(*  Title:      Pure/General/markup.ML

     Author:     Makarius

 Common markup elements.

 *)

 signature MARKUP =

 sig

   val parse_int: string -> int

   val print_int: int -> string

   type T = string * Properties.T

   val empty: T

   val is_empty: T -> bool

   val properties: Properties.T -> T -> T

   val nameN: string

   val name: string -> T -> T

   val kindN: string

   val bindingN: string val binding: T

   val entityN: string val entity: string -> string -> T

   val get_entity_kind: T -> string option

   val defN: string

   val refN: string

   val lineN: string

   val columnN: string

   val offsetN: string

   val end_offsetN: string

   val fileN: string

   val idN: string

   val position_properties': string list

   val position_properties: string list

   val positionN: string val position: T

   val pathN: string val path: string -> T

   val indentN: string

   val blockN: string val block: int -> T

   val widthN: string

   val breakN: string val break: int -> T

   val fbreakN: string val fbreak: T

   val hiddenN: string val hidden: T

   val classN: string

   val typeN: string

   val constantN: string

   val fixedN: string val fixed: string -> T

   val dynamic_factN: string val dynamic_fact: string -> T

   val tfreeN: string val tfree: T

   val tvarN: string val tvar: T

   val freeN: string val free: T

   val skolemN: string val skolem: T

   val boundN: string val bound: T

   val varN: string val var: T

   val numeralN: string val numeral: T

   val literalN: string val literal: T

   val delimiterN: string val delimiter: T

   val inner_stringN: string val inner_string: T

   val inner_commentN: string val inner_comment: T

   val token_rangeN: string val token_range: T

   val sortN: string val sort: T

   val typN: string val typ: T

   val termN: string val term: T

   val propN: string val prop: T

   val ML_keywordN: string val ML_keyword: T

   val ML_delimiterN: string val ML_delimiter: T

   val ML_identN: string val ML_ident: T

   val ML_tvarN: string val ML_tvar: T

   val ML_numeralN: string val ML_numeral: T

   val ML_charN: string val ML_char: T

   val ML_stringN: string val ML_string: T

   val ML_commentN: string val ML_comment: T

   val ML_malformedN: string val ML_malformed: T

   val ML_defN: string

   val ML_openN: string

   val ML_structN: string

   val ML_typingN: string val ML_typing: T

   val ML_sourceN: string val ML_source: T

   val doc_sourceN: string val doc_source: T

   val antiqN: string val antiq: T

   val ML_antiquotationN: string

   val doc_antiquotationN: string

   val doc_antiquotation_optionN: string

   val keyword_declN: string val keyword_decl: string -> T

   val command_declN: string val command_decl: string -> string -> T

   val keywordN: string val keyword: T

   val operatorN: string val operator: T

   val commandN: string val command: T

   val identN: string val ident: T

   val stringN: string val string: T

   val altstringN: string val altstring: T

   val verbatimN: string val verbatim: T

   val commentN: string val comment: T

   val controlN: string val control: T

   val malformedN: string val malformed: T

   val tokenN: string val token: Properties.T -> T

   val command_spanN: string val command_span: string -> T

   val ignored_spanN: string val ignored_span: T

   val malformed_spanN: string val malformed_span: T

   val elapsedN: string

   val cpuN: string

   val gcN: string

   val timingN: string val timing: Timing.timing -> T

   val subgoalsN: string

   val proof_stateN: string val proof_state: int -> T

   val stateN: string val state: T

   val subgoalN: string val subgoal: T

   val sendbackN: string val sendback: T

   val hiliteN: string val hilite: T

   val taskN: string

   val forkedN: string val forked: T

   val joinedN: string val joined: T

   val failedN: string val failed: T

   val finishedN: string val finished: T

   val versionN: string

   val execN: string

   val assignN: string val assign: int -> T

   val editN: string val edit: int -> int -> T

   val serialN: string

   val promptN: string val prompt: T

   val readyN: string val ready: T

   val reportN: string val report: T

   val no_reportN: string val no_report: T

   val badN: string val bad: T

   val no_output: Output.output * Output.output

   val default_output: T -> Output.output * Output.output

   val add_mode: string -> (T -> Output.output * Output.output) -> unit

   val output: T -> Output.output * Output.output

   val enclose: T -> Output.output -> Output.output

   val markup: T -> string -> string

 end;

 structure Markup: MARKUP =

 struct

 (** markup elements **)

