+ public void complain(Node n, HashMap<String,HashSet<String>> errors, boolean force) {
+ if (n.touched) return;
+ n.touched = true;
+ for(Position p : n.state) {
+ //if (!p.isLast()) {
+ if (((p.isFirst() || p.isLast()) && !force) || p.owner().name==null) {
+ for(Node n2 : n.parents())
+ complain(n2, errors, force | p.isFirst());
+ } else {
+ String seqname = p.owner().name;
+ HashSet<String> hs = errors.get(seqname);
+ if (hs==null) errors.put(seqname, hs = new HashSet<String>());
+ hs.add(p.element()+"");
+ //String s = " while parsing " + seqname + ": expected a " + p.element();
+ //"\n";
+ /*
+ s += " parsed: ";
+ for(Position p2 = p.owner().firstp(); p2 != null && p2 != p && !p2.isLast(); p2 = p2.next()) s += (p2.element() + " ");
+ s += "\n";
+ s += " expected: ";
+ for(Position p2 = p; p2 != null && !p2.isLast(); p2 = p2.next()) s += (p2.element() + " ");
+ */
+ //s += "\n";
+ //errors.add(s);
+ }
+ }
+ }
+
+ public String black(Object o) { return "\033[30m"+o+"\033[0m"; }
+ public String red(Object o) { return "\033[31m"+o+"\033[0m"; }
+ public String green(Object o) { return "\033[32m"+o+"\033[0m"; }
+ public String yellow(Object o) { return "\033[33m"+o+"\033[0m"; }
+ public String blue(Object o) { return "\033[34m"+o+"\033[0m"; }
+ public String purple(Object o) { return "\033[35m"+o+"\033[0m"; }
+ public String cyan(Object o) { return "\033[36m"+o+"\033[0m"; }
+ public String el(Object e) {
+ String s = e.toString();
+ if (s.length()==0 || s.charAt(0)!='\"' || s.charAt(s.length()-1)!='\"') return yellow(s);
+ s = s.substring(1);
+ s = s.substring(0, s.length()-1);
+ StringBuffer ret = new StringBuffer();
+ for(int i=0; i<s.length(); i++) {
+ if (s.charAt(i)=='\\' && i<s.length()-1) ret.append(s.charAt(++i));
+ else ret.append(s);
+ }
+ return purple(ret.toString());
+ }
+ public String error(String message) {
+ String lookAhead = token==null ? "<EOF>" : token.toString();
+ StringBuffer ret = new StringBuffer();
+ ret.append("\n ");
+ ret.append(message);
+ HashMap<String,HashSet<String>> errors = new HashMap<String,HashSet<String>>();
+ for(Node n : hash.values()) complain(n, errors, false);
+ for(String s : errors.keySet()) {
+ ret.append(" while parsing " + yellow(s));
+ HashSet<String> hs = errors.get(s);
+ if (hs.size()==1) ret.append(" expected " + yellow(el(hs.iterator().next())) + "\n");
+ else {
+ ret.append(" expected ");
+ boolean first = true;
+ for(String s2 : hs) {
+ if (!first) ret.append(" or ");
+ first = false;
+ ret.append(yellow(el(s2)));
+ }
+ ret.append("\n");
+ }
+ }
+ return ret.toString();
+ }
+
+ public boolean isDone() throws Parser.Failed {
+ if (token != null) return false;
+ if (token==null && finalResult==null)
+ throw new Parser.Failed(error(red("unexpected end of file\n")),
+ getLocation());
+ return true;