bookshelf/DocGen4/Process/InstanceInfo.lean

42 lines
1.3 KiB
Plaintext
Raw Normal View History

2023-05-11 13:27:25 +00:00
/-
Copyright (c) 2022 Henrik Böving. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Henrik Böving
-/
import Lean
import DocGen4.Process.Base
import DocGen4.Process.NameInfo
import DocGen4.Process.DefinitionInfo
namespace DocGen4.Process
open Lean Meta
def getInstanceTypes (typ : Expr) : MetaM (Array Name) := do
let (_, _, tail) ← forallMetaTelescopeReducing typ
let args := tail.getAppArgs
let (_, names) ← args.mapM (Expr.forEach · findName) |>.run .empty
return names
where
findName : Expr → StateRefT (Array Name) MetaM Unit
| .const name _ => modify (·.push name)
| .sort .zero => modify (·.push "_builtin_prop")
| .sort (.succ _) => modify (·.push "_builtin_typeu")
| .sort _ => modify (·.push "_builtin_sortu")
| _ => return ()
def InstanceInfo.ofDefinitionVal (v : DefinitionVal) : MetaM InstanceInfo := do
let mut info ← DefinitionInfo.ofDefinitionVal v
let some className ← isClass? v.type | unreachable!
if let some instAttr ← getDefaultInstance v.name className then
info := { info with attrs := info.attrs.push instAttr }
let typeNames ← getInstanceTypes v.type
return {
toDefinitionInfo := info,
className,
typeNames
}
end DocGen4.Process