(* ID: $Id$
Author: Florian Haftmann, TU Muenchen
*)
header {* Pretty integer literals for code generation *}
theory Pretty_Int
imports IntArith
begin
text {*
HOL numeral expressions are mapped to integer literals
in target languages, using predefined target language
operations for abstract integer operations.
*}
code_type int
(SML "IntInf.int")
(OCaml "Big'_int.big'_int")
(Haskell "Integer")
setup {*
fold (fn target => CodegenSerializer.add_pretty_numeral target
(@{const_name number_of}, @{typ "int \<Rightarrow> int"})
@{const_name Numeral.B0} @{const_name Numeral.B1}
@{const_name Numeral.Pls} @{const_name Numeral.Min}
@{const_name Numeral.Bit}
) ["SML", "OCaml", "Haskell"]
*}
code_const "Numeral.Pls" and "Numeral.Min" and "Numeral.Bit"
(SML "raise/ Fail/ \"Pls\""
and "raise/ Fail/ \"Min\""
and "!((_);/ (_);/ raise/ Fail/ \"Bit\")")
(OCaml "failwith/ \"Pls\""
and "failwith/ \"Min\""
and "!((_);/ (_);/ failwith/ \"Bit\")")
(Haskell "error/ \"Pls\""
and "error/ \"Min\""
and "error/ \"Bit\"")
code_const Numeral.pred
(SML "IntInf.- ((_), 1)")
(OCaml "Big'_int.pred'_big'_int")
(Haskell "!(_/ -/ 1)")
code_const Numeral.succ
(SML "IntInf.+ ((_), 1)")
(OCaml "Big'_int.succ'_big'_int")
(Haskell "!(_/ +/ 1)")
code_const "op + \<Colon> int \<Rightarrow> int \<Rightarrow> int"
(SML "IntInf.+ ((_), (_))")
(OCaml "Big'_int.add'_big'_int")
(Haskell infixl 6 "+")
code_const "uminus \<Colon> int \<Rightarrow> int"
(SML "IntInf.~")
(OCaml "Big'_int.minus'_big'_int")
(Haskell "negate")
code_const "op - \<Colon> int \<Rightarrow> int \<Rightarrow> int"
(SML "IntInf.- ((_), (_))")
(OCaml "Big'_int.sub'_big'_int")
(Haskell infixl 6 "-")
code_const "op * \<Colon> int \<Rightarrow> int \<Rightarrow> int"
(SML "IntInf.* ((_), (_))")
(OCaml "Big'_int.mult'_big'_int")
(Haskell infixl 7 "*")
code_const "op = \<Colon> int \<Rightarrow> int \<Rightarrow> bool"
(SML "!((_ : IntInf.int) = _)")
(OCaml "Big'_int.eq'_big'_int")
(Haskell infixl 4 "==")
code_const "op \<le> \<Colon> int \<Rightarrow> int \<Rightarrow> bool"
(SML "IntInf.<= ((_), (_))")
(OCaml "Big'_int.le'_big'_int")
(Haskell infix 4 "<=")
code_const "op < \<Colon> int \<Rightarrow> int \<Rightarrow> bool"
(SML "IntInf.< ((_), (_))")
(OCaml "Big'_int.lt'_big'_int")
(Haskell infix 4 "<")
code_reserved SML IntInf
code_reserved OCaml Big_int
end