Pavel Labath b1f29cec25 Add error handling to the DataExtractor class ... Summary: This is motivated by D63591, where we realized that there isn't a really good way of telling whether a DataExtractor is reading actual data, or is it just returning default values because it reached the end of the buffer. This patch resolves that by providing a new "Cursor" class. A Cursor object encapsulates two things: - the current position/offset in the DataExtractor - an error object Storing the error object inside the Cursor enables one to use the same pattern as the std::{io}stream API, where one can blindly perform a sequence of reads and only check for errors once at the end of the operation. Similarly to the stream API, as soon as we encounter one error, all of the subsequent operations are skipped (return default values) too, even if the would suceed with clear error state. Unlike the std::stream API (but in line with other llvm APIs), we force the error state to be checked through usage of llvm::Error. Reviewers: probinson, dblaikie, JDevlieghere, aprantl, echristo Subscribers: kristina, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D63713 llvm-svn: 370042		2019-08-27 11:24:08 +00:00
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DynamicLibrary	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ARMAttributeParser.cpp	[ARM] add target arch definitions for 8.1-M and MVE	2019-05-30 12:57:04 +00:00
AlignOfTest.cpp	[NFC] Remove LLVM_ALIGNAS	2019-07-31 03:22:08 +00:00
AlignmentTest.cpp	[LLVM][Alignment] Fix MSVC potential division by 0 warning (PR42911)	2019-08-15 16:34:23 +00:00
AllocatorTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AnnotationsTest.cpp	[Support] Try to unbreak windows buildbot	2019-04-25 11:57:40 +00:00
ArrayRecyclerTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
BinaryStreamTest.cpp	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
BlockFrequencyTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
BranchProbabilityTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
CMakeLists.txt	[LLVM][NFC] Adding an Alignment type to LLVM	2019-07-31 08:27:42 +00:00
CRCTest.cpp	Attempt to recommit r357901	2019-04-08 12:31:12 +00:00
CachePruningTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Casting.cpp	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
CheckedArithmeticTest.cpp	Add checkMulAdd helper function to CheckedArithmetic	2018-06-13 18:32:02 +00:00
Chrono.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
CommandLineTest.cpp	Revert Recommit "[CommandLine] Remove OptionCategory and SubCommand caches from the Option class."	2019-07-11 08:54:28 +00:00
CompressionTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ConvertUTFTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
CrashRecoveryTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
DJBTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
DataExtractorTest.cpp	Add error handling to the DataExtractor class	2019-08-27 11:24:08 +00:00
DebugCounterTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
DebugTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
EndianStreamTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
EndianTest.cpp	[Support/Endian] Add support for endian-specific enums	2019-03-11 09:06:18 +00:00
ErrnoTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ErrorOrTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ErrorTest.cpp	Revert "raw_ostream: add operator<< overload for std::error_code"	2019-08-14 13:59:04 +00:00
FileCheckTest.cpp	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
FileCollectorTest.cpp	[FileCollector] test: disable the directory entry collection checks on windows	2019-07-30 00:27:33 +00:00
FileOutputBufferTest.cpp	Revert "raw_ostream: add operator<< overload for std::error_code"	2019-08-14 13:59:04 +00:00
FormatVariadicTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
GlobPatternTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Host.cpp	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
ItaniumManglingCanonicalizerTest.cpp	Update more file headers across all of the LLVM projects in the monorepo	2019-01-19 10:56:40 +00:00
JSONTest.cpp	[Support] Add JSON streaming output API, faster where the heavy value types aren't needed.	2019-04-25 12:51:42 +00:00
KnownBitsTest.cpp	[KnownBits] Add computeForAddCarry()	2019-04-12 18:18:08 +00:00
LEB128Test.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
LineIteratorTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
LockFileManagerTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MD5Test.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ManagedStatic.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MatchersTest.cpp	[Support] Add a GTest matcher for Optional<T>	2019-04-25 09:03:32 +00:00
MathExtrasTest.cpp	[Support] Added overflow checking add, sub and mul.	2019-07-31 19:40:07 +00:00
MemoryBufferTest.cpp	[Support] Improve readNativeFile(Slice) interface	2019-08-22 08:13:30 +00:00
MemoryTest.cpp	[Support] Renamed member 'Size' to 'AllocatedSize' in MemoryBlock and OwningMemoryBlock.	2019-05-20 20:53:05 +00:00
NativeFormatTests.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ParallelTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Path.cpp	[Support] Improve readNativeFile(Slice) interface	2019-08-22 08:13:30 +00:00
ProcessTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ProgramTest.cpp	Revert "raw_ostream: add operator<< overload for std::error_code"	2019-08-14 13:59:04 +00:00
RegexTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ReplaceFileTest.cpp	Revert "raw_ostream: add operator<< overload for std::error_code"	2019-08-14 13:59:04 +00:00
ReverseIterationTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ScaledNumberTest.cpp	Replace llvm::isPodLike<...> by llvm::is_trivially_copyable<...>	2019-01-20 21:19:56 +00:00
SourceMgrTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
SpecialCaseListTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
StringPool.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
SwapByteOrderTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
SymbolRemappingReaderTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
TarWriterTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
TargetParserTest.cpp	[AArch64] Add support for Transactional Memory Extension (TME)	2019-07-31 12:52:17 +00:00
TaskQueueTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ThreadLocalTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ThreadPool.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Threading.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
TimerTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
TrailingObjectsTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
TrigramIndexTest.cpp	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
TypeNameTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
TypeTraitsTest.cpp	Fix compilation warnings when compiling with GCC 7.3	2019-05-06 13:41:54 +00:00
UnicodeTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
VersionTupleTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
VirtualFileSystemTest.cpp	[VFS] Add reverse iterator to OverlayFileSystem	2019-07-03 00:45:53 +00:00
YAMLIOTest.cpp	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
YAMLParserTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
formatted_raw_ostream_test.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
raw_ostream_test.cpp	Rename F_{None,Text,Append} to OF_{None,Text,Append}. NFC	2019-08-05 05:43:48 +00:00
raw_pwrite_stream_test.cpp	Revert "raw_ostream: add operator<< overload for std::error_code"	2019-08-14 13:59:04 +00:00
raw_sha1_ostream_test.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
xxhashTest.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00