wenzelm@5826
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(* Title: Pure/Isar/outer_parse.ML
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wenzelm@5826
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ID: $Id$
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wenzelm@5826
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Author: Markus Wenzel, TU Muenchen
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wenzelm@5826
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wenzelm@5826
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Generic parsers for Isabelle/Isar outer syntax.
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wenzelm@5826
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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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wenzelm@5826
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val !!! : (token list -> 'a) -> token list -> 'a
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wenzelm@8581
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val !!!! : (token list -> 'a) -> token list -> 'a
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wenzelm@12047
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val triple1: ('a * 'b) * 'c -> 'a * 'b * 'c
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wenzelm@12047
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val triple2: 'a * ('b * 'c) -> 'a * 'b * 'c
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wenzelm@12047
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val triple_swap: ('a * 'b) * 'c -> ('a * 'c) * 'b
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wenzelm@15703
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val not_eof: token list -> token * token list
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wenzelm@5826
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val position: (token list -> 'a * 'b) -> token list -> ('a * Position.T) * 'b
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wenzelm@7026
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val command: token list -> string * token list
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wenzelm@5826
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val keyword: token list -> string * token list
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wenzelm@5826
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val short_ident: token list -> string * token list
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wenzelm@5826
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val long_ident: token list -> string * token list
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wenzelm@5826
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val sym_ident: token list -> string * token list
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kleing@15963
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val minus: token list -> string * token list
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wenzelm@5826
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val term_var: token list -> string * token list
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wenzelm@5826
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val type_ident: token list -> string * token list
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wenzelm@5826
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val type_var: token list -> string * token list
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wenzelm@5826
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val number: token list -> string * token list
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wenzelm@5826
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val string: token list -> string * token list
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wenzelm@22119
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val alt_string: token list -> string * token list
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wenzelm@5826
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val verbatim: token list -> string * token list
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wenzelm@6860
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val sync: token list -> string * token list
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wenzelm@5826
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val eof: token list -> string * token list
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wenzelm@15703
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val $$$ : string -> token list -> string * token list
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wenzelm@16030
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val reserved : string -> token list -> string * token list
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wenzelm@15703
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val semicolon: token list -> string * token list
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wenzelm@15703
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val underscore: token list -> string * token list
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wenzelm@15703
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val maybe: (token list -> 'a * token list) -> token list -> 'a option * token list
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wenzelm@17070
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val tag_name: token list -> string * token list
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wenzelm@17070
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val tags: token list -> string list * token list
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wenzelm@7930
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val opt_unit: token list -> unit * token list
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wenzelm@14646
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val opt_keyword: string -> token list -> bool * token list
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wenzelm@20983
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val begin: token list -> string * token list
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wenzelm@20961
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val opt_begin: token list -> bool * token list
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wenzelm@5826
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val nat: token list -> int * token list
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wenzelm@5826
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val enum: string -> (token list -> 'a * token list) -> token list -> 'a list * token list
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wenzelm@5826
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val enum1: string -> (token list -> 'a * token list) -> token list -> 'a list * token list
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wenzelm@5826
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val list: (token list -> 'a * token list) -> token list -> 'a list * token list
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wenzelm@5826
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val list1: (token list -> 'a * token list) -> token list -> 'a list * token list
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wenzelm@6013
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val and_list: (token list -> 'a * token list) -> token list -> 'a list * token list
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wenzelm@6013
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val and_list1: (token list -> 'a * token list) -> token list -> 'a list * token list
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wenzelm@5826
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val name: token list -> bstring * token list
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wenzelm@5826
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val xname: token list -> xstring * token list
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wenzelm@5826
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val text: token list -> string * token list
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wenzelm@14949
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val path: token list -> Path.T * token list
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wenzelm@18898
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val parname: token list -> string * token list
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wenzelm@8897
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val sort: token list -> string * token list
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wenzelm@22331
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val arity: token list -> (string * string list * string) * token list
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haftmann@25541
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val multi_arity: token list -> (string list * string list * string) * token list
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wenzelm@5826
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val type_args: token list -> string list * token list
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wenzelm@5826
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val typ: token list -> string * token list
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wenzelm@18669
