[lldb] Set up the structure to build type infos from DWARF #7678
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Currently, TypeSystemSwiftTypeRef queries the ReflectionContext for type infos, and ReflectionContext context can potentially query LLDBTypeInfoProvider for any types it didn't find. LLDBTypeInfoProvider produces type infos for clang types. This patch hooks up DWARFASTParserSwift into the existing system, by making LLDBTypeInfoProvider query it before looking up clang types. DWARFASTParserSwift is passed enough information to potentially recursively query ReflectionContext for sub type infos necessary to answer the current type info query.
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Currently, TypeSystemSwiftTypeRef queries the ReflectionContext for type infos, and ReflectionContext context can potentially query LLDBTypeInfoProvider for any types it didn't find. LLDBTypeInfoProvider produces type infos for clang types.
This patch hooks up DWARFASTParserSwift into the existing system, by making LLDBTypeInfoProvider query it before looking up clang types. DWARFASTParserSwift is passed enough information to potentially recursively query ReflectionContext for sub type infos necessary to answer the current type info query.