Package io.debezium.text

Interface TokenStream.CharacterStream

All Known Implementing Classes:

TokenStream.CharacterArrayStream

Enclosing class:

TokenStream

public static interface TokenStream.CharacterStream

Interface used by a TokenStream.Tokenizer to iterate through the characters in the content input to the TokenStream.

Method Summary

Modifier and Type	Method	Description
boolean	hasNext()	Determine if there is another character available in this stream.
int	index()	Get the index for the last character returned from next().
boolean	isNext(char c)	Determine if the next character on the sream is the supplied value.
boolean	isNext(char nextChar, char followingChar)	Determine if the next two characters on the stream match the supplied values.
boolean	isNext(char nextChar, char nextChar2, char nextChar3)	Determine if the next three characters on the sream match the supplied values.
boolean	isNextAnyOf(char[] characters)	Determine if the next character on the stream matches one of the supplied characters.
boolean	isNextAnyOf(String characters)	Determine if the next character on the stream matches one of the supplied characters.
boolean	isNextLetterOrDigit()	Determine if the next character on the stream is a letter or digit.
boolean	isNextValidXmlCharacter()	Determine if the next character on the stream is a valid XML character.
boolean	isNextValidXmlNameCharacter()	Determine if the next character on the sream is a valid XML NCName character.
boolean	isNextValidXmlNcNameCharacter()	Determine if the next character on the sream is a valid XML NCName character.
boolean	isNextWhitespace()	Determine if the next character on the stream is a whitespace character.
char	next()	Obtain the next character value, and advance the stream.
Position	position(int startIndex)	Get the position for the last character returned from next().
String	substring(int startIndex, int endIndex)	Get the content from the start position to the end position.

Method Detail

hasNext

boolean hasNext()

Determine if there is another character available in this stream.

Returns:

true if there is another character (and next() can be called), or false otherwise

next

char next()

Obtain the next character value, and advance the stream.

Returns:

the next character

Throws:

NoSuchElementException - if there is no next character

index

int index()

Get the index for the last character returned from next().

Returns:

the index of the last character returned

position

Position position(int startIndex)

Get the position for the last character returned from next().

Parameters:

startIndex - the starting index

Returns:

the position of the last character returned; never null

substring

String substring(int startIndex,
                 int endIndex)

Get the content from the start position to the end position.

Parameters:

startIndex - the starting index

endIndex - the index after the last character to include

Returns:

the content

isNextWhitespace

boolean isNextWhitespace()

Determine if the next character on the stream is a whitespace character. This method does not advance the stream.

Returns:

true if there is a next character and it is a whitespace character, or false otherwise

isNextLetterOrDigit

boolean isNextLetterOrDigit()

Determine if the next character on the stream is a letter or digit. This method does not advance the stream.

Returns:

true if there is a next character and it is a letter or digit, or false otherwise

isNextValidXmlCharacter

boolean isNextValidXmlCharacter()

Determine if the next character on the stream is a valid XML character. This method does not advance the stream.

Returns:

true if there is a next character and it is a valid XML character, or false otherwise

isNextValidXmlNameCharacter

boolean isNextValidXmlNameCharacter()

Determine if the next character on the sream is a valid XML NCName character. This method does not advance the stream.

Returns:

true if there is a next character and it is a valid XML Name character, or false otherwise

isNextValidXmlNcNameCharacter

boolean isNextValidXmlNcNameCharacter()

Determine if the next character on the sream is a valid XML NCName character. This method does not advance the stream.

Returns:

true if there is a next character and it is a valid XML NCName character, or false otherwise

isNext

boolean isNext(char c)

Determine if the next character on the sream is the supplied value. This method does not advance the stream.

Parameters:

c - the character value to compare to the next character on the stream

Returns:

true if there is a next character and it is the supplied character, or false otherwise

isNext

boolean isNext(char nextChar,
               char followingChar)

Determine if the next two characters on the stream match the supplied values. This method does not advance the stream.

Parameters:

nextChar - the character value to compare to the next character on the stream

followingChar - the character value to compare to the character immediately after the next character on the stream

Returns:

true if there are at least two characters left on the stream and the first matches nextChar and the second matches followingChar

isNext

boolean isNext(char nextChar,
               char nextChar2,
               char nextChar3)

Determine if the next three characters on the sream match the supplied values. This method does not advance the stream.

Parameters:

nextChar - the character value to compare to the next character on the stream

nextChar2 - the character value to compare to the second character on the stream

nextChar3 - the character value to compare to the second character on the stream

Returns:

true if there are at least two characters left on the stream and the first matches nextChar and the second matches followingChar

isNextAnyOf

boolean isNextAnyOf(char[] characters)

Determine if the next character on the stream matches one of the supplied characters. This method does not advance the stream.

Parameters:

characters - the characters to match

Returns:

true if there is a next character and it does match one of the supplied characters, or false otherwise

isNextAnyOf

boolean isNextAnyOf(String characters)

Determine if the next character on the stream matches one of the supplied characters. This method does not advance the stream.

Parameters:

characters - the characters to match

Returns:

true if there is a next character and it does match one of the supplied characters, or false otherwise