src/HOL/Library/Code_Char.thy

distributed literal code generation out of central infrastructure

(*  Title:      HOL/Library/Code_Char.thy
    ID:         $Id$
    Author:     Florian Haftmann
*)

header {* Code generation of pretty characters (and strings) *}

theory Code_Char
imports Plain "~~/src/HOL/List"
begin

declare char.recs [code func del] char.cases [code func del]

lemma [code func]:
  "size (c\<Colon>char) = 0"
  by (cases c) simp

lemma [code func]:
  "char_size (c\<Colon>char) = 0"
  by (cases c) simp

code_type char
  (SML "char")
  (OCaml "char")
  (Haskell "Char")

setup {*
  fold (fn target => add_literal_char target) ["SML", "OCaml", "Haskell"] 
  #> add_literal_list_string "Haskell"
*}

code_instance char :: eq
  (Haskell -)

code_reserved SML
  char

code_reserved OCaml
  char

code_const "op = \<Colon> char \<Rightarrow> char \<Rightarrow> bool"
  (SML "!((_ : char) = _)")
  (OCaml "!((_ : char) = _)")
  (Haskell infixl 4 "==")

end