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doc_latex.pl
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doc_latex.pl
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/* Part of SWI-Prolog
Author: Jan Wielemaker
E-mail: [email protected]
WWW: http://www.swi-prolog.org
Copyright (C): 2007-2013, University of Amsterdam
VU University Amsterdam
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
As a special exception, if you link this library with other files,
compiled with a Free Software compiler, to produce an executable, this
library does not by itself cause the resulting executable to be covered
by the GNU General Public License. This exception does not however
invalidate any other reasons why the executable file might be covered by
the GNU General Public License.
*/
:- module(pldoc_latex,
[ doc_latex/3, % +Items, +OutFile, +Options
latex_for_file/3, % +FileSpec, +Out, +Options
latex_for_wiki_file/3, % +FileSpec, +Out, +Options
latex_for_predicates/3 % +PI, +Out, +Options
]).
:- use_module(library(pldoc)).
:- use_module(library(readutil)).
:- use_module(library(error)).
:- use_module(library(apply)).
:- use_module(library(option)).
:- use_module(library(lists)).
:- use_module(library(debug)).
:- use_module(pldoc(doc_wiki)).
:- use_module(pldoc(doc_process)).
:- use_module(pldoc(doc_modes)).
:- use_module(pldoc(doc_html), % we cannot import all as the
[ doc_file_objects/5, % \commands have the same name
unquote_filespec/2,
doc_tag_title/2,
existing_linked_file/2,
pred_anchor_name/3,
private/2,
(multifile)/2,
is_pi/1,
is_op_type/2
]).
/** <module> PlDoc LaTeX backend
This module translates the Herbrand term from the documentation
extracting module doc_wiki.pl into a LaTeX document for us with the
pl.sty LaTeX style file. The function of this module is very similar to
doc_html.pl, providing the HTML backend, and the implementation follows
the same paradigm. The module can
* Generate LaTeX documentation for a Prolog file, both for
printing and embedding in a larger document using
latex_for_file/3.
* Generate LaTeX from a Wiki file using latex_for_wiki_file/3
* Generate LaTeX for a single predicate or a list of predicates
for embedding in a document using latex_for_predicates/3.
@tbd See TODO
@author Jan Wielemaker
*/
:- predicate_options(doc_latex/3, 3,
[ stand_alone(boolean),
public_only(boolean),
section_level(oneof([section,subsection,subsubsection])),
summary(atom)
]).
:- predicate_options(latex_for_file/3, 3,
[ stand_alone(boolean),
public_only(boolean),
section_level(oneof([section,subsection,subsubsection]))
]).
:- predicate_options(latex_for_predicates/3, 3,
[ % no options
]).
:- predicate_options(latex_for_wiki_file/3, 3,
[ stand_alone(boolean),
public_only(boolean),
section_level(oneof([section,subsection,subsubsection]))
]).
:- thread_local
options/1,
documented/1.
current_options(Options) :-
options(Current), !,
Options = Current.
current_options([]).
%% doc_latex(+Spec, +OutFile, +Options) is det.
%
% Process one or more objects, writing the LaTeX output to
% OutFile. Spec is one of:
%
% * Name/Arity
% Generate documentation for predicate
%
% * Name//Arity
% Generate documentation for DCG rule
%
% * File
% If File is a prolog file (as defined by
% user:prolog_file_type/2), process using
% latex_for_file/3, otherwise process using
% latex_for_wiki_file/3.
%
% Typically Spec is either a list of filenames or a list of
% predicate indicators. Defined options are:
%
% * stand_alone(+Bool)
% If =true= (default), create a document that can be run
% through LaTeX. If =false=, produce a document to be
% included in another LaTeX document.
%
% * public_only(+Bool)
% If =true= (default), only emit documentation for
% exported predicates.
%
% * section_level(+Level)
% Outermost section level produced. Level is the
% name of a LaTeX section command. Default is =section=.
