author | wenzelm |
Tue, 17 May 2005 18:10:42 +0200 | |
changeset 15989 | 80dd2f5780df |
parent 15973 | 5fd94d84470f |
child 16195 | 0eb3c15298cd |
permissions | -rw-r--r-- |
5829 | 1 |
(* Title: Pure/Isar/outer_syntax.ML |
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ID: $Id$ |
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Author: Markus Wenzel, TU Muenchen |
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The global Isabelle/Isar outer syntax. |
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*) |
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signature BASIC_OUTER_SYNTAX = |
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sig |
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structure Isar: |
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sig |
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val main: unit -> unit |
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val loop: unit -> unit |
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val sync_main: unit -> unit |
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val sync_loop: unit -> unit |
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end; |
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end; |
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signature OUTER_SYNTAX = |
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sig |
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include BASIC_OUTER_SYNTAX |
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structure Keyword: |
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sig |
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val control: string |
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val diag: string |
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val thy_begin: string |
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val thy_switch: string |
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val thy_end: string |
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val thy_heading: string |
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val thy_decl: string |
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val thy_script: string |
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val thy_goal: string |
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val qed: string |
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val qed_block: string |
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val qed_global: string |
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val prf_heading: string |
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val prf_goal: string |
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val prf_block: string |
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val prf_open: string |
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val prf_close: string |
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val prf_chain: string |
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val prf_decl: string |
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val prf_asm: string |
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val prf_asm_goal: string |
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val prf_script: string |
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val kinds: string list |
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end |
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type token |
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type parser |
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val command: string -> string -> string -> |
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(token list -> (Toplevel.transition -> Toplevel.transition) * token list) -> parser |
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val markup_command: IsarOutput.markup -> string -> string -> string -> |
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(token list -> (Toplevel.transition -> Toplevel.transition) * token list) -> parser |
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val improper_command: string -> string -> string -> |
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(token list -> (Toplevel.transition -> Toplevel.transition) * token list) -> parser |
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val is_keyword: string -> bool |
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val dest_keywords: unit -> string list |
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val dest_parsers: unit -> (string * string * string * bool) list |
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val print_outer_syntax: unit -> unit |
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val print_commands: Toplevel.transition -> Toplevel.transition |
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val add_keywords: string list -> unit |
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val add_parsers: parser list -> unit |
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val check_text: string * Position.T -> bool -> Toplevel.state -> unit |
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val deps_thy: string -> bool -> Path.T -> string list * Path.T list |
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val load_thy: string -> bool -> bool -> Path.T -> unit |
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val isar: bool -> bool -> unit Toplevel.isar |
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val scan: string -> OuterLex.token list |
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val read: OuterLex.token list -> |
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(string * OuterLex.token list * Toplevel.transition) list |
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end; |
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structure OuterSyntax : OUTER_SYNTAX = |
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struct |
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structure T = OuterLex; |
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structure P = OuterParse; |
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(** outer syntax **) |
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(* command keyword classification *) |
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structure Keyword = |
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struct |
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val control = "control"; |
