YDB Import 588

1384556be6811c00a4098d426b8eda9be6d2a541

1 files changed, 0 insertions, 436 deletions

diff --git a/contrib/libs/clang14/lib/Tooling/JSONCompilationDatabase.cpp b/contrib/libs/clang14/lib/Tooling/JSONCompilationDatabase.cpp
deleted file mode 100644
index 5e18d7a576c..00000000000
--- a/contrib/libs/clang14/lib/Tooling/JSONCompilationDatabase.cpp
+++ /dev/null
@@ -1,436 +0,0 @@
-//===- JSONCompilationDatabase.cpp ----------------------------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-//  This file contains the implementation of the JSONCompilationDatabase.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Tooling/JSONCompilationDatabase.h"
-#include "clang/Basic/LLVM.h"
-#include "clang/Tooling/CompilationDatabase.h"
-#include "clang/Tooling/CompilationDatabasePluginRegistry.h"
-#include "clang/Tooling/Tooling.h"
-#include "llvm/ADT/Optional.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/Triple.h"
-#include "llvm/Support/Allocator.h"
-#include "llvm/Support/Casting.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/ErrorOr.h"
-#include "llvm/Support/Host.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/Path.h"
-#include "llvm/Support/StringSaver.h"
-#include "llvm/Support/VirtualFileSystem.h"
-#include "llvm/Support/YAMLParser.h"
-#include "llvm/Support/raw_ostream.h"
-#include <cassert>
-#include <memory>
-#include <string>
-#include <system_error>
-#include <tuple>
-#include <utility>
-#include <vector>
-
-using namespace clang;
-using namespace tooling;
-
-namespace {
-
-/// A parser for escaped strings of command line arguments.
-///
-/// Assumes \-escaping for quoted arguments (see the documentation of
-/// unescapeCommandLine(...)).
-class CommandLineArgumentParser {
- public:
-  CommandLineArgumentParser(StringRef CommandLine)
-      : Input(CommandLine), Position(Input.begin()-1) {}
-
-  std::vector<std::string> parse() {
-    bool HasMoreInput = true;
-    while (HasMoreInput && nextNonWhitespace()) {
-      std::string Argument;
-      HasMoreInput = parseStringInto(Argument);
-      CommandLine.push_back(Argument);
-    }
-    return CommandLine;
-  }
-
- private:
-  // All private methods return true if there is more input available.
-
-  bool parseStringInto(std::string &String) {
-    do {
-      if (*Position == '"') {
-        if (!parseDoubleQuotedStringInto(String)) return false;
-      } else if (*Position == '\'') {
-        if (!parseSingleQuotedStringInto(String)) return false;
-      } else {
-        if (!parseFreeStringInto(String)) return false;
-      }
-    } while (*Position != ' ');
-    return true;
-  }
-
-  bool parseDoubleQuotedStringInto(std::string &String) {
-    if (!next()) return false;
-    while (*Position != '"') {
-      if (!skipEscapeCharacter()) return false;
-      String.push_back(*Position);
-      if (!next()) return false;
-    }
-    return next();
-  }
-
-  bool parseSingleQuotedStringInto(std::string &String) {
-    if (!next()) return false;
-    while (*Position != '\'') {
-      String.push_back(*Position);
-      if (!next()) return false;
-    }
-    return next();
-  }
-
-  bool parseFreeStringInto(std::string &String) {
-    do {
-      if (!skipEscapeCharacter()) return false;
-      String.push_back(*Position);
-      if (!next()) return false;
-    } while (*Position != ' ' && *Position != '"' && *Position != '\'');
-    return true;
-  }
-
-  bool skipEscapeCharacter() {
-    if (*Position == '\\') {
-      return next();
-    }
-    return true;
-  }
-
-  bool nextNonWhitespace() {
-    do {
-      if (!next()) return false;
-    } while (*Position == ' ');
-    return true;
-  }
-
-  bool next() {
-    ++Position;
-    return Position != Input.end();
-  }
-
-  const StringRef Input;
-  StringRef::iterator Position;
-  std::vector<std::string> CommandLine;
-};
-
-std::vector<std::string> unescapeCommandLine(JSONCommandLineSyntax Syntax,
-                                             StringRef EscapedCommandLine) {
-  if (Syntax == JSONCommandLineSyntax::AutoDetect) {
-#ifdef _WIN32
-    // Assume Windows command line parsing on Win32
-    Syntax = JSONCommandLineSyntax::Windows;
-#else
-    Syntax = JSONCommandLineSyntax::Gnu;
-#endif
-  }
-
-  if (Syntax == JSONCommandLineSyntax::Windows) {
-    llvm::BumpPtrAllocator Alloc;
-    llvm::StringSaver Saver(Alloc);
-    llvm::SmallVector<const char *, 64> T;
-    llvm::cl::TokenizeWindowsCommandLine(EscapedCommandLine, Saver, T);
-    std::vector<std::string> Result(T.begin(), T.end());
-    return Result;
-  }
-  assert(Syntax == JSONCommandLineSyntax::Gnu);
-  CommandLineArgumentParser parser(EscapedCommandLine);
-  return parser.parse();
-}
-
-// This plugin locates a nearby compile_command.json file, and also infers
-// compile commands for files not present in the database.
