1 (* Title: Pure/Syntax/syn_ext.ML
3 Author: Markus Wenzel and Carsten Clasohm, TU Muenchen
5 Syntax extension (internal interface).
10 val dddot_indexname: indexname
11 val constrainC: string
14 val stamp_trfun: stamp -> string * 'a -> string * ('a * stamp)
15 val mk_trfun: string * 'a -> string * ('a * stamp)
16 val eq_trfun: ('a * stamp) * ('a * stamp) -> bool
17 val tokentrans_mode: string -> (string * (string -> string * real)) list ->
18 (string * string * (string -> string * real)) list
19 val standard_token_classes: string list
30 val typ_to_nonterm: typ -> string
33 Argument of string * int |
35 Bg of int | Brk of int | En
36 datatype xprod = XProd of string * xsymb list * string * int
38 val delims_of: xprod list -> string list list
39 datatype mfix = Mfix of string * typ * string * int list * int
45 parse_ast_translation: (string * ((theory -> Ast.ast list -> Ast.ast) * stamp)) list,
46 parse_rules: (Ast.ast * Ast.ast) list,
47 parse_translation: (string * ((theory -> term list -> term) * stamp)) list,
48 print_translation: (string * ((theory -> bool -> typ -> term list -> term) * stamp)) list,
49 print_rules: (Ast.ast * Ast.ast) list,
50 print_ast_translation: (string * ((theory -> Ast.ast list -> Ast.ast) * stamp)) list,
51 token_translation: (string * string * (string -> string * real)) list}
52 val mfix_args: string -> int
53 val escape_mfix: string -> string
54 val syn_ext': bool -> (string -> bool) -> mfix list ->
55 string list -> (string * ((theory -> Ast.ast list -> Ast.ast) * stamp)) list *
56 (string * ((theory -> term list -> term) * stamp)) list *
57 (string * ((theory -> bool -> typ -> term list -> term) * stamp)) list *
58 (string * ((theory -> Ast.ast list -> Ast.ast) * stamp)) list
59 -> (string * string * (string -> string * real)) list
60 -> (Ast.ast * Ast.ast) list * (Ast.ast * Ast.ast) list -> syn_ext
61 val syn_ext: mfix list -> string list ->
62 (string * ((theory -> Ast.ast list -> Ast.ast) * stamp)) list *
63 (string * ((theory -> term list -> term) * stamp)) list *
64 (string * ((theory -> bool -> typ -> term list -> term) * stamp)) list *
65 (string * ((theory -> Ast.ast list -> Ast.ast) * stamp)) list
66 -> (string * string * (string -> string * real)) list
67 -> (Ast.ast * Ast.ast) list * (Ast.ast * Ast.ast) list -> syn_ext
68 val syn_ext_const_names: string list -> syn_ext
69 val syn_ext_rules: (Ast.ast * Ast.ast) list * (Ast.ast * Ast.ast) list -> syn_ext
71 (string * ((Ast.ast list -> Ast.ast) * stamp)) list *
72 (string * ((term list -> term) * stamp)) list *
73 (string * ((bool -> typ -> term list -> term) * stamp)) list *
74 (string * ((Ast.ast list -> Ast.ast) * stamp)) list -> syn_ext
75 val syn_ext_advanced_trfuns:
76 (string * ((theory -> Ast.ast list -> Ast.ast) * stamp)) list *
77 (string * ((theory -> term list -> term) * stamp)) list *
78 (string * ((theory -> bool -> typ -> term list -> term) * stamp)) list *
79 (string * ((theory -> Ast.ast list -> Ast.ast) * stamp)) list -> syn_ext
80 val syn_ext_tokentrfuns: (string * string * (string -> string * real)) list -> syn_ext
81 val standard_token_markers: string list
85 structure SynExt: SYN_EXT =
89 (** misc definitions **)
