author | wenzelm |
Mon, 08 Oct 2007 18:13:09 +0200 | |
changeset 24910 | 53b20f786a5e |
parent 23789 | 1993b865c5ac |
child 25541 | 68de88c7e877 |
permissions | -rw-r--r-- |
5826 | 1 |
(* Title: Pure/Isar/outer_parse.ML |
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ID: $Id$ |
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Author: Markus Wenzel, TU Muenchen |
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Generic parsers for Isabelle/Isar outer syntax. |
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*) |
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signature OUTER_PARSE = |
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sig |
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type token |
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val group: string -> (token list -> 'a) -> token list -> 'a |
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val !!! : (token list -> 'a) -> token list -> 'a |
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8581
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!!!! = cut "Corrupted outer syntax in presentation";
wenzelm
parents:
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diff
changeset
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val !!!! : (token list -> 'a) -> token list -> 'a |
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val triple1: ('a * 'b) * 'c -> 'a * 'b * 'c |
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val triple2: 'a * ('b * 'c) -> 'a * 'b * 'c |
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val triple_swap: ('a * 'b) * 'c -> ('a * 'c) * 'b |
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val not_eof: token list -> token * token list |
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val position: (token list -> 'a * 'b) -> token list -> ('a * Position.T) * 'b |
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val command: token list -> string * token list |
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val keyword: token list -> string * token list |
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val short_ident: token list -> string * token list |
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val long_ident: token list -> string * token list |
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val sym_ident: token list -> string * token list |
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val minus: token list -> string * token list |
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val term_var: token list -> string * token list |
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val type_ident: token list -> string * token list |
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val type_var: token list -> string * token list |
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val number: token list -> string * token list |
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val string: token list -> string * token list |
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val alt_string: token list -> string * token list |
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val verbatim: token list -> string * token list |
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val sync: token list -> string * token list |
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val eof: token list -> string * token list |
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val $$$ : string -> token list -> string * token list |
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val reserved : string -> token list -> string * token list |
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val semicolon: token list -> string * token list |
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val underscore: token list -> string * token list |
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val maybe: (token list -> 'a * token list) -> token list -> 'a option * token list |
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val tag_name: token list -> string * token list |
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val tags: token list -> string list * token list |
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val opt_unit: token list -> unit * token list |
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val opt_keyword: string -> token list -> bool * token list |
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val begin: token list -> string * token list |
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val opt_begin: token list -> bool * token list |
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val nat: token list -> int * token list |
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val enum: string -> (token list -> 'a * token list) -> token list -> 'a list * token list |
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val enum1: string -> (token list -> 'a * token list) -> token list -> 'a list * token list |
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val list: (token list -> 'a * token list) -> token list -> 'a list * token list |
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val list1: (token list -> 'a * token list) -> token list -> 'a list * token list |
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val and_list: (token list -> 'a * token list) -> token list -> 'a list * token list |
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val and_list1: (token list -> 'a * token list) -> token list -> 'a list * token list |
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val name: token list -> bstring * token list |
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val xname: token list -> xstring * token list |
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val text: token list -> string * token list |
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val path: token list -> Path.T * token list |
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val parname: token list -> string * token list |
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val sort: token list -> string * token list |
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val arity: token list -> (string * string list * string) * token list |
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val type_args: token list -> string list * token list |
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val typ: token list -> string * token list |
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val mixfix: token list -> mixfix * token list |