%
% * summary(+File)
% Write summary declarations to the named File.
doc_latex(Spec, OutFile, Options) :-
load_urldefs,
merge_options(Options,
[ include_reexported(true)
],
Options1),
retractall(documented(_)),
setup_call_cleanup(
asserta(options(Options), Ref),
phrase(process_items(Spec, [body], Options1), Tokens),
erase(Ref)),
setup_call_cleanup(
open(OutFile, write, Out),
print_latex(Out, Tokens, Options1),
close(Out)),
latex_summary(Options).
process_items([], Mode, _) --> !,
pop_mode(body, Mode, _).
process_items([H|T], Mode, Options) -->
process_items(H, Mode, Mode1, Options),
process_items(T, Mode1, Options).
process_items(Spec, Mode, Options) -->
{Mode = [Mode0|_]},
process_items(Spec, Mode, Mode1, Options),
pop_mode(Mode0, Mode1, _).
process_items(PI, Mode0, Mode, Options) -->
{ is_pi(PI) }, !,
need_mode(description, Mode0, Mode),
latex_tokens_for_predicates(PI, Options).
process_items(FileSpec, Mode0, Mode, Options) -->
{ ( absolute_file_name(FileSpec,
[ file_type(prolog),
access(read),
file_errors(fail)
],
File)
-> true
; absolute_file_name(FileSpec,
[ access(read)
],
File)
),
file_name_extension(_Base, Ext, File)
},
need_mode(body, Mode0, Mode),
( { user:prolog_file_type(Ext, prolog) }
-> latex_tokens_for_file(File, Options)
; latex_tokens_for_wiki_file(File, Options)
).
%% latex_for_file(+File, +Out, +Options) is det.
%
% Generate a LaTeX description of all commented predicates in
% File, writing the LaTeX text to the stream Out. Supports
% the options =stand_alone=, =public_only= and =section_level=.
% See doc_latex/3 for a description of the options.
latex_for_file(FileSpec, Out, Options) :-
load_urldefs,
phrase(latex_tokens_for_file(FileSpec, Options), Tokens),
print_latex(Out, Tokens, Options).
%% latex_tokens_for_file(+FileSpec, +Options)//
latex_tokens_for_file(FileSpec, Options, Tokens, Tail) :-
absolute_file_name(FileSpec,
[ file_type(prolog),
access(read)
],
File),
doc_file_objects(FileSpec, File, Objects, FileOptions, Options),
asserta(options(Options), Ref),
call_cleanup(phrase(latex([ \file_header(File, FileOptions)
| \objects(Objects, FileOptions)
]),
Tokens, Tail),
erase(Ref)).
%% latex_for_wiki_file(+File, +Out, +Options) is det.
%
% Write a LaTeX translation of a Wiki file to the steam Out.
% Supports the options =stand_alone=, =public_only= and
% =section_level=. See doc_latex/3 for a description of the
% options.
latex_for_wiki_file(FileSpec, Out, Options) :-
load_urldefs,
phrase(latex_tokens_for_wiki_file(FileSpec, Options), Tokens),
print_latex(Out, Tokens, Options).
latex_tokens_for_wiki_file(FileSpec, Options, Tokens, Tail) :-
absolute_file_name(FileSpec, File,
[ access(read)
]),
read_file_to_codes(File, String, []),
b_setval(pldoc_file, File),
asserta(options(Options), Ref),
call_cleanup((wiki_codes_to_dom(String, [], DOM),
phrase(latex(DOM), Tokens, Tail)
),
(nb_delete(pldoc_file),
erase(Ref))).
%% latex_for_predicates(+PI:list, +Out, +Options) is det.
%
% Generate LaTeX for a list of predicate indicators. This does
% *not* produce the \begin{description}...\end{description}
% environment, just a plain list of \predicate, etc. statements.
