src/HOL/MicroJava/J/Term.thy

improved document (added headers etc)

(*  Title:      HOL/MicroJava/J/Term.thy
    ID:         $Id$
    Author:     David von Oheimb
    Copyright   1999 Technische Universitaet Muenchen
*)

header "Expressions and Statements"

theory Term = Value:

datatype binop = Eq | Add    (* function codes for binary operation *)

datatype expr
  = NewC cname               (* class instance creation *)
  | Cast cname expr          (* type cast *)
  | Lit val                  (* literal value, also references *)
  | BinOp binop expr expr    (* binary operation *)
  | LAcc vname               (* local (incl. parameter) access *)
  | LAss vname expr          (* local assign *) ("_::=_"   [      90,90]90)
  | FAcc cname expr vname    (* field access *) ("{_}_.._" [10,90,99   ]90)
  | FAss cname expr vname 
                    expr     (* field ass. *) ("{_}_.._:=_" [10,90,99,90]90)
  | Call cname expr mname 
    "ty list" "expr list"    (* method call*) ("{_}_.._'( {_}_')"
                                                            [10,90,99,10,10] 90)

datatype stmt
  = Skip                     (* empty statement *)
  | Expr expr                (* expression statement *)
  | Comp stmt stmt       ("_;; _"             [61,60]60)
  | Cond expr stmt stmt  ("If '(_') _ Else _" [80,79,79]70)
  | Loop expr stmt       ("While '(_') _"     [80,79]70)

end