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val mixfix': token list -> mixfix * token list |
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val opt_infix: token list -> mixfix * token list |
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val opt_infix': token list -> mixfix * token list |
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val opt_mixfix: token list -> mixfix * token list |
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val opt_mixfix': token list -> mixfix * token list |
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val where_: token list -> string * token list |
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val const: token list -> (string * string * mixfix) * token list |
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val params: token list -> (string * string option) list * token list |
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val simple_fixes: token list -> (string * string option) list * token list |
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val fixes: token list -> (string * string option * mixfix) list * token list |
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val for_fixes: token list -> (string * string option * mixfix) list * token list |
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val for_simple_fixes: token list -> (string * string option) list * token list |
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val term: token list -> string * token list |
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val prop: token list -> string * token list |
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val propp: token list -> (string * string list) * token list |
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val termp: token list -> (string * string list) * token list |
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val keyword_sid: token list -> string * token list |
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val args: (string -> bool) -> bool -> token list -> Args.T list * token list |
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val args1: (string -> bool) -> bool -> token list -> Args.T list * token list |
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val arguments: token list -> Args.T list * token list |
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val target: token list -> xstring * token list |
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val opt_target: token list -> xstring option * token list |
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end; |
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structure OuterParse: OUTER_PARSE = |
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struct |
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structure T = OuterLex; |
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type token = T.token; |
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(** error handling **) |
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(* group atomic parsers (no cuts!) *) |
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fun fail_with s = Scan.fail_with |
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(fn [] => s ^ " expected (past end-of-file!)" |
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23789
1993b865c5ac
replaced OuterLex.name_of by more sophisticated OuterLex.text_of;
wenzelm
parents:
22331
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changeset
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| (tok :: _) => |
1993b865c5ac
replaced OuterLex.name_of by more sophisticated OuterLex.text_of;
wenzelm
parents:
22331
diff
changeset
|
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(case T.text_of tok of |
1993b865c5ac
replaced OuterLex.name_of by more sophisticated OuterLex.text_of;
wenzelm
parents:
22331
diff
changeset
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101 |
(txt, "") => s ^ " expected,\nbut " ^ txt ^ T.pos_of tok ^ " was found" |
1993b865c5ac
replaced OuterLex.name_of by more sophisticated OuterLex.text_of;
wenzelm
parents:
22331
diff
changeset
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| (txt1, txt2) => s ^ " expected,\nbut " ^ txt1 ^ T.pos_of tok ^ " was found:\n" ^ txt2)); |
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fun group s scan = scan || fail_with s; |
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(* cut *) |
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8581
5c7ed2af8bfb
!!!! = cut "Corrupted outer syntax in presentation";
wenzelm
parents:
8350
diff
changeset
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fun cut kind scan = |
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let |
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fun get_pos [] = " (past end-of-file!)" |
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| get_pos (tok :: _) = T.pos_of tok; |
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fun err (toks, NONE) = kind ^ get_pos toks |
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| err (toks, SOME msg) = kind ^ get_pos toks ^ ": " ^ msg; |
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in Scan.!! err scan end; |
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fun !!! scan = cut "Outer syntax error" scan; |
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fun !!!! scan = cut "Corrupted outer syntax in presentation" scan; |
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8581
5c7ed2af8bfb
!!!! = cut "Corrupted outer syntax in presentation";
wenzelm
parents:
8350
diff
changeset
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(** basic parsers **) |
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(* utils *) |
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fun triple1 ((x, y), z) = (x, y, z); |
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fun triple2 (x, (y, z)) = (x, y, z); |
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fun triple_swap ((x, y), z) = ((x, z), y); |
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(* tokens *) |
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val not_eof = Scan.one T.not_eof; |
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fun position scan = (Scan.ahead not_eof >> T.position_of) -- scan >> Library.swap; |
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fun kind k = |
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group (T.str_of_kind k) (Scan.one (T.is_kind k) >> T.val_of); |
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val command = kind T.Command; |
