45 lines
1.6 KiB
Text
45 lines
1.6 KiB
Text
/-
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Copyright (c) 2019 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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import Lean.Environment
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namespace Lean
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def casesOnSuffix := "casesOn"
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def recOnSuffix := "recOn"
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def brecOnSuffix := "brecOn"
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def binductionOnSuffix := "binductionOn"
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def mkCasesOnName (indDeclName : Name) : Name := Name.mkStr indDeclName casesOnSuffix
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def mkRecOnName (indDeclName : Name) : Name := Name.mkStr indDeclName recOnSuffix
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def mkBRecOnName (indDeclName : Name) : Name := Name.mkStr indDeclName brecOnSuffix
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def mkBInductionOnName (indDeclName : Name) : Name := Name.mkStr indDeclName binductionOnSuffix
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builtin_initialize auxRecExt : TagDeclarationExtension ← mkTagDeclarationExtension `auxRec
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@[export lean_mark_aux_recursor]
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def markAuxRecursor (env : Environment) (declName : Name) : Environment :=
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auxRecExt.tag env declName
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@[export lean_is_aux_recursor]
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def isAuxRecursor (env : Environment) (declName : Name) : Bool :=
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auxRecExt.isTagged env declName
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def isCasesOnRecursor (env : Environment) (declName : Name) : Bool :=
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match declName with
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| Name.str _ s _ => s == casesOnSuffix && isAuxRecursor env declName
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| _ => false
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builtin_initialize noConfusionExt : TagDeclarationExtension ← mkTagDeclarationExtension `noConf
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@[export lean_mark_no_confusion]
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def markNoConfusion (env : Environment) (n : Name) : Environment :=
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noConfusionExt.tag env n
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@[export lean_is_no_confusion]
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def isNoConfusion (env : Environment) (n : Name) : Bool :=
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noConfusionExt.isTagged env n
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end Lean
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