Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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50 lines
1.4 KiB
50 lines
1.4 KiB
// Protocol Buffers - Google's data interchange format |
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// Copyright 2024 Google LLC. All rights reserved. |
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// |
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// Use of this source code is governed by a BSD-style |
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// license that can be found in the LICENSE file or at |
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// https://developers.google.com/open-source/licenses/bsd |
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#ifndef GOOGLE_PROTOBUF_RUST_CPP_KERNEL_STRINGS_H__ |
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#define GOOGLE_PROTOBUF_RUST_CPP_KERNEL_STRINGS_H__ |
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#include <cstddef> |
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#include <cstring> |
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#include <string> |
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namespace google { |
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namespace protobuf { |
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namespace rust { |
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// Represents an ABI-stable version of &[u8]/string_view (borrowed slice of |
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// bytes) for FFI use only. |
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struct PtrAndLen { |
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/// Borrows the memory. |
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const char* ptr; |
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size_t len; |
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PtrAndLen(const char* ptr, size_t len) : ptr(ptr), len(len) {} |
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}; |
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// Represents an owned string for FFI purposes. |
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// |
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// This must only be used to transfer a string from C++ to Rust. The |
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// below invariants must hold: |
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// * Rust and C++ versions of this struct are ABI compatible. |
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// * The data were allocated using the Rust allocator and are 1 byte aligned. |
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// * The data is valid UTF-8. |
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struct RustStringRawParts { |
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// Owns the memory. |
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const char* data; |
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size_t len; |
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RustStringRawParts() = delete; |
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// Copies src. |
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explicit RustStringRawParts(std::string src); |
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}; |
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} // namespace rust |
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} // namespace protobuf |
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} // namespace google |
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#endif // GOOGLE_PROTOBUF_RUST_CPP_KERNEL_STRINGS_H__
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