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val keyword = kind T.Keyword; |
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val short_ident = kind T.Ident; |
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val long_ident = kind T.LongIdent; |
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val sym_ident = kind T.SymIdent; |
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val term_var = kind T.Var; |
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val type_ident = kind T.TypeIdent; |
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val type_var = kind T.TypeVar; |
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val number = kind T.Nat; |
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val string = kind T.String; |
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val alt_string = kind T.AltString; |
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val verbatim = kind T.Verbatim; |
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val sync = kind T.Sync; |
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val eof = kind T.EOF; |
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fun $$$ x = |
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group (T.str_of_kind T.Keyword ^ " " ^ quote x) |
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(Scan.one (T.keyword_with (equal x)) >> T.val_of); |
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fun reserved x = |
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group ("Reserved identifier " ^ quote x) |
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(Scan.one (T.ident_with (fn y => x = y)) >> T.val_of); |
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val semicolon = $$$ ";"; |
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val minus = sym_ident :-- (fn "-" => Scan.succeed () | _ => Scan.fail) >> #1; |
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parser for underscore (actually a symbolic identifier!);
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parents:
11651
diff
changeset
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val underscore = sym_ident :-- (fn "_" => Scan.succeed () | _ => Scan.fail) >> #1; |
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fun maybe scan = underscore >> K NONE || scan >> SOME; |
11792
311eee3d63b6
parser for underscore (actually a symbolic identifier!);
wenzelm
parents:
11651
diff
changeset
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val nat = number >> (#1 o Library.read_int o Symbol.explode); |
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val tag_name = group "tag name" (short_ident || string); |
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val tags = Scan.repeat ($$$ "%" |-- !!! tag_name); |
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val opt_unit = Scan.optional ($$$ "(" -- $$$ ")" >> (K ())) (); |
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fun opt_keyword s = Scan.optional ($$$ "(" |-- !!! (($$$ s >> K true) --| $$$ ")")) false; |
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val begin = $$$ "begin"; |
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val opt_begin = Scan.optional (begin >> K true) false; |
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(* enumerations *) |
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fun enum1 sep scan = scan -- Scan.repeat ($$$ sep |-- !!! scan) >> op ::; |
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fun enum sep scan = enum1 sep scan || Scan.succeed []; |
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fun list1 scan = enum1 "," scan; |
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fun list scan = enum "," scan; |
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fun and_list1 scan = enum1 "and" scan; |
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fun and_list scan = enum "and" scan; |
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(* names and text *) |
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val name = group "name declaration" (short_ident || sym_ident || string || number); |
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val xname = group "name reference" (short_ident || long_ident || sym_ident || string || number); |
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val text = group "text" (short_ident || long_ident || sym_ident || string || number || verbatim); |
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21858
05f57309170c
avoid conflict with Alice keywords: renamed pack -> implode, unpack -> explode, any -> many, avoided assert;
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diff
changeset
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val path = group "file name/path specification" name >> Path.explode; |
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val parname = Scan.optional ($$$ "(" |-- name --| $$$ ")") ""; |
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(* sorts and arities *) |
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val sort = group "sort" xname; |
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val arity = xname -- ($$$ "::" |-- !!! |
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(Scan.optional ($$$ "(" |-- !!! (list1 sort --| $$$ ")")) [] -- sort)) >> triple2; |
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(* types *) |
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val typ = group "type" |
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(short_ident || long_ident || sym_ident || type_ident || type_var || string || number); |
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val type_args = |
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type_ident >> single || |
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$$$ "(" |-- !!! (list1 type_ident --| $$$ ")") || |
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Scan.succeed []; |
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(* mixfix annotations *) |
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val mfix = string -- |
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!!! (Scan.optional ($$$ "[" |-- !!! (list nat --| $$$ "]")) [] -- |
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Scan.optional nat Syntax.max_pri) >> (Mixfix o triple2); |
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val infx = $$$ "infix" |-- !!! (nat >> Infix || string -- nat >> InfixName); |
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val infxl = $$$ "infixl" |-- !!! (nat >> Infixl || string -- nat >> InfixlName); |