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val mixfix: token list -> mixfix * token list
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wenzelm@21609
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val mixfix': token list -> mixfix * token list
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wenzelm@18669
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val opt_infix: token list -> mixfix * token list
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wenzelm@21609
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val opt_infix': token list -> mixfix * token list
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wenzelm@18669
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val opt_mixfix: token list -> mixfix * token list
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wenzelm@18669
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val opt_mixfix': token list -> mixfix * token list
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wenzelm@21400
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val where_: token list -> string * token list
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wenzelm@18669
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val const: token list -> (string * string * mixfix) * token list
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wenzelm@22119
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val params: token list -> (string * string option) list * token list
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wenzelm@19845
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val simple_fixes: token list -> (string * string option) list * token list
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wenzelm@18669
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val fixes: token list -> (string * string option * mixfix) list * token list
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wenzelm@19845
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val for_fixes: token list -> (string * string option * mixfix) list * token list
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wenzelm@21371
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val for_simple_fixes: token list -> (string * string option) list * token list
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wenzelm@5826
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val term: token list -> string * token list
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wenzelm@5826
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val prop: token list -> string * token list
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wenzelm@19585
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val propp: token list -> (string * string list) * token list
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wenzelm@6949
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val termp: token list -> (string * string list) * token list
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wenzelm@22119
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val keyword_sid: token list -> string * token list
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wenzelm@22119
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val args: (string -> bool) -> bool -> token list -> Args.T list * token list
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wenzelm@22119
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val args1: (string -> bool) -> bool -> token list -> Args.T list * token list
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wenzelm@9131
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val arguments: token list -> Args.T list * token list
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wenzelm@22119
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val target: token list -> xstring * token list
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wenzelm@22119
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val opt_target: token list -> xstring option * token list
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wenzelm@5826
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end;
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wenzelm@5826
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structure OuterParse: OUTER_PARSE =
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struct
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wenzelm@5826
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wenzelm@9131
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structure T = OuterLex;
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wenzelm@9131
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type token = T.token;
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wenzelm@5826
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wenzelm@5826
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(** error handling **)
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wenzelm@5826
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(* group atomic parsers (no cuts!) *)
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wenzelm@5826
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wenzelm@5826
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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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wenzelm@23789
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| (tok :: _) =>
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wenzelm@23789
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(case T.text_of tok of
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wenzelm@23789
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(txt, "") => s ^ " expected,\nbut " ^ txt ^ T.pos_of tok ^ " was found"
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wenzelm@23789
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| (txt1, txt2) => s ^ " expected,\nbut " ^ txt1 ^ T.pos_of tok ^ " was found:\n" ^ txt2));
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wenzelm@5826
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wenzelm@5826
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fun group s scan = scan || fail_with s;
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wenzelm@5826
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wenzelm@5826
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wenzelm@5877
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(* cut *)
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wenzelm@5826
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wenzelm@8581
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fun cut kind scan =
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wenzelm@5826
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let
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wenzelm@5826
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fun get_pos [] = " (past end-of-file!)"
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wenzelm@9131
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| get_pos (tok :: _) = T.pos_of tok;
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wenzelm@5826
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skalberg@15531
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fun err (toks, NONE) = kind ^ get_pos toks
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skalberg@15531
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| err (toks, SOME msg) = kind ^ get_pos toks ^ ": " ^ msg;
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wenzelm@5826
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in Scan.!! err scan end;
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wenzelm@5826
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wenzelm@8586
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fun !!! scan = cut "Outer syntax error" scan;
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wenzelm@8586
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fun !!!! scan = cut "Corrupted outer syntax in presentation" scan;
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wenzelm@8581
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wenzelm@5826
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wenzelm@5826
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wenzelm@5826
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(** basic parsers **)
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wenzelm@5826
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(* utils *)
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fun triple1 ((x, y), z) = (x, y, z);
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wenzelm@5826
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fun triple2 (x, (y, z)) = (x, y, z);
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wenzelm@6430
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fun triple_swap ((x, y), z) = ((x, z), y);
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wenzelm@5826
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wenzelm@5826
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wenzelm@5826
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(* tokens *)
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val not_eof = Scan.one T.not_eof;
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wenzelm@15703
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wenzelm@15703
