+++ /dev/null
-(**
- Module: Faustexp
- Description: dimension estimation and delay estimation of faust expressions.
- @author WANG Haisheng
- Created: 03/06/2013 Modified: 04/06/2013
-*)
-
-open Types;;
-open Value;;
-
-(* EXCEPTIONS *)
-
-(** Exception raised in beam matching of faust expressions.*)
-exception Beam_Matching_Error of string;;
-
-(** Exception raised in case that the branch under call hasn't yet been programed.*)
-exception NotYetDone;;
-
-
-(* PROCESS DELAY ESTIMATION *)
-
-(** val delay : faust_exp -> int, returns the number of delays estimated staticly.
-Attention: delays of "@" is estimated as 10 constant,
-delays of "vectorize" and "serialize" haven't been implemented,
-delays of "rdtable" hasn't been implemented.*)
-let rec delay exp_faust = match exp_faust with
- |Const v -> 0
- |Ident s ->
- (
- match s with
- |Add -> 0
- |Sup -> 0
- |Mul -> 0
- |Div -> 0
- |Pass -> 0
- |Stop -> 0
- |Mem -> 1
- |Delay -> 100000 (* danger! *)
- |Floor -> 0
- |Int -> 0
- |Sin -> 0
- |Cos -> 0
- |Atan -> 0
- |Atantwo -> 0
- |Sqrt -> 0
- |Rdtable -> 100000 (* danger! *)
- |Mod -> 0
- |Larger -> 0
- |Smaller -> 0
- |Vectorize -> 100 (* danger! *)
- |Concat -> 0
- |Nth -> 0
- |Serialize -> 0
- |Prefix -> 1
- |Selecttwo -> 0
- |Selectthree -> 0
- )
- |Par (e1, e2) -> max (delay e1) (delay e2)
- |Seq (e1, e2) -> (delay e1) + (delay e2)
- |Split (e1, e2) -> (delay e1) + (delay e2)
- |Merge (e1, e2) -> (delay e1) + (delay e2)
- |Rec (e1, e2) -> delay e1;;
-
-
-(* PARSER *)
-
-(** val exp_of_string : string -> faust_exp, faust expression parser. *)
-let exp_of_string s = (Parser.main Lexer.token (Lexing.from_string s));;
-
-
-
-(* PROCESS DIMENSION ESTIMATION *)
-(* process dimension := (size of input beam, size of output beam).*)
-
-
-(** val get_root : dimension -> int * int, returns the root of dimension tree. *)
-let get_root = fun d_tree -> match d_tree with
- | End d -> d
- | Tree (d, branches) -> d;;
-
-
-(** val subtree : dimention -> int -> dimension, returns a subtree of dimension tree.*)
-let subtree = fun d_tree -> fun i ->
- match d_tree with
- | End d -> raise (Beam_Matching_Error "Subtree left absent.")
- | Tree (d, branches) -> (
- match branches with
- (left, right) -> if i = 0 then left else right);;
-
-(** val subtree_left : dimension -> dimension, returns the left subtree of dimension tree.*)
-let subtree_left = fun d_tree -> subtree d_tree 0;;
-
-
-(** val subtree_right : dimension -> dimension, returns the right subtree of dimension tree.*)
-let subtree_right = fun d_tree -> subtree d_tree 1;;
-
-
-(** val d_par : int * int -> int * int -> int * int, process dimension for constructor "par(,)",
-which is the addition of two dimensions.*)
-let d_par a b = (((fst a) + (fst b)), ((snd a) + (snd b)));;
-
-
-(** val d_seq : int * int -> int * int -> int * int, process dimension for constructor "seq(:)",
-which is (size of input beam of first exp, size of output beam of second exp)
-along with beam matching.*)
-let d_seq a b = if (snd a) = (fst b) then (fst a, snd b) else raise (Beam_Matching_Error "seq");;
-
-
-(** val d_split : int * int -> int * int -> int * int, process dimension for constructor "split(<:)",
-which is (size of input beam of first exp, size of output beam of second exp)
