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+%D \module
+%D [ file=strc-con,
+%D version=2008.10.20,
+%D title=\CONTEXT\ Structure Macros,
+%D subtitle=Constructions,
+%D author=Hans Hagen,
+%D date=\currentdate,
+%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
+%C
+%C This module is part of the \CONTEXT\ macro||package and is
+%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
+%C details.
+
+\writestatus{loading}{ConTeXt Structure Macros / Constructions}
+
+\registerctxluafile{strc-con}{1.001}
+
+% todo: check why \copy .. probably mkii leftover
+%
+% todo: check if commands similar to lists
+% todo: \strc_constructions_setup_counter\strc_constructions_setup_counter{#1} in setup ... synchronization
+%
+% ? : \def\showdnlisttext{\constructionparameter\c!listtext} % space in default
+%
+% maybe: pickup text and store in buffer ...
+%
+% \@@notemakeconstruction[##1]{}{##2}%
+% \expandafter\endgroup\noteparameter\c!next}}
+%
+% todo: \currentconstructionattribute : can be a counter instead
+
+%D Constructions are just descriptions but a bit more abstract so that we can
+%D conveniently build upon them. They are not really meant for users but module
+%D writers might find them useful. We mention a couple of parameters but these are
+%D only mentioned because in the shared code we map all resolvers to constructions.
+%D
+%D On top of constructions we build descriptions, enumerations, notes, labels and
+%D maybe some day more.
+
+\unprotect
+
+%D Todo:
+
+\installcorenamespace{construction}
+
+\installcommandhandler \??construction {construction} \??construction
+
+\let\setupconstructions\setupconstruction
+
+\setupconstructions[%
+ %c!title=,
+ %c!text=,
+ %
+ %c!style=,
+ %c!color=,
+ %c!command=,
+ %c!align=,
+ %
+ %c!headstyle=,
+ %c!headcolor=,
+ %c!headalign=,
+ %
+ %c!titlestyle=,
+ %c!titlecolor=,
+ %c!titlecommand=,
+ %c!titleleft=,
+ %c!titleright=,
+ %
+ %c!closesymbol=,
+ %c!closecommand=,
+ %
+ \c!alternative=\v!left,
+ \c!display=\v!yes,
+ \c!width=7\emwidth,
+ \c!distance=\emwidth,
+ \c!titledistance=.5\emwidth,
+ %c!hang=,
+ %c!sample=,
+ \c!margin=\v!no,
+ \c!before=\blank,
+ \c!inbetween=\blank,
+ \c!after=\blank,
+ %c!indentnext=,
+ %c!indenting=,
+ %
+ \c!expansion=\v!no,
+ %c!xmlsetup=,
+ %s!catcodes=,
+]
+
+%D Constructions and alike uses similar structures. In order to prevent issues
+%D we freeze some states. There is some overhead in the intermediate define
+%D step (as we could set them directly) but this is more flexible (and looks
+%D nicer). Keep in mind that descriptions, enumeration and notations are all
+%D independent and that we just remap the resolvers.
+
+% \defineconstruction[test][handler=description,level=1]
+% \defineconstruction[test][parent][handler=description,level=3]
+
+\installcorenamespace{constructionmain} % frozen after definition
+\installcorenamespace{constructionlevel} % frozen after definition
+\installcorenamespace{constructionclass} % frozen after definition
+
+\let\currentconstructionmain \empty
+\let\currentconstructionlevel \empty
+\let\currentconstructionhandler\empty
+
+\settrue\c_strc_constructions_define_commands % use with care, might become a proper key
+
+\appendtoks
+ \ifx\currentconstructionparent\empty
+ \letvalue{\??constructionmain\currentconstruction}\currentconstruction
+ \definelist[\currentconstruction]% goodie
+ \else
+ \letvalue{\??constructionmain\currentconstruction}\currentconstructionparent
+ \definelist[\currentconstruction][\currentconstructionparent]% goodie
+ \fi
+ \setevalue{\??constructionlevel\currentconstruction}{\number\constructionparameter\c!level}%
+ \setevalue{\??constructionclass\currentconstruction}{\constructionparameter\s!handler}%
+\to \everydefineconstruction
+
+\appendtoks
+ \ifconditional\c_strc_constructions_define_commands
+ \setuevalue{\e!start\currentconstruction}{\strc_constructions_start{\currentconstruction}}%
+ \setuevalue{\e!stop \currentconstruction}{\strc_constructions_stop}%
+ \fi
+\to \everydefineconstruction
+
+%D Just a basic environment (mostly for testing). We will provide a 'setup' based
+%D plugin once the rest is sorted out.
