ruleIndexMap property
Get a map from rule names to rule indexes.
Used for XPath and tree pattern compilation.
Implementation
Map<String, int> get ruleIndexMap {
var result = ruleIndexMapCache[ruleNames];
if (result == null) {
result = Map.unmodifiable(toMap(ruleNames));
ruleIndexMapCache[ruleNames] = result;
}
return result;
}