JustMR: Parse computed repositories

1 files changed, 49 insertions, 0 deletions

diff --git a/src/other_tools/utils/parse_computed_root.hpp b/src/other_tools/utils/parse_computed_root.hpp
new file mode 100644
index 00000000..e23284da
--- /dev/null
+++ b/src/other_tools/utils/parse_computed_root.hpp
@@ -0,0 +1,49 @@
+// Copyright 2024 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.
+
+#ifndef INCLUDED_SRC_OTHER_TOOLS_UTILS_PARSE_COMPUTED_ROOT_HPP
+#define INCLUDED_SRC_OTHER_TOOLS_UTILS_PARSE_COMPUTED_ROOT_HPP
+
+#include <optional>
+#include <string>
+
+#include "gsl/gsl"
+#include "src/buildtool/build_engine/expression/expression_ptr.hpp"
+#include "src/buildtool/file_system/file_root.hpp"
+#include "src/utils/cpp/expected.hpp"
+
+class ComputedRootParser final {
+  public:
+    /// \brief Create a parser for computed roots
+    /// \param repository Repository to be parsed
+    /// \return Initialized parser on success, or std::nullopt if repository
+    /// isn't Map or type is not computed.
+    [[nodiscard]] static auto Create(
+        gsl::not_null<ExpressionPtr const*> const& repository) noexcept
+        -> std::optional<ComputedRootParser>;
+
+    [[nodiscard]] auto GetTargetRepository() const
+        -> expected<std::string, std::string>;
+
+    [[nodiscard]] auto GetResult() const
+        -> expected<FileRoot::ComputedRoot, std::string>;
+
+  private:
+    ExpressionPtr const& repository_;
+    explicit ComputedRootParser(
+        gsl::not_null<ExpressionPtr const*> const& repository)
+        : repository_{*repository} {}
+};
+
+#endif  // INCLUDED_SRC_OTHER_TOOLS_UTILS_PARSE_COMPUTED_ROOT_HPP