% The current implementation ignores Options.
latex_for_predicates(Spec, Out, Options) :-
load_urldefs,
phrase(latex_tokens_for_predicates(Spec, Options), Tokens),
print_latex(Out, [nl_exact(0)|Tokens], Options).
latex_tokens_for_predicates([], _Options) --> !.
latex_tokens_for_predicates([H|T], Options) --> !,
latex_tokens_for_predicates(H, Options),
latex_tokens_for_predicates(T, Options).
latex_tokens_for_predicates(PI, Options) -->
{ generic_pi(PI), !,
( doc_comment(PI, Pos, _Summary, Comment)
-> true
; Comment = ''
)
},
object(PI, Pos, Comment, [description], _, Options).
latex_tokens_for_predicates(Spec, Options) -->
{ findall(PI, documented_pi(Spec, PI), List),
( List == []
-> print_message(warning, pldoc(no_predicates_from(Spec)))
; true
)
},
latex_tokens_for_predicates(List, Options).
documented_pi(Spec, PI) :-
generalise_spec(Spec, PI),
doc_comment(PI, _Pos, _Summary, _Comment).
generic_pi(Module:Name/Arity) :-
atom(Module), atom(Name), integer(Arity), !.
generic_pi(Module:Name//Arity) :-
atom(Module), atom(Name), integer(Arity).
generalise_spec(Name/Arity, _M:Name/Arity).
generalise_spec(Name//Arity, _M:Name//Arity).
/*******************************
* LATEX PRODUCTION *
*******************************/
:- thread_local
fragile/0. % provided when in fragile mode
latex([]) --> !,
[].
latex(Atomic) -->
{ string(Atomic),
atom_string(Atom, Atomic),
sub_atom(Atom, 0, _, 0, 'LaTeX')
}, !,
[ latex('\\LaTeX{}') ].
latex(Atomic) --> % can this actually happen?
{ atomic(Atomic), !,
atom_string(Atom, Atomic),
findall(x, sub_atom(Atom, _, _, _, '\n'), Xs),
length(Xs, Lines)
},
( {Lines == 0}
-> [ Atomic ]
; [ nl(Lines) ]
).
latex(List) -->
latex_special(List, Rest), !,
latex(Rest).
latex(w(Word)) -->
[ Word ].
latex([H|T]) --> !,
( latex(H)
-> latex(T)
; { print_message(error, latex(failed(H))) },
latex(T)
).
% high level commands
latex(h1(Attrs, Content)) -->
latex_section(0, Attrs, Content).
latex(h2(Attrs, Content)) -->
latex_section(1, Attrs, Content).
latex(h3(Attrs, Content)) -->
latex_section(2, Attrs, Content).
latex(h4(Attrs, Content)) -->
latex_section(3, Attrs, Content).
latex(p(Content)) -->
[ nl_exact(2) ],
latex(Content).
latex(blockquote(Content)) -->
latex(cmd(begin(quote))),
latex(Content),
latex(cmd(end(quote))).
latex(center(Content)) -->
latex(cmd(begin(center))),
latex(Content),
latex(cmd(end(center))).
latex(a(Attrs, Content)) -->
{ attribute(href(HREF), Attrs) },
( {HREF == Content}
-> latex(cmd(url(HREF)))
; latex(cmd(url(opt(Content), HREF)))
).
latex(hr(_)) -->
latex(cmd(hrule)).
latex(code(CodeList)) -->
{ is_list(CodeList), !,
atomic_list_concat(CodeList, Atom)
},
( {fragile}
-> latex(cmd(const(Atom)))
; [ verb(Atom) ]
).
latex(code(Code)) -->
{ identifier(Code) }, !,
latex(cmd(const(Code))).
latex(code(Code)) -->
( {fragile}
-> latex(cmd(const(Code)))
; [ verb(Code) ]
).
latex(b(Code)) -->
latex(cmd(textbf(Code))).
latex(i(Code)) -->
latex(cmd(textit(Code))).
latex(var(Var)) -->
latex(cmd(arg(Var))).
latex(pre(_Class, Code)) -->
[ nl_exact(2), code(Code), nl_exact(2) ].
latex(ul(Content)) -->
{ if_short_list(Content, shortlist, itemize, Env) },
latex(cmd(begin(Env))),
latex(Content),
latex(cmd(end(Env))).
