org.apache.drill.exec.record.metadata.schema.parser

Class UpperCaseCharStream

java.lang.Object

org.apache.drill.exec.record.metadata.schema.parser.UpperCaseCharStream

All Implemented Interfaces:

org.antlr.v4.runtime.CharStream, org.antlr.v4.runtime.IntStream

public class UpperCaseCharStream
extends Object
implements org.antlr.v4.runtime.CharStream

Is used for case-insensitive lexing. Constructs a new stream wrapping forcing all characters to be in upper case. Allows building lexical rules match only upper case, making lexer easier to read.

Field Summary

Fields inherited from interface org.antlr.v4.runtime.IntStream

EOF, UNKNOWN_SOURCE_NAME

Constructor Summary

Constructors

Constructor and Description
UpperCaseCharStream(org.antlr.v4.runtime.CharStream stream)

Method Summary

Modifier and Type	Method and Description
void	consume()
String	getSourceName()
String	getText(org.antlr.v4.runtime.misc.Interval interval)
int	index()
int	LA(int i)
int	mark()
void	release(int marker)
void	seek(int index)
int	size()

Methods inherited from class java.lang.Object

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

Constructor Detail

UpperCaseCharStream

public UpperCaseCharStream(org.antlr.v4.runtime.CharStream stream)

Method Detail

getText

public String getText(org.antlr.v4.runtime.misc.Interval interval)

Specified by:

getText in interface org.antlr.v4.runtime.CharStream

consume

public void consume()

Specified by:

consume in interface org.antlr.v4.runtime.IntStream

LA

public int LA(int i)

Specified by:

LA in interface org.antlr.v4.runtime.IntStream

mark

public int mark()

Specified by:

mark in interface org.antlr.v4.runtime.IntStream

release

public void release(int marker)

Specified by:

release in interface org.antlr.v4.runtime.IntStream

index

public int index()

Specified by:

index in interface org.antlr.v4.runtime.IntStream

seek

public void seek(int index)

Specified by:

seek in interface org.antlr.v4.runtime.IntStream

size

public int size()

Specified by:

size in interface org.antlr.v4.runtime.IntStream

getSourceName

public String getSourceName()

Specified by:

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