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val diag = "diag"; |
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val thy_begin = "theory-begin"; |
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val thy_switch = "theory-switch"; |
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val thy_end = "theory-end"; |
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val thy_heading = "theory-heading"; |
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val thy_decl = "theory-decl"; |
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val thy_script = "theory-script"; |
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val thy_goal = "theory-goal"; |
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val qed = "qed"; |
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val qed_block = "qed-block"; |
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val qed_global = "qed-global"; |
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val prf_heading = "proof-heading"; |
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val prf_goal = "proof-goal"; |
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val prf_block = "proof-block"; |
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val prf_open = "proof-open"; |
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val prf_close = "proof-close"; |
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val prf_chain = "proof-chain"; |
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val prf_decl = "proof-decl"; |
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val prf_asm = "proof-asm"; |
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val prf_asm_goal = "proof-asm-goal"; |
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val prf_script = "proof-script"; |
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val kinds = [control, diag, thy_begin, thy_switch, thy_end, thy_heading, thy_decl, thy_script, |
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thy_goal, qed, qed_block, qed_global, prf_heading, prf_goal, prf_block, prf_open, prf_close, |
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prf_chain, prf_decl, prf_asm, prf_asm_goal, prf_script]; |
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end; |
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(* parsers *) |
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type token = T.token; |
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type parser_fn = token list -> (Toplevel.transition -> Toplevel.transition) * token list; |
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datatype parser = |
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Parser of string * (string * string * IsarOutput.markup option) * bool * parser_fn; |
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fun parser int_only markup name comment kind parse = |
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Parser (name, (comment, kind, markup), int_only, parse); |
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(* parse command *) |
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local |
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fun terminate false = Scan.succeed () |
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| terminate true = P.group "end of input" (Scan.option P.sync -- P.semicolon >> K ()); |
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fun trace false parse = parse |
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| trace true parse = Scan.trace parse >> (fn (f, toks) => f o Toplevel.source toks); |
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fun body cmd trc (name, _) = |
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(case cmd name of |
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SOME (int_only, parse) => |
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P.!!! (Scan.prompt (name ^ "# ") (trace trc parse >> pair int_only)) |
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| NONE => sys_error ("no parser for outer syntax command " ^ quote name)); |
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in |
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fun command do_terminate do_trace cmd = |
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P.semicolon >> K NONE || |
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P.sync >> K NONE || |
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(P.position P.command :-- body cmd do_trace) --| terminate do_terminate |
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>> (fn ((name, pos), (int_only, f)) => |
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SOME (Toplevel.empty |> Toplevel.name name |> Toplevel.position pos |> |
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Toplevel.interactive int_only |> f)); |
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end; |
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(** global outer syntax **) |
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local |
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val global_lexicons = ref (Scan.empty_lexicon, Scan.empty_lexicon); |
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val global_parsers = |
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ref (Symtab.empty: (((string * string) * (bool * parser_fn)) * IsarOutput.markup option) |
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Symtab.table); |
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val global_markups = ref ([]: (string * IsarOutput.markup) list); |
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fun change_lexicons f = |
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let val lexs = f (! global_lexicons) in |
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(case (op inter_string) (pairself Scan.dest_lexicon lexs) of |
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[] => global_lexicons := lexs |
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| bads => error ("Clash of outer syntax commands and keywords: " ^ commas_quote bads)) |
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end; |
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fun get_markup (ms, (name, (_, SOME m))) = (name, m) :: ms |
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| get_markup (ms, _) = ms; |
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fun make_markups () = global_markups := Symtab.foldl get_markup ([], ! global_parsers); |
