private String getDebugString(int max) {
assert max > 0;
StringBuffer result = new StringBuffer();
int start = Math.max(offset - max, 0);
int end = Math.min(offset + max, tokens.size());
for (int i = start; i < end; i++) {
JavaScriptToken token = tokens.get(i);
if (i == offset - 1) {
result.append(" ---> ");
}
result.append(token.getValue());
if (i == offset - 1) {
result.append(" <--- ");
}
}
return result.toString();
}
