61 lines
2.3 KiB
C
61 lines
2.3 KiB
C
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#pragma once
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#ifdef SIMDJSON_COMPETITION_RAPIDJSON
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#include "distinct_user_id.h"
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#include <string.h>
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namespace distinct_user_id {
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using namespace rapidjson;
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struct rapidjson_sax {
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struct Handler {
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std::vector<uint64_t>& result;
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bool user = false;
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bool user_id = false;
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Handler(std::vector<uint64_t> &r) : result(r) { }
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bool Key(const char* key, SizeType length, bool copy) {
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// Assume that valid user/id pairs appear only once in main array of user objects
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if (user) { // If already found user object, find id key
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if ((length == 2) && memcmp(key,"id",2) == 0) { user_id = true; }
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}
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else if ((length == 4) && memcmp(key,"user",4) == 0) { user = true; } // Otherwise, find user object
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return true;
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}
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bool Uint(unsigned i) { // id values are treated as Uint (not Uint64) by the reader
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if (user_id) { // Getting id if previous key was "id" for a user
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result.emplace_back(i);
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user_id = false;
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user = false;
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}
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return true;
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}
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// Irrelevant events
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bool Null() { return true; }
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bool Bool(bool b) { return true; }
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bool Double(double d) { return true; }
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bool Int(int i) { return true; }
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bool Int64(int64_t i) { return true; }
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bool Uint64(uint64_t i) { return true; }
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bool RawNumber(const char* str, SizeType length, bool copy) { return true; }
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bool String(const char* str, SizeType length, bool copy) { return true; }
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bool StartObject() { return true; }
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bool EndObject(SizeType memberCount) { return true; }
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bool StartArray() { return true; }
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bool EndArray(SizeType elementCount) { return true; }
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}; // handler
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bool run(simdjson::padded_string &json, std::vector<uint64_t> &result) {
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Reader reader;
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Handler handler(result);
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InsituStringStream ss(json.data());
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reader.Parse<kParseInsituFlag | kParseValidateEncodingFlag | kParseFullPrecisionFlag>(ss,handler);
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return true;
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}
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}; // rapid_jason_sax
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BENCHMARK_TEMPLATE(distinct_user_id, rapidjson_sax)->UseManualTime();
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} // namespace distinct_user_id
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#endif // SIMDJSON_COMPETITION_RAPIDJSON
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