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🎨 flatten_grammar

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This commit is contained in:
Max Brunsfeld 2016-11-09 20:25:20 -08:00
parent 89c01a7b22
commit 7bcae8f6a8
2 changed files with 29 additions and 33 deletions
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6
src/compiler/prepare_grammar/flatten_grammar.cc
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@ -1,5 +1,4 @@
#include "compiler/prepare_grammar/flatten_grammar.h"
#include <string>
#include <vector>
#include <algorithm>
#include "compiler/prepare_grammar/extract_choices.h"
@ -14,7 +13,6 @@ namespace tree_sitter {
namespace prepare_grammar {
using std::find;
using std::string;
using std::vector;
class FlattenRule : public rules::RuleFn<void> {
@ -81,8 +79,8 @@ SyntaxGrammar flatten_grammar(const InitialSyntaxGrammar &grammar) {
vector<Production> productions;
for (const rule_ptr &rule_component : extract_choices(variable.rule)) {
Production production = FlattenRule().flatten(rule_component);
if (std::find(productions.begin(), productions.end(), production) ==
productions.end())
auto end = productions.end();
if (find(productions.begin(), end, production) == end)
productions.push_back(production);
}
result.variables.push_back(