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fun position scan = (Scan.ahead not_eof >> T.position_of) -- scan >> Library.swap;
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wenzelm@5826
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wenzelm@5826
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fun kind k =
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wenzelm@9131
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group (T.str_of_kind k) (Scan.one (T.is_kind k) >> T.val_of);
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wenzelm@9131
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val command = kind T.Command;
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wenzelm@9131
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val keyword = kind T.Keyword;
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wenzelm@9131
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val short_ident = kind T.Ident;
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wenzelm@9131
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val long_ident = kind T.LongIdent;
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wenzelm@9131
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val sym_ident = kind T.SymIdent;
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wenzelm@9131
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val term_var = kind T.Var;
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wenzelm@9131
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val type_ident = kind T.TypeIdent;
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wenzelm@9131
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val type_var = kind T.TypeVar;
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wenzelm@9131
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val number = kind T.Nat;
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wenzelm@9131
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val string = kind T.String;
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wenzelm@17165
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val alt_string = kind T.AltString;
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wenzelm@9131
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val verbatim = kind T.Verbatim;
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wenzelm@9131
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val sync = kind T.Sync;
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wenzelm@9131
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val eof = kind T.EOF;
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wenzelm@5826
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wenzelm@5826
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fun $$$ x =
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wenzelm@9131
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group (T.str_of_kind T.Keyword ^ " " ^ quote x)
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wenzelm@9131
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(Scan.one (T.keyword_with (equal x)) >> T.val_of);
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wenzelm@9131
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wenzelm@16030
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fun reserved x =
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wenzelm@16030
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group ("Reserved identifier " ^ quote x)
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wenzelm@24910
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(Scan.one (T.ident_with (fn y => x = y)) >> T.val_of);
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wenzelm@16030
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wenzelm@9131
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val semicolon = $$$ ";";
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wenzelm@5826
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wenzelm@15703
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val minus = sym_ident :-- (fn "-" => Scan.succeed () | _ => Scan.fail) >> #1;
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wenzelm@11792
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val underscore = sym_ident :-- (fn "_" => Scan.succeed () | _ => Scan.fail) >> #1;
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wenzelm@15703
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fun maybe scan = underscore >> K NONE || scan >> SOME;
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wenzelm@11792
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wenzelm@14835
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val nat = number >> (#1 o Library.read_int o Symbol.explode);
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wenzelm@5826
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wenzelm@17070
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val tag_name = group "tag name" (short_ident || string);
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wenzelm@17070
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val tags = Scan.repeat ($$$ "%" |-- !!! tag_name);
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wenzelm@17070
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wenzelm@7930
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val opt_unit = Scan.optional ($$$ "(" -- $$$ ")" >> (K ())) ();
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wenzelm@14646
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fun opt_keyword s = Scan.optional ($$$ "(" |-- !!! (($$$ s >> K true) --| $$$ ")")) false;
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wenzelm@14646
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wenzelm@20983
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val begin = $$$ "begin";
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wenzelm@20983
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val opt_begin = Scan.optional (begin >> K true) false;
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wenzelm@20961
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wenzelm@5826
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wenzelm@5826
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(* enumerations *)
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wenzelm@5826
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wenzelm@6003
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fun enum1 sep scan = scan -- Scan.repeat ($$$ sep |-- !!! scan) >> op ::;
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wenzelm@5826
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fun enum sep scan = enum1 sep scan || Scan.succeed [];
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wenzelm@5826
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wenzelm@5826
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fun list1 scan = enum1 "," scan;
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wenzelm@5826
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fun list scan = enum "," scan;
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wenzelm@5826
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wenzelm@6013
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fun and_list1 scan = enum1 "and" scan;
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wenzelm@6013
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fun and_list scan = enum "and" scan;
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wenzelm@6013
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wenzelm@5826
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wenzelm@5960
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(* names and text *)
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wenzelm@5826
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wenzelm@8146
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val name = group "name declaration" (short_ident || sym_ident || string || number);
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wenzelm@8146
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val xname = group "name reference" (short_ident || long_ident || sym_ident || string || number);
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wenzelm@8146
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val text = group "text" (short_ident || long_ident || sym_ident || string || number || verbatim);
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wenzelm@21858
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val path = group "file name/path specification" name >> Path.explode;
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wenzelm@6553
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wenzelm@18898
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val parname = Scan.optional ($$$ "(" |-- name --| $$$ ")") "";
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wenzelm@18898
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wenzelm@6553
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wenzelm@6372
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(* sorts and arities *)
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wenzelm@5826
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wenzelm@8897
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val sort = group "sort" xname;
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wenzelm@5826
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wenzelm@22331
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val arity = xname -- ($$$ "::" |-- !!!
