* http://helm.cs.unibo.it/
*)
-let debug = true
+let debug = false
let debug_print s =
if debug then begin
prerr_endline "<NEW_TEXTUAL_PARSER>";
* thus be interpreted differently than others *)
let use_fresh_num_instances = false
+ (** does the lexer return COMMENT tokens? *)
+let return_comments = false
+
open Printf
+
open DisambiguateTypes
-exception Parse_error of string
+exception Parse_error of Token.flocation * string
+
+let cic_lexer = CicTextualLexer2.cic_lexer ~comments:return_comments ()
let fresh_num_instance =
let n = ref 0 in
let term = CicUtil.term_of_uri uri in
(uri, (fun _ _ _ -> term))
-let grammar = Grammar.gcreate CicTextualLexer2.cic_lexer
+let grammar = Grammar.gcreate cic_lexer
let term = Grammar.Entry.create grammar "term"
let term0 = Grammar.Entry.create grammar "term0"
let tactical = Grammar.Entry.create grammar "tactical"
let tactical0 = Grammar.Entry.create grammar "tactical0"
let command = Grammar.Entry.create grammar "command"
+let script = Grammar.Entry.create grammar "script"
let return_term loc term = CicAst.AttributedTerm (`Loc loc, term)
let return_tactic loc tactic = TacticAst.LocatedTactic (loc, tactic)
let return_tactical loc tactical = TacticAst.LocatedTactical (loc, tactical)
-let return_command loc cmd = cmd
+let return_command loc cmd = cmd (* TODO ZACK FIXME uhm ... why we drop loc? *)
let fail floc msg =
let (x, y) = CicAst.loc_of_floc floc in
| "_" -> Cic.Anonymous
| s -> Cic.Name s
+let string_of_name = function
+ | Cic.Anonymous -> "_"
+ | Cic.Name s -> s
+
let int_opt = function
| None -> None
| Some lexeme -> Some (int_of_string lexeme)
+ (** the uri of an inductive type (a ".ind" uri) is not meaningful without an
+ * xpointer. Still, it's likely that an user who wrote "cic:/blabla/foo.ind"
+ * actually meant "cic:/blabla/foo.ind#xpointer(1/1)", i.e. the first inductive
+ * type in a block of mutual inductive types.
+ *
+ * This function performs the expansion foo.ind -> foo#xpointer..., if needed
+ *)
+let ind_expansion uri =
+ let len = String.length uri in
+ if len >= 4 && String.sub uri (len - 4) 4 = ".ind" then
+ uri ^ "#xpointer(1/1)"
+ else
+ uri
+
EXTEND
- GLOBAL: term term0 tactic tactical tactical0 command;
+ GLOBAL: term term0 tactic tactical tactical0 command script;
int: [
[ num = NUM ->
try
int_of_string num
- with Failure _ ->
- let (x, y) = CicAst.loc_of_floc loc in
- raise (Parse_error (sprintf
- "integer literal expected at characters %d-%d" x y))
+ with Failure _ -> raise (Parse_error (loc, "integer literal expected"))
]
];
meta_subst: [
];
typed_name: [
[ PAREN "("; i = IDENT; SYMBOL ":"; typ = term; PAREN ")" ->
- (name_of_string i, Some typ)
- | i = IDENT -> (name_of_string i, None)
+ (Cic.Name i, Some typ)
+ | i = IDENT -> (Cic.Name i, None)
]
];
- substituted_name: [ (* a subs.name is an explicit substitution subject *)
- [ s = IDENT;
- subst = OPT [
+ subst: [
+ [ subst = OPT [
SYMBOL "\\subst"; (* to avoid catching frequent "a [1]" cases *)
PAREN "[";
substs = LIST1 [
] SEP SYMBOL ";";
PAREN "]" ->
substs
- ] ->
- CicAst.Ident (s, subst)
+ ] -> subst
+ ]
+ ];
+ substituted_name: [ (* a subs.name is an explicit substitution subject *)
+ [ s = IDENT; subst = subst -> CicAst.Ident (s, subst)
+ | s = URI; subst = subst -> CicAst.Uri (ind_expansion s, subst)
]
];
name: [ (* as substituted_name with no explicit substitution *)
