public String toString() {
StringBuilder sb = new StringBuilder();
List<String> ruleStrings = new ArrayList<String>();
for (String leftChild : binaryRulesByLeftChild.keySet()) {
for (BinaryRule binaryRule : getBinaryRulesByLeftChild(leftChild)) {
ruleStrings.add(binaryRule.toString());
}
}
for (String child : unaryRulesByChild.keySet()) {
for (UnaryRule unaryRule : getUnaryRulesByChild(child)) {
ruleStrings.add(unaryRule.toString());
}
}
for (String ruleString : CollectionUtils.sort(ruleStrings)) {
sb.append(ruleString);
sb.append("\n");
}
return sb.toString();
}