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wenzelm@22331
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(Scan.optional ($$$ "(" |-- !!! (list1 sort --| $$$ ")")) [] -- sort)) >> triple2;
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wenzelm@5826
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haftmann@25541
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val multi_arity = and_list1 xname -- ($$$ "::" |-- !!!
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haftmann@25541
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(Scan.optional ($$$ "(" |-- !!! (list1 sort --| $$$ ")")) [] -- sort)) >> triple2;
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haftmann@25541
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wenzelm@5826
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wenzelm@5826
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(* types *)
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wenzelm@5826
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wenzelm@8146
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val typ = group "type"
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wenzelm@8146
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(short_ident || long_ident || sym_ident || type_ident || type_var || string || number);
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wenzelm@5826
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220 |
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wenzelm@5826
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val type_args =
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wenzelm@5826
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type_ident >> single ||
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wenzelm@5826
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$$$ "(" |-- !!! (list1 type_ident --| $$$ ")") ||
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wenzelm@5826
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Scan.succeed [];
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wenzelm@5826
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225 |
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wenzelm@5826
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226 |
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wenzelm@5826
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227 |
(* mixfix annotations *)
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wenzelm@5826
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228 |
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wenzelm@18669
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229 |
val mfix = string --
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wenzelm@18669
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230 |
!!! (Scan.optional ($$$ "[" |-- !!! (list nat --| $$$ "]")) [] --
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wenzelm@18669
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231 |
Scan.optional nat Syntax.max_pri) >> (Mixfix o triple2);
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wenzelm@5826
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232 |
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wenzelm@18669
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233 |
val infx = $$$ "infix" |-- !!! (nat >> Infix || string -- nat >> InfixName);
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wenzelm@18669
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val infxl = $$$ "infixl" |-- !!! (nat >> Infixl || string -- nat >> InfixlName);
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wenzelm@18669
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val infxr = $$$ "infixr" |-- !!! (nat >> Infixr || string -- nat >> InfixrName);
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wenzelm@5826
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236 |
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wenzelm@18669
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237 |
val binder = $$$ "binder" |--
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wenzelm@18669
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238 |
!!! (string -- ($$$ "[" |-- nat --| $$$ "]" -- nat || nat >> (fn n => (n, n))))
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wenzelm@18669
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239 |
>> (Binder o triple2);
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wenzelm@5826
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240 |
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wenzelm@18669
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241 |
fun annotation guard fix = $$$ "(" |-- guard (fix --| $$$ ")");
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wenzelm@18669
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242 |
fun opt_annotation guard fix = Scan.optional (annotation guard fix) NoSyn;
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wenzelm@5826
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243 |
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wenzelm@18669
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244 |
val mixfix = annotation !!! (mfix || binder || infxl || infxr || infx);
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wenzelm@21609
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245 |
val mixfix' = annotation I (mfix || binder || infxl || infxr || infx);
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wenzelm@18669
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246 |
val opt_infix = opt_annotation !!! (infxl || infxr || infx);