(head, vars)
]
];
+ let_defs:[
+ [ defs = LIST1 [
+ name = IDENT;
+ args = LIST1 [
+ PAREN "(" ; names = LIST1 IDENT SEP SYMBOL ","; SYMBOL ":";
+ ty = term; PAREN ")" ->
+ (names, ty)
+ ];
+ index_name = OPT [ IDENT "on"; idx = IDENT -> idx ];
+ ty = OPT [ SYMBOL ":" ; t = term -> t ];
+ SYMBOL <:unicode<def>> (* ≝ *);
+ t1 = term ->
+ let rec list_of_binder binder ty final_term = function
+ | [] -> final_term
+ | name::tl ->
+ CicAst.Binder (binder, (Cic.Name name, Some ty),
+ list_of_binder binder ty final_term tl)
+ in
+ let rec binder_of_arg_list binder final_term = function
+ | [] -> final_term
+ | (l,ty)::tl ->
+ list_of_binder binder ty
+ (binder_of_arg_list binder final_term tl) l
+ in
+ let t1' = binder_of_arg_list `Lambda t1 args in
+ let ty' =
+ match ty with
+ | None -> None
+ | Some ty -> Some (binder_of_arg_list `Pi ty args)
+ in
+ let rec get_position_of name n = function
+ | [] -> (None,n)
+ | nam::tl ->
+ if nam = name then
+ (Some n,n)
+ else
+ (get_position_of name (n+1) tl)
+ in
+ let rec find_arg name n = function
+ | [] -> (fail loc (sprintf "Argument %s not found" name))
+ | (l,_)::tl ->
+ let (got,len) = get_position_of name 0 l in
+ (match got with
+ | None -> (find_arg name (n+len) tl)
+ | Some where -> n + where)
+ in
+ let index =
+ (match index_name with
+ | None -> 0
+ | (Some name) -> find_arg name 0 args)
+ in
+ ((Cic.Name name,ty'), t1', index)
+ ] SEP "and" -> defs
+ ]];
+ constructor: [ [ name = IDENT; SYMBOL ":"; typ = term -> (name, typ) ] ];
term0: [ [ t = term; EOI -> return_term loc t ] ];
term:
[ "letin" NONA
[ "let"; var = typed_name;
- SYMBOL "="; (* SYMBOL <:unicode<def>> (* ≝ *); *)
+ SYMBOL <:unicode<def>> (* ≝ *);
t1 = term; "in"; t2 = term ->
return_term loc (CicAst.LetIn (var, t1, t2))
| "let"; ind_kind = [ "corec" -> `CoInductive | "rec"-> `Inductive ];
- defs = LIST1 [
- var = typed_name;
- index = OPT [ PAREN "("; index = NUM; PAREN ")" ->
- int_of_string index
- ];
- SYMBOL "="; (* SYMBOL <:unicode<def>> (* ≝ *); *)
- t1 = term ->
- (var, t1, (match index with None -> 0 | Some i -> i))
- ] SEP "and";
- "in"; body = term ->
+ defs = let_defs; "in"; body = term ->
return_term loc (CicAst.LetRec (ind_kind, defs, body))
]
| "binder" RIGHTA
"with";
PAREN "[";
patterns = LIST0 [
- lhs = pattern; SYMBOL <:unicode<Rightarrow>> (* ⇒ *); rhs = term ->
+ lhs = pattern; SYMBOL <:unicode<Rightarrow>> (* ⇒ *); rhs = term
+ ->
((lhs: CicAst.case_pattern), rhs)
] SEP SYMBOL "|";
PAREN "]" ->
[ PAREN "["; idents = LIST1 IDENT SEP SYMBOL ";"; PAREN "]" -> idents ]
];
reduction_kind: [
- [ "reduce" -> `Reduce
- | "simpl" -> `Simpl
- | "whd" -> `Whd ]
+ [ [ IDENT "reduce" | IDENT "Reduce" ] -> `Reduce
+ | [ IDENT "simplify" | IDENT "Simplify" ] -> `Simpl
+ | [ IDENT "whd" | IDENT "Whd" ] -> `Whd ]
];
tactic: [
[ [ IDENT "absurd" | IDENT "Absurd" ]; t = tactic_term ->
let idents = match idents with None -> [] | Some idents -> idents in
return_tactic loc (TacticAst.Intros (num, idents))
| [ IDENT "intro" | IDENT "Intro" ] ->
- return_tactic loc (TacticAst.Intros (Some 1, []))
+ return_tactic loc (TacticAst.Intros (None, []))
| [ IDENT "left" | IDENT "Left" ] -> return_tactic loc TacticAst.Left
| [ "let" | "Let" ];
t = tactic_term; "in"; where = IDENT ->
return_tactic loc (TacticAst.LetIn (t, where))
- (* TODO Reduce *)