 (* integers *)

 fun parse_int s =

   (case Int.fromString s of

     SOME i => i

   | NONE => raise Fail ("Bad integer: " ^ quote s));

 val print_int = signed_string_of_int;

 (* basic markup *)

 type T = string * Properties.T;

 val empty = ("", []);

 fun is_empty ("", _) = true

   | is_empty _ = false;

 fun properties more_props ((elem, props): T) =

   (elem, fold_rev Properties.put more_props props);

 fun markup_elem elem = (elem, (elem, []): T);

 fun markup_string elem prop = (elem, fn s => (elem, [(prop, s)]): T);

 fun markup_int elem prop = (elem, fn i => (elem, [(prop, print_int i)]): T);

 (* misc properties *)

 val nameN = "name";

 fun name a = properties [(nameN, a)];

 val kindN = "kind";

 (* formal entities *)

 val (bindingN, binding) = markup_elem "binding";

 val entityN = "entity";

 fun entity kind name = (entityN, [(nameN, name), (kindN, kind)]);

 fun get_entity_kind (name, props) =

   if name = entityN then AList.lookup (op =) props kindN

   else NONE;

 val defN = "def";

 val refN = "ref";

 (* position *)

 val lineN = "line";

 val columnN = "column";

 val offsetN = "offset";

 val end_offsetN = "end_offset";

 val fileN = "file";

 val idN = "id";

 val position_properties' = [fileN, idN];

 val position_properties = [lineN, columnN, offsetN, end_offsetN] @ position_properties';

 val (positionN, position) = markup_elem "position";

 (* path *)

 val (pathN, path) = markup_string "path" nameN;

 (* pretty printing *)

 val indentN = "indent";

 val (blockN, block) = markup_int "block" indentN;

 val widthN = "width";

 val (breakN, break) = markup_int "break" widthN;

 val (fbreakN, fbreak) = markup_elem "fbreak";

 (* hidden text *)

 val (hiddenN, hidden) = markup_elem "hidden";

 (* logical entities *)

 val classN = "class";

 val typeN = "type";

 val constantN = "constant";

 val (fixedN, fixed) = markup_string "fixed" nameN;

 val (dynamic_factN, dynamic_fact) = markup_string "dynamic_fact" nameN;

 (* inner syntax *)

 val (tfreeN, tfree) = markup_elem "tfree";

 val (tvarN, tvar) = markup_elem "tvar";

 val (freeN, free) = markup_elem "free";

 val (skolemN, skolem) = markup_elem "skolem";

 val (boundN, bound) = markup_elem "bound";

 val (varN, var) = markup_elem "var";

 val (numeralN, numeral) = markup_elem "numeral";

 val (literalN, literal) = markup_elem "literal";

 val (delimiterN, delimiter) = markup_elem "delimiter";

 val (inner_stringN, inner_string) = markup_elem "inner_string";

 val (inner_commentN, inner_comment) = markup_elem "inner_comment";

 val (token_rangeN, token_range) = markup_elem "token_range";

 val (sortN, sort) = markup_elem "sort";

 val (typN, typ) = markup_elem "typ";

 val (termN, term) = markup_elem "term";

 val (propN, prop) = markup_elem "prop";

 (* ML syntax *)

 val (ML_keywordN, ML_keyword) = markup_elem "ML_keyword";

 val (ML_delimiterN, ML_delimiter) = markup_elem "ML_delimiter";

 val (ML_identN, ML_ident) = markup_elem "ML_ident";

 val (ML_tvarN, ML_tvar) = markup_elem "ML_tvar";

 val (ML_numeralN, ML_numeral) = markup_elem "ML_numeral";

 val (ML_charN, ML_char) = markup_elem "ML_char";

 val (ML_stringN, ML_string) = markup_elem "ML_string";

 val (ML_commentN, ML_comment) = markup_elem "ML_comment";

 val (ML_malformedN, ML_malformed) = markup_elem "ML_malformed";

 val ML_defN = "ML_def";

 val ML_openN = "ML_open";

 val ML_structN = "ML_struct";

 val (ML_typingN, ML_typing) = markup_elem "ML_typing";