latex(ol(Content)) -->
latex(cmd(begin(enumerate))),
latex(Content),
latex(cmd(end(enumerate))).
latex(li(Content)) -->
latex(cmd(item)),
latex(Content).
latex(dl(_, Content)) -->
latex(cmd(begin(description))),
latex(Content),
latex(cmd(end(description))).
latex(dd(_, Content)) -->
latex(Content).
latex(dd(Content)) -->
latex(Content).
latex(dt(class=term, \term(Text, Term, Bindings))) -->
termitem(Text, Term, Bindings).
latex(dt(Content)) -->
latex(cmd(item(opt(Content)))).
latex(table(Attrs, Content)) -->
latex_table(Attrs, Content).
latex(\Cmd, List, Tail) :-
call(Cmd, List, Tail).
% low level commands
latex(latex(Text)) -->
[ latex(Text) ].
latex(cmd(Term)) -->
{ Term =.. [Cmd|Args] },
indent(Cmd),
[ cmd(Cmd) ],
latex_arguments(Args),
outdent(Cmd).
indent(begin) --> !, [ nl(2) ].
indent(end) --> !, [ nl_exact(1) ].
indent(section) --> !, [ nl(2) ].
indent(subsection) --> !, [ nl(2) ].
indent(subsubsection) --> !, [ nl(2) ].
indent(item) --> !, [ nl(1), indent(4) ].
indent(definition) --> !, [ nl(1), indent(4) ].
indent(tag) --> !, [ nl(1), indent(4) ].
indent(termitem) --> !, [ nl(1), indent(4) ].
indent(prefixtermitem) --> !, [ nl(1), indent(4) ].
indent(infixtermitem) --> !, [ nl(1), indent(4) ].
indent(postfixtermitem) --> !, [ nl(1), indent(4) ].
indent(predicate) --> !, [ nl(1), indent(4) ].
indent(dcg) --> !, [ nl(1), indent(4) ].
indent(infixop) --> !, [ nl(1), indent(4) ].
indent(prefixop) --> !, [ nl(1), indent(4) ].
indent(postfixop) --> !, [ nl(1), indent(4) ].
indent(predicatesummary) --> !,[ nl(1) ].
indent(oppredsummary) --> !, [ nl(1) ].
indent(hline) --> !, [ nl(1) ].
indent(_) --> [].
outdent(begin) --> !, [ nl_exact(1) ].
outdent(end) --> !, [ nl(2) ].
outdent(item) --> !, [ ' ' ].
outdent(tag) --> !, [ nl(1) ].
outdent(termitem) --> !, [ nl(1) ].
outdent(prefixtermitem) --> !, [ nl(1) ].
outdent(infixtermitem) --> !, [ nl(1) ].
outdent(postfixtermitem) --> !, [ nl(1) ].
outdent(definition) --> !, [ nl(1) ].
outdent(section) --> !, [ nl(2) ].
outdent(subsection) --> !, [ nl(2) ].
outdent(subsubsection) --> !, [ nl(2) ].
outdent(predicate) --> !, [ nl(1) ].
outdent(dcg) --> !, [ nl(1) ].
outdent(infixop) --> !, [ nl(1) ].
outdent(prefixop) --> !, [ nl(1) ].
outdent(postfixop) --> !, [ nl(1) ].
outdent(predicatesummary) --> !,[ nl(1) ].
outdent(oppredsummary) --> !, [ nl(1) ].
outdent(hline) --> !, [ nl(1) ].
outdent(_) --> [].
%% latex_special(String, Rest)// is semidet.
%
% Deals with special sequences of symbols.
latex_special(In, Rest) -->
{ url_chars(In, Chars, Rest),
special(Chars),
atom_chars(Atom, Chars),
urldef_name(Atom, Name)
}, !,
latex([cmd(Name), latex('{}')]).
special(Chars) :-
memberchk(\, Chars), !.
special(Chars) :-
length(Chars, Len),
Len > 1.
url_chars([H|T0], [H|T], Rest) :-
urlchar(H), !,
url_chars(T0, T, Rest).
url_chars(L, [], L).
