1 files changed, 0 insertions, 296 deletions
diff --git a/clang/lib/Frontend/SerializedDiagnosticReader.cpp b/clang/lib/Frontend/SerializedDiagnosticReader.cpp
deleted file mode 100644
index 6d692e4059e..00000000000
--- a/clang/lib/Frontend/SerializedDiagnosticReader.cpp
+++ /dev/null
@@ -1,296 +0,0 @@
-//===--- SerializedDiagnosticReader.cpp - Reads diagnostics ---------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Frontend/SerializedDiagnosticReader.h"
-#include "clang/Frontend/SerializedDiagnostics.h"
-#include "clang/Basic/FileManager.h"
-#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/MemoryBuffer.h"
-
-using namespace clang;
-using namespace clang::serialized_diags;
-
-std::error_code SerializedDiagnosticReader::readDiagnostics(StringRef File) {
-  // Open the diagnostics file.
-  FileSystemOptions FO;
-  FileManager FileMgr(FO);
-
-  std::unique_ptr<llvm::MemoryBuffer> Buffer = FileMgr.getBufferForFile(File);
-  if (!Buffer)
-    return SDError::CouldNotLoad;
-
-  llvm::BitstreamReader StreamFile;
-  StreamFile.init((const unsigned char *)Buffer->getBufferStart(),
-                  (const unsigned char *)Buffer->getBufferEnd());
-
-  llvm::BitstreamCursor Stream;
-  Stream.init(StreamFile);
-
-  // Sniff for the signature.
-  if (Stream.Read(8) != 'D' ||
-      Stream.Read(8) != 'I' ||
-      Stream.Read(8) != 'A' ||
-      Stream.Read(8) != 'G')
-    return SDError::InvalidSignature;
-
-  // Read the top level blocks.
-  while (!Stream.AtEndOfStream()) {
-    if (Stream.ReadCode() != llvm::bitc::ENTER_SUBBLOCK)
-      return SDError::InvalidDiagnostics;
-
-    std::error_code EC;
-    switch (Stream.ReadSubBlockID()) {
-    case llvm::bitc::BLOCKINFO_BLOCK_ID:
-      if (Stream.ReadBlockInfoBlock())
-        return SDError::MalformedBlockInfoBlock;
-      continue;
-    case BLOCK_META:
-      if ((EC = readMetaBlock(Stream)))
-        return EC;
-      continue;
-    case BLOCK_DIAG:
-      if ((EC = readDiagnosticBlock(Stream)))
-        return EC;
-      continue;
-    default:
-      if (!Stream.SkipBlock())
-        return SDError::MalformedTopLevelBlock;
-      continue;
-    }
-  }
-  return std::error_code();
-}
-
-enum class SerializedDiagnosticReader::Cursor {
-  Record = 1,
-  BlockEnd,
-  BlockBegin
-};
-
-llvm::ErrorOr<SerializedDiagnosticReader::Cursor>
-SerializedDiagnosticReader::skipUntilRecordOrBlock(
-    llvm::BitstreamCursor &Stream, unsigned &BlockOrRecordID) {
-  BlockOrRecordID = 0;
-
-  while (!Stream.AtEndOfStream()) {
-    unsigned Code = Stream.ReadCode();
-
-    switch ((llvm::bitc::FixedAbbrevIDs)Code) {
-    case llvm::bitc::ENTER_SUBBLOCK:
-      BlockOrRecordID = Stream.ReadSubBlockID();
-      return Cursor::BlockBegin;
-
-    case llvm::bitc::END_BLOCK:
-      if (Stream.ReadBlockEnd())
-        return SDError::InvalidDiagnostics;
-      return Cursor::BlockEnd;
-
-    case llvm::bitc::DEFINE_ABBREV:
-      Stream.ReadAbbrevRecord();
-      continue;
-
-    case llvm::bitc::UNABBREV_RECORD:
-      return SDError::UnsupportedConstruct;
-
-    default:
-      // We found a record.
-      BlockOrRecordID = Code;
-      return Cursor::Record;
-    }
-  }
-
-  return SDError::InvalidDiagnostics;
-}
-
-std::error_code
-SerializedDiagnosticReader::readMetaBlock(llvm::BitstreamCursor &Stream) {
-  if (Stream.EnterSubBlock(clang::serialized_diags::BLOCK_META))
-    return SDError::MalformedMetadataBlock;
-
-  bool VersionChecked = false;
-
-  while (true) {
-    unsigned BlockOrCode = 0;
-    llvm::ErrorOr<Cursor> Res = skipUntilRecordOrBlock(Stream, BlockOrCode);
-    if (!Res)
-      Res.getError();
-
-    switch (Res.get()) {
-    case Cursor::Record:
-      break;
-    case Cursor::BlockBegin:
-      if (Stream.SkipBlock())
-        return SDError::MalformedMetadataBlock;
-    case Cursor::BlockEnd:
-      if (!VersionChecked)
-        return SDError::MissingVersion;
-      return std::error_code();
-    }
-
-    SmallVector<uint64_t, 1> Record;
-    unsigned RecordID = Stream.readRecord(BlockOrCode, Record);
-
-    if (RecordID == RECORD_VERSION) {
-      if (Record.size() < 1)
-        return SDError::MissingVersion;
-      if (Record[0] > VersionNumber)
-        return SDError::VersionMismatch;
-      VersionChecked = true;
-    }
-  }
-}
-
-std::error_code
-SerializedDiagnosticReader::readDiagnosticBlock(llvm::BitstreamCursor &Stream) {
-  if (Stream.EnterSubBlock(clang::serialized_diags::BLOCK_DIAG))
-    return SDError::MalformedDiagnosticBlock;
-
-  std::error_code EC;
-  if ((EC = visitStartOfDiagnostic()))
-    return EC;
-
-  SmallVector<uint64_t, 16> Record;
-  while (true) {
-    unsigned BlockOrCode = 0;
-    llvm::ErrorOr<Cursor> Res = skipUntilRecordOrBlock(Stream, BlockOrCode);
-    if (!Res)
-      Res.getError();
-
-    switch (Res.get()) {
-    case Cursor::BlockBegin:
-      // The only blocks we care about are subdiagnostics.
