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| author | Adam Gundry <adam@well-typed.com> | 2020-10-02 20:23:27 +0100 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2020-12-24 16:34:49 -0500 |
| commit | 6f8bafb4fbddd2c8a113f5ddb04636a3a1be9355 (patch) | |
| tree | 7169b8ce5f972892c498c30ee48db2028e76edac /compiler/GHC/Hs/Instances.hs | |
| parent | 9809474462527d36b9e237ee7012b08e0845b714 (diff) | |
| download | haskell-6f8bafb4fbddd2c8a113f5ddb04636a3a1be9355.tar.gz | |
Refactor renamer datastructures
This patch significantly refactors key renamer datastructures (primarily Avail
and GlobalRdrElt) in order to treat DuplicateRecordFields in a more robust way.
In particular it allows the extension to be used with pattern synonyms (fixes
where mangled record selector names could be printed instead of field labels
(e.g. with -Wpartial-fields or hole fits, see new tests).
The key idea is the introduction of a new type GreName for names that may
represent either normal entities or field labels. This is then used in
GlobalRdrElt and AvailInfo, in place of the old way of representing fields
using FldParent (yuck) and an extra list in AvailTC.
Updates the haddock submodule.
Diffstat (limited to 'compiler/GHC/Hs/Instances.hs')
| -rw-r--r-- | compiler/GHC/Hs/Instances.hs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/compiler/GHC/Hs/Instances.hs b/compiler/GHC/Hs/Instances.hs index 7515c37fb5..3098f3a935 100644 --- a/compiler/GHC/Hs/Instances.hs +++ b/compiler/GHC/Hs/Instances.hs @@ -69,6 +69,11 @@ deriving instance Data (ABExport GhcPs) deriving instance Data (ABExport GhcRn) deriving instance Data (ABExport GhcTc) +-- deriving instance DataId p => Data (RecordPatSynField p) +deriving instance Data (RecordPatSynField GhcPs) +deriving instance Data (RecordPatSynField GhcRn) +deriving instance Data (RecordPatSynField GhcTc) + -- deriving instance (DataIdLR pL pR) => Data (PatSynBind pL pR) deriving instance Data (PatSynBind GhcPs GhcPs) deriving instance Data (PatSynBind GhcPs GhcRn) |