lean4-htt/library/init/meta/attribute.lean
Leonardo de Moura 572751c56e feat(frontends/lean): force user to use meta keyword on meta inductive/structure/class
Before this commit, we were inferring whether an
inductive/structure/class were meta or not. This was bad since the user
had no clue whether the type was trusted (non meta) or not.
Moreover, users could get confused by this behavior and assume the
kernel was allowing trusted code to rely on untrusted one.
2016-09-29 17:56:35 -07:00

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/-
Copyright (c) 2016 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Sebastian Ullrich
-/
prelude
import init.meta.tactic
meta constant attribute.get_instances : name → tactic (list name)
meta constant attribute.fingerprint : name → tactic nat
structure user_attribute :=
(name : name)
(descr : string)
/- Registers a new user-defined attribute. The argument must be the name of a definition of type
`user_attribute` or a sub-structure. -/
meta constant attribute.register : name → command
meta structure caching_user_attribute extends user_attribute :=
(Cache : Type)
(cache : list declaration → Cache)
meta constant caching_user_attribute.get_cache :
Π(attr : caching_user_attribute), tactic (caching_user_attribute.Cache attr)