viewcvs.cgi/parser/ast.ml

(*  Abstract syntax as produced by the parsed *)

open Location
open Ident

type pprog = pmodule_item list

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


and pexpr = 
  | LocatedExpr of loc * pexpr

  | Forget of pexpr * ppat    
  | Op of string * pexpr list

  (* CDuce is a Lambda-calculus ... *)
  | Var of id
  | Apply of pexpr * pexpr
  | Abstraction of abstr
      
  (* Data constructors *)
  | Cst of Types.const
  | Pair of pexpr * pexpr
  | Xml of pexpr * pexpr
  | RecordLitt of pexpr label_map
      
  (* Data destructors *)
  | Match of pexpr * branches
  | Map of pexpr * branches
  | Transform of pexpr * branches
  | Xtrans of pexpr * branches
  | Dot of pexpr* label
  | RemoveField of pexpr * label

  (* Exceptions *)
  | Try of pexpr * branches

and abstr = { 
  fun_name : id 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
  | XmlT of ppat * ppat
  | Arrow of ppat * ppat
  | Optional of ppat
  | Record of bool * ppat label_map
  | Capture of id
  | Constant of id * 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 id * regexp
1	(* Abstract syntax as produced by the parsed *)
2
3	open Location
4	open Ident
5
6	type pprog = pmodule_item list
7
8	and pmodule_item = pmodule_item' located
9	and pmodule_item' =
10	\| TypeDecl of string * ppat
11	\| LetDecl of ppat * pexpr
12	\| FunDecl of pexpr
13	\| EvalStatement of pexpr
14	\| Debug of debug_directive
15	and debug_directive =
16	[ `Filter of ppat * ppat
17	\| `Sample of ppat
18	\| `Accept of ppat
19	\| `Compile of ppat * ppat list
20	\| `Subtype of ppat * ppat
21	]
22
23
24	and pexpr =
25	\| LocatedExpr of loc * pexpr
26
27	\| Forget of pexpr * ppat
28	\| Op of string * pexpr list
29
30	(* CDuce is a Lambda-calculus ... *)
31	\| Var of id
32	\| Apply of pexpr * pexpr
33	\| Abstraction of abstr
34
35	(* Data constructors *)
36	\| Cst of Types.const
37	\| Pair of pexpr * pexpr
38	\| Xml of pexpr * pexpr
39	\| RecordLitt of pexpr label_map
40
41	(* Data destructors *)
42	\| Match of pexpr * branches
43	\| Map of pexpr * branches
44	\| Transform of pexpr * branches
45	\| Xtrans of pexpr * branches
46	\| Dot of pexpr* label
47	\| RemoveField of pexpr * label
48
49	(* Exceptions *)
50	\| Try of pexpr * branches
51
52	and abstr = {
53	fun_name : id option;
54	fun_iface : (ppat * ppat) list;
55	fun_body : branches
56	}
57
58	and branches = (ppat * pexpr) list
59
60	(* A common syntactic class for patterns and types *)
61
62	and ppat = ppat' located
63	and ppat' =
64	\| PatVar of string
65	\| Recurs of ppat * (string * ppat) list
66	\| Internal of Types.descr
67	\| Or of ppat * ppat
68	\| And of ppat * ppat
69	\| Diff of ppat * ppat
70	\| Prod of ppat * ppat
71	\| XmlT of ppat * ppat
72	\| Arrow of ppat * ppat
73	\| Optional of ppat
74	\| Record of bool * ppat label_map
75	\| Capture of id
76	\| Constant of id * Types.const
77	\| Regexp of regexp * ppat
78
79	and regexp =
80	\| Epsilon
81	\| Elem of ppat
82	\| Seq of regexp * regexp
83	\| Alt of regexp * regexp
84	\| Star of regexp
85	\| WeakStar of regexp
86	\| SeqCapture of id * regexp