llvm-project

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//===-- ClangdFuzzer.cpp - Fuzz clangd ------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// This file implements a function that runs clangd on a single input.
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/// This function is then linked into the Fuzzer library.
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///
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//===----------------------------------------------------------------------===//
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#include "ClangdLSPServer.h"
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#include "ClangdServer.h"
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#include "support/ThreadsafeFS.h"
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#include <cstdio>
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using namespace clang::clangd;
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extern "C" int LLVMFuzzerTestOneInput(uint8_t *Data, size_t Size) {
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  if (Size == 0)
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    return 0;
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  // fmemopen isn't portable, but I think we only run the fuzzer on Linux.
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  std::FILE *In = fmemopen(Data, Size, "r");
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  auto Transport = newJSONTransport(In, llvm::nulls(),
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                                    /*InMirror=*/nullptr, /*Pretty=*/false,
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                                    /*Style=*/JSONStreamStyle::Delimited);
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  RealThreadsafeFS FS;
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  CodeCompleteOptions CCOpts;
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  ClangdLSPServer::Options Opts;
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  Opts.CodeComplete.EnableSnippets = false;
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  Opts.UseDirBasedCDB = false;
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  // Initialize and run ClangdLSPServer.
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  ClangdLSPServer LSPServer(*Transport, FS, Opts);
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  LSPServer.run();
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  return 0;
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}
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