50 lines
1.4 KiB
Text
50 lines
1.4 KiB
Text
/-
|
|
Copyright (c) 2018 Microsoft Corporation. All rights reserved.
|
|
Released under Apache 2.0 license as described in the file LICENSE.
|
|
Author: Leonardo de Moura
|
|
-/
|
|
prelude
|
|
import init.lean.name
|
|
namespace Lean
|
|
|
|
private def String.mangleAux : Nat → String.Iterator → String → String
|
|
| 0, it, r => r
|
|
| i+1, it, r =>
|
|
let c := it.curr;
|
|
if c.isAlpha || c.isDigit then
|
|
String.mangleAux i it.next (r.push c)
|
|
else if c = '_' then
|
|
String.mangleAux i it.next (r ++ "__")
|
|
else if c.toNat < 255 then
|
|
let n := c.toNat;
|
|
let r := r ++ "_x";
|
|
let r := r.push $ Nat.digitChar (n / 16);
|
|
let r := r.push $ Nat.digitChar (n % 16);
|
|
String.mangleAux i it.next r
|
|
else
|
|
let n := c.toNat;
|
|
let r := r ++ "_u";
|
|
let r := r.push $ Nat.digitChar (n / 4096);
|
|
let n := n % 4096;
|
|
let r := r.push $ Nat.digitChar (n / 256);
|
|
let n := n % 256;
|
|
let r := r.push $ Nat.digitChar (n / 16);
|
|
let r := r.push $ Nat.digitChar (n % 16);
|
|
String.mangleAux i it.next r
|
|
|
|
def String.mangle (s : String) : String :=
|
|
String.mangleAux s.length s.mkIterator ""
|
|
|
|
private def Name.mangleAux : Name → String
|
|
| Name.anonymous => ""
|
|
| Name.mkString p s =>
|
|
let m := String.mangle s;
|
|
match p with
|
|
| Name.anonymous => m
|
|
| _ => Name.mangleAux p ++ "_" ++ m
|
|
| Name.mkNumeral p n => Name.mangleAux p ++ "_" ++ toString n ++ "_"
|
|
|
|
def Name.mangle (n : Name) (pre : String := "l_") : String :=
|
|
pre ++ Name.mangleAux n
|
|
|
|
end Lean
|