+
+\unexpanded\def\strc_constructions_start#1%
+ {\begingroup
+ \strc_constructions_initialize{#1}%
+ \dodoubleempty\strc_constructions_start_regular}
+
+\unexpanded\def\strc_constructions_start_regular[#1][#2]%
+ {\strc_constructions_register[\c!label={\constructionparameter\c!text},\c!reference=,\c!title=,\c!bookmark=,\c!list=,#1][#2]%
+ \csname\??constructionstarthandler\currentconstructionhandler\endcsname}
+
+\unexpanded\def\strc_constructions_stop
+ {\csname\??constructionstophandler\currentconstructionhandler\endcsname
+ \endgroup}
+
+%D As we will build on top of the generic construction mechanism we have handlers
+%D as a sort of plug in mechanism. In order to have some consistency we share
+%D some namespaces.
+
+\installcorenamespace{constructioninitializer}
+\installcorenamespace{constructionfinalizer}
+
+\installcorenamespace{constructionmainhandler}
+\installcorenamespace{constructioncommandhandler}
+\installcorenamespace{constructionstarthandler}
+\installcorenamespace{constructionstophandler}
+
+\installcorenamespace{constructiontexthandler}
+\installcorenamespace{constructionnotehandler}
+
+\unexpanded\def\strc_constructions_initialize#1% class instance
+ {\edef\currentconstruction{#1}%
+ \let\currentconstructionhash\??construction
+ \let\currentconstructionlistentry\!!zerocount
+ \expandafter\let\expandafter\currentconstructionmain \csname\??constructionmain \currentconstruction\endcsname
+ \expandafter\let\expandafter\currentconstructionlevel \csname\??constructionlevel\currentconstruction\endcsname
+ \expandafter\let\expandafter\currentconstructionhandler\csname\??constructionclass\currentconstruction\endcsname
+ \csname\??constructioninitializer\currentconstructionhandler\endcsname}
+
+\unexpanded\def\strc_constructions_finalize
+ {\csname\??constructionfinalizer\currentconstructionhandler\endcsname
+ \strc_constructions_discard}
+
+\newconditional\c_strc_constructions_number_state
+\newconditional\c_strc_constructions_title_state
+
+\unexpanded\setvalue{\??constructioninitializer\v!construction}%
+ {\setfalse\c_strc_constructions_number_state
+ \setfalse\c_strc_constructions_title_state}
+
+\unexpanded\setvalue{\??constructionfinalizer\v!construction}%
+ {}
+
+%D We keep the command variant around but rather would move to the start-stop one.
+%D Also, passing the title as argument has some history so we need to keep that as
+%D well.
