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#pragma once
#include "defs.h"
#include <util/generic/fwd.h>
#include <util/generic/string.h>
#include <util/generic/vector.h>
#include <unordered_set>
namespace NSQLComplete {
// std::vector is used to prevent copying a C3 output
struct TSuggestedToken {
TTokenId Number;
std::vector<TTokenId> Following;
};
struct TMatchedRule {
TRuleId Index;
TParserCallStack ParserCallStack;
};
struct TC3Candidates {
TVector<TSuggestedToken> Tokens;
TVector<TMatchedRule> Rules;
};
class IC3Engine {
public:
using TPtr = THolder<IC3Engine>;
// std::unordered_set is used to prevent copying into c3 core
struct TConfig {
std::unordered_set<TTokenId> IgnoredTokens;
std::unordered_set<TRuleId> PreferredRules;
};
virtual TC3Candidates Complete(TStringBuf prefix) = 0;
virtual ~IC3Engine() = default;
};
} // namespace NSQLComplete
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