b1d5a4284d
We also changed the type of `addImportedFn` to `Array (Array α) → IO σ`. This modification avoids the `unsafeIO` hack at `parser.lean`.
91 lines
2.9 KiB
Text
91 lines
2.9 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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prelude
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import init.lean.environment
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namespace Lean
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def mkProtectedExtension : IO (SimplePersistentEnvExtension Name NameSet) :=
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registerSimplePersistentEnvExtension {
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name := `protected,
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addImportedFn := fun as => {},
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addEntryFn := fun s n => s.insert n,
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toArrayFn := fun es => es.toArray.qsort Name.quickLt
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}
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@[init mkProtectedExtension]
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constant protectedExt : SimplePersistentEnvExtension Name NameSet := default _
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@[export lean.add_protected_core]
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def addProtected (env : Environment) (n : Name) : Environment :=
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protectedExt.addEntry env n
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@[export lean.is_protected_core]
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def isProtected (env : Environment) (n : Name) : Bool :=
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match env.getModuleIdxFor n with
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| some modIdx => (protectedExt.getModuleEntries env modIdx).binSearchContains n Name.quickLt
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| none => (protectedExt.getState env).contains n
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def mkPrivateExtension : IO (EnvExtension Nat) :=
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registerEnvExtension (pure 1)
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@[init mkPrivateExtension]
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constant privateExt : EnvExtension Nat := default _
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/- Private name support.
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Suppose the user marks as declaration `n` as private. Then, we create
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the name: `_private.<module_name>.<index> ++ n`.
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We say `_private.<module_name>.<index>` is the "private prefix"
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where `<index>` comes from the environment extension `privateExt`.
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We assume that `n` is a valid user name and does not contain
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`Name.mkNumeral` constructors. Thus, we can easily convert from
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private internal name to user given name.
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-/
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def privateHeader : Name := `_private
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@[export lean.mk_private_prefix_core]
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def mkPrivatePrefix (env : Environment) : Environment × Name :=
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let idx := privateExt.getState env;
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let p := Name.mkNumeral (privateHeader ++ env.mainModule) idx;
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let env := privateExt.setState env (idx+1);
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(env, p)
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@[export lean.mk_private_name_core]
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def mkPrivateName (env : Environment) (n : Name) : Environment × Name :=
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let (env, p) := mkPrivatePrefix env;
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(env, p ++ n)
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def isPrivateName : Name → Bool
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| n@(Name.mkString p _) := n == privateHeader || isPrivateName p
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| (Name.mkNumeral p _) := isPrivateName p
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| _ := false
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@[export lean.is_private_name_core]
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def isPrivateNameExport (n : Name) : Bool :=
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isPrivateName n
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private def privateToUserNameAux : Name → Name
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| (Name.mkString p s) := Name.mkString (privateToUserNameAux p) s
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| _ := Name.anonymous
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@[export lean.private_to_user_name_core]
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def privateToUserName (n : Name) : Option Name :=
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if isPrivateName n then privateToUserNameAux n
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else none
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private def privatePrefixAux : Name → Name
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| (Name.mkString p _) := privatePrefixAux p
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| n := n
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@[export lean.private_prefix_core]
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def privatePrefix (n : Name) : Option Name :=
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if isPrivateName n then privatePrefixAux n
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else none
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end Lean
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