src/HOL/Library/Code_Integer.thy
author huffman
Sun Feb 17 06:49:53 2008 +0100 (2008-02-17)
changeset 26086 3c243098b64a
parent 26009 b6a64fe38634
child 26466 5d6b3a808131
permissions -rw-r--r--
New simpler representation of numerals, using Bit0 and Bit1 instead of BIT, B0, and B1
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(*  Title:      HOL/Library/Code_Integer.thy
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    ID:         $Id$
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    Author:     Florian Haftmann, TU Muenchen
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*)
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header {* Pretty integer literals for code generation *}
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theory Code_Integer
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imports Presburger
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begin
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text {*
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  HOL numeral expressions are mapped to integer literals
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  in target languages, using predefined target language
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  operations for abstract integer operations.
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*}
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code_type int
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  (SML "IntInf.int")
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  (OCaml "Big'_int.big'_int")
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  (Haskell "Integer")
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code_instance int :: eq
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  (Haskell -)
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setup {*
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  fold (Numeral.add_code @{const_name number_int_inst.number_of_int}
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    true true) ["SML", "OCaml", "Haskell"]
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*}
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code_const "Int.Pls" and "Int.Min" and "Int.Bit0" and "Int.Bit1"
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  (SML "raise/ Fail/ \"Pls\""
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     and "raise/ Fail/ \"Min\""
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     and "!((_);/ raise/ Fail/ \"Bit0\")"
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     and "!((_);/ raise/ Fail/ \"Bit1\")")
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  (OCaml "failwith/ \"Pls\""
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     and "failwith/ \"Min\""
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     and "!((_);/ failwith/ \"Bit0\")"
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     and "!((_);/ failwith/ \"Bit1\")")
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  (Haskell "error/ \"Pls\""
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     and "error/ \"Min\""
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     and "error/ \"Bit0\""
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     and "error/ \"Bit1\"")
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code_const Int.pred
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  (SML "IntInf.- ((_), 1)")
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  (OCaml "Big'_int.pred'_big'_int")
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  (Haskell "!(_/ -/ 1)")
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code_const Int.succ
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  (SML "IntInf.+ ((_), 1)")
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  (OCaml "Big'_int.succ'_big'_int")
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  (Haskell "!(_/ +/ 1)")
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code_const "op + \<Colon> int \<Rightarrow> int \<Rightarrow> int"
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  (SML "IntInf.+ ((_), (_))")
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  (OCaml "Big'_int.add'_big'_int")
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  (Haskell infixl 6 "+")
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code_const "uminus \<Colon> int \<Rightarrow> int"
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  (SML "IntInf.~")
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  (OCaml "Big'_int.minus'_big'_int")
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  (Haskell "negate")
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code_const "op - \<Colon> int \<Rightarrow> int \<Rightarrow> int"
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  (SML "IntInf.- ((_), (_))")
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  (OCaml "Big'_int.sub'_big'_int")
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  (Haskell infixl 6 "-")
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code_const "op * \<Colon> int \<Rightarrow> int \<Rightarrow> int"
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  (SML "IntInf.* ((_), (_))")
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  (OCaml "Big'_int.mult'_big'_int")
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  (Haskell infixl 7 "*")
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code_const "op = \<Colon> int \<Rightarrow> int \<Rightarrow> bool"
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  (SML "!((_ : IntInf.int) = _)")
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  (OCaml "Big'_int.eq'_big'_int")
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  (Haskell infixl 4 "==")
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code_const "op \<le> \<Colon> int \<Rightarrow> int \<Rightarrow> bool"
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  (SML "IntInf.<= ((_), (_))")
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  (OCaml "Big'_int.le'_big'_int")
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  (Haskell infix 4 "<=")
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code_const "op < \<Colon> int \<Rightarrow> int \<Rightarrow> bool"
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  (SML "IntInf.< ((_), (_))")
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  (OCaml "Big'_int.lt'_big'_int")
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  (Haskell infix 4 "<")
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code_reserved SML IntInf
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code_reserved OCaml Big_int
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end