+
+% \ifdefined\dotagsetconstruction \else \let\dotagsetconstruction\relax \fi
+
+\newtoks\everyconstruction
+
+\unexpanded\def\currentconstructiontext
+ {\begstrut
+ \csname\??constructiontexthandler\currentconstructionhandler\endcsname
+ \endstrut}
+
+\unexpanded\def\currentconstructionsample
+ {\begstrut
+ \constructionparameter\c!text
+ \p_strc_constructions_sample
+ \endstrut}
+
+\unexpanded\setvalue{\??constructionmainhandler\v!construction}#1%
+ {\iftrialtypesetting \else
+ \begingroup
+ \currentconstructionsynchronize % reinstated
+ \attribute\destinationattribute\currentconstructionattribute\relax % todo, whole text
+ \signalcharacter
+ \endgroup
+ \fi#1}
+
+\unexpanded\setvalue{\??constructiontexthandler\v!construction}%
+ {\begingroup
+ \useconstructionstyleandcolor\c!headstyle\c!headcolor % move to \currentconstructiontext
+ \the\everyconstruction
+ \constructionparameter\c!headcommand
+ {\strut
+ \constructionparameter\c!text
+ \clf_savedlisttitle{\currentconstructionmain}\currentconstructionlistentry\relax}%
+ \endgroup}
+
+\unexpanded\def\strc_constructions_stored_start
+ {\begingroup % brrr \endgroup elsewhere ... will be sorted out
+ \csname\??constructionstarthandler\currentconstructionhandler\endcsname}
+
+\unexpanded\def\strc_constructions_stored_stop
+ {\csname\??constructionstophandler\currentconstructionhandler\endcsname}
+
+\newconstant\c_strc_constructions_nested_state % to be redone
+
+\def\resetconstructions % to be used in e.g. footnotes
+ {\c_strc_constructions_nested_state\zerocount}
+
+\unexpanded\setvalue{\??constructioncommandhandler\v!construction}%
+ {\endgroup}
+
+\let\p_strc_constructions_sample \empty
+\let\p_strc_constructions_align \empty
+\let\p_strc_constructions_indenting \empty
+\let\p_strc_constructions_width \empty
+\let\p_strc_constructions_aligntitle \empty
+\let\p_strc_constructions_renderingsetup\empty
+\let\p_strc_constructions_headalign \empty
+\let\p_strc_constructions_hang \empty
+\let\p_strc_constructions_inbetween \empty
+\let\p_strc_constructions_closesymbol \empty
+\let\p_strc_constructions_distance \empty
+
+\newconditional\c_strc_constructions_distance_none
+
+\def\strc_constructions_set_width_and_distance
+ {\assignwidth
+ \p_strc_constructions_width
+ \constructionsheadwidth
+ {\unhcopy\constructionheadbox}
+ \constructionsheaddistance}
+
+\def\strc_constructions_preroll_head#content%
+ {\setbox\constructionheadbox\hbox
+ {\forgetall
+ \dontcomplain
+ \settrialtypesetting
+ \csname\??constructionmainhandler\currentconstructionhandler\endcsname#content}}
+
+\def\strc_constructions_ignore_head
+ {\constructionsheaddistance\zeropoint
+ \constructionsheadwidth \zeropoint
+ % we also need to make sure that no stretch creeps in (new per 2015-02-02, for Alan)
+ \settrue\c_strc_constructions_distance_none}
+
+\let\currentconstructionhash\??construction
+
+\unexpanded\setvalue{\??constructionstarthandler\v!construction}% this will be redone (reorganized) .. too much boxing
+ {\dostarttaggedchained\t!construction\currentconstruction\currentconstructionhash
+% \dotagsetconstruction
+ \constructionparameter\c!before
+ \begingroup
+ \edef\currentconstructionalternative{\constructionparameter\c!alternative}%
+ \edef\p_strc_constructions_renderingsetup{\constructionalternativeparameter\c!renderingsetup}%
+ % catch fuzzyness
+ \ifx\p_strc_constructions_renderingsetup\empty
+ \letconstructionparameter\c!alternative\v!left
+ \let\currentconstructionalternative\v!left
+ \edef\p_strc_constructions_renderingsetup{\constructionalternativeparameter\c!renderingsetup}%
+ \else
+ \doifnotsetups\p_strc_constructions_renderingsetup
+ {\letconstructionparameter\c!alternative\v!left
+ \let\currentconstructionalternative\v!left
+ \edef\p_strc_constructions_renderingsetup{\constructionalternativeparameter\c!renderingsetup}}%
+ \fi
+ %
+ \doadaptleftskip{\constructionparameter\c!margin}%
