Refactoring in faustexp.ml.

[Faustine.git] / interpretor / faustexp.ml

diff --git a/interpretor/faustexp.ml b/interpretor/faustexp.ml
index 6b324a0..684eb75 100644 (file)
--- a/interpretor/faustexp.ml
+++ b/interpretor/faustexp.ml
@@ -1,22 +1,83 @@
 (**
        Module: Faustexp        
-       Description: dimension estimation and delay estimation of faust expressions.
+       Description: Faust expression evaluation
        @author WANG Haisheng   
-       Created: 03/06/2013     Modified: 04/06/2013
+       Created: 03/06/2013     Modified: 04/08/2013
 *)
 
 open Types;;
 open Value;;
-
+open Signal;;
+open Beam;;
 
 exception NotYetDone;;
-
-
-
-class virtual expression : expression_type = 
+exception Dimension_error of string;;
+
+class dimension : int * int -> dimension_type = 
+  fun (init : int * int) -> 
+    object (self)
+      val dim_input = fst init
+      val dim_output = snd init
+
+      method input = dim_input
+      method output = dim_output
+
+      method par : dimension_type -> dimension_type = 
+       fun dim -> 
+         new dimension 
+           ((self#input + dim#input), (self#output + dim#output))
+           
+      method seq : dimension_type -> dimension_type = 
+       fun dim -> 
+         if self#output = dim#input then
+           new dimension (self#input, dim#output)
+         else raise (Dimension_error "seq dimension not matched.")
+             
+      method split : dimension_type -> dimension_type =
+       fun dim ->
+         if dim#input mod self#output = 0 then
+           new dimension (self#input, dim#output)
+         else raise (Dimension_error "split dimension not matched.")
+
+      method merge : dimension_type -> dimension_type =
+       fun dim ->
+         if self#output mod dim#input = 0 then
+           new dimension (self#input, dim#output)
+         else raise (Dimension_error "merge dimension not matched.")
+
+      method _rec : dimension_type -> dimension_type = 
+       fun dim ->
+         if self#output >= dim#input && self#input >= dim#output then
+           new dimension (self#input - dim#output, self#output)
+         else raise (Dimension_error "rec dimension not matched.")
+    end;;
+
+class process : faust_exp -> process_type = 
   fun (exp_init : faust_exp) ->
-  object
-      val exp = exp_init
+  object (self)
+    val exp = exp_init
+    val left = 
+      match exp_init with
+      |        Const b -> exp_init
+      |        Ident s -> exp_init
+      |        Par (e1, e2) -> e1
+      |        Seq (e1, e2) -> e1
+      |        Split (e1, e2) -> e1
+      |        Merge (e1, e2) -> e1
+      |        Rec (e1, e2) -> e1
+
+    val right = 
+      match exp_init with
+      |        Const b -> exp_init
+      |        Ident s -> exp_init
+      |        Par (e1, e2) -> e2
+      |        Seq (e1, e2) -> e2
+      |        Split (e1, e2) -> e2
+      |        Merge (e1, e2) -> e2
+      |        Rec (e1, e2) -> e2
+
+    val proc_left = 
+
       val dim = new dimension
       val delay = 0
       method get_exp = exp
@@ -24,12 +85,14 @@ class virtual expression : expression_type =
       method get_delay = delay
       method to_string = "NotYetDone"
       method virtual evaluate : beam_type -> beam_type
-end;;
+  end;;
 
 
-class exp_const = 
-  object
-      inherit expression
+class proc_const : faust_exp -> process_type = 
+  fun (exp_init : faust_exp) ->
+    object (self)
+      val exp = exp_init
+      val dim = 
       method evaluate = fun b1 ->
        
       end;;
@@ -74,7 +137,7 @@ class exp_rec =
 
       end;;
 
-
+*)
 
 
 
@@ -97,15 +160,15 @@ let rec delay exp_faust = match exp_faust with
                        |Pass                   ->      0
                        |Stop                   ->      0
                        |Mem                    ->      1
-                       |Delay                  ->      100000 (* danger! *)
+                       |Delay                  ->      100000 
                        |Floor                  ->      0
                        |Int                    ->      0
                        |Sin                    ->      0
-                       |Rdtable                ->      100000 (* danger! *)
+                       |Rdtable                ->      100000
                        |Mod                    ->      0
                        |Larger                 ->      0
                        |Smaller                ->      0
-                       |Vectorize              ->      100 (* danger! *)
+                       |Vectorize              ->      100
                        |Concat                 ->      0
                        |Nth                    ->      0
                        |Serialize              ->      0
@@ -152,46 +215,6 @@ 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 =