-      if (BlockOrCode == serialized_diags::BLOCK_DIAG) {
-        if ((EC = readDiagnosticBlock(Stream)))
-          return EC;
-      } else if (!Stream.SkipBlock())
-        return SDError::MalformedSubBlock;
-      continue;
-    case Cursor::BlockEnd:
-      if ((EC = visitEndOfDiagnostic()))
-        return EC;
-      return std::error_code();
-    case Cursor::Record:
-      break;
-    }
-
-    // Read the record.
-    Record.clear();
-    StringRef Blob;
-    unsigned RecID = Stream.readRecord(BlockOrCode, Record, &Blob);
-
-    if (RecID < serialized_diags::RECORD_FIRST ||
-        RecID > serialized_diags::RECORD_LAST)
-      continue;
-
-    switch ((RecordIDs)RecID) {
-    case RECORD_CATEGORY:
-      // A category has ID and name size.
-      if (Record.size() != 2)
-        return SDError::MalformedDiagnosticRecord;
-      if ((EC = visitCategoryRecord(Record[0], Blob)))
-        return EC;
-      continue;
-    case RECORD_DIAG:
-      // A diagnostic has severity, location (4), category, flag, and message
-      // size.
-      if (Record.size() != 8)
-        return SDError::MalformedDiagnosticRecord;
-      if ((EC = visitDiagnosticRecord(
-               Record[0], Location(Record[1], Record[2], Record[3], Record[4]),
-               Record[5], Record[6], Blob)))
-        return EC;
-      continue;
-    case RECORD_DIAG_FLAG:
-      // A diagnostic flag has ID and name size.
-      if (Record.size() != 2)
-        return SDError::MalformedDiagnosticRecord;
-      if ((EC = visitDiagFlagRecord(Record[0], Blob)))
-        return EC;
-      continue;
-    case RECORD_FILENAME:
-      // A filename has ID, size, timestamp, and name size. The size and
-      // timestamp are legacy fields that are always zero these days.
-      if (Record.size() != 4)
-        return SDError::MalformedDiagnosticRecord;
-      if ((EC = visitFilenameRecord(Record[0], Record[1], Record[2], Blob)))
-        return EC;
-      continue;
-    case RECORD_FIXIT:
-      // A fixit has two locations (4 each) and message size.
-      if (Record.size() != 9)
-        return SDError::MalformedDiagnosticRecord;
-      if ((EC = visitFixitRecord(
-               Location(Record[0], Record[1], Record[2], Record[3]),
-               Location(Record[4], Record[5], Record[6], Record[7]), Blob)))
-        return EC;
-      continue;
-    case RECORD_SOURCE_RANGE:
-      // A source range is two locations (4 each).
-      if (Record.size() != 8)
-        return SDError::MalformedDiagnosticRecord;
-      if ((EC = visitSourceRangeRecord(
-               Location(Record[0], Record[1], Record[2], Record[3]),
-               Location(Record[4], Record[5], Record[6], Record[7]))))
-        return EC;
-      continue;
-    case RECORD_VERSION:
-      // A version is just a number.
-      if (Record.size() != 1)
-        return SDError::MalformedDiagnosticRecord;
-      if ((EC = visitVersionRecord(Record[0])))
-        return EC;
-      continue;
-    }
-  }
-}
-
-namespace {
-class SDErrorCategoryType final : public std::error_category {
-  const char *name() const LLVM_NOEXCEPT override {
-    return "clang.serialized_diags";
-  }
-  std::string message(int IE) const override {
-    SDError E = static_cast<SDError>(IE);
-    switch (E) {
-    case SDError::CouldNotLoad:
-      return "Failed to open diagnostics file";
-    case SDError::InvalidSignature:
-      return "Invalid diagnostics signature";
-    case SDError::InvalidDiagnostics:
-      return "Parse error reading diagnostics";
-    case SDError::MalformedTopLevelBlock:
-      return "Malformed block at top-level of diagnostics";
-    case SDError::MalformedSubBlock:
-      return "Malformed sub-block in a diagnostic";
-    case SDError::MalformedBlockInfoBlock:
-      return "Malformed BlockInfo block";
-    case SDError::MalformedMetadataBlock:
-      return "Malformed Metadata block";
-    case SDError::MalformedDiagnosticBlock:
-      return "Malformed Diagnostic block";
-    case SDError::MalformedDiagnosticRecord:
-      return "Malformed Diagnostic record";
-    case SDError::MissingVersion:
-      return "No version provided in diagnostics";
-    case SDError::VersionMismatch:
-      return "Unsupported diagnostics version";
-    case SDError::UnsupportedConstruct:
-      return "Bitcode constructs that are not supported in diagnostics appear";
-    case SDError::HandlerFailed:
-      return "Generic error occurred while handling a record";
-    }
-    llvm_unreachable("Unknown error type!");
-  }
-};
-}
-
-static llvm::ManagedStatic<SDErrorCategoryType> ErrorCategory;
-const std::error_category &clang::serialized_diags::SDErrorCategory() {
-  return *ErrorCategory;
-}