[clangd] Propagate remote index errors via Expected
authorKirill Bobyrev <kbobyrev@google.com>
Fri, 31 Jul 2020 09:48:27 +0000 (11:48 +0200)
committerKirill Bobyrev <kbobyrev@google.com>
Fri, 31 Jul 2020 09:48:32 +0000 (11:48 +0200)
commitfb5588b0ad59522031d037b0d1a3fdcf8ada8a79
tree467c54f6e8b361fa9215fc6294aaea0976b39778
parentb0eb40ca3998c73b7e24b02e89ab3581f2daf647
[clangd] Propagate remote index errors via Expected

This is a refactoring: errors should be logged only on the highest level.
Switch from Optional to Expected in the serialization code.

Reviewed By: kadircet

Differential Revision: https://reviews.llvm.org/D84939
clang-tools-extra/clangd/index/remote/Client.cpp
clang-tools-extra/clangd/index/remote/marshalling/Marshalling.cpp
clang-tools-extra/clangd/index/remote/marshalling/Marshalling.h
clang-tools-extra/clangd/index/remote/server/Server.cpp
clang-tools-extra/clangd/unittests/remote/MarshallingTests.cpp