-along with beam matching.*)
-let d_split a b =
- if ((fst b) mod (snd a)) = 0 then
- (fst a, snd b)
- else raise (Beam_Matching_Error "split");;
-
-
-(** val d_merge : int * int -> int * int -> int * int, process dimension for constructor "merge(:>)",
-which is (size of input beam of first exp, size of output beam of second exp)
-along with beam matching. *)
-let d_merge a b =
- if ((snd a) mod (fst b)) = 0 then
- (fst a, snd b)
- else raise (Beam_Matching_Error "merge");;
-
-
-(** val d_rec : int * int -> int * int -> int * int, process dimension for constructor "rec(~)",
-which is (size of input beam of first exp - size of output beam of second exp,
-size of output beam of first exp)
-along with beam matching.*)
-let d_rec a b =
- if (fst a) >= (snd b) && (snd a) >= (fst b) then
- ((fst a) - (snd b), snd a)
- else raise (Beam_Matching_Error "rec");;
-
-
-(** val dim : faust_exp -> int * int, returns dimension for faust expression,
-along with beam matching.*)
-let rec dim exp_faust =
-
-(** val dimension_constructor : ((int * int) -> (int * int) -> (int * int)) -> faust_exp
--> faust_exp -> dimension,
-returns the dimension tree of constructor(e1, e2).*)
- let dimension_constructor = fun constructor -> fun e1 -> fun e2 ->
- let subtree1 = dim e1 in
- let subtree2 = dim e2 in
- let root = constructor (get_root subtree1) (get_root subtree2) in
- Tree (root, (subtree1, subtree2)) in
-
- match exp_faust with
- |Const v -> End (0, 1)
- |Ident s ->
- (
- match s with
- |Add -> End (2, 1)
- |Sup -> End (2, 1)
- |Mul -> End (2, 1)
- |Div -> End (2, 1)
- |Pass -> End (1, 1)
- |Stop -> End (1, 0)
- |Mem -> End (1, 1)
- |Delay -> End (2, 1)
- |Floor -> End (1, 1)
- |Int -> End (1, 1)
- |Sin -> End (1, 1)
- |Cos -> End (1, 1)
- |Atan -> End (1, 1)
- |Atantwo -> End (2, 1)
- |Sqrt -> End (1, 1)
- |Rdtable -> End (3, 1)
- |Mod -> End (2, 1)
- |Vectorize -> End (2, 1)
- |Concat -> End (2, 1)
- |Nth -> End (2, 1)
- |Serialize -> End (1, 1)
- |Larger -> End (2, 1)
- |Smaller -> End (2, 1)
- |Prefix -> End (2, 1)
- |Selecttwo -> End (3, 1)
- |Selectthree -> End (4, 1)
- )
-
- |Par (e1, e2) -> dimension_constructor d_par e1 e2
- |Seq (e1, e2) -> dimension_constructor d_seq e1 e2
- |Split (e1, e2) -> dimension_constructor d_split e1 e2
- |Merge (e1, e2) -> dimension_constructor d_merge e1 e2
- |Rec (e1, e2) -> dimension_constructor d_rec e1 e2;;
-
-
-
-(* AUXILIARY 'CONVERT_TO_STRING' FUNCTIONS *)
-
-(** val print_exp : faust_exp -> unit, print to console the input faust expression.*)
-let print_exp exp =
- let rec string_of_exp exp = match exp with
- |Const v -> "Const" ^ " (" ^ (string_of_value v) ^ ")"
- |Ident s -> "Ident" ^ " \"" ^ "s" ^ "\""
- |Par (e1, e2) -> "Par" ^ " (" ^ (string_of_exp e1) ^ ", " ^ (string_of_exp e2) ^ ")"
- |Seq (e1, e2) -> "Seq" ^ " (" ^ (string_of_exp e1) ^ ", " ^ (string_of_exp e2) ^ ")"
- |Split (e1, e2) -> "Split" ^ " (" ^ (string_of_exp e1) ^ ", " ^ (string_of_exp e2) ^ ")"
- |Merge (e1, e2) -> "Merge" ^ " (" ^ (string_of_exp e1) ^ ", " ^ (string_of_exp e2) ^ ")"
- |Rec (e1, e2) -> "Rec" ^ " (" ^ (string_of_exp e1) ^ ", " ^ (string_of_exp e2) ^ ")"
- in
- print_string("Parer : Types.faust_exp = "^ (string_of_exp exp));;
projects / Faustine.git / blobdiff