56 lines
1.7 KiB
Text
56 lines
1.7 KiB
Text
/-
|
||
Copyright (c) 2017 Microsoft Corporation. All rights reserved.
|
||
Released under Apache 2.0 license as described in the file LICENSE.
|
||
Authors: Sebastian Ullrich
|
||
-/
|
||
prelude
|
||
import init.meta.expr init.util
|
||
|
||
@[reducible] meta def {u} has_reflect (α : Sort u) := Π a : α, reflected a
|
||
|
||
meta instance bool.reflect : has_reflect bool
|
||
| tt := `(tt)
|
||
| ff := `(ff)
|
||
|
||
section
|
||
local attribute [semireducible] reflected
|
||
|
||
meta instance nat.reflect : has_reflect ℕ
|
||
| n := if n = 0 then `(0 : ℕ)
|
||
else if n = 1 then `(1 : ℕ)
|
||
else if n % 2 = 0 then `(bit0 %%(nat.reflect (n / 2)) : ℕ)
|
||
else `(bit1 %%(nat.reflect (n / 2)) : ℕ)
|
||
|
||
meta instance unsigned.reflect : has_reflect unsigned
|
||
| ⟨n, pr⟩ := `(unsigned.of_nat' n)
|
||
|
||
end
|
||
|
||
meta instance name.reflect : has_reflect name
|
||
| name.anonymous := `(name.anonymous)
|
||
| (name.mk_string s n) := `(λ n, name.mk_string s n).subst (name.reflect n)
|
||
| (name.mk_numeral i n) := `(λ n, name.mk_numeral i n).subst (name.reflect n)
|
||
|
||
meta instance list.reflect {α : Type} [has_reflect α] [reflected α] : has_reflect (list α)
|
||
| [] := `([])
|
||
| (h::t) := `(λ t, h :: t).subst (list.reflect t)
|
||
|
||
meta instance option.reflect {α : Type} [has_reflect α] [reflected α] : has_reflect (option α)
|
||
| (some x) := `(_)
|
||
| none := `(_)
|
||
|
||
meta instance unit.reflect : has_reflect unit
|
||
| () := `(_)
|
||
|
||
meta instance prod.reflect {α β : Type} [has_reflect α] [reflected α] [has_reflect β] [reflected β]
|
||
: has_reflect (α × β)
|
||
| ⟨x, y⟩ := `(_)
|
||
|
||
meta instance pos.reflect : has_reflect pos
|
||
| ⟨l, c⟩ := `(_)
|
||
|
||
meta instance sum.reflect {α β : Type} [has_reflect α] [reflected α] [has_reflect β] [reflected β]
|
||
: has_reflect (sum α β)
|
||
| (sum.inl _) := `(_)
|
||
| (sum.inr _) := `(_)
|
||
|