25 lines
766 B
Text
25 lines
766 B
Text
/-
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Copyright (c) 2021 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Authors: Leonardo de Moura
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-/
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prelude
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import Lean.Meta.Basic
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import Lean.ScopedEnvExtension
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namespace Lean.Meta
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builtin_initialize globalInstanceExtension : SimpleScopedEnvExtension Name (PersistentHashMap Name Unit) ←
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registerSimpleScopedEnvExtension {
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initial := {}
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addEntry := fun s n => s.insert n ()
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}
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def addGlobalInstance (declName : Name) (attrKind : AttributeKind) : MetaM Unit := do
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globalInstanceExtension.add declName attrKind
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@[export lean_is_instance]
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def isGlobalInstance (env : Environment) (declName : Name) : Bool :=
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globalInstanceExtension.getState env |>.contains declName
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end Lean.Meta
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