wenzelm@5822
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(* Title: Pure/Isar/args.ML
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ID: $Id$
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Author: Markus Wenzel, TU Muenchen
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Concrete argument syntax of attributes, methods etc. -- with special
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support for embedded values and static binding.
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*)
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signature ARGS =
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sig
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datatype value =
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Text of string | Typ of typ | Term of term | Fact of thm list | Attribute of attribute
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type T
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val string_of: T -> string
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val mk_ident: string * Position.T -> T
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val mk_string: string * Position.T -> T
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val mk_alt_string: string * Position.T -> T
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val mk_keyword: string * Position.T -> T
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val mk_text: string -> T
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val mk_typ: typ -> T
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val mk_term: term -> T
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val mk_fact: thm list -> T
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val mk_attribute: attribute -> T
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val stopper: T * (T -> bool)
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val not_eof: T -> bool
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type src
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val src: (string * T list) * Position.T -> src
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val dest_src: src -> (string * T list) * Position.T
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val pretty_src: Proof.context -> src -> Pretty.T
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val map_name: (string -> string) -> src -> src
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val morph_values: morphism -> src -> src
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val maxidx_values: src -> int -> int
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val assignable: src -> src
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val assign: value option -> T -> unit
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val closure: src -> src
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val position: (T list -> 'a * 'b) -> T list -> ('a * Position.T) * 'b
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val !!! : (T list -> 'a) -> T list -> 'a
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val $$$ : string -> T list -> string * T list
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val add: T list -> string * T list
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val del: T list -> string * T list
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val colon: T list -> string * T list
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val query: T list -> string * T list
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val bang: T list -> string * T list
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val query_colon: T list -> string * T list
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val bang_colon: T list -> string * T list
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val parens: (T list -> 'a * T list) -> T list -> 'a * T list
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val bracks: (T list -> 'a * T list) -> T list -> 'a * T list
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val mode: string -> 'a * T list -> bool * ('a * T list)
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val maybe: (T list -> 'a * T list) -> T list -> 'a option * T list
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val name: T list -> string * T list
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val alt_name: T list -> string * T list
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val symbol: T list -> string * T list
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val liberal_name: T list -> string * T list
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val nat: T list -> int * T list
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val int: T list -> int * T list
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val var: T list -> indexname * T list
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val list: (T list -> 'a * T list) -> T list -> 'a list * T list
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val list1: (T list -> 'a * T list) -> T list -> 'a list * T list
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val enum: string -> ('a * T list -> 'b * ('a * T list)) -> 'a * T list -> 'b list * ('a * T list)
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val enum1: string -> ('a * T list -> 'b * ('a * T list)) -> 'a * T list -> 'b list * ('a * T list)
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val and_list: ('a * T list -> 'b * ('a * T list)) -> 'a * T list -> 'b list * ('a * T list)
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val and_list1: ('a * T list -> 'b * ('a * T list)) -> 'a * T list -> 'b list * ('a * T list)
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val ahead: T list -> T * T list
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val internal_text: T list -> string * T list
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val internal_typ: T list -> typ * T list
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val internal_term: T list -> term * T list
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val internal_fact: T list -> thm list * T list
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val internal_attribute: T list -> attribute * T list
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val named_text: (string -> string) -> T list -> string * T list
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val named_typ: (string -> typ) -> T list -> typ * T list
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val named_term: (string -> term) -> T list -> term * T list
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val named_fact: (string -> thm list) -> T list -> thm list * T list
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val typ_abbrev: Context.generic * T list -> typ * (Context.generic * T list)
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val typ: Context.generic * T list -> typ * (Context.generic * T list)
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val term: Context.generic * T list -> term * (Context.generic * T list)
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val prop: Context.generic * T list -> term * (Context.generic * T list)
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val tyname: Context.generic * T list -> string * (Context.generic * T list)
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val const: Context.generic * T list -> string * (Context.generic * T list)
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val thm_sel: T list -> PureThy.interval list * T list
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val bang_facts: Context.generic * T list -> thm list * (Context.generic * T list)
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val goal_spec: ((int -> tactic) -> tactic) -> ('a * T list)
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-> ((int -> tactic) -> tactic) * ('a * T list)
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val attribs: (string -> string) -> T list -> src list * T list
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val opt_attribs: (string -> string) -> T list -> src list * T list
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val syntax: string -> ('b * T list -> 'a * ('b * T list)) -> src -> 'b -> 'b * 'a
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val context_syntax: string -> (Context.generic * T list -> 'a * (Context.generic * T list)) ->
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src -> Proof.context -> Proof.context * 'a
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end;
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structure Args: ARGS =
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struct
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(** datatype T **)
