Use compile-time polymorphism in Hasher

...since runtime polymorphism was there just to avoid including openssl as a public dependency. A combination of forward declarations, std::variant and std::unique_ptr is used instead.

1 files changed, 0 insertions, 54 deletions

diff --git a/src/buildtool/crypto/hash_impl_sha256.cpp b/src/buildtool/crypto/hash_impl_sha256.cpp
deleted file mode 100644
index 8aa4d04f..00000000
--- a/src/buildtool/crypto/hash_impl_sha256.cpp
+++ /dev/null
@@ -1,54 +0,0 @@
-// Copyright 2022 Huawei Cloud Computing Technology Co., Ltd.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "src/buildtool/crypto/hash_impl_sha256.hpp"
-
-#include <array>
-#include <cstdint>
-
-#include "openssl/sha.h"
-
-/// \brief Hash implementation for SHA-256
-class HashImplSha256 final : public Hasher::IHashImpl {
-  public:
-    HashImplSha256() { initialized_ = SHA256_Init(&ctx_) == 1; }
-
-    auto Update(std::string const& data) noexcept -> bool final {
-        return initialized_ and
-               SHA256_Update(&ctx_, data.data(), data.size()) == 1;
-    }
-
-    auto Finalize() && noexcept -> std::optional<std::string> final {
-        if (initialized_) {
-            auto out = std::array<std::uint8_t, SHA256_DIGEST_LENGTH>{};
-            if (SHA256_Final(out.data(), &ctx_) == 1) {
-                return std::string{out.begin(), out.end()};
-            }
-        }
-        return std::nullopt;
-    }
-
-    [[nodiscard]] auto GetHashLength() const noexcept -> size_t final {
-        return SHA256_DIGEST_LENGTH * kCharsPerNumber;
-    }
-
-  private:
-    SHA256_CTX ctx_{};
-    bool initialized_{};
-};
-
-/// \brief Factory for SHA-256 implementation
-auto CreateHashImplSha256() -> std::unique_ptr<Hasher::IHashImpl> {
-    return std::make_unique<HashImplSha256>();
-}