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// 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.
#ifndef INCLUDED_SRC_BUILDTOOL_BUILD_ENGINE_EXPRESSION_EXPRESSION_PTR_HPP
#define INCLUDED_SRC_BUILDTOOL_BUILD_ENGINE_EXPRESSION_EXPRESSION_PTR_HPP
#include <cstddef>
#include <functional>
#include <memory>
#include <string>
#include <type_traits>
#include "nlohmann/json.hpp"
#include "src/buildtool/build_engine/expression/function_map.hpp"
#include "src/buildtool/build_engine/expression/linked_map.hpp"
#include "src/buildtool/logging/log_level.hpp"
#include "src/buildtool/logging/logger.hpp"
class Configuration;
class Expression;
class ExpressionPtr {
public:
// Initialize to nullptr
explicit ExpressionPtr(std::nullptr_t /*ptr*/) noexcept : ptr_{nullptr} {}
// Initialize from Expression's variant type or Expression
template <class T>
requires(not std::is_same_v<std::remove_cvref_t<T>, ExpressionPtr>)
// NOLINTNEXTLINE(bugprone-forwarding-reference-overload)
explicit ExpressionPtr(T&& data) noexcept
: ptr_{std::make_shared<Expression>(std::forward<T>(data))} {}
ExpressionPtr() noexcept;
ExpressionPtr(ExpressionPtr const&) noexcept = default;
ExpressionPtr(ExpressionPtr&&) noexcept = default;
~ExpressionPtr() noexcept = default;
auto operator=(ExpressionPtr const&) noexcept -> ExpressionPtr& = default;
auto operator=(ExpressionPtr&&) noexcept -> ExpressionPtr& = default;
explicit operator bool() const { return static_cast<bool>(ptr_); }
[[nodiscard]] auto operator*() & -> Expression& { return *ptr_; }
[[nodiscard]] auto operator*() const& -> Expression const& { return *ptr_; }
[[nodiscard]] auto operator*() && -> Expression = delete;
[[nodiscard]] auto operator->() const& -> Expression const* {
return ptr_.get();
}
[[nodiscard]] auto operator->() && -> Expression const* = delete;
[[nodiscard]] auto operator[](
std::string const& key) const& -> ExpressionPtr const&;
[[nodiscard]] auto operator[](std::string const& key) && -> ExpressionPtr;
[[nodiscard]] auto operator[](
ExpressionPtr const& key) const& -> ExpressionPtr const&;
[[nodiscard]] auto operator[](ExpressionPtr const& key) && -> ExpressionPtr;
[[nodiscard]] auto operator[](
std::size_t pos) const& -> ExpressionPtr const&;
[[nodiscard]] auto operator[](std::size_t pos) && -> ExpressionPtr;
[[nodiscard]] auto operator<(ExpressionPtr const& other) const -> bool;
[[nodiscard]] auto operator==(ExpressionPtr const& other) const -> bool;
template <class T>
[[nodiscard]] auto operator==(T const& other) const -> bool {
return ptr_ and *ptr_ == other;
}
template <class T>
[[nodiscard]] auto operator!=(T const& other) const -> bool {
return not(*this == other);
}
[[nodiscard]] auto Evaluate(
Configuration const& env,
FunctionMapPtr const& functions,
std::function<void(std::string const&)> const& logger =
[](std::string const& error) noexcept -> void {
Logger::Log(LogLevel::Error, error);
},
std::function<std::string(ExpressionPtr)> const& annotate_object =
[](auto const& /*unused*/) { return std::string{}; },
std::function<void(void)> const& note_user_context =
[]() noexcept -> void {}) const noexcept -> ExpressionPtr;
[[nodiscard]] auto IsCacheable() const noexcept -> bool;
[[nodiscard]] auto ToIdentifier() const noexcept -> std::string;
[[nodiscard]] auto ToJson() const -> nlohmann::json;
using linked_map_t = LinkedMap<std::string, ExpressionPtr, ExpressionPtr>;
[[nodiscard]] auto IsNotNull() const noexcept -> bool;
[[nodiscard]] auto Map() const& -> linked_map_t const&;
[[nodiscard]] static auto Make(linked_map_t&& map) -> ExpressionPtr;
private:
std::shared_ptr<Expression> ptr_;
};
namespace std {
template <>
struct hash<ExpressionPtr> {
[[nodiscard]] auto operator()(ExpressionPtr const& p) const noexcept
-> std::size_t;
};
} // namespace std
#endif // INCLUDED_SRC_BUILDTOOL_BUILD_ENGINE_EXPRESSION_EXPRESSION_PTR_HPP
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