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wenzelm@21609
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247 |
val opt_infix' = opt_annotation I (infxl || infxr || infx);
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wenzelm@18669
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248 |
val opt_mixfix = opt_annotation !!! (mfix || binder || infxl || infxr || infx);
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wenzelm@18669
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249 |
val opt_mixfix' = opt_annotation I (mfix || binder || infxl || infxr || infx);
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wenzelm@5826
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250 |
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wenzelm@5826
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251 |
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wenzelm@18669
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252 |
(* fixes *)
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wenzelm@5826
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253 |
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wenzelm@21400
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254 |
val where_ = $$$ "where";
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wenzelm@21400
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255 |
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wenzelm@18618
|
256 |
val const = name -- ($$$ "::" |-- !!! typ) -- opt_mixfix >> triple1;
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wenzelm@18669
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257 |
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wenzelm@18669
|
258 |
val params = Scan.repeat1 name -- Scan.option ($$$ "::" |-- !!! typ)
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wenzelm@18669
|
259 |
>> (fn (xs, T) => map (rpair T) xs);
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wenzelm@18669
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260 |
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wenzelm@19482
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261 |
val simple_fixes = and_list1 params >> flat;
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wenzelm@18669
|
262 |
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wenzelm@18669
|
263 |
val fixes =
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wenzelm@18669
|
264 |
and_list1 (name -- Scan.option ($$$ "::" |-- typ) -- mixfix >> (single o triple1) ||
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wenzelm@19482
|
265 |
params >> map Syntax.no_syn) >> flat;
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wenzelm@5826
|
266 |
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wenzelm@19845
|
267 |
val for_fixes = Scan.optional ($$$ "for" |-- !!! fixes) [];
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wenzelm@21371
|
268 |
val for_simple_fixes = Scan.optional ($$$ "for" |-- !!! simple_fixes) [];
|
wenzelm@19845
|
269 |
|
wenzelm@5826
|
270 |
|
wenzelm@5826
|
271 |
(* terms *)
|
wenzelm@5826
|
272 |
|
wenzelm@7477
|
273 |
val trm = short_ident || long_ident || sym_ident || term_var || number || string;
|
wenzelm@5826
|
274 |
|
wenzelm@5826
|
275 |
val term = group "term" trm;
|
wenzelm@5826
|
276 |
val prop = group "proposition" trm;
|
wenzelm@5826
|
277 |
|
wenzelm@5826
|
278 |
|
wenzelm@6949
|
279 |
(* patterns *)
|
wenzelm@6935
|
280 |
|
wenzelm@6949
|
281 |
val is_terms = Scan.repeat1 ($$$ "is" |-- term);
|
wenzelm@6935
|
282 |
val is_props = Scan.repeat1 ($$$ "is" |-- prop);
|
wenzelm@6935
|
283 |
|
wenzelm@19585
|
284 |
val propp = prop -- Scan.optional ($$$ "(" |-- !!! (is_props --| $$$ ")")) [];
|
wenzelm@6949
|
285 |
val termp = term -- Scan.optional ($$$ "(" |-- !!! (is_terms --| $$$ ")")) [];
|
wenzelm@6935
|
286 |
|
wenzelm@6935
|
287 |
|
wenzelm@5826
|
288 |
(* arguments *)
|
wenzelm@5826
|
289 |
|
wenzelm@9131
|
290 |
fun keyword_symid is_symid = Scan.one (T.keyword_with is_symid) >> T.val_of;
|
wenzelm@9131
|
291 |
val keyword_sid = keyword_symid T.is_sid;
|
wenzelm@5826
|
292 |
|
wenzelm@6983
|
293 |
fun atom_arg is_symid blk =
|
wenzelm@5826
|
294 |
group "argument"
|
wenzelm@7477
|
295 |
(position (short_ident || long_ident || sym_ident || term_var ||
|
wenzelm@15703
|
296 |
type_ident || type_var || number) >> Args.mk_ident ||
|
wenzelm@15703
|
297 |
position (keyword_symid is_symid) >> Args.mk_keyword ||
|
wenzelm@15703
|
298 |
position (string || verbatim) >> Args.mk_string ||
|
wenzelm@18037
|
299 |
position alt_string >> Args.mk_alt_string ||
|
wenzelm@15703
|
300 |
position (if blk then $$$ "," else Scan.fail) >> Args.mk_keyword);
|
wenzelm@5826
|
301 |
|
wenzelm@5877
|
302 |
fun paren_args l r scan = position ($$$ l) -- !!! (scan true -- position ($$$ r))
|
wenzelm@15703
|
303 |
>> (fn (x, (ys, z)) => Args.mk_keyword x :: ys @ [Args.mk_keyword z]);
|
wenzelm@5826
|
304 |
|
wenzelm@6983
|
305 |
fun args is_symid blk x = Scan.optional (args1 is_symid blk) [] x
|
wenzelm@6983
|
306 |
and args1 is_symid blk x =
|
wenzelm@5826
|
307 |
((Scan.repeat1
|
wenzelm@6983
|
308 |
(Scan.repeat1 (atom_arg is_symid blk) ||
|
wenzelm@6983
|
309 |
paren_args "(" ")" (args is_symid) ||
|
wenzelm@19482
|
310 |
paren_args "[" "]" (args is_symid))) >> flat) x;
|
wenzelm@5826
|
311 |
|
wenzelm@9131
|
312 |
val arguments = args T.is_sid false;
|
wenzelm@9131
|
313 |
|
wenzelm@5826
|
314 |
|
wenzelm@22119
|
315 |
(* targets *)
|
wenzelm@5826
|
316 |
|
wenzelm@22119
|
317 |
val target = ($$$ "(" -- $$$ "in") |-- !!! (xname --| $$$ ")");
|
wenzelm@22119
|
318 |
val opt_target = Scan.option target;
|
wenzelm@12272
|
319 |
|
wenzelm@12272
|
320 |
end;
|