(* Title: HOL/Library/Code_Char.thy
Author: Florian Haftmann
*)
header {* Code generation of pretty characters (and strings) *}
theory Code_Char
imports List Code_Evaluation Main
begin
code_type char
(SML "char")
(OCaml "char")
(Haskell "Char")
(Scala "Char")
setup {*
fold String_Code.add_literal_char ["SML", "OCaml", "Haskell", "Scala"]
#> String_Code.add_literal_list_string "Haskell"
*}
code_instance char :: equal
(Haskell -)
code_reserved SML
char
code_reserved OCaml
char
code_reserved Scala
char
code_const "HOL.equal \<Colon> char \<Rightarrow> char \<Rightarrow> bool"
(SML "!((_ : char) = _)")
(OCaml "!((_ : char) = _)")
(Haskell infix 4 "==")
(Scala infixl 5 "==")
code_const "Code_Evaluation.term_of \<Colon> char \<Rightarrow> term"
(Eval "HOLogic.mk'_char/ (IntInf.fromInt/ (Char.ord/ _))")
definition implode :: "string \<Rightarrow> String.literal" where
"implode = STR"
code_reserved SML String
code_const implode
(SML "String.implode")
(OCaml "failwith/ \"implode\"")
(Haskell "_")
(Scala "!(\"\" ++/ _)")
code_const explode
(SML "String.explode")
(OCaml "failwith/ \"explode\"")
(Haskell "_")
(Scala "!(_.toList)")
end