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	abate	4	(* 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	abate	43	\| Debug of debug_directive
15			and debug_directive =
16			[ `Filter of ppat * ppat
17			\| `Accept of ppat
18			\| `Compile of ppat * ppat list ]
19	abate	4
20	abate	43
21	abate	4	and pexpr = pexpr' located
22			and pexpr' =
23	abate	18	(* For debugging the typer: an expression with prescribed type *)
24			\| DebugTyper of ppat
25	abate	4
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	abate	16	\| Op of string * pexpr list
38	abate	4	\| Match of pexpr * branches
39			\| Map of pexpr * branches
40	abate	26	\| Dot of (pexpr* Types.label)
41	abate	4	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