%% latex_arguments(+Args:list)// is det.
%
% Write LaTeX command arguments. If an argument is of the form
% opt(Arg) it is written as [Arg], Otherwise it is written as
% {Arg}. Note that opt([]) is omitted. I think no LaTeX command is
% designed to handle an empty optional argument special.
%
% During processing the arguments it asserts fragile/0 to allow is
% taking care of LaTeX fragile constructs (i.e. constructs that
% are not allows inside {...}).
latex_arguments(List, Out, Tail) :-
asserta(fragile, Ref),
call_cleanup(fragile_list(List, Out, Tail),
erase(Ref)).
fragile_list([]) --> [].
fragile_list([opt([])|T]) --> !,
fragile_list(T).
fragile_list([opt(H)|T]) --> !,
[ '[' ],
latex_arg(H),
[ ']' ],
fragile_list(T).
fragile_list([H|T]) -->
[ curl(open) ],
latex_arg(H),
[ curl(close) ],
fragile_list(T).
%% latex_arg(+In)//
%
% Write a LaTeX argument. If we can, we will use a defined
% urldef_name/2.
latex_arg(H) -->
{ atomic(H),
atom_string(Atom, H),
urldef_name(Atom, Name)
}, !,
latex(cmd(Name)).
latex_arg(H) -->
{ maplist(atom, H),
atomic_list_concat(H, Atom),
urldef_name(Atom, Name)
}, !,
latex(cmd(Name)).
latex_arg(no_escape(Text)) --> !,
[no_escape(Text)].
latex_arg(H) -->
latex(H).
attribute(Att, Attrs) :-
is_list(Attrs), !,
option(Att, Attrs).
attribute(Att, One) :-
option(Att, [One]).
if_short_list(Content, If, Else, Env) :-
( short_list(Content)
-> Env = If
; Env = Else
).
%% short_list(+Content) is semidet.
%
% True if Content describes the content of a dl or ul/ol list
% where each elemenent has short content.
short_list([]).
short_list([_,dd(Content)|T]) :- !,
short_content(Content),
short_list(T).
short_list([_,dd(_, Content)|T]) :- !,
short_content(Content),
short_list(T).
short_list([li(Content)|T]) :-
short_content(Content),
short_list(T).
short_content(Content) :-
phrase(latex(Content), Tokens),
summed_string_len(Tokens, 0, Len),
Len < 50.
summed_string_len([], Len, Len).
summed_string_len([H|T], L0, L) :-
atomic(H), !,
atom_length(H, AL),
L1 is L0 + AL,
summed_string_len(T, L1, L).
summed_string_len([_|T], L0, L) :-
summed_string_len(T, L0, L).
%% latex_section(+Level, +Attributes, +Content)// is det.
%
% Emit a LaTeX section, keeping track of the desired highest
% section level.
%
% @param Level Desired level, relative to the base-level. Must
% be a non-negative integer.
latex_section(Level, Attrs, Content) -->
{ current_options(Options),
option(section_level(LaTexSection), Options, section),
latex_section_level(LaTexSection, BaseLevel),
FinalLevel is BaseLevel+Level,
( latex_section_level(SectionCommand, FinalLevel)
-> Term =.. [SectionCommand, Content]
; domain_error(latex_section_level, FinalLevel)
)
},
latex(cmd(Term)),
section_label(Attrs).
section_label(Attrs) -->
{ memberchk(id(Name), Attrs), !,
delete_unsafe_label_chars(Name, SafeName),
atom_concat('sec:', SafeName, Label)
},
latex(cmd(label(Label))).
section_label(_) -->
[].
latex_section_level(chapter, 0).
latex_section_level(section, 1).
latex_section_level(subsection, 2).
latex_section_level(subsubsection, 3).
latex_section_level(paragraph, 4).
deepen_section_level(Level0, Level1) :-
latex_section_level(Level0, N),
N1 is N + 1,
latex_section_level(Level1, N1).
