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package bjc.rgens.parser;
/**
* The exception thrown when something goes wrong while parsing a
* grammar.
*
* @author student
*/
public class GrammarException extends RuntimeException {
/* Serialization ID. */
private static final long serialVersionUID = -7287427479316953668L;
private String rootMessage;
/**
* Create a new grammar exception with the specified message.
*
* @param msg
* The message for this exception.
*/
public GrammarException(String msg) {
super(msg);
}
/**
* Create a new grammar exception with the specified message and
* cause.
*
* @param msg
* The message for this exception.
*
* @param cause
* The cause of this exception.
*/
public GrammarException(String msg, Exception cause) {
super(msg, cause);
}
/**
* Create a new grammar exception with the specified message.
*
* @param msg
* The message for this exception.
*/
public GrammarException(String msg, String rootMsg) {
super(msg);
this.rootMessage = rootMsg;
}
/**
* Create a new grammar exception with the specified message and
* cause.
*
* @param msg
* The message for this exception.
*
* @param cause
* The cause of this exception.
*/
public GrammarException(String msg, Exception cause, String rootMsg) {
super(msg, cause);
this.rootMessage = rootMsg;
}
/**
* Get the root cause of this exception.
*
* @return The root cause of this exception.
*/
public String getRootMessage() {
return rootMessage == null? getMessage() : rootMessage;
}
}
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