91 val dddot_indexname = ("dddot", 0);
92 val constrainC = "_constrain";
95 (* syntactic categories *)
98 val logicT = Type (logic, []);
103 val typeT = Type ("type", []);
106 val spropT = Type (sprop, []);
109 val anyT = Type (any, []);
113 (** datatype xprod **)
115 (*Delim s: delimiter s
116 Argument (s, p): nonterminal s requiring priority >= p, or valued token
117 Space s: some white space for printing
118 Bg, Brk, En: blocks and breaks for pretty printing*)
122 Argument of string * int |
124 Bg of int | Brk of int | En;
126 fun is_delim (Delim _) = true
127 | is_delim _ = false;
129 fun is_terminal (Delim _) = true
130 | is_terminal (Argument (s, _)) = Lexicon.is_terminal s
131 | is_terminal _ = false;
133 fun is_argument (Argument _) = true
134 | is_argument _ = false;
136 fun is_index (Argument ("index", _)) = true
137 | is_index _ = false;
139 val index = Argument ("index", 1000);
142 (*XProd (lhs, syms, c, p):
143 lhs: name of nonterminal on the lhs of the production
144 syms: list of symbols on the rhs of the production
145 c: head of parse tree
146 p: priority of this production*)
148 datatype xprod = XProd of string * xsymb list * string * int;
150 val max_pri = 1000; (*maximum legal priority*)
151 val chain_pri = ~1; (*dummy for chain productions*)
156 fun delims_of xprods =
158 fun del_of (Delim s) = SOME s
161 fun dels_of (XProd (_, xsymbs, _, _)) =
162 List.mapPartial del_of xsymbs;
164 map Symbol.explode (distinct (List.concat (map dels_of xprods)))
169 (** datatype mfix **)
171 (*Mfix (sy, ty, c, ps, p):
172 sy: rhs of production as symbolic string
173 ty: type description of production
174 c: head of parse tree
175 ps: priorities of arguments in sy
176 p: priority of production*)
178 datatype mfix = Mfix of string * typ * string * int list * int;
180 fun err_in_mfix msg (Mfix (sy, _, const, _, _)) =
181 error ((if msg = "" then "" else msg ^ "\n") ^
182 "in mixfix annotation " ^ quote sy ^ " for " ^ quote const);
187 fun typ_to_nt _ (Type (c, _)) = c
188 | typ_to_nt default _ = default;
190 (*get nonterminal for rhs*)
191 val typ_to_nonterm = typ_to_nt any;
193 (*get nonterminal for lhs*)
194 val typ_to_nonterm1 = typ_to_nt logic;
200 fun is_meta c = c mem ["(", ")", "/", "_", "\\<index>"];
202 val scan_delim_char =
203 $$ "'" |-- Scan.one ((not o Symbol.is_blank) andf Symbol.not_eof) ||
204 Scan.one ((not o is_meta) andf (not o Symbol.is_blank) andf Symbol.not_eof);
206 fun read_int ["0", "0"] = ~1
207 | read_int cs = #1 (Library.read_int cs);
210 $$ "_" >> K (Argument ("", 0)) ||
211 $$ "\\<index>" >> K index ||
212 $$ "(" |-- Scan.any Symbol.is_digit >> (Bg o read_int) ||
214 $$ "/" -- $$ "/" >> K (Brk ~1) ||
215 $$ "/" |-- Scan.any Symbol.is_blank >> (Brk o length) ||
216 Scan.any1 Symbol.is_blank >> (Space o implode) ||
217 Scan.repeat1 scan_delim_char >> (Delim o implode);
221 $$ "'" -- Scan.one Symbol.is_blank >> K NONE;
223 val scan_symbs = Scan.repeat scan_symb --| Scan.ahead (Scan.one (not_equal "'"));
224 val read_symbs = List.mapPartial I o the o Scan.read Symbol.stopper scan_symbs;
226 fun unique_index xsymbs =
227 if length (List.filter is_index xsymbs) <= 1 then xsymbs
228 else error "Duplicate index arguments (\\<index>)";
