6 Java expressions and statements |
6 Java expressions and statements |
7 *) |
7 *) |
8 |
8 |
9 Term = Value + |
9 Term = Value + |
10 |
10 |
11 datatype binop = Eq | Add (* function codes for binary operation *) |
11 datatype binop = Eq | Add (* function codes for binary operation *) |
12 |
12 |
13 datatype expr |
13 datatype expr |
14 = NewC cname (* class instance creation *) |
14 = NewC cname (* class instance creation *) |
15 | Cast cname expr (* type cast *) |
15 | Cast cname expr (* type cast *) |
16 | Lit val (* literal value, also references *) |
16 | Lit val (* literal value, also references *) |
17 | BinOp binop expr expr (* binary operation *) |
17 | BinOp binop expr expr (* binary operation *) |
18 | LAcc vname (* local (incl. parameter) access *) |
18 | LAcc vname (* local (incl. parameter) access *) |
19 | LAss vname expr (* local assign *) ("_::=_" [ 90,90]90) |
19 | LAss vname expr (* local assign *) ("_::=_" [ 90,90]90) |
20 | FAcc cname expr vname (* field access *) ("{_}_.._" [10,90,99 ]90) |
20 | FAcc cname expr vname (* field access *) ("{_}_.._" [10,90,99 ]90) |
21 | FAss cname expr vname |
21 | FAss cname expr vname |
22 expr (* field ass. *) ("{_}_.._:=_" [10,90,99,90]90) |
22 expr (* field ass. *) ("{_}_.._:=_" [10,90,99,90]90) |
23 | Call expr mname |
23 | Call expr mname |
24 (ty list) (expr list) (* method call*) ("_.._'({_}_')" [90,99,10,10] 90) |
24 (ty list) (expr list) (* method call*) ("_.._'({_}_')" [90,99,10,10] 90) |
25 |
25 |
26 and stmt |
26 and stmt |
27 = Skip (* empty statement *) |
27 = Skip (* empty statement *) |
28 | Expr expr (* expression statement *) |
28 | Expr expr (* expression statement *) |
29 | Comp stmt stmt ("_;; _" [61,60]60) |
29 | Comp stmt stmt ("_;; _" [61,60]60) |
30 | Cond expr stmt stmt ("If '(_') _ Else _" [80,79,79]70) |
30 | Cond expr stmt stmt ("If '(_') _ Else _" [80,79,79]70) |
31 | Loop expr stmt ("While '(_') _" [80,79]70) |
31 | Loop expr stmt ("While '(_') _" [80,79]70) |
32 |
32 |