================
@@ -73,9 +73,22 @@ class DWARFDIE : public DWARFBaseDIE {
std::vector<DWARFDIE> GetDeclContextDIEs() const;
/// Return this DIE's decl context as it is needed to look up types
- /// in Clang's -gmodules debug info format.
+ /// in Clang modules. This context will include any modules or functions that
+ /// the type is declared in so an exact module match can be efficiently made.
std::vector<CompilerContext> GetDeclContext() const;
+ /// Get a context to a type so it can be looked up.
+ ///
+ /// This function uses the current DIE to fill in a CompilerContext array
+ /// that is suitable for type lookup for comparison to a TypeQuery's compiler
+ /// context (TypeQuery::GetContextRef()). If this DIE represents a named
type,
+ /// it should fill out the compiler context with the type itself as the last
+ /// entry. The declaration context should be above the type and stop at an
+ /// appropriate time, like either the translation unit or at a function
+ /// context. This is designed to allow users to efficiently look for types
+ /// using a full or partial CompilerContext array.
+ std::vector<CompilerContext> GetTypeLookupContext() const;
----------------
Michael137 wrote:
Why can't we extend `GetDeclContext` to behave like `GetTypeLookupContext`? I'm
probably missing something subtle about clang module lookup
https://github.com/llvm/llvm-project/pull/74786
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