fad0e69cc7
This PR fixes name mangling to be unambiguous / injective by adding `00` for disambiguation where necessary. Additionally, the inverse function, `Lean.Name.unmangle` has been added which can be used to unmangle a mangled identifier. This unmangler has been added to demonstrate the injectivity but also to allow unmangling identifiers e.g. for debugging purposes. Closes #10724
31 lines
1.1 KiB
Text
31 lines
1.1 KiB
Text
def main : IO Unit := pure () /- -- TODO: remove after stage0 update
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def showChars : Nat → String → String.Pos.Raw → IO Unit
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| 0, _, _ => pure ()
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| n+1, s, idx => do
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unless s.atEnd idx do
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IO.println (">> " ++ toString (s.get idx)) *>
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showChars n s (s.next idx)
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def main : IO UInt32 :=
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let s₁ := "hello α_world_β";
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let b : String.Pos.Raw := 0;
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let e := s₁.rawEndPos;
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IO.println (s₁.extract b e) *>
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IO.println (s₁.extract (b+ " ") e) *>
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IO.println (s₁.extract (b+ " ") (e.unoffsetBy ⟨1⟩)) *>
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IO.println (s₁.extract (b.offsetBy ⟨2⟩) (e.unoffsetBy ⟨2⟩)) *>
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IO.println (s₁.extract (b.offsetBy ⟨7⟩) e) *>
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IO.println (s₁.extract (b.offsetBy ⟨8⟩) e) *>
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IO.println (toString e) *>
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IO.println (repr " aaa ".trim) *>
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showChars s₁.length s₁ 0 *>
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IO.println ("abc".isPrefixOf "abcd") *>
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IO.println ("abcd".isPrefixOf "abcd") *>
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IO.println ("".isPrefixOf "abcd") *>
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IO.println ("".isPrefixOf "") *>
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IO.println ("ab".isPrefixOf "cb") *>
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IO.println ("ab".isPrefixOf "a") *>
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IO.println ("αb".isPrefixOf "αbc") *>
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IO.println ("\x00a").length *>
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pure 0
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-/
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