parsii.tokenizer

Class Char

java.lang.Object

parsii.tokenizer.Char

All Implemented Interfaces:

Position

public class Char
extends Object
implements Position

Represents a single character read from a LookaheadReader.

Provides the value as well as an exact position of the character in the stream. Also some test methods are provided to determine the character class of the internal value.

See Also:

LookaheadReader

Field Summary

Fields inherited from interface parsii.tokenizer.Position

UNKNOWN

Method Summary

Modifier and Type	Method and Description
int	getLine() Returns the line number of this position.
int	getPos() Returns the character position within the line of this position
String	getStringValue() Returns the internal value as string.
char	getValue() Returns the value of this char.
boolean	is(char... tests) Checks if the internal value is one of the given characters
boolean	isDigit() Determines if the value is a digit (0..9)
boolean	isEndOfInput() Determines if this instance represents the end of input indicator
boolean	isLetter() Determines if the value is a letter (a..z, A..Z)
boolean	isNewLine() Determines if the value is a line break
boolean	isWhitepace() Determines if the value is a whitespace character like a blank, tab or line break
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

getValue

public char getValue()

Returns the value of this char.

Returns:

the internal value read from the stream

getLine

public int getLine()

Description copied from interface: Position

Returns the line number of this position.

Specified by:

getLine in interface Position

Returns:

the one-based line number of this position

getPos

public int getPos()

Description copied from interface: Position

Returns the character position within the line of this position

Specified by:

getPos in interface Position

Returns:

the one-based character position of this

isDigit

public boolean isDigit()

Determines if the value is a digit (0..9)

Returns:

true if the internal value is a digit, false otherwise

isLetter

public boolean isLetter()

Determines if the value is a letter (a..z, A..Z)

Returns:

true if the internal value is a letter, false otherwise

isWhitepace

public boolean isWhitepace()

Determines if the value is a whitespace character like a blank, tab or line break

Returns:

true if the internal value is a whitespace character, false otherwise

isNewLine

public boolean isNewLine()

Determines if the value is a line break

Returns:

true if the internal value is a line break, false otherwise

isEndOfInput

public boolean isEndOfInput()

Determines if this instance represents the end of input indicator

Returns:

true if this instance represents the end of the underlying input, false otherwise

toString

public String toString()

Overrides:

toString in class Object

is

public boolean is(char... tests)

Checks if the internal value is one of the given characters

Parameters:

tests - the characters to check against

Returns:

true if the value equals to one of the give characters, false otherwise

getStringValue

public String getStringValue()

Returns the internal value as string.

Returns:

the internal character as string or "" if this is the end of input indicator