Mercurial > urweb
comparison tests/impl.ur @ 1093:8d3aa6c7cee0
Make summary unification more conservative; infer implicit arguments after applications
author | Adam Chlipala <adamc@hcoop.net> |
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date | Sat, 26 Dec 2009 11:56:40 -0500 |
parents | 71bafe66dbe1 |
children |
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1092:6f4b05fc4361 | 1093:8d3aa6c7cee0 |
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1 val id = fn t :: Type => fn x : t => x | 1 fun id [t :: Type] (x : t) = x |
2 val id_self = id [t :: Type -> t -> t] id | 2 val id_self = id [t :: Type -> t -> t] id |
3 | 3 |
4 val idi = fn t ::: Type => fn x : t => x | 4 fun idi [t ::: Type] (x : t) = x |
5 val idi_self = idi idi | 5 val idi_self = idi @@idi |
6 | 6 |
7 val picker = fn na :: Name => fn a ::: Type => fn nb :: Name => fn b ::: Type => fn fs ::: {Type} => | 7 fun picker [na :: Name] [a ::: Type] [nb :: Name] [b ::: Type] [fs ::: {Type}] [[na] ~ [nb]] [[na, nb] ~ fs] |
8 fn r : $([na = a, nb = b] ++ fs) => {na = r.na, nb = r.nb} | 8 (r : $([na = a, nb = b] ++ fs)) = {na = r.na, nb = r.nb} |
9 val getem = picker [#A] [#C] {A = 0, B = 1.0, C = "hi", D = {}} | 9 val getem = picker [#A] [#C] {A = 0, B = 1.0, C = "hi", D = {}} |
10 val getem2 = picker [#A] [_] {A = 0, B = 1.0, C = "hi", D = {}} | 10 val getem2 = picker [#A] [_] {A = 0, B = 1.0, C = "hi", D = {}} |
11 val getem3 = picker [#A] [_::Name] {A = 0, B = 1.0, C = "hi", D = {}} | 11 val getem3 = picker [#A] [_::Name] {A = 0, B = 1.0, C = "hi", D = {}} |
12 | 12 |
13 val picker_ohmy = fn na ::: Name => fn a ::: Type => fn nb ::: Name => fn b ::: Type => fn fs ::: {Type} => | 13 fun picker_ohmy [na ::: Name] [a ::: Type] [nb ::: Name] [b ::: Type] [fs ::: {Type}] [[na] ~ [nb]] [[na, nb] ~ fs] |
14 fn r : $([na = a, nb = b] ++ fs) => {na = r.na, nb = r.nb} | 14 (r : $([na = a, nb = b] ++ fs)) = {na = r.na, nb = r.nb} |
15 val getem_ohmy = picker_ohmy {A = 0, B = 1.0, C = "hi", D = {}} | 15 val getem_ohmy = picker_ohmy {A = 0, B = 1.0, C = "hi", D = {}} |
16 | |
17 fun proj [fs] [t] [nm :: Name] [[nm] ~ fs] (r : $([nm = t] ++ fs)) = r.nm | |
18 val one = proj [#A] {A = 1, B = True} |