-class JSONCompilationDatabasePlugin : public CompilationDatabasePlugin {
-  std::unique_ptr<CompilationDatabase>
-  loadFromDirectory(StringRef Directory, std::string &ErrorMessage) override {
-    SmallString<1024> JSONDatabasePath(Directory);
-    llvm::sys::path::append(JSONDatabasePath, "compile_commands.json");
-    auto Base = JSONCompilationDatabase::loadFromFile(
-        JSONDatabasePath, ErrorMessage, JSONCommandLineSyntax::AutoDetect);
-    return Base ? inferTargetAndDriverMode(
-                      inferMissingCompileCommands(expandResponseFiles(
-                          std::move(Base), llvm::vfs::getRealFileSystem())))
-                : nullptr;
-  }
-};
-
-} // namespace
-
-// Register the JSONCompilationDatabasePlugin with the
-// CompilationDatabasePluginRegistry using this statically initialized variable.
-static CompilationDatabasePluginRegistry::Add<JSONCompilationDatabasePlugin>
-X("json-compilation-database", "Reads JSON formatted compilation databases");
-
-namespace clang {
-namespace tooling {
-
-// This anchor is used to force the linker to link in the generated object file
-// and thus register the JSONCompilationDatabasePlugin.
-volatile int JSONAnchorSource = 0;
-
-} // namespace tooling
-} // namespace clang
-
-std::unique_ptr<JSONCompilationDatabase>
-JSONCompilationDatabase::loadFromFile(StringRef FilePath,
-                                      std::string &ErrorMessage,
-                                      JSONCommandLineSyntax Syntax) {
-  // Don't mmap: if we're a long-lived process, the build system may overwrite.
-  llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> DatabaseBuffer =
-      llvm::MemoryBuffer::getFile(FilePath, /*IsText=*/false,
-                                  /*RequiresNullTerminator=*/true,
-                                  /*IsVolatile=*/true);
-  if (std::error_code Result = DatabaseBuffer.getError()) {
-    ErrorMessage = "Error while opening JSON database: " + Result.message();
-    return nullptr;
-  }
-  std::unique_ptr<JSONCompilationDatabase> Database(
-      new JSONCompilationDatabase(std::move(*DatabaseBuffer), Syntax));
-  if (!Database->parse(ErrorMessage))
-    return nullptr;
-  return Database;
-}
-
-std::unique_ptr<JSONCompilationDatabase>
-JSONCompilationDatabase::loadFromBuffer(StringRef DatabaseString,
-                                        std::string &ErrorMessage,
-                                        JSONCommandLineSyntax Syntax) {
-  std::unique_ptr<llvm::MemoryBuffer> DatabaseBuffer(
-      llvm::MemoryBuffer::getMemBufferCopy(DatabaseString));
-  std::unique_ptr<JSONCompilationDatabase> Database(
-      new JSONCompilationDatabase(std::move(DatabaseBuffer), Syntax));
-  if (!Database->parse(ErrorMessage))
-    return nullptr;
-  return Database;
-}
-
-std::vector<CompileCommand>
-JSONCompilationDatabase::getCompileCommands(StringRef FilePath) const {
-  SmallString<128> NativeFilePath;
-  llvm::sys::path::native(FilePath, NativeFilePath);
-
-  std::string Error;
-  llvm::raw_string_ostream ES(Error);
-  StringRef Match = MatchTrie.findEquivalent(NativeFilePath, ES);
-  if (Match.empty())
-    return {};
-  const auto CommandsRefI = IndexByFile.find(Match);
-  if (CommandsRefI == IndexByFile.end())
-    return {};
-  std::vector<CompileCommand> Commands;
-  getCommands(CommandsRefI->getValue(), Commands);
-  return Commands;
-}
-
-std::vector<std::string>
-JSONCompilationDatabase::getAllFiles() const {
-  std::vector<std::string> Result;
-  for (const auto &CommandRef : IndexByFile)
-    Result.push_back(CommandRef.first().str());
-  return Result;
-}
-
-std::vector<CompileCommand>
-JSONCompilationDatabase::getAllCompileCommands() const {
-  std::vector<CompileCommand> Commands;
-  getCommands(AllCommands, Commands);
-  return Commands;
-}
-
-static llvm::StringRef stripExecutableExtension(llvm::StringRef Name) {
-  Name.consume_back(".exe");
-  return Name;
-}
-
-// There are compiler-wrappers (ccache, distcc, gomacc) that take the "real"
-// compiler as an argument, e.g. distcc gcc -O3 foo.c.
