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type ident = string
type v = I of int | F of float | B of bool
| E of ident * int
| A of v array | S of (ident * v) list | U
| Str of string
type t =
| Bool | Int | Real
| Extern of ident
| Enum of (ident * ident list)
| Struct of ident * (ident * t) list
| Array of (t * int)
| Alpha of int
| Alias of (string * t)
| String
let (val_to_string_type : v -> string) =
function
| I _ -> "int"
| F _ -> "real"
| B _ -> "bool"
| E (e,_) -> e
| S _ -> "struct"
| A _ -> "array"
| U -> "nil"
| Str _ -> "string"
let rec (val_to_string : (float -> string) -> v -> string) =
fun s2f ->
function
| I i -> (try string_of_int i with _ -> assert false)
| F f -> s2f f
| B true -> "t"
| B false -> "f"
| E (e,_) -> e
| S fl -> "{"^(String.concat ";"
(List.map (fun (fn,fv) -> fn^"="^(val_to_string s2f fv)) fl))^"}"
| A a ->
let str = ref "[" in
let f i a = str := !str ^ (if i = 0 then "" else ",") ^ (val_to_string s2f a) in
Array.iteri f a;
(!str^"]")
| U -> "nil"
| Str str -> str
let (val_to_rif_string : (float -> string) -> v -> string) =
fun s2f ->
function
| I i -> (try string_of_int i with _ -> assert false)
| F f -> s2f f
| B true -> "t"
| B false -> "f"
| E (e,_) -> e
| S fl -> ""^(String.concat ";"
(List.map (fun (_fn,fv) -> " "^(val_to_string s2f fv)) fl))^""
| A a ->
let str = ref "" in
let f i a = str := !str ^ (if i = 0 then "" else " ") ^ (val_to_string s2f a) in
Array.iteri f a;
(!str)
| U -> "nil"
| Str str -> str
let rec (type_to_string_gen : bool -> t -> string) =
fun alias v ->
let str =
match v with
| String -> "string"
| Bool -> "bool"
| Int -> "int"
| Real -> "real"
| Extern _s -> "string"
| Enum (s, _sl) -> s
| Struct (sid,_) -> sid
| Array (ty, sz) -> Printf.sprintf "%s^%d" (type_to_string_gen alias ty) sz
| Alpha nb ->
let a_value = Char.code('a') in
let z_value = Char.code('z') in
let str =
if (nb >= 0 && nb <= (z_value - a_value)) then
("'" ^ (Char.escaped (Char.chr(a_value + nb))))
else
("'a" ^ (string_of_int nb))
in
str
| Alias(n,t) -> if alias then n else type_to_string_gen alias t
in
str
let (type_to_string : t -> string) = type_to_string_gen false
let (type_to_string_alias : t -> string) = type_to_string_gen true
let (type_of_string : string -> t) =
function
| "bool" -> Bool
| "real" -> Real
| "float" -> Real
| "int" -> Int
| "string" -> String
| s -> failwith (s ^ ": unsupported type.\n")
type vntl = (string * t) list
type subst = (string * v)
type access = Idx of int | Fld of ident | Sle of int * int * int * int
let rec (update_val : v -> v -> access list -> v) =
fun pre_v v access ->
match pre_v,access with
| _,[] -> v
| A a, (Sle(f,l,s,w))::access -> (
let a = Array.copy a in
let j = ref 0 in
let sub_array = Array.make w U in
for i = f to l do
if (i - f) mod s = 0 then (
sub_array.(!j) <- a.(i);
incr j
);
done;
let sub_array = match update_val (A sub_array) v access with
A sub_array -> sub_array | _ -> assert false
in
j := 0;
for i = f to l do
if (i - f) mod s = 0 then (
a.(i) <- sub_array.(!j);
incr j
);
done;
A a
)
| A a, (Idx i)::access ->
let a = Array.copy a
in
let a_i = update_val a.(i) v access in
a.(i) <- a_i;
A a
| S(fl), (Fld fn)::access ->
S (List.map
(fun (fn2,v2) -> if fn=fn2 then fn,update_val v2 v access else (fn2,v2))
fl)
| U,_ -> assert false
| _,_ -> assert false
let rec (create_u_val : t -> v) =
fun vt ->
match vt with
| Array(vt,size) ->
let a = Array.make size U in
for i=0 to size-1 do
a.(i) <- create_u_val vt
done;
A a
| Struct(_sn,fl) -> S(List.map (fun (fn,ft) -> fn, create_u_val ft) fl)
| _ -> U
let (create_val : t -> v -> access list -> v) =
fun vt v access ->
let u_val = create_u_val vt in
update_val u_val v access
let (_create_val_alt : t -> v -> access list -> v) =
fun vt v access ->
match vt,access with
| _,[] -> v
| Array(vt,size), (Sle(f,l,s,w))::access -> (
let j = ref 0 in
let a = Array.make size U in
let vt = Array(vt,w) in
let sub_array = match create_val vt v access
with A sa -> sa | _ -> assert false
in
for i = f to l do
if (i - f) mod s = 0 then (
a.(i) <- sub_array.(!j);
incr j
);
done;
A a
)
| Array(vt,size), (Idx i)::access ->
let a = Array.make size U in
let a_i = create_val vt v access in
a.(i) <- a_i;
A a
| Struct(_sn,fl), (Fld fn)::access ->
S(List.map
(fun (fn2,vt2) -> if fn=fn2 then fn,create_val vt2 v access else fn2,U) fl)
| _,_ -> assert false