public StringBuilder set(Node<Node<?, ?>, Node<?, ?>> set) {
boolean leftIsToken = g.get.token.compute(set.left);
boolean rightIsToken = g.get.token.compute(set.right);
// If neither (or both) sides are terminals, just pick a random side
if (leftIsToken == rightIsToken) {
return flip(set);
}
// Randomly pick the nonterminal side a limited number of times.
int number = rand.nextInt(3) + 1;
if (number <= 2) {
depthLimit -= number;
}
if (!leftIsToken) {
if (number <= 2 && depthLimit >= 0) {
Node.accept(this, set.left);
} else {
Node.accept(this, set.right);
}
} else if (!rightIsToken) {
if (number <= 2 && depthLimit >= 0) {
Node.accept(this, set.right);
} else {
Node.accept(this, set.left);
}
}
// System.out.format("left %s : token? %b\n", g.get.printer.compute(set.left), leftIsToken);
// System.out.format("right %s : token? %b\n", g.get.printer.compute(set.right), rightIsToken);
return buffer;
}
private StringBuilder flip(Node<Node<?, ?>, Node<?, ?>> set) {
if (rand.nextInt(2) == 0) {
Node.accept(this, set.left);
} else {
Node.accept(this, set.right);
}
return buffer;
}
public StringBuilder list(Node<Node<?, ?>, Node<?, ?>> language) {
Node.accept(this, language.left);
Node.accept(this, language.right);
return buffer;
}
public StringBuilder loop(Node<Node<?, ?>, Node<?, ?>> language) {
for (int iterations = rand.nextInt(loopLimit); iterations > 0; iterations--) {
Node.accept(this, language.left);
}
return buffer;
}
public StringBuilder rule(Node<Node<String, Void>, Node<?, ?>> rule) {
Node.accept(this, rule.right);
return buffer;
}