+ \setlocalhsize % so we can use \localhsize in width assignments
+ \edef\p_strc_constructions_distance{\constructionalternativeparameter\c!distance}%
+ \edef\p_strc_constructions_width{\constructionalternativeparameter\c!width}%
+ \ifx\p_strc_constructions_distance\v!none
+ \settrue\c_strc_constructions_distance_none
+ \constructionsheaddistance\zeropoint
+ \else
+ \setfalse\c_strc_constructions_distance_none
+ \constructionsheaddistance\p_strc_constructions_distance\relax
+ \ifdim\constructionsheaddistance=\zeropoint
+ \ifx\p_strc_constructions_width\v!broad
+ \constructionsheaddistance\emwidth
+ \fi
+ \fi
+ \fi
+ % inefficient and not always needed, for instance not with margins so we will make checkers
+ % per alternative some day (especially in labels this is unwanted overhead)
+ %
+ % maybe we should have an option as i cannot oversee the consequences now
+ %
+ % \edef\p_strc_constructions_sample{\constructionparameter\c!sample}%
+ % \ifx\p_strc_constructions_sample\empty
+ % \strc_constructions_preroll_head\currentconstructiontext
+ % \else
+ % \strc_constructions_preroll_head\currentconstructiontextsample
+ % \fi
+ % \strc_constructions_set_width_and_distance
+ %
+ \strc_constructions_preroll_head\currentconstructiontext
+ \ifzeropt\wd\constructionheadbox
+ \strc_constructions_ignore_head
+ \else
+ \edef\p_strc_constructions_sample{\constructionparameter\c!sample}%
+ \ifx\p_strc_constructions_sample\empty
+ \strc_constructions_set_width_and_distance
+ \else
+ \strc_constructions_preroll_head\currentconstructionsample
+ \ifzeropt\wd\constructionheadbox
+ \strc_constructions_ignore_head
+ \else
+ \strc_constructions_set_width_and_distance
+ \fi
+ \fi
+ \fi
+ %
+ \dostarttagged\t!constructiontag\empty % todo
+ \setbox\constructionheadbox\hbox
+ {\forgetall
+ \dontcomplain
+ \ifx\currentconstructionalternative\v!serried % brrr, hack, will change
+ \csname\??constructionmainhandler\currentconstructionhandler\endcsname\currentconstructiontext
+ \else
+ \csname\??constructionmainhandler\currentconstructionhandler\endcsname{\boxedconstructionhead\currentconstructiontext}%
+ \fi}%
+ \edef\p_strc_constructions_aligntitle{\constructionparameter\c!aligntitle}%
+ \ifx\p_strc_constructions_aligntitle\v!no
+ \leftconstructionskip \leftskip
+ \rightconstructionskip\rightskip
+ \else
+ \ifcase\c_strc_constructions_nested_state
+ \leftconstructionskip \leftskip
+ \rightconstructionskip\rightskip
+ \fi
+ \fi
+ \edef\p_strc_constructions_align{\constructionparameter\c!align}%
+ \ifx\p_strc_constructions_align\empty \else
+ \setupalign[\p_strc_constructions_align]% \use...
+ \fi
+ \ifcase\c_strc_constructions_nested_state
+ \c_strc_constructions_nested_state\plusone
+ \or
+ \c_strc_constructions_nested_state\plustwo
+ \fi
+ \strc_constructions_close_symbol_reset
+ %
+ \edef\p_strc_constructions_headalign{\constructionparameter\c!headalign}%
+ %
+ \directsetup\p_strc_constructions_renderingsetup\relax
+ % moved to here 2014-07-03
+ \edef\p_strc_constructions_indenting{\constructionparameter\c!indenting}%
+ \ifx\p_strc_constructions_indenting\empty \else
+ \indenting[\p_strc_constructions_indenting]% \use...
+ \fi
+ %
+ \dostoptagged % tag
+ \dostarttagged\t!constructioncontent\empty
+ \ignorespaces} % args not needed
+
+\unexpanded\setvalue{\??constructionstophandler\v!construction}%
+ {\strc_constructions_close_symbol_place
+ \doifnot{\constructionparameter\c!display}\v!no\par
+ \dostoptagged % content
+ \dostoptagged % construction
+ \endgroup
+ \constructionparameter\c!after
+ \useindentnextparameter\constructionparameter
+ \strc_constructions_finalize
+% \endgroup
+ \dorechecknextindentation}
+
+\unexpanded\def\boxedconstructionhead#1%
+ {\vtop
+ {\hsize\constructionsheadwidth
+ \edef\p_strc_constructions_headalign{\constructionparameter\c!headalign}%
+ \ifx\p_strc_constructions_headalign\empty \else
+ \setupalign[\p_strc_constructions_headalign]% \use...
