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Fix infinite loops during table generation for left-recursive rules

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Add function calls for arbitrary expressions and dot property access to javascript grammar
This commit is contained in:
Max Brunsfeld 2014-03-26 22:43:08 -07:00
parent 3f770ff3c3
commit 820b6f4020
7 changed files with 2824 additions and 2292 deletions
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13
src/compiler/build_tables/first_set.cc
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@ -19,14 +19,19 @@ namespace tree_sitter {
class FirstSet : public rules::RuleFn<set<Symbol>> {
const PreparedGrammar grammar;
set<Symbol> visited_symbols;
public:
explicit FirstSet(const PreparedGrammar &grammar) : grammar(grammar) {}
void visit(const Symbol *rule) {
if (grammar.has_definition(*rule)) {
value = apply(grammar.rule(*rule));
} else {
value = set<Symbol>({ *rule });
if (visited_symbols.find(*rule) == visited_symbols.end()) {
visited_symbols.insert(*rule);
if (grammar.has_definition(*rule)) {
value = apply(grammar.rule(*rule));
} else {
value = set<Symbol>({ *rule });
}
}
}