%% delete_unsafe_label_chars(+LabelIn, -LabelOut)
%
% delete unsafe characters from LabelIn. Currently only deletes _,
% as this appears commonly through filenames, but cannot be
% handled through the LaTeX processing chain.
delete_unsafe_label_chars(LabelIn, LabelOut) :-
atom_chars(LabelIn, Chars),
delete(Chars, '_', CharsOut),
atom_chars(LabelOut, CharsOut).
/*******************************
* \ COMMANDS *
*******************************/
%% include(+File, +Type, +Options)// is det.
%
% Called from [[File]].
include(PI, predicate, _) --> !,
( latex_tokens_for_predicates(PI, [])
-> []
; latex(cmd(item(['[[', \predref(PI), ']]'])))
).
include(File, Type, Options) -->
{ existing_linked_file(File, Path) }, !,
include_file(Path, Type, Options).
include(File, _, _) -->
latex(code(['[[', File, ']]'])).
include_file(Path, image, Options) -->
{ option(caption(Caption), Options) }, !,
latex(cmd(begin(figure, [no_escape(htbp)]))),
latex(cmd(begin(center))),
latex(cmd(includegraphics(Path))),
latex(cmd(end(center))),
latex(cmd(caption(Caption))),
latex(cmd(end(figure))).
include_file(Path, image, _) --> !,
latex(cmd(includegraphics(Path))).
include_file(Path, Type, _) -->
{ assertion(memberchk(Type, [prolog,wiki])),
current_options(Options0),
select_option(stand_alone(_), Options0, Options1, _),
select_option(section_level(Level0), Options1, Options2, section),
deepen_section_level(Level0, Level),
Options = [stand_alone(false), section_level(Level)|Options2]
},
( {Type == prolog}
-> latex_tokens_for_file(Path, Options)
; latex_tokens_for_wiki_file(Path, Options)
).
%% file(+File, +Options)// is det.
%
% Called from implicitely linked files. The HTML version creates
% a hyperlink. We just name the file.
file(File, _Options) -->
{ fragile }, !,
latex(cmd(texttt(File))).
file(File, _Options) -->
latex(cmd(file(File))).
%% predref(+PI)// is det.
%
% Called from name/arity or name//arity patterns in the
% documentation.
predref(Module:Name/Arity) --> !,
latex(cmd(qpredref(Module, Name, Arity))).
predref(Module:Name//Arity) -->
latex(cmd(qdcgref(Module, Name, Arity))).
predref(Name/Arity) -->
latex(cmd(predref(Name, Arity))).
predref(Name//Arity) -->
latex(cmd(dcgref(Name, Arity))).
%% tags(+Tags:list(Tag)) is det.
%
% Emit tag list produced by the Wiki processor from the @keyword
% commands.
tags([\args(Params)|Rest]) --> !,
args(Params),
tags_list(Rest).
tags(List) -->
tags_list(List).
tags_list([]) -->
[].
tags_list(List) -->
[ nl(2) ],
latex(cmd(begin(tags))),
latex(List),
latex(cmd(end(tags))),
[ nl(2) ].
%% tag(+Tag, +Values:list)// is det.
%
% Called from \tag(Name, Values) terms produced by doc_wiki.pl.
tag(Tag, [One]) --> !,
{ doc_tag_title(Tag, Title) },
latex([ cmd(tag(Title))
| One
]).
tag(Tag, More) -->
{ doc_tag_title(Tag, Title) },
latex([ cmd(mtag(Title)),
\tag_value_list(More)
]).
tag_value_list([H|T]) -->
latex(['- '|H]),
( { T \== [] }
-> [latex(' \\\\')],
tag_value_list(T)
; []
).
%% args(+Params:list) is det.
%
% Called from \args(List) created by doc_wiki.pl. Params is a
% list of arg(Name, Descr).
args(Params) -->
latex([ cmd(begin(arguments)),
\arg_list(Params),
cmd(end(arguments))
]).
arg_list([]) -->
[].
arg_list([H|T]) -->
argument(H),
arg_list(T).
argument(arg(Name,Descr)) -->
[ nl(1) ],
latex(cmd(arg(Name))), [ latex(' & ') ],
latex(Descr), [latex(' \\\\')].