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val infxr = $$$ "infixr" |-- !!! (nat >> Infixr || string -- nat >> InfixrName); |
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val binder = $$$ "binder" |-- |
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!!! (string -- ($$$ "[" |-- nat --| $$$ "]" -- nat || nat >> (fn n => (n, n)))) |
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>> (Binder o triple2); |
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fun annotation guard fix = $$$ "(" |-- guard (fix --| $$$ ")"); |
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fun opt_annotation guard fix = Scan.optional (annotation guard fix) NoSyn; |
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val mixfix = annotation !!! (mfix || binder || infxl || infxr || infx); |
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val mixfix' = annotation I (mfix || binder || infxl || infxr || infx); |
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val opt_infix = opt_annotation !!! (infxl || infxr || infx); |
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val opt_infix' = opt_annotation I (infxl || infxr || infx); |
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val opt_mixfix = opt_annotation !!! (mfix || binder || infxl || infxr || infx); |
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val opt_mixfix' = opt_annotation I (mfix || binder || infxl || infxr || infx); |
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(* fixes *) |
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val where_ = $$$ "where"; |
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val const = name -- ($$$ "::" |-- !!! typ) -- opt_mixfix >> triple1; |
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val params = Scan.repeat1 name -- Scan.option ($$$ "::" |-- !!! typ) |
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>> (fn (xs, T) => map (rpair T) xs); |
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||
19482
9f11af8f7ef9
tuned basic list operators (flat, maps, map_filter);
wenzelm
parents:
19284
diff
changeset
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val simple_fixes = and_list1 params >> flat; |
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val fixes = |
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and_list1 (name -- Scan.option ($$$ "::" |-- typ) -- mixfix >> (single o triple1) || |
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19482
9f11af8f7ef9
tuned basic list operators (flat, maps, map_filter);
wenzelm
parents:
19284
diff
changeset
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261 |
params >> map Syntax.no_syn) >> flat; |
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19845 | 263 |
val for_fixes = Scan.optional ($$$ "for" |-- !!! fixes) []; |
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val for_simple_fixes = Scan.optional ($$$ "for" |-- !!! simple_fixes) []; |
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5826 | 266 |
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(* terms *) |
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val trm = short_ident || long_ident || sym_ident || term_var || number || string; |
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val term = group "term" trm; |
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val prop = group "proposition" trm; |
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(* patterns *) |
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val is_terms = Scan.repeat1 ($$$ "is" |-- term); |
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val is_props = Scan.repeat1 ($$$ "is" |-- prop); |
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val propp = prop -- Scan.optional ($$$ "(" |-- !!! (is_props --| $$$ ")")) []; |
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val termp = term -- Scan.optional ($$$ "(" |-- !!! (is_terms --| $$$ ")")) []; |
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(* arguments *) |
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fun keyword_symid is_symid = Scan.one (T.keyword_with is_symid) >> T.val_of; |
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val keyword_sid = keyword_symid T.is_sid; |
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5826 | 288 |
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fun atom_arg is_symid blk = |
5826 | 290 |
group "argument" |
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(position (short_ident || long_ident || sym_ident || term_var || |
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type_ident || type_var || number) >> Args.mk_ident || |
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position (keyword_symid is_symid) >> Args.mk_keyword || |
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position (string || verbatim) >> Args.mk_string || |
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position alt_string >> Args.mk_alt_string || |
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position (if blk then $$$ "," else Scan.fail) >> Args.mk_keyword); |
5826 | 297 |
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5877 | 298 |
fun paren_args l r scan = position ($$$ l) -- !!! (scan true -- position ($$$ r)) |
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>> (fn (x, (ys, z)) => Args.mk_keyword x :: ys @ [Args.mk_keyword z]); |
5826 | 300 |
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fun args is_symid blk x = Scan.optional (args1 is_symid blk) [] x |
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and args1 is_symid blk x = |
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5826 | 303 |
((Scan.repeat1 |
6983 | 304 |
(Scan.repeat1 (atom_arg is_symid blk) || |
305 |
paren_args "(" ")" (args is_symid) || |
|
19482
9f11af8f7ef9
tuned basic list operators (flat, maps, map_filter);
wenzelm
parents:
19284
diff
changeset
|
306 |
paren_args "[" "]" (args is_symid))) >> flat) x; |
5826 | 307 |
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9131 | 308 |
val arguments = args T.is_sid false; |
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5826 | 310 |
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22119 | 311 |
(* targets *) |
19811 | 312 |
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22119 | 313 |
val target = ($$$ "(" -- $$$ "in") |-- !!! (xname --| $$$ ")"); |
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val opt_target = Scan.option target; |
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12272 | 315 |
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end; |