97 lines
3.5 KiB
C++
97 lines
3.5 KiB
C++
// Protocol Buffers - Google's data interchange format
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// Copyright 2023 Google LLC. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google LLC. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "google/protobuf/compiler/rust/context.h"
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#include <string>
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#include <utility>
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#include <vector>
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#include "absl/algorithm/container.h"
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#include "absl/status/status.h"
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#include "absl/status/statusor.h"
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#include "absl/strings/string_view.h"
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#include "absl/strings/substitute.h"
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#include "google/protobuf/compiler/code_generator.h"
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namespace google {
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namespace protobuf {
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namespace compiler {
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namespace rust {
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static constexpr std::pair<absl::string_view, absl::string_view> kMagicValue = {
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"experimental-codegen",
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"enabled",
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};
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absl::StatusOr<Options> Options::Parse(absl::string_view param) {
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std::vector<std::pair<std::string, std::string>> args;
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ParseGeneratorParameter(param, &args);
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bool has_experimental_value = absl::c_any_of(
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args, [](std::pair<absl::string_view, absl::string_view> pair) {
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return pair == kMagicValue;
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});
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if (!has_experimental_value) {
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return absl::InvalidArgumentError(
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"The Rust codegen is highly experimental. Future versions will break "
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"existing code. Use at your own risk. You can opt-in by passing "
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"'experimental-codegen=enabled' to '--rust_out'.");
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}
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Options opts;
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auto kernel_arg =
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absl::c_find_if(args, [](auto& arg) { return arg.first == "kernel"; });
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if (kernel_arg == args.end()) {
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return absl::InvalidArgumentError(
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"Mandatory option `kernel` missing, please specify `cpp` or "
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"`upb`.");
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}
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if (kernel_arg->second == "upb") {
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opts.kernel = Kernel::kUpb;
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} else if (kernel_arg->second == "cpp") {
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opts.kernel = Kernel::kCpp;
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} else {
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return absl::InvalidArgumentError(
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absl::Substitute("Unknown kernel `$0`, please specify `cpp` or "
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"`upb`.",
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kernel_arg->second));
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}
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return opts;
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}
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} // namespace rust
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} // namespace compiler
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} // namespace protobuf
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} // namespace google
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