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fun change_parsers f = (Library.change global_parsers f; make_markups ()); |
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in |
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(* access current syntax *) |
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(*Note: the syntax for files is statically determined at the very |
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beginning; for interactive processing it may change dynamically.*) |
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fun get_lexicons () = ! global_lexicons; |
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fun get_parsers () = ! global_parsers; |
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fun get_parser () = Option.map (#2 o #1) o curry Symtab.lookup (! global_parsers); |
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fun is_markup kind name = |
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(case assoc (! global_markups, name) of SOME k => k = kind | NONE => false); |
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fun markup kind = Scan.one (T.is_kind T.Command andf is_markup kind o T.val_of); |
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(* augment syntax *) |
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fun add_keywords keywords = change_lexicons (apfst (fn lex => |
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(Scan.extend_lexicon lex (map Symbol.explode keywords)))); |
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fun add_parser (tab, Parser (name, (comment, kind, markup), int_only, parse)) = |
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(if is_none (Symtab.lookup (tab, name)) then () |
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else warning ("Redefined outer syntax command " ^ quote name); |
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Symtab.update ((name, (((comment, kind), (int_only, parse)), markup)), tab)); |
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fun add_parsers parsers = |
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(change_parsers (fn tab => Library.foldl add_parser (tab, parsers)); |
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change_lexicons (apsnd (fn lex => Scan.extend_lexicon lex |
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(map (fn Parser (name, _, _, _) => Symbol.explode name) parsers)))); |
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end; |
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(* print syntax *) |
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fun is_keyword s = Scan.is_literal (#1 (get_lexicons ())) (Symbol.explode s); |
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fun dest_keywords () = Scan.dest_lexicon (#1 (get_lexicons ())); |
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fun dest_parsers () = |
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map (fn (name, (((cmt, kind), (int_only, _)), _)) => (name, cmt, kind, int_only)) |
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(Symtab.dest (get_parsers ())); |
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fun print_outer_syntax () = |
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let |
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fun pretty_cmd (name, comment, _, _) = |
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Pretty.block [Pretty.str (name ^ ":"), Pretty.brk 2, Pretty.str comment]; |
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val (int_cmds, cmds) = List.partition #4 (dest_parsers ()); |
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in |
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[Pretty.strs ("syntax keywords:" :: map quote (dest_keywords ())), |
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Pretty.big_list "proper commands:" (map pretty_cmd cmds), |
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Pretty.big_list "improper commands (interactive-only):" (map pretty_cmd int_cmds)] |
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|> Pretty.chunks |> Pretty.writeln |
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end; |
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val print_commands = Toplevel.imperative print_outer_syntax; |
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(** toplevel parsing **) |
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(* basic sources *) |
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fun toplevel_source term trc do_recover cmd src = |
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let |
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val no_terminator = |
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Scan.unless P.semicolon (Scan.one (T.not_sync andf T.not_eof)); |
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fun recover x = (Scan.prompt "recover# " (Scan.repeat no_terminator) >> K [NONE]) x; |
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in |
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src |
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|> T.source_proper |
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|> Source.source T.stopper |
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(Scan.bulk (P.$$$ "--" -- P.!!! P.text >> K NONE || P.not_eof >> SOME)) |
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(if do_recover then SOME recover else NONE) |
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|> Source.mapfilter I |
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|> Source.source T.stopper (Scan.bulk (fn xs => P.!!! (command term trc (cmd ())) xs)) |
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(if do_recover then SOME recover else NONE) |
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|> Source.mapfilter I |
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end; |
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(* interactive source of toplevel transformers *) |
5829 | 262 |
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fun isar term no_pos = |
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Source.tty |
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|> Symbol.source true |
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|> T.source true get_lexicons |
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(if no_pos then Position.none else Position.line_name 1 "stdin") |
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|> toplevel_source term false true get_parser; |