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(*An argument token is a symbol (with raw string value), together with
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an optional assigned internal value. Note that an assignable ref
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designates an intermediate state of internalization -- it is NOT
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meant to persist.*)
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datatype kind = Ident | String | AltString | Keyword | EOF;
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type symbol = kind * string * Position.T;
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datatype value =
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Text of string |
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Typ of typ |
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Term of term |
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Fact of thm list |
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Attribute of attribute;
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datatype slot =
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Empty |
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Value of value option |
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Assignable of value option ref;
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datatype T = Arg of symbol * slot;
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fun string_of (Arg ((Ident, x, _), _)) = x
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| string_of (Arg ((String, x, _), _)) = quote x
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| string_of (Arg ((AltString, x, _), _)) = enclose "`" "`" x
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| string_of (Arg ((Keyword, x, _), _)) = x
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| string_of (Arg ((EOF, _, _), _)) = "";
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fun sym_of (Arg ((_, x, _), _)) = x;
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fun pos_of (Arg ((_, _, pos), _)) = pos;
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(* basic constructors *)
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fun mk_symbol k (x, p) = Arg ((k, x, p), Empty);
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fun mk_value k v = Arg ((Keyword, k, Position.none), Value (SOME v));
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val mk_ident = mk_symbol Ident;
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val mk_string = mk_symbol String;
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val mk_alt_string = mk_symbol AltString;
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val mk_keyword = mk_symbol Keyword;
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val mk_text = mk_value "<text>" o Text;
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val mk_typ = mk_value "<typ>" o Typ;
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val mk_term = mk_value "<term>" o Term;
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val mk_fact = mk_value "<fact>" o Fact;
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val mk_attribute = mk_value "<attribute>" o Attribute;
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(* eof *)
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val eof = mk_symbol EOF ("", Position.none);
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fun is_eof (Arg ((EOF, _, _), _)) = true
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| is_eof _ = false;
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val stopper = (eof, is_eof);
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val not_eof = not o is_eof;
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(** datatype src **)
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datatype src = Src of (string * T list) * Position.T;
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val src = Src;
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fun dest_src (Src src) = src;
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fun pretty_src ctxt src =
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let
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fun prt (Arg (_, Value (SOME (Text s)))) = Pretty.str (quote s)
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| prt (Arg (_, Value (SOME (Typ T)))) = ProofContext.pretty_typ ctxt T
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| prt (Arg (_, Value (SOME (Term t)))) = ProofContext.pretty_term ctxt t
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| prt (Arg (_, Value (SOME (Fact ths)))) = ProofContext.pretty_thms ctxt ths
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| prt arg = Pretty.str (string_of arg);
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val (s, args) = #1 (dest_src src);
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in Pretty.block (Pretty.breaks (Pretty.str s :: map prt args)) end;
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fun map_name f (Src ((s, args), pos)) = Src ((f s, args), pos);
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fun map_args f (Src ((s, args), pos)) = Src ((s, map f args), pos);
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(* values *)
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fun map_value f (Arg (s, Value (SOME v))) = Arg (s, Value (SOME (f v)))
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| map_value _ arg = arg;
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wenzelm@21480
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fun morph_values phi = map_args (map_value
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(fn Text s => Text s
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wenzelm@21480
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| Typ T => Typ (Morphism.typ phi T)
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wenzelm@21480
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| Term t => Term (Morphism.term phi t)
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wenzelm@21480
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| Fact ths => Fact (map (Morphism.thm phi) ths)
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| Attribute att => Attribute att));
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wenzelm@20263
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fun maxidx_values (Src ((_, args), _)) = args |> fold
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(fn (Arg (_, Value (SOME (Typ T)))) => Term.maxidx_typ T
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wenzelm@20263
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| (Arg (_, Value (SOME (Term t)))) => Term.maxidx_term t
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wenzelm@20263
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| (Arg (_, Value (SOME (Fact ths)))) => fold Thm.maxidx_thm ths
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| _ => I);
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(* static binding *)
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(*1st stage: make empty slots assignable*)
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val assignable =
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map_args (fn Arg (s, Empty) => Arg (s, Assignable (ref NONE)) | arg => arg);
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(*2nd stage: assign values as side-effect of scanning*)
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fun assign v (arg as Arg (_, Assignable r)) = r := v
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| assign _ _ = ();
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val ahead = Scan.ahead (Scan.one not_eof);
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fun touch scan = ahead -- scan >> (fn (arg, y) => (assign NONE arg; y));
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(*3rd stage: static closure of final values*)
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val closure =
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map_args (fn Arg (s, Assignable (ref v)) => Arg (s, Value v) | arg => arg);
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(** scanners **)
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(* position *)
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fun position scan =
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(Scan.ahead (Scan.one not_eof) >> pos_of) -- scan >> Library.swap;
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(* cut *)
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fun !!! scan =
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let
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fun get_pos [] = " (past end-of-text!)"
