gnu.prolog.io
Class CharConversionTable

java.lang.Object
  gnu.prolog.io.CharConversionTable

public class CharConversionTable
extends Object

A conversion map, used by char_conversion and current_char_conversion and TextInputPrologStream.readTerm(Term,Interpreter,ReadOptions) .

Author:

Michiel Hendriks

Field Summary

protected Map<Character,Character>

conv

Constructor Summary

CharConversionTable()

Method Summary

String	applyConversion(String fromString) Apply this CharConversionTable to fromString
Term	charConvert(Term term, Environment environment) Apply CharConversionTable to term if this should happen.
char	convert(char input) Convert a character.
Set<Character>	convertsTo(char toChar) Returns the set of characters which are converted to this character
boolean	hasConversions()
void	setConversion(char from, char to) Set the conversion of a character

Methods inherited from class java.lang.Object

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

Field Detail

conv

protected Map<Character,Character> conv

Constructor Detail

CharConversionTable

public CharConversionTable()

Method Detail

hasConversions

public boolean hasConversions()

Returns:

True if there are conversions (other than c==c)

setConversion

public void setConversion(char from,
                          char to)

Set the conversion of a character

Parameters:

from -

to -

convert

public char convert(char input)

Convert a character.

Parameters:

input -

Returns:

the converted character

convertsTo

public Set<Character> convertsTo(char toChar)

Returns the set of characters which are converted to this character

Parameters:

toChar -

Returns:

the set of characters which are converted to this character

charConvert

public Term charConvert(Term term,
                        Environment environment)

Apply CharConversionTable to term if this should happen.

Parameters:

term - the term to apply the conversion to

environment - the environment this is happening in (provides the flag value)

Returns:

the converted term.

See Also:

TextInputPrologStream.readTerm(Term,Interpreter,ReadOptions)

applyConversion

public String applyConversion(String fromString)

Apply this CharConversionTable to fromString

Parameters:

fromString - the string to apply the conversion to

Returns:

the converted string