feat: support group cases fast convert

src/core/group/group.h

@@ -200,42 +200,64 @@ public:
 
 class GroupCases {
 public:
+    // TODO: rename as Info and changed as class
     struct info_t {
         uint16_t type_id;
         uint16_t group_id;
         uint32_t case_id;
 
-        // TODO: should we keep it valid? (convert without check)
+#ifndef KLSK_NDEBUG
+        friend std::ostream& operator<<(std::ostream &out, info_t self) {
+            out << std::format("{}-{}-{}", self.type_id, self.group_id, self.case_id);
+            return out;
+        }
+#endif
+
+        // TODO: keep info_t valid (convert without check)
     };
 
+    // ------------------------------------------------------------------------------------- //
+
     /// Execute the build process.
     void build();
 
     /// Execute the build process without blocking.
     void build_async(Executor &&executor, Notifier &&callback);
 
-    static info_t to_info_t(codec::ShortCode short_code);
+    // ------------------------------------------------------------------------------------- //
 
-    static codec::CommonCode from_info_t(info_t info);
+    /// Parse CommonCode from group info.
+    codec::CommonCode parse(info_t info);
+
+    /// Get group info from RawCode.
+    info_t group_info(codec::RawCode raw_code);
+
+    /// Get group info from short code.
+    info_t group_info(codec::ShortCode short_code);
 
-    /// Get the CommonCode using the group info.
-    // static codec::CommonCode parse(const info_t &info);
+    /// Get group info from common code.
+    info_t group_info(codec::CommonCode common_code);
 
-    /// Get group info according to specified case.
-    // static info_t encode(const codec::RawCode &raw_code);
-    // static info_t encode(const codec::CommonCode &common_code);
+    // ------------------------------------------------------------------------------------- //
 
 private:
     bool available_ = false;
     std::mutex building_ {};
 
-    // static codec::CommonCode fast_decode(const info_t &info);
-    // static info_t fast_encode(const codec::CommonCode &common_code);
-
     KLSK_INSTANCE(GroupCases)
+
+public:
+    // fast api
+    static info_t to_info_t(codec::ShortCode short_code);
+    static codec::CommonCode from_info_t(info_t info);
+
+    // TODO: add to_info_t(CommonCode) interface
+
+    // TODO: tiny api
 };
 
 } // namespace klotski::cases
 
 #include "internal/group_union.inl"
+#include "internal/group_cases.inl"
 #include "internal/group.inl"

src/core/group/internal/group_cases.cc

@@ -5,10 +5,20 @@
 
 using klotski::cases::GroupCases;
 
+using klotski::codec::ShortCode;
+
 using klotski::codec::CommonCode;
 
 using klotski::cases::RangesUnion;
 
+using klotski::cases::GroupUnion;
+
+using klotski::cases::ALL_GROUP_NUM;
+
+using klotski::cases::TYPE_ID_LIMIT;
+
+using klotski::cases::ALL_CASES_NUM_;
+
 struct tmp_t {
     uint32_t group_id : 12;
     uint32_t case_id  : 20;
@@ -21,38 +31,26 @@ static_assert(sizeof(tmp_t) == 4);
 std::vector<RangesUnion> build_ranges_unions() {
 
     std::vector<RangesUnion> unions;
-    unions.reserve(25422);
-
-    // auto group_union = klotski::cases::GroupUnion::unsafe_create(169);
+    unions.reserve(ALL_GROUP_NUM);
 
     // TODO: add white list for single-group unions
 
-    for (uint32_t type_id = 0; type_id < klotski::cases::TYPE_ID_LIMIT; ++type_id) {
-        auto group_union = klotski::cases::GroupUnion::unsafe_create(type_id);
+    for (uint32_t type_id = 0; type_id < TYPE_ID_LIMIT; ++type_id) {
+        auto group_union = GroupUnion::unsafe_create(type_id);
         for (auto group : group_union.groups()) {
             unions.emplace_back(group.cases());
         }
     }
 
-    std::cout << unions.size() << std::endl;
-
     return unions;
 }
 
 CommonCode GroupCases::from_info_t(info_t info) {
 
-    std::vector<RangesUnion> data = build_ranges_unions();
-
-    // TODO: build as static data
-
-    // TODO: loop [0, 25422) -> get RangesUnion of all flat_ids
+    // TODO: build as static class member (ptr)
+    static std::vector<RangesUnion> data = build_ranges_unions();
 
     auto flat_id = GROUP_OFFSET[info.type_id] + info.group_id;
-    std::cout << "flat_id = " << flat_id << std::endl;
-
-    // auto codes = data[flat_id].codes();
-    // std::stable_sort(codes.begin(), codes.end());
-    // std::cout << codes[info.case_id] << std::endl;
 
     auto &cases = data[flat_id];
     // TODO: make offset table for perf
@@ -68,23 +66,50 @@ CommonCode GroupCases::from_info_t(info_t info) {
         }
     }
 
