package prefuse.data.parser;
/**
* DataParser instance that "parses" a String value from a text string, this
* is the default fallback parser, which simply returns the string value
* to be parsed.
*
* @author <a href="http://jheer.org">jeffrey heer</a>
*/
public class StringParser implements DataParser {
/**
* Returns String.class.
* @see prefuse.data.parser.DataParser#getType()
*/
public Class getType() {
return String.class;
}
/**
* @see prefuse.data.parser.DataParser#format(java.lang.Object)
*/
public String format(Object value) {
if ( value == null ) return null;
if ( !(value instanceof String) )
throw new IllegalArgumentException(
"This class can only format Objects of type String.");
return (String)value;
}
/**
* @see prefuse.data.parser.DataParser#canParse(java.lang.String)
*/
public boolean canParse(String text) {
return true;
}
/**
* @see prefuse.data.parser.DataParser#parse(java.lang.String)
*/
public Object parse(String text) throws DataParseException {
return text;
}
/**
* Simply returns the input string.
* @param text the text string to "parse"
* @return the input text string
* @throws DataParseException never actually throws an exception
*/
public String parseString(String text) throws DataParseException {
return text;
}
} // end of class StringParser