChannel() Gets the channel to use for the Token created by the lexer.
int	hashCode()
boolean	isPositionDependent() Gets whether the lexer action is position-dependent.
String	toString()

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

构造器详细资料

LexerChannelAction

public LexerChannelAction(int channel)

Constructs a new channel action with the specified channel value.

参数:

channel - The channel value to pass to Lexer.setChannel(int).

方法详细资料

getChannel

public int getChannel()

Gets the channel to use for the Token created by the lexer.

返回:

The channel to use for the Token created by the lexer.

getActionType

public LexerActionType getActionType()

Gets the serialization type of the lexer action.

指定者:

getActionType 在接口中 LexerAction

返回:

This method returns LexerActionType.CHANNEL.

isPositionDependent

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 ATNConfig.getLexerActionExecutor().

指定者:

isPositionDependent 在接口中 LexerAction

返回:

This method returns false.

execute

public void execute(@NotNull
                    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.

This action is implemented by calling Lexer.setChannel(int) with the value provided by getChannel().

指定者:

execute 在接口中 LexerAction

参数:

lexer - The lexer instance.

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

equals

public boolean equals(Object obj)

覆盖:

equals 在类中 Object

toString

public String toString()

覆盖:

toString 在类中 Object