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Allow users to put their own auxiliary rules in grammars

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This commit is contained in:
Max Brunsfeld 2014-02-13 13:09:00 -08:00
parent 812f27f43a
commit a77ca1ee08
3 changed files with 138 additions and 109 deletions
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9
src/compiler/prepare_grammar/expand_repeats.cpp
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@ -46,13 +46,16 @@ namespace tree_sitter {
};
Grammar expand_repeats(const Grammar &grammar) {
map<const string, const rule_ptr> result;
map<const string, const rule_ptr> rules;
map<const string, const rule_ptr> aux_rules(grammar.aux_rules);
RepeatExpander visitor;
for (auto pair : grammar.rules)
result.insert({ pair.first, visitor.apply(pair.second) });
rules.insert({ pair.first, visitor.apply(pair.second) });
aux_rules.insert(visitor.aux_rules.begin(), visitor.aux_rules.end());
return Grammar(grammar.start_rule_name, result, visitor.aux_rules);
return Grammar(grammar.start_rule_name, rules, aux_rules);
}
}
}