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| get_pos (arg :: _) = Position.str_of (pos_of arg);
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wenzelm@5878
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skalberg@15531
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fun err (args, NONE) = "Argument syntax error" ^ get_pos args
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skalberg@15531
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| err (args, SOME msg) = "Argument syntax error" ^ get_pos args ^ ": " ^ msg;
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in Scan.!! err scan end;
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wenzelm@5822
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(* basic *)
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fun some_ident f =
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touch (Scan.some (fn Arg ((Ident, x, _), _) => f x | _ => NONE));
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wenzelm@15703
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val named =
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wenzelm@15703
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touch (Scan.one (fn Arg ((k, _, _), _) => k = Ident orelse k = String));
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wenzelm@15703
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wenzelm@18037
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val alt_string =
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wenzelm@18037
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touch (Scan.one (fn Arg ((k, _, _), _) => k = AltString));
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wenzelm@18037
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wenzelm@15703
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val symbolic =
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wenzelm@15703
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touch (Scan.one (fn Arg ((k, x, _), _) => k = Keyword andalso OuterLex.is_sid x));
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fun &&& x =
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touch (Scan.one (fn Arg ((k, y, _), _) => k = Keyword andalso x = y));
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wenzelm@15703
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fun $$$ x =
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wenzelm@16140
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touch (Scan.one (fn Arg ((k, y, _), _) => (k = Ident orelse k = Keyword) andalso x = y))
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wenzelm@16140
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>> sym_of;
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val add = $$$ "add";
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val del = $$$ "del";
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val colon = $$$ ":";
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wenzelm@10035
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val query = $$$ "?";
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wenzelm@10035
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val bang = $$$ "!";
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wenzelm@20111
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val query_colon = $$$ "?" ^^ $$$ ":";
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wenzelm@20111
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val bang_colon = $$$ "!" ^^ $$$ ":";
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wenzelm@10035
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wenzelm@8803
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fun parens scan = $$$ "(" |-- scan --| $$$ ")";
