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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
d12583fc08
I'm partly doing this because the current setup would be difficult to share with the toolchain. e.g., ProtoToCarbon isn't explorer-specific, but the only way to run it via CLI is the explorer's fuzzverter. I want a separate tool.
This change:
- Adds a //common/fuzzing:proto_to_carbon tool.
- The rest of fuzzverter is now just //explorer/fuzzing:ast_to_proto.
- The change simplifies overall handling and removes a LLVM CLI dependency.
- Stops allowing unknown fields in the proto.
- This has mostly led to forgetting to remove fuzzer inputs that were for removed features.
- Moves more non-explorer-specific bits to //common/fuzzing.
- Cleans up remaining pieces in //explorer/fuzzing
- Merges the //explorer/fuzzing proto tests, which deduplicates AstToString copies.
- These tests also had duplicate dependencies, etc -- and all complete in ~6s.
- Updates and fixes regen_corpus which was previously broken by other changes.
- Updates the README to reflect changes.
- Removes obsolete proto-fuzzer build configuration (AFAICT this is no longer needed).
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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// To convert a Carbon file to a text proto:
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// `ast_to_proto <file.carbon>`
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#include <google/protobuf/text_format.h>
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#include <fstream>
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#include <iostream>
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#include <sstream>
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#include "common/bazel_working_dir.h"
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#include "common/error.h"
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#include "common/fuzzing/carbon.pb.h"
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#include "explorer/ast/ast.h"
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#include "explorer/common/arena.h"
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#include "explorer/fuzzing/ast_to_proto.h"
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#include "explorer/syntax/parse.h"
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namespace Carbon {
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auto Main(int argc, char** argv) -> ErrorOr<Success> {
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Carbon::SetWorkingDirForBazel();
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if (argc != 2) {
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return Error("Syntax: ast_to_proto <file.carbon>");
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}
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if (!std::filesystem::is_regular_file(argv[1])) {
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return Error("Argument must be a file.");
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}
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// Read the input file.
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std::ifstream proto_file(argv[1]);
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std::stringstream buffer;
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buffer << proto_file.rdbuf();
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proto_file.close();
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Arena arena;
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const ErrorOr<AST> ast = Parse(&arena, argv[1],
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/*parser_debug=*/false);
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if (!ast.ok()) {
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return ErrorBuilder() << "Parsing failed: " << ast.error().message();
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}
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Fuzzing::Carbon carbon_proto = AstToProto(*ast);
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std::string proto_string;
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google::protobuf::TextFormat::Printer p;
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if (!p.PrintToString(carbon_proto, &proto_string)) {
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return Error("Failed to convert to text proto");
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}
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std::cout << proto_string;
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return Success();
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}
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} // namespace Carbon
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auto main(int argc, char** argv) -> int {
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auto err = Carbon::Main(argc, argv);
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if (!err.ok()) {
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std::cerr << err.error().message() << "\n";
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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