Pavel Labath d0775d3cfb 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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CodeView	Removing block comments from CodeView records in assembly files & related code cleanup	2019-08-25 01:09:11 +00:00
DWARF	Add error handling to the DataExtractor class	2019-08-27 11:24:08 +00:00
GSYM	Add FileWriter to GSYM and encode/decode functions to AddressRange and AddressRanges	2019-08-21 21:48:11 +00:00
MSF	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
PDB	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
Symbolize	[llvm-objdump] Add warning messages if disassembly + source for problematic inputs	2019-08-15 05:15:22 +00:00
CMakeLists.txt	Add GSYM utility files along with unit tests.	2019-06-26 14:09:09 +00:00
LLVMBuild.txt	Fix build in shared lib mode.	2019-06-26 15:46:48 +00:00