%% file_header(+File, +Options)// is det.
%
% Create the file header.
file_header(File, Options) -->
{ memberchk(file(Title, Comment), Options), !,
file_synopsis(File, Synopsis)
},
file_title([Synopsis, ': ', Title], File, Options),
{ is_structured_comment(Comment, Prefixes),
string_codes(Comment, Codes),
indented_lines(Codes, Prefixes, Lines),
section_comment_header(Lines, _Header, Lines1),
wiki_lines_to_dom(Lines1, [], DOM0),
tags_to_front(DOM0, DOM)
},
latex(DOM),
latex(cmd(vspace('0.7cm'))).
file_header(File, Options) -->
{ file_synopsis(File, Synopsis)
},
file_title([Synopsis], File, Options).
tags_to_front(DOM0, DOM) :-
append(Content, [\tags(Tags)], DOM0), !,
DOM = [\tags(Tags)|Content].
tags_to_front(DOM, DOM).
file_synopsis(File, Synopsis) :-
file_name_on_path(File, Term),
unquote_filespec(Term, Unquoted),
format(atom(Synopsis), '~w', [Unquoted]).
%% file_title(+Title:list, +File, +Options)// is det
%
% Emit the file-header and manipulation buttons.
file_title(Title, File, Options) -->
{ option(section_level(Level), Options, section),
Section =.. [Level,Title],
file_base_name(File, BaseExt),
file_name_extension(Base, _, BaseExt),
delete_unsafe_label_chars(Base, SafeBase),
atom_concat('sec:', SafeBase, Label)
},
latex(cmd(Section)),
latex(cmd(label(Label))).
%% objects(+Objects:list, +Options)// is det.
%
% Emit the documentation body.
objects(Objects, Options) -->
objects(Objects, [body], Options).
objects([], Mode, _) -->
pop_mode(body, Mode, _).
objects([Obj|T], Mode, Options) -->
object(Obj, Mode, Mode1, Options),
objects(T, Mode1, Options).
object(doc(Obj,Pos,Comment), Mode0, Mode, Options) --> !,
object(Obj, Pos, Comment, Mode0, Mode, Options).
object(Obj, Mode0, Mode, Options) -->
{ doc_comment(Obj, Pos, _Summary, Comment)
}, !,
object(Obj, Pos, Comment, Mode0, Mode, Options).
object(Obj, Pos, Comment, Mode0, Mode, Options) -->
{ is_pi(Obj), !,
is_structured_comment(Comment, Prefixes),
string_codes(Comment, Codes),
indented_lines(Codes, Prefixes, Lines),
strip_module(user:Obj, Module, _),
process_modes(Lines, Module, Pos, Modes, Args, Lines1),
( private(Obj, Options)
-> Class = privdef % private definition
; multifile(Obj, Options)
-> Class = multidef
; Class = pubdef % public definition
),
( Obj = Module:_
-> POptions = [module(Module)|Options]
; POptions = Options
),
DOM = [\pred_dt(Modes, Class, POptions), dd(class=defbody, DOM1)],
wiki_lines_to_dom(Lines1, Args, DOM0),
strip_leading_par(DOM0, DOM1),
assert_documented(Obj)
},
need_mode(description, Mode0, Mode),
latex(DOM).
object([Obj|Same], Pos, Comment, Mode0, Mode, Options) --> !,
object(Obj, Pos, Comment, Mode0, Mode, Options),
{ maplist(assert_documented, Same) }.
object(Obj, _Pos, _Comment, Mode, Mode, _Options) -->
{ debug(pldoc, 'Skipped ~p', [Obj]) },
[].
assert_documented(Obj) :-
assert(documented(Obj)).
%% need_mode(+Mode:atom, +Stack:list, -NewStack:list)// is det.
