华容道高性能计算引擎
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#pragma once
#include <mutex>
#include <vector>
#include <cstdint>
#include <unordered_map>
#include "common_code.h"
class CommonCode;
class ShortCode {
public:
enum Mode {
NORMAL, FAST
};
static enum Mode check_mode();
static void speed_up(enum Mode mode);
uint32_t unwrap() const;
std::string to_string() const;
CommonCode to_common_code() const;
static bool check(uint32_t short_code);
// TODO: std::cout << ShortCode(...) << std::endl;
explicit ShortCode(uint32_t short_code);
explicit ShortCode(const CommonCode &common_code);
explicit ShortCode(const std::string &short_code_str);
ShortCode(uint32_t short_code, enum Mode mode) : ShortCode(short_code) {
speed_up(mode);
}
ShortCode(const CommonCode &common_code, enum Mode mode) : ShortCode(common_code) {
speed_up(mode);
}
ShortCode(const std::string &short_code_str, enum Mode mode) : ShortCode(short_code_str) {
speed_up(mode);
}
// TODO: mark as private after inner test
static uint64_t fast_decode(uint32_t short_code);
static uint32_t fast_encode(uint64_t common_code);
static uint64_t tiny_decode(uint32_t short_code);
static uint32_t tiny_encode(uint64_t common_code);
// static uint64_t tiny_decode_10b(uint32_t short_code);
// static uint32_t tiny_encode_10b(uint64_t common_code);
// TODO: ShortCode::create() / ShortCode::from_str(...) / ShortCode::from_common_code(...)
// static uint32_t fast_encode_legacy(uint64_t common_code);
private:
uint32_t code;
// static std::mutex map_building;
static bool fast_mode_available;
static bool normal_mode_available;
static const uint32_t SHORT_CODE_LIMIT = 29334498;
/// NOTE: using binary search instead of global vector and unordered_map
/// for some test, the new function only using < 170MB memory, while the legacy using > 1.5GB
/// but the legacy one is more easy and a little fast.
/// BTW, the new one init less than 1.2s, legacy one need about 15s
// static std::vector<uint64_t> all_cases_list; // short_code -> common_code
// static std::unordered_map<uint64_t, uint32_t> all_cases_dict; // common_code -> short_code
// static void build_mappings();
// static uint64_t tiny_decode(uint32_t short_code);
// static uint32_t tiny_encode(uint64_t common_code);
};