/** Parse a CSS style attribute. */
public void parseStyleAttribute(
final Reader reader, String systemID, final CssErrorHandler err, final CssContentHandler doc)
throws IOException, CssException {
CssTokenIterator iter = scan(reader, systemID, err);
doc.startDocument();
while (iter.hasNext()) {
CssToken tk = iter.next();
if (MATCH_SEMI.apply(tk)) {
continue; // starting with ';' is allowed, Issue 238
}
try {
CssDeclaration decl = handleDeclaration(tk, iter, doc, err, true);
if (decl != null) {
doc.declaration(decl);
} else {
// #handleDeclaration has issued errors
return;
}
} catch (PrematureEOFException te) {
// The subroutines report premature EOF to ErrHandler
// on occurrence; if the listener rethrows it will
// be a CssException so we don't catch it here.
break;
}
}
doc.endDocument();
}
/**
* With start token being the first non-ignorable token inside the declaration block, iterate
* issuing CssDeclaration objects until the block ends.
*/
private void handleDeclarationBlock(
CssToken start, CssTokenIterator iter, final CssContentHandler doc, CssErrorHandler err)
throws CssException {
while (true) {
if (MATCH_CLOSEBRACE.apply(start)) {
return;
}
CssDeclaration decl = handleDeclaration(start, iter, doc, err, false);
try {
if (decl != null) {
doc.declaration(decl);
if (debug) {
checkState(MATCH_SEMI_CLOSEBRACE.apply(iter.last));
}
// continue or return: we may be at "; next decl" or "}" or ";}"
if (MATCH_CLOSEBRACE.apply(iter.last)) {
return;
} else if (MATCH_SEMI.apply(iter.last) && MATCH_CLOSEBRACE.apply(iter.peek())) {
iter.next();
return;
} else {
if (debug) {
checkState(MATCH_SEMI.apply(iter.last));
}
// we have ';', expect another decl
start = iter.next(); // first token after ';'
}
} else {
// #handleDeclaration returned null to signal error
// #handleDeclaration has issued errors, we forward
start = iter.next(MATCH_SEMI_CLOSEBRACE);
if (MATCH_SEMI.apply(start)) {
start = iter.next();
}
}
} catch (NoSuchElementException nse) {
err.error(
new CssGrammarException(
GRAMMAR_PREMATURE_EOF, iter.last.location, "';' " + Messages.get("or") + " '}'"));
throw new PrematureEOFException();
}
}
}