-    std::cout << "head = " << head << std::endl;
-    std::cout << info.case_id << std::endl;
+    auto range = cases[head][info.case_id];
+    return CommonCode::unsafe_create(head << 32 | range);
+}
+
+static std::vector<tmp_t> build_tmp_data() {
 
-    // TODO: need sort in `Group::cases`
-    std::stable_sort(cases[head].begin(), cases[head].end());
+    std::vector<tmp_t> data;
+    data.resize(ALL_CASES_NUM_);
+    ShortCode::speed_up(true);
+
+    for (uint32_t type_id = 0; type_id < TYPE_ID_LIMIT; ++type_id) {
+        auto group_union = GroupUnion::unsafe_create(type_id);
+        for (auto group : group_union.groups()) {
+            uint32_t group_id = group.group_id();
+
+            auto codes = group.cases().codes();
+            for (uint32_t case_id = 0; case_id < codes.size(); ++case_id) {
+                auto short_code = codes[case_id].to_short_code();
+
+                data[short_code.unwrap()] = tmp_t {
+                    .group_id = group_id,
+                    .case_id = case_id,
+                };
 
-    std::cout << CommonCode::unsafe_create(head << 32 | cases[1][1909]) << std::endl;
+            }
+        }
+    }
+
+    return data;
 
-    return CommonCode::unsafe_create(0);
 }
 
 GroupCases::info_t GroupCases::to_info_t(codec::ShortCode short_code) {
-    std::vector<tmp_t> data;
 
-    // TODO: build as static data
+    // TODO: build as static class member (ptr)
+    static auto data = build_tmp_data();
 
-    // TODO: loop from `std::vector<RangesUnion>`
+    uint16_t type_id = GroupUnion::from_short_code(short_code).unwrap(); // NOTE: need to convert as CommonCode
+    uint16_t group_id = data[short_code.unwrap()].group_id;
+    auto case_id = data[short_code.unwrap()].case_id;
 
-    return {};
+    return info_t {
+        .type_id = type_id,
+        .group_id = group_id,
+        .case_id = case_id,
+    };
 }

src/core/group/internal/group_cases.inl

@@ -0,0 +1,29 @@
+#pragma once
+
+namespace klotski::cases {
+
+inline void GroupCases::build() {
+
+}
+
+inline void GroupCases::build_async(Executor &&executor, Notifier &&callback) {
+
+}
+
+inline codec::CommonCode GroupCases::parse(GroupCases::info_t info) {
+    return codec::CommonCode::unsafe_create(0);
+}
+
+inline GroupCases::info_t GroupCases::group_info(codec::RawCode raw_code) {
+    return info_t {};
+}
+
+inline GroupCases::info_t GroupCases::group_info(codec::ShortCode short_code) {
+    return info_t {};
+}
+
+inline GroupCases::info_t GroupCases::group_info(codec::CommonCode common_code) {
+    return info_t {};
+}
+
+} // namespace klotski::cases

src/core/main.cc

@@ -40,11 +40,14 @@ int main() {
 
     const auto start = std::chrono::system_clock::now();
 
-    const auto common_code = CommonCode::unsafe_create(0x1A9BF0C00);
-    const auto group = Group::from_common_code(common_code);
+//    const auto common_code = CommonCode::unsafe_create(0x1A9BF0C00);
+//    const auto group = Group::from_common_code(common_code);
 
-    // GroupCases::from_info_t({169, 1, 7472});
-    // GroupCases::to_info_t(CommonCode::unsafe_create(0x1A9BF0C00).to_short_code());
+    std::cout << GroupCases::from_info_t({169, 1, 7472}) << std::endl;
+    std::cout << GroupCases::from_info_t({164, 0, 30833}) << std::endl;
+
+    std::cout << GroupCases::to_info_t(CommonCode::unsafe_create(0x1A9BF0C00).to_short_code()) << std::endl;
+    std::cout << GroupCases::to_info_t(CommonCode::unsafe_create(0x4FEA13400).to_short_code()) << std::endl;
 
     std::cerr << std::chrono::system_clock::now() - start << std::endl;