@Override
public void visitRuleList(boolean or, ArrayList<Rule> list) {
if (or) {
if (level > 10) {
if (level > 1000) {
// better than stack overflow
throw new AssertionError();
}
list.get(0).accept(this);
return;
}
int idx = random.nextInt(list.size());
level++;
list.get(idx).accept(this);
level--;
return;
}
StringBuilder buff = new StringBuilder();
level++;
for (Rule r : list) {
r.accept(this);
buff.append(sql);
}
level--;
sql = buff.toString();
}
@Override
public void visitRuleOptional(Rule rule) {
if (level > 10 ? random.nextInt(level) == 1 : random.nextInt(4) == 1) {
level++;
rule.accept(this);
level--;
return;
}
sql = "";
}
@Override
public void visitRuleElement(boolean keyword, String name, Rule link) {
if (keyword) {
if (name.startsWith(";")) {
sql = "";
} else {
sql = name.length() > 1 ? " " + name + " " : name;
}
} else if (link != null) {
level++;
link.accept(this);
level--;
} else {
throw new AssertionError(name);
}
}
@Override
public void visitRuleRepeat(boolean comma, Rule rule) {
rule.accept(this);
}