sammccall added a comment.
It looks like this fixes up the location only of diagnostics attached to
particular directives (`#include`) based on some "deep" idea about the content
of the directive (the spelled header name).
Some shortcomings:
- This misses diagnostics attached to other directives / continued lines in
macro definitions / etc
- it allows diagnostics to be translated across lines even if the directive
spelling changed (in which case the ranges are incorrect since only line
numbers are updated.)
- it requires modelling the directive content in some way that needs to be
extended if we find another place that diagnostics can be attached
We discussed the idea of attaching to the text of the line, which seems pretty
generic. Needs some handling of duplicate line content but seems like something
pretty naive (closest line number with matching content?) would work well, be
just as simple and more generic. Any reason this alternative was rejected?
================
Comment at: clang-tools-extra/clangd/Preamble.h:162
+ /// to an #include or #define directive.
+ std::vector<Diag> patchedDiags() const { return PatchedDiags; }
static constexpr llvm::StringLiteral HeaderName = "__preamble_patch__.h";
----------------
this looks like a gratuitous copy - ParsedAST copies again
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D143096/new/
https://reviews.llvm.org/D143096
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