coop/rose-ash
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

haskell: deriving (Eq, Show) for ADTs (+11 tests, 565/565)
Some checks failed
Test, Build, and Deploy / test-build-deploy (push) Failing after 34s
Details

Browse Source 
Parser parses optional deriving clause; only appended to AST when non-empty.
hk-bind-decls! data arm generates dictShow_Con / dictEq_Con per constructor.
hk-binop == and /= now deep-force both sides (SX dict equality is by
reference — two thunks wrapping the same value compared as not-equal without
this). Three token-type fixes in the deriving parser (lparen/rparen/comma,
not "special").

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
giles
2026-05-06 12:25:51 +00:00
parent 6c1a953c80
commit 1c45262577
4 changed files with 195 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
lib/haskell/parser.sx
View File

@@ -1250,7 +1250,8 @@
(let
((name (get (hk-advance!) "value"))
(tvars (hk-parse-tvars))
(cons-list (list)))
(cons-list (list))
(deriving-list (list)))
(when
(hk-match? "reservedop" "=")
(do
@@ -1267,7 +1268,34 @@
(append! cons-list (hk-parse-con-def))
(hk-dc-loop)))))
(hk-dc-loop)))
(list :data name tvars cons-list))))
(when
(hk-match? "reserved" "deriving")
(do
(hk-advance!)
(cond
((hk-match? "lparen" nil)
(do
(hk-advance!)
(define
hk-der-loop
(fn
()
(when
(hk-match? "conid" nil)
(do
(append!
deriving-list
(get (hk-advance!) "value"))
(when (hk-match? "comma" nil) (hk-advance!))
(hk-der-loop)))))
(hk-der-loop)
(hk-expect! "rparen" nil)))
((hk-match? "conid" nil)
(append! deriving-list (get (hk-advance!) "value"))))))
(if
(empty? deriving-list)
(list :data name tvars cons-list)
(list :data name tvars cons-list deriving-list)))))
(define
hk-parse-class
(fn