viewcvs.cgi/parser/ast.ml

(*  Abstract syntax as produced by the parsed *)

open Location
open Ident

type schema_item_kind = [ `Type | `Element | `Attribute | `Any ]

type pprog = pmodule_item list

and pmodule_item = pmodule_item' located
and pmodule_item' =
  | TypeDecl of U.t * ppat
  | SchemaDecl of string * Schema_types.schema  (* name, schema *)
  | LetDecl of ppat * pexpr
  | FunDecl of pexpr
  | Namespace of U.t * Ns.t
  | EvalStatement of pexpr
  | Debug of debug_directive
  | Directive of toplevel_directive
and debug_directive =
  [ `Filter of ppat * ppat
  | `Sample of ppat
  | `Accept of ppat
  | `Compile of ppat * ppat list 
  | `Subtype of ppat * ppat
  ]
and toplevel_directive =
  [ `Quit
  | `Env
  | `Reinit_ns
  ]


and pconst =
  | Const_internal of Types.const
  | Const_atom of U.t

and pexpr = 
  | LocatedExpr of loc * pexpr

  (* CDuce is a Lambda-calculus ... *)
  | Var of id
  | Apply of pexpr * pexpr
  | Abstraction of abstr
      
  (* Data constructors *)
  | Cst of pconst
  | Pair of pexpr * pexpr
  | Xml of pexpr * pexpr
  | RecordLitt of (label * pexpr) list
  | String of U.uindex * U.uindex * U.t * pexpr
      
  (* Data destructors *)
  | Match of pexpr * branches
  | Map of pexpr * branches
  | Transform of pexpr * branches
  | Xtrans of pexpr * branches
  | Validate of pexpr * string * string (* exp, schema name, element name *)
  | Dot of pexpr * label
  | RemoveField of pexpr * label

  (* Exceptions *)
  | Try of pexpr * branches

  (* Other *)
  | NamespaceIn of U.t * Ns.t * pexpr
  | Forget of pexpr * ppat    
  | Op of string * pexpr list
  | Ref of pexpr * ppat


and label = U.t

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 U.t
  | SchemaVar of  (* type/pattern schema variable *)
      schema_item_kind * string * string
  | AtomT of U.t
  | NsT of U.t
  | Recurs of ppat * (U.t * 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 * (label * ppat) list
  | Capture of id
  | Constant of id * pconst
  | Regexp of regexp * ppat
      (* regular expression, continuation: [ re ; cont ], e.g: [ re ; nil ] *)

and regexp =
  | Epsilon
  | Elem of ppat
  | Seq of regexp * regexp
  | Alt of regexp * regexp
  | Star of regexp
  | WeakStar of regexp
  | SeqCapture of id * regexp

open Printf
1	abate	4	(* Abstract syntax as produced by the parsed *)
2
3			open Location
4	abate	225	open Ident
5	abate	4
6	abate	501	type schema_item_kind = [ `Type \| `Element \| `Attribute \| `Any ]
7
8	abate	4	type pprog = pmodule_item list
9
10			and pmodule_item = pmodule_item' located
11			and pmodule_item' =
12	abate	529	\| TypeDecl of U.t * ppat
13	abate	501	\| SchemaDecl of string * Schema_types.schema (* name, schema *)
14	abate	4	\| LetDecl of ppat * pexpr
15	abate	431	\| FunDecl of pexpr
16	abate	542	\| Namespace of U.t * Ns.t
17	abate	4	\| EvalStatement of pexpr
18	abate	43	\| Debug of debug_directive
19	abate	446	\| Directive of toplevel_directive
20	abate	43	and debug_directive =
21			[ `Filter of ppat * ppat
22	abate	407	\| `Sample of ppat
23	abate	43	\| `Accept of ppat
24	abate	75	\| `Compile of ppat * ppat list
25	abate	224	\| `Subtype of ppat * ppat
26	abate	75	]
27	abate	446	and toplevel_directive =
28			[ `Quit
29			\| `Env
30	abate	553	\| `Reinit_ns
31	abate	446	]
32	abate	4
33	abate	43
34	abate	529	and pconst =
35			\| Const_internal of Types.const
36	abate	542	\| Const_atom of U.t
37	abate	529
38	abate	316	and pexpr =
39			\| LocatedExpr of loc * pexpr
40
41	abate	4	(* CDuce is a Lambda-calculus ... *)
42	abate	225	\| Var of id
43	abate	4	\| Apply of pexpr * pexpr
44			\| Abstraction of abstr
45
46			(* Data constructors *)
47	abate	529	\| Cst of pconst
48	abate	4	\| Pair of pexpr * pexpr
49	abate	110	\| Xml of pexpr * pexpr
50	abate	549	\| RecordLitt of (label * pexpr) list
51	abate	522	\| String of U.uindex * U.uindex * U.t * pexpr
52	abate	4
53			(* Data destructors *)
54			\| Match of pexpr * branches
55	abate	421	\| Map of pexpr * branches
56			\| Transform of pexpr * branches
57	abate	331	\| Xtrans of pexpr * branches
58	abate	501	\| Validate of pexpr * string * string (* exp, schema name, element name *)
59			\| Dot of pexpr * label
60	abate	240	\| RemoveField of pexpr * label
61	abate	64
62			(* Exceptions *)
63			\| Try of pexpr * branches
64
65	abate	530	(* Other *)
66	abate	542	\| NamespaceIn of U.t * Ns.t * pexpr
67	abate	623	\| Forget of pexpr * ppat
68			\| Op of string * pexpr list
69			\| Ref of pexpr * ppat
70	abate	530
71	abate	623
72
73	abate	549	and label = U.t
74
75	abate	4	and abstr = {
76	abate	225	fun_name : id option;
77	abate	4	fun_iface : (ppat * ppat) list;
78			fun_body : branches
79			}
80
81			and branches = (ppat * pexpr) list
82
83			(* A common syntactic class for patterns and types *)
84
85			and ppat = ppat' located
86			and ppat' =
87	abate	529	\| PatVar of U.t
88	abate	501	\| SchemaVar of (* type/pattern schema variable *)
89			schema_item_kind * string * string
90	abate	542	\| AtomT of U.t
91			\| NsT of U.t
92	abate	529	\| Recurs of ppat * (U.t * ppat) list
93	abate	4	\| Internal of Types.descr
94			\| Or of ppat * ppat
95	abate	121	\| And of ppat * ppat
96	abate	4	\| Diff of ppat * ppat
97			\| Prod of ppat * ppat
98	abate	110	\| XmlT of ppat * ppat
99	abate	4	\| Arrow of ppat * ppat
100	abate	229	\| Optional of ppat
101	abate	549	\| Record of bool * (label * ppat) list
102	abate	225	\| Capture of id
103	abate	529	\| Constant of id * pconst
104	abate	4	\| Regexp of regexp * ppat
105	abate	501	(* regular expression, continuation: [ re ; cont ], e.g: [ re ; nil ] *)
106	abate	4
107			and regexp =
108			\| Epsilon
109			\| Elem of ppat
110			\| Seq of regexp * regexp
111			\| Alt of regexp * regexp
112			\| Star of regexp
113			\| WeakStar of regexp
114	abate	225	\| SeqCapture of id * regexp
115	abate	501
116			open Printf