(* Title: Pure/Thy/latex.ML
ID: $Id$
Author: Markus Wenzel, TU Muenchen
LaTeX presentation primitives (based on outer lexical syntax).
*)
signature LATEX =
sig
datatype token = Basic of OuterLex.token | Markup of string * string | Verbatim of string
val old_symbol_source: Symbol.symbol list -> string
val token_source: token list -> string
val theory_entry: string -> string
end;
structure Latex: LATEX =
struct
(* symbol output *)
local
val output_chr = fn
" " => "~" |
"\n" => "\\isanewline\n" |
"$" => "\\$" |
"&" => "\\&" |
"%" => "\\%" |
"#" => "\\#" |
"_" => "\\_" |
"{" => "{\\isabraceleft}" |
"}" => "{\\isabraceright}" |
"~" => "{\\isatilde}" |
"^" => "{\\isacircum}" |
"\"" => "{\"}" |
"\\" => "{\\isabackslash}" |
c => c;
fun output_sym s =
if size s = 1 then output_chr s
else
(case explode s of
cs as "\\" :: "<" :: "^" :: _ => implode (map output_chr cs)
| "\\" :: "<" :: cs => "{\\isasym" ^ implode (#1 (Library.split_last cs)) ^ "}"
| _ => sys_error "output_sym");
in
val output_symbols = implode o map output_sym;
val output_syms = output_symbols o Symbol.explode;
end;
(* token output *)
structure T = OuterLex;
datatype token = Basic of T.token | Markup of string * string | Verbatim of string;
val invisible_token = T.keyword_with (equal ";") orf T.is_kind T.Comment;
fun strip_blanks s =
implode (#1 (Library.take_suffix Symbol.is_blank
(#2 (Library.take_prefix Symbol.is_blank (explode s)))));
fun output_tok (Basic tok) =
let val s = T.val_of tok in
if invisible_token tok then ""
else if T.is_kind T.Command tok then
if s = "{{" then "{\\isabeginblock}"
else if s = "}}" then "{\\isaendblock}"
else "\\isacommand{" ^ output_syms s ^ "}"
else if T.is_kind T.Keyword tok andalso Syntax.is_identifier s then
"\\isakeyword{" ^ output_syms s ^ "}"
else if T.is_kind T.String tok then output_syms (quote s)
else if T.is_kind T.Verbatim tok then output_syms (enclose "{*" "*}" s)
else output_syms s
end
| output_tok (Markup (cmd, txt)) = "%\n\\isamarkup" ^ cmd ^ "{" ^ strip_blanks txt ^ "}\n"
| output_tok (Verbatim txt) = "%\n" ^ strip_blanks txt ^ "\n";
val output_tokens = implode o map output_tok;
(* theory presentation *)
val isabelle_env = enclose "\\begin{isabelle}%\n" "\\end{isabelle}%\n";
val old_symbol_source = isabelle_env o output_symbols;
val token_source = isabelle_env o output_tokens;
fun theory_entry name = "\\input{" ^ name ^ ".tex}\n";
(* print mode *)
fun latex_output str =
let val syms = Symbol.explode str
in (output_symbols syms, real (Symbol.length syms)) end;
val _ = Symbol.add_mode "latex" latex_output;
end;