230 val read_mixfix = unique_index o read_symbs o Symbol.explode;
231 val mfix_args = length o List.filter is_argument o read_mixfix;
232 val escape_mfix = implode o map (fn s => if is_meta s then "'" ^ s else s) o Symbol.explode;
238 fun mfix_to_xprod convert is_logtype (mfix as Mfix (sy, typ, const, pris, pri)) =
241 if p >= 0 andalso p <= max_pri then ()
242 else err_in_mfix ("Precedence out of range: " ^ string_of_int p) mfix;
244 fun blocks_ok [] 0 = true
245 | blocks_ok [] _ = false
246 | blocks_ok (Bg _ :: syms) n = blocks_ok syms (n + 1)
247 | blocks_ok (En :: _) 0 = false
248 | blocks_ok (En :: syms) n = blocks_ok syms (n - 1)
249 | blocks_ok (_ :: syms) n = blocks_ok syms n;
251 fun check_blocks syms =
252 if blocks_ok syms 0 then ()
253 else err_in_mfix "Unbalanced block parentheses" mfix;
256 val cons_fst = apfst o cons;
258 fun add_args [] ty [] = ([], typ_to_nonterm1 ty)
259 | add_args [] _ _ = err_in_mfix "Too many precedences" mfix
260 | add_args ((arg as Argument ("index", _)) :: syms) ty ps =
261 cons_fst arg (add_args syms ty ps)
262 | add_args (Argument _ :: syms) (Type ("fun", [ty, tys])) [] =
263 cons_fst (Argument (typ_to_nonterm ty, 0)) (add_args syms tys [])
264 | add_args (Argument _ :: syms) (Type ("fun", [ty, tys])) (p :: ps) =
265 cons_fst (Argument (typ_to_nonterm ty, p)) (add_args syms tys ps)
266 | add_args (Argument _ :: _) _ _ =
267 err_in_mfix "More arguments than in corresponding type" mfix
268 | add_args (sym :: syms) ty ps = cons_fst sym (add_args syms ty ps);
270 fun rem_pri (Argument (s, _)) = Argument (s, chain_pri)
273 fun logify_types copy_prod (a as (Argument (s, p))) =
274 if s <> "prop" andalso is_logtype s then Argument (logic, p) else a
275 | logify_types _ a = a;
278 val raw_symbs = read_mixfix sy handle ERROR => err_in_mfix "" mfix;
279 val args = List.filter (fn Argument _ => true | _ => false) raw_symbs;
280 val (const', typ', parse_rules) =
281 if not (exists is_index args) then (const, typ, [])
284 val indexed_const = if const <> "" then "_indexed_" ^ const
285 else err_in_mfix "Missing constant name for indexed syntax" mfix;
286 val rangeT = Term.range_type typ handle Match =>
287 err_in_mfix "Missing structure argument for indexed syntax" mfix;
289 val xs = map Ast.Variable (Term.invent_names [] "xa" (length args - 1));
290 val (xs1, xs2) = Library.splitAt (Library.find_index is_index args, xs);
291 val i = Ast.Variable "i";
292 val lhs = Ast.mk_appl (Ast.Constant indexed_const)
293 (xs1 @ [Ast.mk_appl (Ast.Constant "_index") [i]] @ xs2);
294 val rhs = Ast.mk_appl (Ast.Constant const) (i :: xs);
295 in (indexed_const, rangeT, [(lhs, rhs)]) end;
297 val (symbs, lhs) = add_args raw_symbs typ' pris;
300 lhs mem ["prop", "logic"]
302 andalso not (null symbs)
303 andalso not (exists is_delim symbs);
305 if convert andalso not copy_prod then
306 (if lhs = "prop" then sprop else if is_logtype lhs then logic else lhs)
308 val symbs' = map (logify_types copy_prod) symbs;
309 val xprod = XProd (lhs', symbs', const', pri);
311 val _ = (List.app check_pri pris; check_pri pri; check_blocks symbs');
313 if Lexicon.is_terminal lhs' then err_in_mfix ("Illegal lhs: " ^ lhs') mfix