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(* scan text, read tokens with trace (for Proof General) *) |
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fun scan str = |
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Source.of_string str |
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|> Symbol.source false |
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|> T.source true get_lexicons Position.none |
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|> Source.exhaust |
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fun read toks = |
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Source.of_list toks |
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|> toplevel_source false true true get_parser |
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|> Source.exhaust |
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|> map (fn tr => (Toplevel.name_of tr, the (Toplevel.source_of tr), tr)); |
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285 |
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(** read theory **) |
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(* check_text *) |
289 |
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290 |
fun check_text s true state = (IsarOutput.eval_antiquote (#1 (get_lexicons ())) state s; ()) |
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291 |
| check_text _ false _ = (); |
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292 |
||
293 |
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(* deps_thy *) |
6199 | 295 |
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fun deps_thy name ml path = |
6199 | 297 |
let |
7735 | 298 |
val src = Source.of_string (File.read path); |
299 |
val pos = Path.position path; |
|
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val (name', parents, files) = ThyHeader.scan (src, pos); |
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val ml_path = ThyLoad.ml_path name; |
15973 | 302 |
val ml_file = if ml andalso is_some (ThyLoad.check_file NONE ml_path) then [ml_path] else []; |
6199 | 303 |
in |
304 |
if name <> name' then |
|
7940 | 305 |
error ("Filename " ^ quote (Path.pack path) ^ |
8078 | 306 |
" does not agree with theory name " ^ quote name') |
6247 | 307 |
else (parents, map (Path.unpack o #1) files @ ml_file) |
6199 | 308 |
end; |
309 |
||
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9132 | 311 |
(* load_thy *) |
6199 | 312 |
|
7746 | 313 |
local |
314 |
||
7940 | 315 |
fun try_ml_file name time = |
6199 | 316 |
let |
317 |
val path = ThyLoad.ml_path name; |
|
7940 | 318 |
val tr = Toplevel.imperative (fn () => ThyInfo.load_file time path); |
6247 | 319 |
val tr_name = if time then "time_use" else "use"; |
6199 | 320 |
in |
15531 | 321 |
if is_none (ThyLoad.check_file NONE path) then () |
9132 | 322 |
else Toplevel.excursion [Toplevel.empty |> Toplevel.name tr_name |> tr] |
6199 | 323 |
end; |
324 |
||
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fun parse_thy src = |
326 |
src |
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327 |
|> toplevel_source false false false (K (get_parser ())) |
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|> Source.exhaust; |
5829 | 329 |
|
6247 | 330 |
fun run_thy name path = |
7683 | 331 |
let |
7735 | 332 |
val pos = Path.position path; |
9132 | 333 |
val text = Library.untabify (explode (File.read path)); |
334 |
val text_src = Source.of_list text; |
|
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fun present_text () = Source.exhaust (Symbol.source false text_src); |
|
7683 | 336 |
in |
7735 | 337 |
Present.init_theory name; |
9132 | 338 |
Present.verbatim_source name present_text; |
339 |
if ThyHeader.is_old (text_src, pos) then (ThySyn.load_thy name text; |
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Present.old_symbol_source name present_text) (*note: text presented twice*) |
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341 |
else |
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let |
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val tok_src = text_src |
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|> Symbol.source false |
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|> T.source false (K (get_lexicons ())) pos |
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|> Source.exhausted; |
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val out = Toplevel.excursion_result |
348 |
(IsarOutput.parse_thy markup (#1 (get_lexicons ())) |
|
349 |
(parse_thy tok_src) tok_src); |
|
350 |
in Present.theory_output name (Buffer.content out) end |
|
6247 | 351 |
end; |
6199 | 352 |
|
7746 | 353 |
in |
354 |
||
6199 | 355 |
fun load_thy name ml time path = |
6247 | 356 |
(if time then |
357 |
timeit (fn () => |
|
358 |
(writeln ("\n**** Starting theory " ^ quote name ^ " ****"); |
|
9036 | 359 |
run_thy name path; |
6247 | 360 |
writeln ("**** Finished theory " ^ quote name ^ " ****\n"))) |
361 |
else run_thy name path; |
|
362 |
Context.context (ThyInfo.get_theory name); |
|
7940 | 363 |
if ml then try_ml_file name time else ()); |
5829 | 364 |
|
7746 | 365 |
end; |
366 |
||
5829 | 367 |
|
368 |
||
369 |
(** the read-eval-print loop **) |
|
370 |
||
5923 | 371 |
(* main loop *) |
372 |
||
7333 | 373 |
fun gen_loop term no_pos = |
374 |
(Context.reset_context (); |
|
15989 | 375 |
Toplevel.loop (isar term no_pos); |
376 |
ml_prompts "ML> " "ML# "); |
|
5829 | 377 |
|
7333 | 378 |
fun gen_main term no_pos = |
5829 | 379 |
(Toplevel.set_state Toplevel.toplevel; |
6199 | 380 |
writeln (Session.welcome ()); |
7333 | 381 |
gen_loop term no_pos); |
6860 | 382 |
|
15830 | 383 |
structure Isar = |
384 |
struct |
|
385 |
fun main () = gen_main false false; |
|
386 |
fun loop () = gen_loop false false; |
|
387 |
fun sync_main () = gen_main true true; |
|
388 |
fun sync_loop () = gen_loop true true; |
|
389 |
end; |
|
5829 | 390 |
|
391 |
||
6373 | 392 |
(*final declarations of this structure!*) |
15531 | 393 |
val command = parser false NONE; |
394 |
val markup_command = parser false o SOME; |
|
395 |
val improper_command = parser true NONE; |
|
6685 | 396 |
|
5829 | 397 |
end; |
398 |
||
6199 | 399 |
(*setup theory syntax dependent operations*) |
400 |
ThyLoad.deps_thy_fn := OuterSyntax.deps_thy; |
|
401 |
ThyLoad.load_thy_fn := OuterSyntax.load_thy; |
|
402 |
structure ThyLoad: THY_LOAD = ThyLoad; |
|
403 |
||
5829 | 404 |
structure BasicOuterSyntax: BASIC_OUTER_SYNTAX = OuterSyntax; |
405 |
open BasicOuterSyntax; |
|
15830 | 406 |
open Isar; |