quox/lib/Quox/Syntax/Term/Pretty.idr

116 lines
3.8 KiB
Idris

module Quox.Syntax.Term.Pretty
import Quox.Syntax.Term.Base
import Quox.Syntax.Term.Split
import Quox.Syntax.Term.Subst
import Quox.Pretty
import Data.Vect
%default total
private %inline
arrowD, lamD, eqndD, dlamD, annD : Pretty.HasEnv m => m (Doc HL)
arrowD = hlF Syntax $ ifUnicode "" "->"
lamD = hlF Syntax $ ifUnicode "λ" "fun"
eqndD = hlF Syntax $ ifUnicode "" "=="
dlamD = hlF Syntax $ ifUnicode "λᴰ" "dfun"
annD = hlF Syntax $ ifUnicode "" "::"
private %inline
typeD, eqD, colonD : Doc HL
typeD = hl Syntax "Type"
eqD = hl Syntax "Eq"
colonD = hl Syntax ":"
mutual
export covering
PrettyHL q => PrettyHL (Term q d n) where
prettyM (TYPE l) =
parensIfM App $ typeD <//> !(withPrec Arg $ prettyM l)
prettyM (Pi qty x s t) =
parensIfM Outer $ hang 2 $
!(prettyBinder [qty] x s) <++> !arrowD
<//> !(under T x $ prettyM t)
prettyM (Lam x t) =
let GotLams {names, body, _} = getLams' [x] t.term Refl in
prettyLams T (toList names) body
prettyM (Eq _ (DUnused ty) l r) =
parensIfM Eq !(withPrec InEq $ pure $
sep [!(prettyM l) <++> !eqndD, !(prettyM r) <++> colonD, !(prettyM ty)])
prettyM (Eq i (DUsed ty) l r) =
parensIfM App $
eqD <++>
sep [bracks !(withPrec Outer $ pure $ hang 2 $
sep [hl DVar !(prettyM i) <++> !arrowD,
!(under D i $ prettyM ty)]),
!(withPrec Arg $ prettyM l),
!(withPrec Arg $ prettyM r)]
prettyM (DLam i t) =
let GotDLams {names, body, _} = getDLams' [i] t.term Refl in
prettyLams D (toList names) body
prettyM (E e) = bracks <$> prettyM e
prettyM (CloT s th) =
parensIfM SApp . hang 2 =<<
[|withPrec SApp (prettyM s) </> prettyTSubst th|]
prettyM (DCloT s th) =
parensIfM SApp . hang 2 =<<
[|withPrec SApp (prettyM s) </> prettyDSubst th|]
export covering
PrettyHL q => PrettyHL (Elim q d n) where
prettyM (F x) =
hl' Free <$> prettyM x
prettyM (B i) =
prettyVar TVar TVarErr (!ask).tnames i
prettyM (e :@ s) =
let GotArgs {fun, args, _} = getArgs' e [s] in
prettyApps fun args
prettyM (e :% d) =
let GotDArgs {fun, args, _} = getDArgs' e [d] in
prettyApps fun args
prettyM (s :# a) =
parensIfM Ann $ hang 2 $
!(withPrec AnnL $ prettyM s) <++> !annD
<//> !(withPrec Ann $ prettyM a)
prettyM (CloE e th) =
parensIfM SApp . hang 2 =<<
[|withPrec SApp (prettyM e) </> prettyTSubst th|]
prettyM (DCloE e th) =
parensIfM SApp . hang 2 =<<
[|withPrec SApp (prettyM e) </> prettyDSubst th|]
export covering
PrettyHL q => PrettyHL (ScopeTerm q d n) where
prettyM body = prettyM body.term
export covering
prettyTSubst : Pretty.HasEnv m => PrettyHL q =>
TSubst q d from to -> m (Doc HL)
prettyTSubst s = prettySubstM prettyM (!ask).tnames TVar "[" "]" s
export covering
prettyBinder : Pretty.HasEnv m => PrettyHL q =>
List q -> Name -> Term q d n -> m (Doc HL)
prettyBinder pis x a =
pure $ parens $ hang 2 $
hsep [hl TVar !(prettyM x),
sep [!(prettyQtyBinds pis),
hsep [colonD, !(withPrec Outer $ prettyM a)]]]
export covering
prettyLams : Pretty.HasEnv m => PrettyHL q =>
BinderSort -> List Name -> Term q _ _ -> m (Doc HL)
prettyLams sort names body = do
lam <- case sort of T => lamD; D => dlamD
header <- sequence $ [hl TVar <$> prettyM x | x <- names] ++ [arrowD]
body <- unders sort names $ prettyM body
parensIfM Outer $ sep (lam :: header) <//> body
export covering
prettyApps : Pretty.HasEnv m => PrettyHL f => PrettyHL a =>
f -> List a -> m (Doc HL)
prettyApps fun args =
parensIfM App =<< withPrec Arg
[|prettyM fun <//> (align . sep <$> traverse prettyM args)|]