+ \fi
+ #1}}
+
+\installcorenamespace{constructionalternative}
+\installcorenamespace{constructionrenderings}
+
+% see lists: alternativemethods ... todo
+%
+% there will be a proper interface to variables
+
+\installcommandhandler \??constructionalternative {constructionalternative} \??constructionalternative
+
+\setupconstructionalternative
+ [\c!width=\constructionparameter\c!width,
+ \c!distance=\constructionparameter\c!distance]
+
+\defineconstructionalternative
+ [\v!left]
+ [%\c!width=7em,
+ %\c!distance=1em,
+ \c!renderingsetup=\??constructionrenderings:\v!left]
+
+\defineconstructionalternative
+ [\v!right]
+ [%\c!width=7em,
+ %\c!distance=1em,
+ \c!renderingsetup=\??constructionrenderings:\v!right]
+
+\defineconstructionalternative
+ [\v!inmargin]
+ [\c!renderingsetup=\??constructionrenderings:\v!inmargin]
+
+\defineconstructionalternative
+ [\v!inleft]
+ [\c!renderingsetup=\??constructionrenderings:\v!inleft]
+
+\defineconstructionalternative
+ [\v!inright]
+ [\c!renderingsetup=\??constructionrenderings:\v!inright]
+
+\defineconstructionalternative
+ [\v!margin]
+ [\c!renderingsetup=\??constructionrenderings:\v!margin]
+
+\defineconstructionalternative
+ [\v!leftmargin]
+ [\c!renderingsetup=\??constructionrenderings:\v!leftmargin]
+
+\defineconstructionalternative
+ [\v!rightmargin]
+ [\c!renderingsetup=\??constructionrenderings:\v!rightmargin]
+
+\defineconstructionalternative
+ [\v!innermargin]
+ [\c!renderingsetup=\??constructionrenderings:\v!innermargin]
+
+\defineconstructionalternative
+ [\v!outermargin]
+ [\c!renderingsetup=\??constructionrenderings:\v!outermargin]
+
+\defineconstructionalternative
+ [\v!serried]
+ [\c!renderingsetup=\??constructionrenderings:\v!serried]
+
+\defineconstructionalternative
+ [\v!hanging]
+ [%\c!width=\v!fit,
+ \c!renderingsetup=\??constructionrenderings:\v!hanging]
+
+\defineconstructionalternative
+ [\v!top]
+ [\c!renderingsetup=\??constructionrenderings:\v!top,
+ \c!width=\localhsize]
+
+\defineconstructionalternative
+ [\v!command]
+ [\c!renderingsetup=\??constructionrenderings:\v!command]
+
+\newbox \constructionheadbox
+\newskip \leftconstructionskip
+\newskip \rightconstructionskip
+\newdimen \constructionsheadwidth % replaces \!!widtha % TODO: proper namespace dimens
+\newdimen \constructionsheaddistance % replaces \!!widthb % TODO: proper namespace dimens
+
+\def\strc_constructions_set_hang_box#1% messy left/rightskip
+ {\setbox\constructionheadbox\vtop % \vbox gaat fout in hang
+ {\forgetall
+ \dontcomplain
+ \hsize\constructionsheadwidth\relax
+ \ifx\p_strc_constructions_headalign\empty
+ \setupalign[#1]% use fast one
+ \else
+ \setupalign[\p_strc_constructions_headalign]% use fast one
+ \fi
+ \ifconditional\c_strc_constructions_distance_none \else
+ \advance\ifx#1\v!flushleft\rightskip\else\leftskip\fi\constructionsheaddistance % only difference and wrong anyway
+ \fi
+ \flushconstructionheadbox}%
+ \setbox\constructionheadbox\hpack{\box\constructionheadbox}% needed in case of e.g. a real big head font, see descriptions-006.tex
+ \ht\constructionheadbox\strutht
+ \dp\constructionheadbox\strutdp}
+
+\def\strc_constructions_set_pure_box#1% default ... better set up differently
+ {\setbox\constructionheadbox\vtop
+ {\forgetall
+ \dontcomplain
+ \hsize\constructionsheadwidth\relax
+ \ifx\p_strc_constructions_headalign\empty
+ \setupalign[#1]% use fast one
+ \else
+ \setupalign[\p_strc_constructions_headalign]% use fast one
+ \fi
+ \flushconstructionheadbox}%