-// These end up in compile_commands.json when people set CC="distcc gcc".
-// Clang's driver doesn't understand this, so we need to unwrap.
-static bool unwrapCommand(std::vector<std::string> &Args) {
-  if (Args.size() < 2)
-    return false;
-  StringRef Wrapper =
-      stripExecutableExtension(llvm::sys::path::filename(Args.front()));
-  if (Wrapper == "distcc" || Wrapper == "gomacc" || Wrapper == "ccache" ||
-      Wrapper == "sccache") {
-    // Most of these wrappers support being invoked 3 ways:
-    // `distcc g++ file.c` This is the mode we're trying to match.
-    //                     We need to drop `distcc`.
-    // `distcc file.c`     This acts like compiler is cc or similar.
-    //                     Clang's driver can handle this, no change needed.
-    // `g++ file.c`        g++ is a symlink to distcc.
-    //                     We don't even notice this case, and all is well.
-    //
-    // We need to distinguish between the first and second case.
-    // The wrappers themselves don't take flags, so Args[1] is a compiler flag,
-    // an input file, or a compiler. Inputs have extensions, compilers don't.
-    bool HasCompiler =
-        (Args[1][0] != '-') &&
-        !llvm::sys::path::has_extension(stripExecutableExtension(Args[1]));
-    if (HasCompiler) {
-      Args.erase(Args.begin());
-      return true;
-    }
-    // If !HasCompiler, wrappers act like GCC. Fine: so do we.
-  }
-  return false;
-}
-
-static std::vector<std::string>
-nodeToCommandLine(JSONCommandLineSyntax Syntax,
-                  const std::vector<llvm::yaml::ScalarNode *> &Nodes) {
-  SmallString<1024> Storage;
-  std::vector<std::string> Arguments;
-  if (Nodes.size() == 1)
-    Arguments = unescapeCommandLine(Syntax, Nodes[0]->getValue(Storage));
-  else
-    for (const auto *Node : Nodes)
-      Arguments.push_back(std::string(Node->getValue(Storage)));
-  // There may be multiple wrappers: using distcc and ccache together is common.