314 else if const <> "" then xprod
315 else if length (List.filter is_argument symbs') <> 1 then
316 err_in_mfix "Copy production must have exactly one argument" mfix
317 else if exists is_terminal symbs' then xprod
318 else XProd (lhs', map rem_pri symbs', "", chain_pri);
320 in (xprod', parse_rules) end;
324 (** datatype syn_ext **)
330 prmodes: string list,
331 parse_ast_translation: (string * ((theory -> Ast.ast list -> Ast.ast) * stamp)) list,
332 parse_rules: (Ast.ast * Ast.ast) list,
333 parse_translation: (string * ((theory -> term list -> term) * stamp)) list,
334 print_translation: (string * ((theory -> bool -> typ -> term list -> term) * stamp)) list,
335 print_rules: (Ast.ast * Ast.ast) list,
336 print_ast_translation: (string * ((theory -> Ast.ast list -> Ast.ast) * stamp)) list,
337 token_translation: (string * string * (string -> string * real)) list};
342 fun syn_ext' convert is_logtype mfixes consts trfuns tokentrfuns (parse_rules, print_rules) =
344 val (parse_ast_translation, parse_translation, print_translation,
345 print_ast_translation) = trfuns;
347 val (xprods, parse_rules') = map (mfix_to_xprod convert is_logtype) mfixes
348 |> split_list |> apsnd (rev o List.concat);
349 val mfix_consts = distinct (map (fn Mfix x => #3 x) mfixes @ map (fn XProd x => #3 x) xprods);
353 consts = consts union_string mfix_consts,
354 prmodes = distinct (map (fn (m, _, _) => m) tokentrfuns),
355 parse_ast_translation = parse_ast_translation,
356 parse_rules = parse_rules' @ parse_rules,
357 parse_translation = parse_translation,
358 print_translation = print_translation,
359 print_rules = map swap parse_rules' @ print_rules,
360 print_ast_translation = print_ast_translation,
361 token_translation = tokentrfuns}
365 val syn_ext = syn_ext' true (K false);
367 fun syn_ext_const_names cs = syn_ext [] cs ([], [], [], []) [] ([], []);
368 fun syn_ext_rules rules = syn_ext [] [] ([], [], [], []) [] rules;
369 fun syn_ext_advanced_trfuns trfuns = syn_ext [] [] trfuns [] ([], []);
370 fun syn_ext_tokentrfuns trfuns = syn_ext [] [] ([], [], [], []) trfuns ([], []);
372 fun syn_ext_trfuns (atrs, trs, tr's, atr's) =
373 let fun simple (name, (f, s)) = (name, (K f, s)) in
374 syn_ext_advanced_trfuns (map simple atrs, map simple trs, map simple tr's, map simple atr's)
377 fun stamp_trfun s (c, f) = (c, (f, s));
378 fun mk_trfun tr = stamp_trfun (stamp ()) tr;
379 fun eq_trfun ((_, s1:stamp), (_, s2)) = s1 = s2;
382 (* token translations *)
384 fun tokentrans_mode m trs = map (fn (s, f) => (m, s, f)) trs;
386 val standard_token_classes =
387 ["class", "tfree", "tvar", "free", "bound", "var", "num", "xnum", "xstr"];
389 val standard_token_markers = map (fn s => "_" ^ s) standard_token_classes;
394 val pure_ext = syn_ext' false (K false)
395 [Mfix ("_", spropT --> propT, "", [0], 0),
396 Mfix ("_", logicT --> anyT, "", [0], 0),
397 Mfix ("_", spropT --> anyT, "", [0], 0),
398 Mfix ("'(_')", logicT --> logicT, "", [0], max_pri),
399 Mfix ("'(_')", spropT --> spropT, "", [0], max_pri),
400 Mfix ("_::_", [logicT, typeT] ---> logicT, "_constrain", [4, 0], 3),
401 Mfix ("_::_", [spropT, typeT] ---> spropT, "_constrain", [4, 0], 3)]