+ \setbox\constructionheadbox\hpack{\box\constructionheadbox}% needed in case of e.g. a real big head font, see descriptions-006.tex
+ \ht\constructionheadbox\strutht
+ \dp\constructionheadbox\strutdp}
+
+\def\strc_constructions_set_hang#1%
+ {\ifx\p_strc_constructions_hang\empty
+ % nothing
+ \else\ifx\p_strc_constructions_hang\v!fit
+ \scratchdimen\htdp\constructionheadbox
+ \getnoflines\scratchdimen
+ \hangafter-\noflines
+ \else\ifx\p_strc_constructions_hang\v!broad
+ \scratchdimen\dimexpr\htdp\constructionheadbox+.5\strutht\relax
+ \getnoflines\scratchdimen
+ \hangafter-\noflines
+ \else
+ \hangafter-\p_strc_constructions_hang
+ \fi\fi\fi
+ \relax
+ \hangindent\ifx#1\v!right-\fi\constructionsheadwidth}
+
+% \unexpanded\def\flushconstructionheadbox
+% {\ifhbox\constructionheadbox\unhcopy\else\copy\fi\constructionheadbox}
+
+\unexpanded\def\flushconstructionheadbox
+ {\ifhbox\constructionheadbox\unhbox\else\box\fi\constructionheadbox}
+
+% The setups. These only deal with placement of the descriptor and initializing the
+% environment. The wrapping happens elsewhere.
+
+% todo: optimize the setups with
+%
+% \ifconditional\c_strc_constructions_distance_none : no need for skip
+% \ifzeropt\wd\constructionheadbox : no need for box and skips
+
+\startsetups[\??constructionrenderings:\v!left]
+ \edef\p_strc_constructions_hang{\constructionparameter\c!hang}%
+ \doifelsesetups{\??constructionrenderings:\v!left:\p_strc_constructions_hang} {
+ \directsetup{\??constructionrenderings:\v!left:\p_strc_constructions_hang}
+ } {
+ \directsetup{\??constructionrenderings:\v!left:\v!hanging}
+ }
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!right]
+ \edef\p_strc_constructions_hang{\constructionparameter\c!hang}
+ \doifelsesetups{\??constructionrenderings:\v!right:\p_strc_constructions_hang} {
+ \directsetup{\??constructionrenderings:\v!right:\p_strc_constructions_hang}
+ } {
+ \directsetup{\??constructionrenderings:\v!right:\v!hanging}
+ }
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!left:\v!none]
+ \let\\=\crlf
+ \noindent
+ \strc_constructions_set_pure_box\v!flushleft
+ \leftskip\dimexpr\leftconstructionskip+\constructionsheadwidth+\constructionsheaddistance\relax
+ \rightskip\rightconstructionskip\relax
+ \llap {
+ \hpack to \leftskip {
+ \hskip\leftconstructionskip
+ \box\constructionheadbox % was copy
+ \hss
+ }
+ }
+ \nobreak
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!left:0]
+ \directsetup{\??constructionrenderings:\v!left:\v!none}
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!left:]
+ \directsetup{\??constructionrenderings:\v!left:\v!none}
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!right:\v!none]
+ \let\\=\crlf
+ \noindent
+ \leftskip\leftconstructionskip
+ \rightskip\dimexpr\rightconstructionskip+\constructionsheadwidth\relax
+ %\strc_constructions_pure_hang_box\raggedleft
+ \strc_constructions_set_pure_box\v!flushright
+ \rlap {
+ \hskip\dimexpr\hsize-\leftskip-\rightskip\relax
+ \copy\constructionheadbox
+ \hskip\rightconstructionskip
+ }
+ \nobreak
+ \advance\rightskip \constructionsheaddistance
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!right:0]
+ \directsetup{\??constructionrenderings:\v!right:\v!none}
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!right:]
+ \directsetup{\??constructionrenderings:\v!right:\v!none}
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!left:\v!margin]%
+ \let\\=\crlf
+ \noindent