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wenzelm@10150
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fun bracks scan = $$$ "[" |-- scan --| $$$ "]";
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wenzelm@15703
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fun mode s = Scan.lift (Scan.optional (parens ($$$ s) >> K true) false);
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fun maybe scan = $$$ "_" >> K NONE || scan >> SOME;
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wenzelm@8803
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val name = named >> sym_of;
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wenzelm@18037
|
271 |
val alt_name = alt_string >> sym_of;
|
wenzelm@16140
|
272 |
val symbol = symbolic >> sym_of;
|
wenzelm@17064
|
273 |
val liberal_name = symbol || name;
|
wenzelm@5822
|
274 |
|
wenzelm@15703
|
275 |
val nat = some_ident Syntax.read_nat;
|
wenzelm@9538
|
276 |
val int = Scan.optional ($$$ "-" >> K ~1) 1 -- nat >> op *;
|
wenzelm@15987
|
277 |
val var = some_ident Syntax.read_variable;
|
wenzelm@14563
|
278 |
|
wenzelm@5822
|
279 |
|
wenzelm@5878
|
280 |
(* enumerations *)
|
wenzelm@5822
|
281 |
|
wenzelm@15703
|
282 |
fun list1 scan = scan -- Scan.repeat ($$$ "," |-- scan) >> op ::;
|
wenzelm@15703
|
283 |
fun list scan = list1 scan || Scan.succeed [];
|
wenzelm@15703
|
284 |
|
wenzelm@6447
|
285 |
fun enum1 sep scan = scan -- Scan.repeat (Scan.lift ($$$ sep) |-- scan) >> op ::;
|
wenzelm@5878
|
286 |
fun enum sep scan = enum1 sep scan || Scan.succeed [];
|
wenzelm@5878
|
287 |
|
wenzelm@6447
|
288 |
fun and_list1 scan = enum1 "and" scan;
|
wenzelm@6447
|
289 |
fun and_list scan = enum "and" scan;
|
wenzelm@5878
|
290 |
|
wenzelm@5878
|
291 |
|
wenzelm@15703
|
292 |
(* values *)
|
wenzelm@15703
|
293 |
|
wenzelm@15703
|
294 |
fun value dest = Scan.some (*no touch here*)
|
wenzelm@15703
|
295 |
(fn Arg (_, Value (SOME v)) => (SOME (dest v) handle Match => NONE)
|
wenzelm@15703
|
296 |
| Arg _ => NONE);
|
wenzelm@15703
|
297 |
|
wenzelm@15703
|
298 |
fun evaluate mk eval arg =
|
wenzelm@15703
|
299 |
let val x = eval (sym_of arg) in (assign (SOME (mk x)) arg; x) end;
|
wenzelm@15703
|
300 |
|
wenzelm@21496
|
301 |
val internal_text = value (fn Text s => s);
|
wenzelm@15703
|
302 |
val internal_typ = value (fn Typ T => T);
|
wenzelm@15703
|
303 |
val internal_term = value (fn Term t => t);
|
wenzelm@15703
|
304 |
val internal_fact = value (fn Fact ths => ths);
|
wenzelm@15703
|
305 |
val internal_attribute = value (fn Attribute att => att);
|
wenzelm@15703
|
306 |
|
wenzelm@21496
|
307 |
fun named_text intern = internal_text || named >> evaluate Text intern;
|
wenzelm@15703
|
308 |
fun named_typ readT = internal_typ || named >> evaluate Typ readT;
|
wenzelm@15703
|
309 |
fun named_term read = internal_term || named >> evaluate Term read;
|
wenzelm@18037
|
310 |
fun named_fact get = internal_fact || (alt_string || named) >> evaluate Fact get;
|
wenzelm@15703
|
311 |
|
wenzelm@15703
|
312 |
|
wenzelm@5878
|
313 |
(* terms and types *)
|
wenzelm@5878
|
314 |
|
wenzelm@18635
|
315 |
val typ_abbrev = Scan.peek (named_typ o ProofContext.read_typ_abbrev o Context.proof_of);
|
wenzelm@18635
|
316 |
val typ = Scan.peek (named_typ o ProofContext.read_typ o Context.proof_of);
|
wenzelm@18635
|
317 |
val term = Scan.peek (named_term o ProofContext.read_term o Context.proof_of);
|
wenzelm@18635
|
318 |
val prop = Scan.peek (named_term o ProofContext.read_prop o Context.proof_of);
|
wenzelm@18635
|
319 |
|
wenzelm@5878
|
320 |
|
wenzelm@15703
|
321 |
(* type and constant names *)
|
wenzelm@5878
|
322 |
|
wenzelm@18998
|
323 |
val tyname = Scan.peek (named_typ o Context.cases Sign.read_tyname ProofContext.read_tyname)
|
