viewcvs.cgi/parser/ast.ml

(*  Abstract syntax as produced by the parsed *)

open Location

type pprog = pmodule_item list

and pmodule_item = pmodule_item' located
and pmodule_item' =
  | TypeDecl of string * ppat
  | PatDecl of string * ppat
  | FunDecl of abstr
  | LetDecl of ppat * pexpr
  | EvalStatement of pexpr
  | Debug of debug_directive
and debug_directive =
  [ `Filter of ppat * ppat
  | `Accept of ppat
  | `Compile of ppat * ppat list ]


and pexpr = pexpr' located
and pexpr' = 
  (* For debugging the typer: an expression with prescribed type *)
  | DebugTyper of ppat
    
  (* CDuce is a Lambda-calculus ... *)
  | Var of string
  | Apply of pexpr * pexpr
  | Abstraction of abstr
      
  (* Data constructors *)
  | Cst of Types.const
  | Pair of pexpr * pexpr
  | RecordLitt of (Types.label * pexpr) list
      
  (* Data destructors *)
  | Op of string * pexpr list
  | Match of pexpr * branches
  | Map of pexpr * branches
  | Dot of (pexpr* Types.label)
and abstr = { 
  fun_name : string option; 
  fun_iface : (ppat * ppat) list;
  fun_body : branches
}

and branches = (ppat * pexpr) list
    
(* A common syntactic class for patterns and types *) 

and ppat = ppat' located
and ppat' =
  | PatVar of string
  | Recurs of ppat * (string * ppat) list
  | Internal of Types.descr
  | Or of ppat * ppat
  | And of ppat * ppat
  | Diff of ppat * ppat
  | Prod of ppat * ppat
  | Arrow of ppat * ppat
  | Record of Types.label * bool * ppat
  | Capture of Patterns.capture
  | Constant of Patterns.capture * Types.const
  | Regexp of regexp * ppat

and regexp =
  | Epsilon
  | Elem of ppat
  | Seq of regexp * regexp
  | Alt of regexp * regexp
  | Star of regexp
  | WeakStar of regexp
  | SeqCapture of Patterns.capture * regexp
 
1	(* Abstract syntax as produced by the parsed *)
2
3	open Location
4
5	type pprog = pmodule_item list
6
7	and pmodule_item = pmodule_item' located
8	and pmodule_item' =
9	\| TypeDecl of string * ppat
10	\| PatDecl of string * ppat
11	\| FunDecl of abstr
12	\| LetDecl of ppat * pexpr
13	\| EvalStatement of pexpr
14	\| Debug of debug_directive
15	and debug_directive =
16	[ `Filter of ppat * ppat
17	\| `Accept of ppat
18	\| `Compile of ppat * ppat list ]
19
20
21	and pexpr = pexpr' located
22	and pexpr' =
23	(* For debugging the typer: an expression with prescribed type *)
24	\| DebugTyper of ppat
25
26	(* CDuce is a Lambda-calculus ... *)
27	\| Var of string
28	\| Apply of pexpr * pexpr
29	\| Abstraction of abstr
30
31	(* Data constructors *)
32	\| Cst of Types.const
33	\| Pair of pexpr * pexpr
34	\| RecordLitt of (Types.label * pexpr) list
35
36	(* Data destructors *)
37	\| Op of string * pexpr list
38	\| Match of pexpr * branches
39	\| Map of pexpr * branches
40	\| Dot of (pexpr* Types.label)
41	and abstr = {
42	fun_name : string option;
43	fun_iface : (ppat * ppat) list;
44	fun_body : branches
45	}
46
47	and branches = (ppat * pexpr) list
48
49	(* A common syntactic class for patterns and types *)
50
51	and ppat = ppat' located
52	and ppat' =
53	\| PatVar of string
54	\| Recurs of ppat * (string * ppat) list
55	\| Internal of Types.descr
56	\| Or of ppat * ppat
57	\| And of ppat * ppat
58	\| Diff of ppat * ppat
59	\| Prod of ppat * ppat
60	\| Arrow of ppat * ppat
61	\| Record of Types.label * bool * ppat
62	\| Capture of Patterns.capture
63	\| Constant of Patterns.capture * Types.const
64	\| Regexp of regexp * ppat
65
66	and regexp =
67	\| Epsilon
68	\| Elem of ppat
69	\| Seq of regexp * regexp
70	\| Alt of regexp * regexp
71	\| Star of regexp
72	\| WeakStar of regexp
73	\| SeqCapture of Patterns.capture * regexp
74