Revert "[clang-doc] Updating BitcodeReader to use llvm::Error"

This reverts commit r339617 for breaking bots.

llvm-svn: 339620

1 files changed, 8 insertions, 10 deletions

diff --git a/clang-tools-extra/clang-doc/BitcodeReader.h b/clang-tools-extra/clang-doc/BitcodeReader.h
index ec3f6b0fd0e..aaf25257c85 100644
--- a/clang-tools-extra/clang-doc/BitcodeReader.h
+++ b/clang-tools-extra/clang-doc/BitcodeReader.h
@@ -22,7 +22,6 @@
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/Bitcode/BitstreamReader.h"
-#include "llvm/Support/Error.h"
 
 namespace clang {
 namespace doc {
@@ -39,31 +38,30 @@ private:
   enum class Cursor { BadBlock = 1, Record, BlockEnd, BlockBegin };
 
   // Top level parsing
-  llvm::Error validateStream();
-  llvm::Error readVersion();
-  llvm::Error readBlockInfoBlock();
+  bool validateStream();
+  bool readVersion();
+  bool readBlockInfoBlock();
 
   // Read a block of records into a single Info struct, calls readRecord on each
   // record found.
-  template <typename T> llvm::Error readBlock(unsigned ID, T I);
+  template <typename T> bool readBlock(unsigned ID, T I);
 
   // Step through a block of records to find the next data field.
-  template <typename T> llvm::Error readSubBlock(unsigned ID, T I);
+  template <typename T> bool readSubBlock(unsigned ID, T I);
 
   // Read record data into the given Info data field, calling the appropriate
   // parseRecord functions to parse and store the data.
-  template <typename T> llvm::Error readRecord(unsigned ID, T I);
+  template <typename T> bool readRecord(unsigned ID, T I);
 
   // Allocate the relevant type of info and add read data to the object.
-  template <typename T>
-  llvm::Expected<std::unique_ptr<Info>> createInfo(unsigned ID);
+  template <typename T> std::unique_ptr<Info> createInfo(unsigned ID);
 
   // Helper function to step through blocks to find and dispatch the next record
   // or block to be read.
   Cursor skipUntilRecordOrBlock(unsigned &BlockOrRecordID);
 
   // Helper function to set up the approriate type of Info.
-  llvm::Expected<std::unique_ptr<Info>> readBlockToInfo(unsigned ID);
+  std::unique_ptr<Info> readBlockToInfo(unsigned ID);
 
   llvm::BitstreamCursor &Stream;
   Optional<llvm::BitstreamBlockInfo> BlockInfo;