wenzelm@18998
|
324 |
>> (fn Type (c, _) => c | TFree (a, _) => a | _ => "");
|
wenzelm@7553
|
325 |
|
wenzelm@18998
|
326 |
val const = Scan.peek (named_term o Context.cases Sign.read_const ProofContext.read_const)
|
wenzelm@18998
|
327 |
>> (fn Const (c, _) => c | Free (x, _) => x | _ => "");
|
wenzelm@15703
|
328 |
|
wenzelm@15703
|
329 |
|
wenzelm@15703
|
330 |
(* misc *)
|
wenzelm@15703
|
331 |
|
wenzelm@15703
|
332 |
val thm_sel = parens (list1
|
wenzelm@15703
|
333 |
(nat --| $$$ "-" -- nat >> PureThy.FromTo ||
|
wenzelm@15703
|
334 |
nat --| $$$ "-" >> PureThy.From ||
|
wenzelm@15703
|
335 |
nat >> PureThy.Single));
|
wenzelm@15703
|
336 |
|
wenzelm@18998
|
337 |
val bang_facts = Scan.peek (fn context =>
|
wenzelm@20224
|
338 |
$$$ "!" >> K (Assumption.prems_of (Context.proof_of context)) || Scan.succeed []);
|
wenzelm@7553
|
339 |
|
wenzelm@7553
|
340 |
|
wenzelm@8536
|
341 |
(* goal specification *)
|
wenzelm@8233
|
342 |
|
wenzelm@8536
|
343 |
(* range *)
|
wenzelm@8536
|
344 |
|
wenzelm@8536
|
345 |
val from_to =
|
wenzelm@15703
|
346 |
nat -- ($$$ "-" |-- nat) >> (fn (i, j) => fn tac => Seq.INTERVAL tac i j) ||
|
wenzelm@15703
|
347 |
nat --| $$$ "-" >> (fn i => fn tac => fn st => Seq.INTERVAL tac i (Thm.nprems_of st) st) ||
|
wenzelm@8549
|
348 |
nat >> (fn i => fn tac => tac i) ||
|
wenzelm@15703
|
349 |
$$$ "!" >> K ALLGOALS;
|
wenzelm@8536
|
350 |
|
wenzelm@15703
|
351 |
val goal = $$$ "[" |-- !!! (from_to --| $$$ "]");
|
wenzelm@8536
|
352 |
fun goal_spec def = Scan.lift (Scan.optional goal def);
|
wenzelm@8233
|
353 |
|
wenzelm@8233
|
354 |
|
wenzelm@15703
|
355 |
|
wenzelm@15703
|
356 |
(* attribs *)
|
wenzelm@15703
|
357 |
|
wenzelm@15703
|
358 |
local
|
wenzelm@5878
|
359 |
|
wenzelm@20664
|
360 |
val exclude = member (op =) (explode "()[],");
|
wenzelm@5878
|
361 |
|
wenzelm@15703
|
362 |
fun atomic blk = touch (Scan.one (fn Arg ((k, x, _), _) =>
|
wenzelm@20664
|
363 |
k <> Keyword orelse not (exclude x) orelse blk andalso x = ","));
|
wenzelm@5878
|
364 |
|
wenzelm@5878
|
365 |
fun args blk x = Scan.optional (args1 blk) [] x
|
wenzelm@5878
|
366 |
and args1 blk x =
|
wenzelm@5878
|
367 |
((Scan.repeat1
|
wenzelm@15703
|
368 |
(Scan.repeat1 (atomic blk) ||
|
wenzelm@15703
|
369 |
argsp "(" ")" ||
|
wenzelm@19482
|
370 |
argsp "[" "]")) >> flat) x
|
wenzelm@15703
|
371 |
and argsp l r x =
|
wenzelm@15703
|
372 |
(Scan.trace (&&& l -- !!! (args true -- &&& r)) >> #2) x;
|
wenzelm@5822
|
373 |
|
wenzelm@15703
|
374 |
in
|
wenzelm@5822
|
375 |
|
wenzelm@15703
|
376 |
fun attribs intern =
|
wenzelm@15703
|
377 |
let
|
wenzelm@21496
|
378 |
val attrib_name = internal_text || (symbolic || named) >> evaluate Text intern;
|
wenzelm@15703
|
379 |
val attrib = position (attrib_name -- !!! (args false)) >> src;
|
wenzelm@15703
|
380 |
in $$$ "[" |-- !!! (list attrib --| $$$ "]") end;
|
wenzelm@5822
|
381 |
|
wenzelm@15703
|
382 |
fun opt_attribs intern = Scan.optional (attribs intern) [];
|
wenzelm@5822
|
383 |
|
wenzelm@15703
|
384 |
end;
|
wenzelm@5822
|
385 |
|
wenzelm@5878
|
386 |
|
wenzelm@15703
|
387 |
(* syntax interface *)
|
wenzelm@5822
|
388 |
|
wenzelm@8282
|
389 |
fun syntax kind scan (src as Src ((s, args), pos)) st =
|
wenzelm@9901
|
390 |
(case Scan.error (Scan.finite' stopper (Scan.option scan)) (st, args) of
|
skalberg@15531
|
391 |
(SOME x, (st', [])) => (st', x)
|
wenzelm@15703
|
392 |
| (_, (_, args')) =>
|
wenzelm@15703
|
393 |
error (kind ^ " " ^ quote s ^ Position.str_of pos ^ ": bad arguments\n " ^
|
wenzelm@15703
|
394 |
space_implode " " (map string_of args')));
|
wenzelm@5878
|
395 |
|
wenzelm@18998
|
396 |
fun context_syntax kind scan src = apfst Context.the_proof o syntax kind scan src o Context.Proof;
|
wenzelm@18998
|
397 |
|
wenzelm@5822
|
398 |
end;
|