83 lines
2.0 KiB
C++
83 lines
2.0 KiB
C++
/*
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* Copyright 2015 - 2025 gary@drinkingtea.net
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#include <ox/std/span.hpp>
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#include <ox/mc/read.hpp>
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#ifdef OX_USE_STDLIB
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#include <ox/oc/read.hpp>
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#endif
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#include <ox/std/buffer.hpp>
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#include <ox/std/string.hpp>
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#include "format.hpp"
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namespace ox {
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constexpr auto Error_ClawTypeMismatch = 200;
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constexpr auto Error_ClawTypeVersionMismatch = 201;
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struct ClawHeader {
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String typeName;
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int typeVersion = -1;
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TypeParamPack typeParams;
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ClawFormat fmt = ClawFormat::None;
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const char *data = nullptr;
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std::size_t dataSize = 0;
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};
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ox::Result<ox::StringView> readClawTypeId(ox::BufferView buff) noexcept;
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Result<ClawHeader> readClawHeader(ox::BufferView buff) noexcept;
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Result<BufferView> stripClawHeader(ox::BufferView buff) noexcept;
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template<typename T>
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Error readClaw(ox::BufferView buff, T &val) {
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OX_REQUIRE(header, readClawHeader(buff));
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if (header.typeName != getModelTypeName<T>()) {
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return ox::Error(Error_ClawTypeMismatch, "Claw Read: Type mismatch");
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}
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if (header.typeVersion != getModelTypeVersion<T>()) {
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return ox::Error(Error_ClawTypeVersionMismatch, "Claw Read: Type Version mismatch");
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}
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switch (header.fmt) {
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case ClawFormat::Metal:
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{
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ox::BufferReader br({header.data, header.dataSize});
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MetalClawReader reader(br);
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ModelHandlerInterface handler(&reader);
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return model(&handler, &val);
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}
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case ClawFormat::Organic:
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{
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#ifdef OX_USE_STDLIB
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OrganicClawReader reader(header.data, header.dataSize);
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return model(&reader, &val);
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#else
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break;
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#endif
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}
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case ClawFormat::None:
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return ox::Error(1);
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}
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return ox::Error(1);
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}
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template<typename T>
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Result<T> readClaw(ox::BufferView buff) {
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Result<T> val;
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OX_RETURN_ERROR(readClaw(buff, val.value));
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return val;
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}
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Result<ModelObject> readClaw(TypeStore &ts, BufferView buff) noexcept;
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}
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