 (* embedded source text *)

 val (ML_sourceN, ML_source) = markup_elem "ML_source";

 val (doc_sourceN, doc_source) = markup_elem "doc_source";

 val (antiqN, antiq) = markup_elem "antiq";

 val ML_antiquotationN = "ML antiquotation";

 val doc_antiquotationN = "document antiquotation";

 val doc_antiquotation_optionN = "document antiquotation option";

 (* outer syntax *)

 val (keyword_declN, keyword_decl) = markup_string "keyword_decl" nameN;

 val command_declN = "command_decl";

 fun command_decl name kind : T = (command_declN, [(nameN, name), (kindN, kind)]);

 val (keywordN, keyword) = markup_elem "keyword";

 val (operatorN, operator) = markup_elem "operator";

 val (commandN, command) = markup_elem "command";

 val (identN, ident) = markup_elem "ident";

 val (stringN, string) = markup_elem "string";

 val (altstringN, altstring) = markup_elem "altstring";

 val (verbatimN, verbatim) = markup_elem "verbatim";

 val (commentN, comment) = markup_elem "comment";

 val (controlN, control) = markup_elem "control";

 val (malformedN, malformed) = markup_elem "malformed";

 val tokenN = "token";

 fun token props = (tokenN, props);

 val (command_spanN, command_span) = markup_string "command_span" nameN;

 val (ignored_spanN, ignored_span) = markup_elem "ignored_span";

 val (malformed_spanN, malformed_span) = markup_elem "malformed_span";

 (* timing *)

 val timingN = "timing";

 val elapsedN = "elapsed";

 val cpuN = "cpu";

 val gcN = "gc";

 fun timing {elapsed, cpu, gc} =

   (timingN,

    [(elapsedN, Time.toString elapsed),

     (cpuN, Time.toString cpu),

     (gcN, Time.toString gc)]);

 (* toplevel *)

 val subgoalsN = "subgoals";

 val (proof_stateN, proof_state) = markup_int "proof_state" subgoalsN;

 val (stateN, state) = markup_elem "state";

 val (subgoalN, subgoal) = markup_elem "subgoal";

 val (sendbackN, sendback) = markup_elem "sendback";

 val (hiliteN, hilite) = markup_elem "hilite";

 (* command status *)

 val taskN = "task";

 val (forkedN, forked) = markup_elem "forked";

 val (joinedN, joined) = markup_elem "joined";

 val (failedN, failed) = markup_elem "failed";

 val (finishedN, finished) = markup_elem "finished";

 (* interactive documents *)

 val versionN = "version";

 val execN = "exec";

 val (assignN, assign) = markup_int "assign" versionN;

 val editN = "edit";

 fun edit cmd_id exec_id : T = (editN, [(idN, print_int cmd_id), (execN, print_int exec_id)]);

 (* messages *)

 val serialN = "serial";

 val (promptN, prompt) = markup_elem "prompt";

 val (readyN, ready) = markup_elem "ready";

 val (reportN, report) = markup_elem "report";

 val (no_reportN, no_report) = markup_elem "no_report";

 val (badN, bad) = markup_elem "bad";

 (** print mode operations **)

 val no_output = ("", "");

 fun default_output (_: T) = no_output;

 local

   val default = {output = default_output};

   val modes = Unsynchronized.ref (Symtab.make [("", default)]);

 in

   fun add_mode name output = CRITICAL (fn () =>

     Unsynchronized.change modes (Symtab.update_new (name, {output = output})));

   fun get_mode () =

     the_default default (Library.get_first (Symtab.lookup (! modes)) (print_mode_value ()));

 end;

 fun output m = if is_empty m then no_output else #output (get_mode ()) m;

 val enclose = output #-> Library.enclose;

 fun markup m =

   let val (bg, en) = output m

   in Library.enclose (Output.escape bg) (Output.escape en) end;

 end;