private static Map<String, Pattern> patterns = new HashMap<String, Pattern>();
@Override
public Token go() {
IContext ctx = ctx();
if (ctx.insideDirectiveComment()) {
return null;
//raiseParseException("directive comment not closed");
}
ICodeType type = ctx.peekCodeType();
while (null != type) {
String sCommentStart = type.commentStart();
if (!S.empty(sCommentStart)) {
sCommentStart = S.escapeRegex(sCommentStart).toString();
// try <!-- @ first
String s = "(" + sCommentStart + "\\s*" + ")" + ctx.getDialect().a() + ".*";
Pattern p = patterns.get(s);
if (null == p) {
p = Pattern.compile(s, Pattern.DOTALL);
patterns.put(s, p);
}
Matcher m = p.matcher(remain());
if (m.matches()) {
s = m.group(1);
ctx.step(s.length());
ctx.enterDirectiveComment();
return Token.EMPTY_TOKEN;
}
// try <!-- }
s = "(" + sCommentStart + "\\s*)\\}.*";
p = patterns.get(s);
if (null == p) {
p = Pattern.compile(s, Pattern.DOTALL);
patterns.put(s, p);
}
m = p.matcher(remain());
if (m.matches()) {
s = m.group(1);
ctx.step(s.length());
ctx.enterDirectiveComment();
return Token.EMPTY_TOKEN;
}
}
type = type.getParent();
}