-  while (unwrapCommand(Arguments))
-    ;
-  return Arguments;
-}
-
-void JSONCompilationDatabase::getCommands(
-    ArrayRef<CompileCommandRef> CommandsRef,
-    std::vector<CompileCommand> &Commands) const {
-  for (const auto &CommandRef : CommandsRef) {
-    SmallString<8> DirectoryStorage;
-    SmallString<32> FilenameStorage;
-    SmallString<32> OutputStorage;
-    auto Output = std::get<3>(CommandRef);
-    Commands.emplace_back(
-        std::get<0>(CommandRef)->getValue(DirectoryStorage),
-        std::get<1>(CommandRef)->getValue(FilenameStorage),
-        nodeToCommandLine(Syntax, std::get<2>(CommandRef)),
-        Output ? Output->getValue(OutputStorage) : "");
-  }
-}
-
-bool JSONCompilationDatabase::parse(std::string &ErrorMessage) {
-  llvm::yaml::document_iterator I = YAMLStream.begin();
-  if (I == YAMLStream.end()) {
-    ErrorMessage = "Error while parsing YAML.";
-    return false;
-  }
-  llvm::yaml::Node *Root = I->getRoot();
-  if (!Root) {
-    ErrorMessage = "Error while parsing YAML.";
-    return false;
-  }
-  auto *Array = dyn_cast<llvm::yaml::SequenceNode>(Root);
-  if (!Array) {
-    ErrorMessage = "Expected array.";
-    return false;
-  }
-  for (auto &NextObject : *Array) {
-    auto *Object = dyn_cast<llvm::yaml::MappingNode>(&NextObject);
-    if (!Object) {
-      ErrorMessage = "Expected object.";
-      return false;
-    }
-    llvm::yaml::ScalarNode *Directory = nullptr;
-    llvm::Optional<std::vector<llvm::yaml::ScalarNode *>> Command;
-    llvm::yaml::ScalarNode *File = nullptr;
-    llvm::yaml::ScalarNode *Output = nullptr;
-    for (auto& NextKeyValue : *Object) {
-      auto *KeyString = dyn_cast<llvm::yaml::ScalarNode>(NextKeyValue.getKey());
-      if (!KeyString) {
-        ErrorMessage = "Expected strings as key.";
-        return false;
-      }
-      SmallString<10> KeyStorage;
-      StringRef KeyValue = KeyString->getValue(KeyStorage);
-      llvm::yaml::Node *Value = NextKeyValue.getValue();
-      if (!Value) {
-        ErrorMessage = "Expected value.";
-        return false;
-      }
-      auto *ValueString = dyn_cast<llvm::yaml::ScalarNode>(Value);
-      auto *SequenceString = dyn_cast<llvm::yaml::SequenceNode>(Value);
-      if (KeyValue == "arguments") {
-        if (!SequenceString) {
-          ErrorMessage = "Expected sequence as value.";
-          return false;
-        }
-        Command = std::vector<llvm::yaml::ScalarNode *>();
-        for (auto &Argument : *SequenceString) {
-          auto *Scalar = dyn_cast<llvm::yaml::ScalarNode>(&Argument);
-          if (!Scalar) {
-            ErrorMessage = "Only strings are allowed in 'arguments'.";
-            return false;
-          }
-          Command->push_back(Scalar);
-        }
-      } else {
-        if (!ValueString) {
-          ErrorMessage = "Expected string as value.";
-          return false;
-        }
-        if (KeyValue == "directory") {
-          Directory = ValueString;
-        } else if (KeyValue == "command") {
-          if (!Command)
-            Command = std::vector<llvm::yaml::ScalarNode *>(1, ValueString);
-        } else if (KeyValue == "file") {
-          File = ValueString;
-        } else if (KeyValue == "output") {
-          Output = ValueString;
-        } else {
-          ErrorMessage =
-              ("Unknown key: \"" + KeyString->getRawValue() + "\"").str();
-          return false;
-        }
-      }
-    }
-    if (!File) {
-      ErrorMessage = "Missing key: \"file\".";
-      return false;
-    }
-    if (!Command) {
-      ErrorMessage = "Missing key: \"command\" or \"arguments\".";
-      return false;
-    }
-    if (!Directory) {
-      ErrorMessage = "Missing key: \"directory\".";
-      return false;
-    }
-    SmallString<8> FileStorage;
-    StringRef FileName = File->getValue(FileStorage);
-    SmallString<128> NativeFilePath;
-    if (llvm::sys::path::is_relative(FileName)) {
-      SmallString<8> DirectoryStorage;
-      SmallString<128> AbsolutePath(
-          Directory->getValue(DirectoryStorage));
-      llvm::sys::path::append(AbsolutePath, FileName);
-      llvm::sys::path::remove_dots(AbsolutePath, /*remove_dot_dot=*/ true);
-      llvm::sys::path::native(AbsolutePath, NativeFilePath);
-    } else {
-      llvm::sys::path::native(FileName, NativeFilePath);
-    }
-    auto Cmd = CompileCommandRef(Directory, File, *Command, Output);
-    IndexByFile[NativeFilePath].push_back(Cmd);
-    AllCommands.push_back(Cmd);
-    MatchTrie.insert(NativeFilePath);
-  }
-  return true;
-}