/**
* Get all tokes in the give category.
*
* @param category The category to get.
* @return A collection of kinds in this category.
*/
public static Collection<Token.Kind> getCategory(Token.Category category) {
LinkedList<Token.Kind> kinds = new LinkedList<Token.Kind>();
for (Token.Kind kind : Token.Kind.values()) {
if (kind.category == null) {
System.out.println(kind.name());
}
if (kind.category.equals(category)) {
kinds.add(kind);
}
}
return kinds;
}
/**
* Try to find a token that matches the lexeme in a give category.
*
* @param category The category of tokens to consider.
* @param lexeme The lexeme to look for for.
* @return A matching Kind or null.
*/
public static Token.Kind matchingKind(Token.Category category, String lexeme) {
boolean found = false;
Collection<Token.Kind> catKinds = Token.Kind.getCategory(category);
Iterator<Token.Kind> iterator = catKinds.iterator();
Token.Kind curKind = null;
while (!found && iterator.hasNext()) {
curKind = iterator.next();
if (curKind.matches(lexeme)) {
found = true;
}
}
return found ? curKind : null;
}
private String reportSyntaxError(Token.Kind kind) {
String message =
"SyntaxError("
+ lineNumber()
+ ","
+ charPosition()
+ ")[Expected "
+ kind.name()
+ " but got "
+ currentToken.getKind().name()
+ ".]";
errorBuffer.append(message + "\n");
return message;
}