+ | kind = reduction_kind;
+ pat = OPT [
+ "in"; pat = [ IDENT "goal" -> `Goal | IDENT "hyp" -> `Everywhere ] ->
+ pat
+ ];
+ terms = LIST0 term SEP SYMBOL "," ->
+ let tac =
+ (match (pat, terms) with
+ | None, [] -> TacticAst.Reduce (kind, None)
+ | None, terms -> TacticAst.Reduce (kind, Some (terms, `Goal))
+ | Some pat, [] -> TacticAst.Reduce (kind, Some ([], pat))
+ | Some pat, terms -> TacticAst.Reduce (kind, Some (terms, pat)))
+ in
+ return_tactic loc tac
| [ IDENT "reflexivity" | IDENT "Reflexivity" ] ->
return_tactic loc TacticAst.Reflexivity
| [ IDENT "replace" | IDENT "Replace" ];
return_tactic loc (TacticAst.Transitivity t)
]
];
- tactical0: [ [ t = tactical; SYMBOL ";;" -> return_tactical loc t ] ];
+ tactical0: [ [ t = tactical; SYMBOL "." -> return_tactical loc t ] ];
tactical:
[ "command" NONA
[ cmd = command -> return_tactical loc (TacticAst.Command cmd) ]
| "sequence" LEFTA
[ tactics = LIST1 NEXT SEP SYMBOL ";" ->
- return_tactical loc (TacticAst.Seq tactics)
+ (match tactics with
+ | [tactic] -> tactic
+ | _ -> return_tactical loc (TacticAst.Seq tactics))
]
| "then" NONA
[ tac = tactical;
| [ IDENT "theorem" | IDENT "Theorem" ] -> `Theorem
]
];
+ inductive_spec: [ [
+ fst_name = IDENT; params = LIST0 [
+ PAREN "("; names = LIST1 IDENT SEP SYMBOL ","; SYMBOL ":";
+ typ = term; PAREN ")" -> (names, typ) ];
+ SYMBOL ":"; fst_typ = term; SYMBOL <:unicode<def>>; OPT SYMBOL "|";
+ fst_constructors = LIST0 constructor SEP SYMBOL "|";
+ tl = OPT [ "with";
+ types = LIST1 [
+ name = IDENT; SYMBOL ":"; typ = term; SYMBOL <:unicode<def>>;
+ OPT SYMBOL "|"; constructors = LIST0 constructor SEP SYMBOL "|" ->
+ (name, true, typ, constructors) ] SEP "with" -> types
+ ] ->
+ let params =
+ List.fold_right
+ (fun (names, typ) acc ->
+ (List.map (fun name -> (name, typ)) names) @ acc)
+ params []
+ in
+ let fst_ind_type = (fst_name, true, fst_typ, fst_constructors) in
+ let tl_ind_types = match tl with None -> [] | Some types -> types in
+ let ind_types = fst_ind_type :: tl_ind_types in
+ (params, ind_types)
+ ] ];
+ print_kind: [
+ [ [ IDENT "Env" | IDENT "env" | IDENT "Environment" | IDENT "environment" ]
+ -> `Env
+ | [ IDENT "Coer" | IDENT "coer" | IDENT "Coercions" | IDENT "coercions" ]
+ -> `Coer
+ ] ];
+
command: [
[ [ IDENT "abort" | IDENT "Abort" ] -> return_command loc TacticAst.Abort
| [ IDENT "proof" | IDENT "Proof" ] -> return_command loc TacticAst.Proof
| [ IDENT "quit" | IDENT "Quit" ] -> return_command loc TacticAst.Quit
| [ IDENT "qed" | IDENT "Qed" ] ->
return_command loc (TacticAst.Qed None)
+ | [ IDENT "print" | IDENT "Print" ];
+ print_kind = print_kind ->
+ return_command loc (TacticAst.Print print_kind)
| [ IDENT "save" | IDENT "Save" ]; name = IDENT ->
return_command loc (TacticAst.Qed (Some name))
| flavour = theorem_flavour; name = OPT IDENT; SYMBOL ":"; typ = term;
body = OPT [ SYMBOL <:unicode<def>> (* ≝ *); body = term -> body ] ->
return_command loc (TacticAst.Theorem (flavour, name, typ, body))
+ | "let"; ind_kind = [ "corec" -> `CoInductive | "rec"-> `Inductive ];
+ defs = let_defs ->
+ let name,ty =
+ match defs with
+ | ((Cic.Name name,Some ty),_,_) :: _ -> name,ty
+ | ((Cic.Name name,None),_,_) :: _ ->
+ fail loc ("No type given for " ^ name)
+ | _ -> assert false
+ in
+ let body = CicAst.Ident (name,None) in
