src/HOL/Library/Code_Integer.thy

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/HOL/Library/Code_Integer.thy	Fri Oct 12 10:26:18 2007 +0200
@@ -0,0 +1,99 @@
+(*  Title:      HOL/Library/Code_Integer.thy
+    ID:         $Id$
+    Author:     Florian Haftmann, TU Muenchen
+*)
+
+header {* Pretty integer literals for code generation *}
+
+theory Code_Integer
+imports IntArith Code_Index
+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")
+
+code_instance int :: eq
+  (Haskell -)
+
+setup {*
+  fold (fn target => CodeTarget.add_pretty_numeral target true
+    @{const_name number_int_inst.number_of_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_const index_of_int and int_of_index
+  (SML "IntInf.toInt" and "IntInf.fromInt")
+  (OCaml "Big'_int.int'_of'_big'_int" and "Big'_int.big'_int'_of'_int")
+  (Haskell "_" and "_")
+
+code_reserved SML IntInf
+code_reserved OCaml Big_int
+
+end
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