[PATCH] D41989: [CodeComplete] Add an option to omit results from the preamble.

[Sam McCall via Phabricator via cfe-commits]

sammccall created this revision.
sammccall added reviewers: bkramer, ilya-biryukov.
Herald added a subscriber: cfe-commits.

Enumerating the contents of a namespace or global scope will omit any
decls that aren't already loaded, instead of deserializing them from the
PCH.

This allows a fast hybrid code completion where symbols from headers are
provided by an external index. (Sema already exposes the information
needed to do a reasonabl job of filtering them).
Clangd plans to implement this hybrid.

This option is just a hint - callers still need to postfilter results if
they want to *avoid* completing decls outside the main file.


Repository:
  rC Clang

https://reviews.llvm.org/D41989

Files:
  include/clang-c/Index.h
  include/clang/Sema/CodeCompleteConsumer.h
  include/clang/Sema/CodeCompleteOptions.h
  include/clang/Sema/Sema.h
  lib/Frontend/ASTUnit.cpp
  lib/Sema/SemaCodeComplete.cpp
  lib/Sema/SemaLookup.cpp
  test/Index/complete-pch-skip.cpp
  test/Index/complete-pch-skip.h
  tools/c-index-test/c-index-test.c
  tools/libclang/CIndexCodeCompletion.cpp

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