+ \strc_constructions_set_pure_box\v!flushleft
+ \llap {
+ \hpack to \constructionsheadwidth {
+ \box\constructionheadbox % was copy
+ \hss
+ }
+ \hskip\constructionsheaddistance
+ }
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!right:\v!margin]%
+ \let\\=\crlf
+ \noindent
+ \strc_constructions_set_pure_box\v!flushright
+ \rlap {
+ \hskip\constructionsheaddistance
+ \hpack to \constructionsheadwidth {
+ \box\constructionheadbox % was copy
+ \hss
+ }
+ }
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!left:\v!hanging]%
+ \let\\=\crlf
+ \dontcomplain
+ \advance\constructionsheadwidth \constructionsheaddistance
+ \strc_constructions_set_hang_box\v!flushleft
+ \strc_constructions_set_hang\v!left
+ \noindent
+ \llap {
+ \tpack to \zeropoint {
+ \box\constructionheadbox
+ }
+ }
+ \nobreak
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!right:\v!hanging]%
+ \let\\=\crlf
+ \dontcomplain
+ \advance\constructionsheadwidth \constructionsheaddistance
+ \strc_constructions_set_hang_box\v!flushright
+ \strc_constructions_set_hang\v!right
+ \noindent
+ \rlap {
+ \hpack to \dimexpr\hsize-\leftskip-\rightskip\relax {
+ \hss
+ \tpack to \zeropoint {
+ \box\constructionheadbox
+ }
+ }
+ }
+ \nobreak
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!top]
+ \strc_sectioning_prevent_page_break\plusone
+ \let\\=\space
+ \noindent
+ \copy\constructionheadbox % why copy ?
+ \par
+ \nobreak
+ \edef\p_strc_constructions_inbetween{\constructionparameter\c!inbetween}%
+ \ifx\p_strc_constructions_inbetween\empty \else
+ \p_strc_constructions_inbetween
+ \par
+ \nobreak
+ \fi
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+% why copy? historic reason?
+
+\startsetups[\??constructionrenderings:\v!margin]
+ \let\\=\crlf
+ \noindent
+ \inmargin[\c!scope=\v!local]{\flushconstructionheadbox}%
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!leftmargin]
+ \let\\=\crlf
+ \noindent
+ \inleft[\c!scope=\v!local]{\flushconstructionheadbox}%
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!rightmargin]
+ \let\\=\crlf
+ \noindent
+ \inright[\c!scope=\v!local]{\flushconstructionheadbox}%
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!innermargin]
+ \let\\=\crlf
+ \noindent
+ \ininner[\c!scope=\v!local]{\flushconstructionheadbox}%
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!outermargin]
+ \let\\=\crlf
+ \noindent
+ \inouter[\c!scope=\v!local]{\flushconstructionheadbox}%
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!inmargin]
+ \directsetup{\??constructionrenderings:\v!margin}
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!inleft]
+ \directsetup{\??constructionrenderings:\v!leftmargin}
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!inright]
+ \directsetup{\??constructionrenderings:\v!rightmargin}
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!serried]
+ \edef\p_strc_constructions_width{\constructionparameter\c!width}% CHECK ! ! ! wrong parameter namespace
+ \doifelsesetups{\??constructionrenderings:\v!serried:\p_strc_constructions_width} {
+ \directsetup{\??constructionrenderings:\v!serried:\p_strc_constructions_width}
+ } {
+ \directsetup{\??constructionrenderings:\v!serried:\v!wide}
+ }
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!serried:\v!fit]
+ \let\\=\crlf
+ \noindent
+ \flushconstructionheadbox
+ \nobreak
+ \hskip\constructionsheaddistance\relax
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!serried:\v!broad]
+ \let\\=\crlf
+ \noindent
+ \flushconstructionheadbox
