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110 | package Torello.CSS;
import java.util.Vector;
// <colon-token>, <semicolon-token>, <comma-token>,
// <[-token>, <]-token>, <(-token>, <)-token>, <{-token>, and <}-token>.
/**
* A class for saving one of nine different Punctuation-Token classes.
* The nine-available singleton-instances include:
* <B STYLE='color: red;'>{@code ':', ';', ',', '[', ']', '(', ')', '{', '}'}</B>
*/
@Torello.JavaDoc.JDHeaderBackgroundImg(EmbedTagFileID="CSS_TOK")
public final class Punct extends CSSToken
implements CharSequence, java.io.Serializable, Comparable<CharSequence>
{
/** <EMBED CLASS='external-html' DATA-FILE-ID=SVUID> */
protected static final long serialVersionUID = 1;
// ********************************************************************************************
// ********************************************************************************************
// Public & Final Fields
// ********************************************************************************************
// ********************************************************************************************
/**
* The actual character that comprises this Punxtuation-Mark Token. Because Class
* {@code Punct} only allows singleton instances, therefore there is a limited number of
* characters to which this field may be assigned.
*
* <BR /><BR />The nine singleton instances of Class {@code Punct} are built for the following
* nine punctuation characters: <B>{@code ':' ';' ',' '[' ']' '(' ')' '{' '}'}</B>
*/
public final char c;
// ********************************************************************************************
// ********************************************************************************************
// Private Constructor, API "is" and "if" Methods
// ********************************************************************************************
// ********************************************************************************************
private Punct(char c)
{
super("" + c);
this.c = c;
}
@Override
public final boolean isPunct() { return true; }
@Override
public final Punct ifPunct() { return this; }
// ********************************************************************************************
// ********************************************************************************************
// Singleton Stuff
// ********************************************************************************************
// ********************************************************************************************
static final Punct COLON = new Punct(':');
static final Punct SEMICOLON = new Punct(';');
static final Punct COMMA = new Punct(',');
static final Punct LEFT_BRACKET = new Punct('[');
static final Punct RIGHT_BRACKET = new Punct(']');
static final Punct LEFT_PAREN = new Punct('(');
static final Punct RIGHT_PAREN = new Punct(')');
static final Punct LEFT_SQUIGGLY = new Punct('{');
static final Punct RIGHT_SQUIGGLY = new Punct('}');
/**
* Retrieve the singleton instance of a particular CSS Character.
*
* @param c Any Java {@code 'char'} primitive, but only the following characters will generate
* a non-null result from this method: {@code ':', ';', ',', '[', ']', '(', ')', '{', '}' }.
*
* @return The singleton instance of {@code Punct} corresponding to {@code 'c'}. If
* {@code 'c'} doesn't have any corresponding {@code Punct} Singleton-Instance, then null is
* returned.
*/
public static final Punct get(char c)
{
switch (c)
{
case ':': return COLON;
case ';': return SEMICOLON;
case ',': return COMMA;
case '{': return LEFT_SQUIGGLY;
case '}': return RIGHT_SQUIGGLY;
case '(': return LEFT_PAREN;
case ')': return RIGHT_PAREN;
case '[': return LEFT_BRACKET;
case ']': return RIGHT_BRACKET;
default: return null;
}
}
}
|