%
% While predicates are part of a description list, sections are
% not and we therefore need to insert <dl>...</dl> into the
% output. We do so by demanding an outer environment and push/pop
% the required elements.
need_mode(Mode, Stack, Stack) -->
{ Stack = [Mode|_] }, !,
[].
need_mode(Mode, Stack, Rest) -->
{ memberchk(Mode, Stack)
}, !,
pop_mode(Mode, Stack, Rest).
need_mode(Mode, Stack, [Mode|Stack]) --> !,
latex(cmd(begin(Mode))).
pop_mode(Mode, Stack, Stack) -->
{ Stack = [Mode|_] }, !,
[].
pop_mode(Mode, [H|Rest0], Rest) -->
latex(cmd(end(H))),
pop_mode(Mode, Rest0, Rest).
%% pred_dt(+Modes, +Class, Options)// is det.
%
% Emit the \predicate{}{}{} header.
%
% @param Modes List as returned by process_modes/5.
% @param Class One of =privdef= or =pubdef=.
%
% @tbd Determinism
pred_dt(Modes, Class, Options) -->
[nl(2)],
pred_dt(Modes, [], _Done, [class(Class)|Options]).
pred_dt([], Done, Done, _) -->
[].
pred_dt([H|T], Done0, Done, Options) -->
pred_mode(H, Done0, Done1, Options),
( {T == []}
-> []
; latex(cmd(nodescription)),
pred_dt(T, Done1, Done, Options)
).
pred_mode(mode(Head,Vars), Done0, Done, Options) --> !,
{ bind_vars(Head, Vars) },
pred_mode(Head, Done0, Done, Options).
pred_mode(Head is Det, Done0, Done, Options) --> !,
anchored_pred_head(Head, Done0, Done, [det(Det)|Options]).
pred_mode(Head, Done0, Done, Options) -->
anchored_pred_head(Head, Done0, Done, Options).
bind_vars(Term, Bindings) :-
bind_vars(Bindings),
anon_vars(Term).
bind_vars([]).
bind_vars([Name=Var|T]) :-
Var = '$VAR'(Name),
bind_vars(T).
%% anon_vars(+Term) is det.
%
% Bind remaining variables in Term to '$VAR'('_'), so they are
% printed as '_'.
anon_vars(Var) :-
var(Var), !,
Var = '$VAR'('_').
anon_vars(Term) :-
compound(Term), !,
Term =.. [_|Args],
maplist(anon_vars, Args).
anon_vars(_).
anchored_pred_head(Head, Done0, Done, Options) -->
{ pred_anchor_name(Head, PI, _Name) },
( { memberchk(PI, Done0) }
-> { Done = Done0 }
; { Done = [PI|Done0] }
),
pred_head(Head, Options).
%% pred_head(+Term, Options) is det.
%
% Emit a predicate head. The functor is typeset as a =span= using
% class =pred= and the arguments and =var= using class =arglist=.
%
% @tbd Support determinism in operators
pred_head(//(Head), Options) --> !,
{ pred_attributes(Options, Atts),
Head =.. [Functor|Args],
length(Args, Arity)
},
latex(cmd(dcg(opt(Atts), Functor, Arity, \pred_args(Args, 1)))).
pred_head(Head, _Options) --> % Infix operators
{ Head =.. [Functor,Left,Right],
Functor \== (:),
is_op_type(Functor, infix), !
},
latex(cmd(infixop(Functor, \pred_arg(Left, 1), \pred_arg(Right, 2)))).
pred_head(Head, _Options) --> % Prefix operators
{ Head =.. [Functor,Arg],
is_op_type(Functor, prefix), !
},
latex(cmd(prefixop(Functor, \pred_arg(Arg, 1)))).
pred_head(Head, _Options) --> % Postfix operators
{ Head =.. [Functor,Arg],
is_op_type(Functor, postfix), !
},
latex(cmd(postfixop(Functor, \pred_arg(Arg, 1)))).
pred_head(M:Head, Options) --> !, % Qualified predicates