Theory Term

theory Term
imports Value
(*  Title:      HOL/MicroJava/J/Term.thy
    Author:     David von Oheimb, Technische Universitaet Muenchen
*)

section ‹Expressions and Statements›

theory Term imports Value begin

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          ("_::=_" [90,90]90)      ― ‹local assign›
  | FAcc cname expr vname    ("{_}_.._" [10,90,99]90) ― ‹field access›
  | FAss cname expr vname 
                    expr     ("{_}_.._:=_" [10,90,99,90]90) ― ‹field ass.›
  | Call cname expr mname 
    "ty list" "expr list"    ("{_}_.._'( {_}_')" [10,90,99,10,10] 90) ― ‹method call›

datatype_compat expr

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