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|
open Ast
open Lexing
(* Locations *)
let string_of_position p =
Printf.sprintf "%s:%i:%i" p.pos_fname p.pos_lnum (p.pos_cnum - p.pos_bol)
let string_of_extent (p,q) =
if p.pos_fname = q.pos_fname then
if p.pos_lnum = q.pos_lnum then
if p.pos_cnum = q.pos_cnum then
Printf.sprintf "%s:%i.%i" p.pos_fname p.pos_lnum (p.pos_cnum - p.pos_bol)
else
Printf.sprintf "%s:%i.%i-%i" p.pos_fname p.pos_lnum (p.pos_cnum - p.pos_bol) (q.pos_cnum - q.pos_bol)
else
Printf.sprintf "%s:%i.%i-%i.%i" p.pos_fname p.pos_lnum (p.pos_cnum - p.pos_bol) q.pos_lnum (q.pos_cnum - q.pos_bol)
else
Printf.sprintf "%s:%i.%i-%s:%i.%i" p.pos_fname p.pos_lnum (p.pos_cnum - p.pos_bol) q.pos_fname q.pos_lnum (q.pos_cnum - q.pos_bol)
(* Operators *)
let string_of_unary_op = function
| AST_UPLUS -> "+"
| AST_UMINUS -> "-"
| AST_NOT -> "not"
| AST_PRE -> "pre"
let string_of_binary_op = function
| AST_MUL -> "*"
| AST_DIV -> "/"
| AST_MOD -> "mod"
| AST_PLUS -> "+"
| AST_MINUS -> "-"
| AST_EQ -> "="
| AST_NE -> "<>"
| AST_LT -> "<"
| AST_LE -> "<="
| AST_GT -> ">"
| AST_GE -> ">="
| AST_AND -> "and"
| AST_OR -> "or"
| AST_ARROW -> "->"
let binary_precedence = function
| AST_MUL| AST_DIV| AST_MOD-> 7
| AST_PLUS | AST_MINUS -> 6
| AST_EQ | AST_NE -> 5
| AST_LT | AST_LE | AST_GT | AST_GE -> 4
| AST_AND -> 3
| AST_OR -> 2
| AST_ARROW -> 1
let expr_precedence = function
| AST_unary (op, _) -> 99
| AST_binary(op, _, _) -> binary_precedence op
| _ -> 100
(* utility *)
let print_list f sep fmt l =
let rec aux = function
| [] -> ()
| [a] -> f fmt a
| a::b -> f fmt a; Format.pp_print_string fmt sep; aux b
in
aux l
(* types *)
let string_of_typ = function
| AST_TINT -> "int"
| AST_TBOOL -> "bool"
| AST_TREAL -> "real"
(* expressions *)
let print_id fmt v =
Format.pp_print_string fmt v
let rec print_expr fmt e =
match e with
| AST_unary (op,(e1,_)) ->
Format.pp_print_string fmt (string_of_unary_op op);
if expr_precedence e1 <= expr_precedence e
then Format.fprintf fmt " (%a)" print_expr e1
else Format.fprintf fmt " %a" print_expr e1
| AST_binary (op,(e1,_),(e2,_)) ->
if expr_precedence e1 < expr_precedence e
then Format.fprintf fmt "(%a) " print_expr e1
else Format.fprintf fmt "%a " print_expr e1;
Format.pp_print_string fmt (string_of_binary_op op);
if expr_precedence e2 <= expr_precedence e
then Format.fprintf fmt " (%a)" print_expr e2
else Format.fprintf fmt " %a" print_expr e2
| AST_int_const (i,_) -> Format.pp_print_string fmt i
| AST_real_const (i,_) -> Format.pp_print_string fmt i
| AST_bool_const b -> Format.pp_print_bool fmt b
| AST_if((c,_), (t,_), (e,_)) -> Format.fprintf fmt
"if %a then %a else %a"
print_expr c print_expr t print_expr e
| AST_identifier (v,_) -> print_id fmt v
| AST_instance ((i,_),l) ->
Format.fprintf fmt "%a(%a)"
print_id i (print_list print_expr ",") (List.map fst l)
let print_lvalue fmt v =
Format.pp_print_string fmt v
(* equations *)
let indent ind = ind^" "
let rec print_eqn ind fmt = function
| AST_assign ((v,_),(e,_)) ->
Format.fprintf fmt "%s%a = %a;@\n"
ind print_lvalue v print_expr e
| AST_assume((i, _), (e, _)) ->
Format.fprintf fmt "%sassume %s : %a;@\n"
ind i print_expr e
| AST_guarantee((i, _), (e, _)) ->
Format.fprintf fmt "%sguarantee %s : %a;@\n"
ind i print_expr e
and print_block ind fmt b =
List.iter (fun (bb,_) -> print_eqn (indent ind) fmt bb) b
(* declarations *)
let print_var_decl fmt (pr, (i, _), ty) =
Format.fprintf fmt "%s%s: %s"
(if pr then "probe " else "")
i
(string_of_typ ty)
let rec print_var_decls fmt = function
| [] -> ()
| [a] -> print_var_decl fmt a
| a::r ->
print_var_decl fmt a;
Format.fprintf fmt "; ";
print_var_decls fmt r
let print_node_decl fmt d =
Format.fprintf fmt "node %s(%a) returns(%a)@\n"
d.name
print_var_decls d.args
print_var_decls d.ret;
if d.var <> [] then
Format.fprintf fmt "var %a@\n" print_var_decls d.var;
Format.fprintf fmt "let@\n%atel@\n@\n"
(print_block "") d.body
let print_const_decl fmt ((i, _), ty, (e, _)) =
Format.fprintf fmt
"const %s: %s = %a@\n@\n"
i (string_of_typ ty)
print_expr e
let print_toplevel fmt = function
| AST_node_decl (n, _) -> print_node_decl fmt n
| AST_const_decl (c, _) -> print_const_decl fmt c
let print_prog fmt p =
List.iter (print_toplevel fmt) p
|
