ai.grakn.graql.internal.parser

Class ChannelTokenSource

java.lang.Object

ai.grakn.graql.internal.parser.ChannelTokenSource

All Implemented Interfaces:

org.antlr.v4.runtime.TokenSource

public abstract class ChannelTokenSource
extends Object
implements org.antlr.v4.runtime.TokenSource

Implementation of TokenSource that wraps another TokenSource, only allowing tokens through if they match the expected channel.

This class is necessary when using the UnbufferedTokenStream to parse extremely large files, because that class does not filter out e.g. whitespace and comments.

Author:

Felix Chapman

Constructor Summary

Constructors

Constructor and Description
ChannelTokenSource()

Method Summary

Modifier and Type	Method and Description
int	getCharPositionInLine()
org.antlr.v4.runtime.CharStream	getInputStream()
int	getLine()
String	getSourceName()
org.antlr.v4.runtime.TokenFactory<?>	getTokenFactory()
org.antlr.v4.runtime.Token	nextToken()
static ChannelTokenSource	of(org.antlr.v4.runtime.TokenSource source)
static ChannelTokenSource	of(org.antlr.v4.runtime.TokenSource source, int channel)
void	setTokenFactory(org.antlr.v4.runtime.TokenFactory<?> factory)

Methods inherited from class java.lang.Object

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

Constructor Detail

ChannelTokenSource

public ChannelTokenSource()

Method Detail

of

public static ChannelTokenSource of(org.antlr.v4.runtime.TokenSource source)

of

public static ChannelTokenSource of(org.antlr.v4.runtime.TokenSource source,
                                    int channel)

nextToken

public org.antlr.v4.runtime.Token nextToken()

Specified by:

nextToken in interface org.antlr.v4.runtime.TokenSource

getLine

public int getLine()

Specified by:

getLine in interface org.antlr.v4.runtime.TokenSource

getCharPositionInLine

public int getCharPositionInLine()

Specified by:

getCharPositionInLine in interface org.antlr.v4.runtime.TokenSource

getInputStream

public org.antlr.v4.runtime.CharStream getInputStream()

Specified by:

getInputStream in interface org.antlr.v4.runtime.TokenSource

getSourceName

public String getSourceName()

Specified by:

getSourceName in interface org.antlr.v4.runtime.TokenSource

setTokenFactory

public void setTokenFactory(org.antlr.v4.runtime.TokenFactory<?> factory)

Specified by:

setTokenFactory in interface org.antlr.v4.runtime.TokenSource

getTokenFactory

public org.antlr.v4.runtime.TokenFactory<?> getTokenFactory()

Specified by:

getTokenFactory in interface org.antlr.v4.runtime.TokenSource