+ TacticAst.Theorem(`Definition, Some name, ty,
+ Some (CicAst.LetRec (ind_kind, defs, body)))
+
+ | [ IDENT "inductive" | IDENT "Inductive" ]; spec = inductive_spec ->
+ let (params, ind_types) = spec in
+ return_command loc (TacticAst.Inductive (params, ind_types))
+ | [ IDENT "coinductive" | IDENT "CoInductive" ]; spec = inductive_spec ->
+ let (params, ind_types) = spec in
+ let ind_types = (* set inductive flags to false (coinductive) *)
+ List.map (fun (name, _, term, ctors) -> (name, false, term, ctors))
+ ind_types
+ in
+ return_command loc (TacticAst.Inductive (params, ind_types))
+ | [ IDENT "coercion" | IDENT "Coercion" ] ; name = IDENT ->
+ return_command loc (TacticAst.Coercion (CicAst.Ident (name,Some [])))
+ | [ IDENT "coercion" | IDENT "Coercion" ] ; name = URI ->
+ return_command loc (TacticAst.Coercion (CicAst.Uri (name,Some [])))
| [ IDENT "goal" | IDENT "Goal" ]; typ = term;
body = OPT [ SYMBOL <:unicode<def>> (* ≝ *); body = term -> body ] ->
return_command loc (TacticAst.Theorem (`Goal, None, typ, body))
return_command loc (TacticAst.Redo (int_opt steps))
| [ IDENT "baseuri" | IDENT "Baseuri" ]; uri = OPT QSTRING ->
return_command loc (TacticAst.Baseuri uri)
+ | [ IDENT "basedir" | IDENT "Basedir" ]; uri = OPT QSTRING ->
+ return_command loc (TacticAst.Basedir uri)
| [ IDENT "check" | IDENT "Check" ]; t = term ->
return_command loc (TacticAst.Check t)
+(*
+ | [ IDENT "alias" | IDENT "Alias" ]; spec = alias_spec ->
+ return_command loc (TacticAst.Alias spec)
+*)
]
];
+ script_entry: [
+ [ cmd = tactical0 -> Command cmd
+(* | s = COMMENT -> Comment (loc, s) *)
+ ]
+ ];
+ script: [ [ entries = LIST0 script_entry; EOI -> (loc, entries) ] ];
END
let exc_located_wrapper f =
try
- Lazy.force f
- with Stdpp.Exc_located (floc, exn) ->
- let (x, y) = CicAst.loc_of_floc floc in
- raise (Parse_error (sprintf "parse error at characters %d-%d: %s" x y
- (Printexc.to_string exn)))
+ f ()
+ with
+ | Stdpp.Exc_located (floc, Stream.Error msg) ->
+ raise (Parse_error (floc, msg))
+ | Stdpp.Exc_located (floc, exn) ->
+ raise (Parse_error (floc, (Printexc.to_string exn)))
let parse_term stream =
- exc_located_wrapper (lazy (Grammar.Entry.parse term0 stream))
+ exc_located_wrapper (fun () -> (Grammar.Entry.parse term0 stream))
let parse_tactic stream =
- exc_located_wrapper (lazy (Grammar.Entry.parse tactic stream))
+ exc_located_wrapper (fun () -> (Grammar.Entry.parse tactic stream))
let parse_tactical stream =
- exc_located_wrapper (lazy (Grammar.Entry.parse tactical0 stream))
+ exc_located_wrapper (fun () -> (Grammar.Entry.parse tactical0 stream))
+let parse_script stream =
+ exc_located_wrapper (fun () -> (Grammar.Entry.parse script stream))
(**/**)
let empty = ""
- let aliases_grammar = Grammar.gcreate CicTextualLexer2.cic_lexer
+ let aliases_grammar = Grammar.gcreate cic_lexer
let aliases = Grammar.Entry.create aliases_grammar "aliases"
let to_string env =
if s = empty then
Environment.empty
else
- try
- Grammar.Entry.parse aliases (Stream.of_string s)
- with Stdpp.Exc_located (floc, exn) ->
- let (x, y) = CicAst.loc_of_floc floc in
- raise (Parse_error (sprintf "parse error at characters %d-%d: %s" x y
- (Printexc.to_string exn)))
+ exc_located_wrapper
+ (fun () -> Grammar.Entry.parse aliases (Stream.of_string s))
end
(* vim:set encoding=utf8: *)
projects / helm.git / blobdiff