+ \ifconditional\c_strc_constructions_distance_none \else
+ \nobreak
+ \hskip\constructionsheaddistance \!!plus .5\constructionsheaddistance \!!minus .25\constructionsheaddistance\relax
+ \fi
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!serried:]
+ \directsetup{\??constructionrenderings:\v!serried:\v!broad}
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!serried:\v!wide]
+ \let\\=\crlf
+ \noindent
+ \hbox to \constructionsheadwidth {
+ \flushconstructionheadbox
+ \hss
+ }
+ \nobreak
+ \hskip\constructionsheaddistance\relax
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+\startsetups[\??constructionrenderings:\v!hanging]
+ % tricky: leftskipadaption is somewhat unpredictable
+ \let\\=\crlf
+ \noindent
+ \advance\leftskip-\leftskipadaption\relax
+ \ifdim\leftskipadaption=\zeropoint
+ \leftskipadaption1.5\emwidth\relax % just some default
+ \ifnum\c_strc_constructions_nested_state=\plusone
+ \ifdim\leftskip>\zeropoint \relax
+ \leftskipadaption\leftskip
+ \fi
+ \fi
+ \fi
+ \ifnum\c_strc_constructions_nested_state>\zerocount % was \ifnum\c_strc_constructions_nested_state=\plusone
+ \advance\leftskip\leftskipadaption % but we're already further on
+ \fi
+ \hskip-\leftskipadaption\relax
+ \ifhbox\constructionheadbox \unhbox\else\box\fi\constructionheadbox
+ \ifconditional\c_strc_constructions_distance_none \else
+ % we used to have just a kern, but long lines look bad then
+ \scratchdistance\ifdim\constructionsheaddistance=\zeropoint .75\emwidth\else\constructionsheaddistance\fi
+ \hskip \scratchdistance
+ \s!plus .25\scratchdistance
+ \s!minus.25\scratchdistance
+ \fi
+ \allowbreak % new
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+%D \starttyping
+%D \setupfootnotation[location=command,headcommand=\llap]
+%D \stoptyping
+
+\startsetups[\??constructionrenderings:\v!command]
+ \noindent
+ \constructionparameter\c!headcommand{\flushconstructionheadbox}
+ \useconstructionstyleandcolor\c!style\c!color
+ \ignorespaces
+\stopsetups
+
+% you can use \placeclosesymbol or \qed to place a symbol at the end of a
+% construction
+
+\installcorenamespace{constructionclosesymbol}
+
+\let\placeclosesymbol\donothing
+\let\qed \donothing
+
+\def\strc_constructions_close_symbol_reset % no need for global
+ {\global\expandafter\settrue\csname\??constructionclosesymbol\currentconstruction\endcsname
+ \let\placeclosesymbol\strc_constructions_close_symbol_place
+ \let\qed \strc_constructions_close_symbol_place}
+
+\unexpanded\def\strc_constructions_close_symbol_place
+ {\ifconditional\csname\??constructionclosesymbol\currentconstruction\endcsname
+ \global\expandafter\setfalse\csname\??constructionclosesymbol\currentconstruction\endcsname
+ \edef\p_strc_constructions_closesymbol{\constructionparameter\c!closesymbol}%
+ \ifx\p_strc_constructions_closesymbol\empty \else
+ \constructionparameter\c!closecommand{\p_strc_constructions_closesymbol}% hm why {} maybe because box expected
+ \fi
+ \fi}
+
+\newif\ifnoconstructioncaption
+
+%D The storage macros:
+
+\let\currentconstructionlistentry\!!zerocount
+
+\def\strc_constructions_register
+ {\clf_doifelselisthasentry\numexpr\currentconstructionlistentry\relax
+ \strc_constructions_register_nop
+ \strc_constructions_register_yes}
+
+% \def\strc_constructions_register{\strc_constructions_register_yes}
+
+\def\strc_constructions_register_nop[#1][#2]% #1=interfaced-settings, #2=optional user data
+ %{\writestatus{constructions}{reusing \currentconstruction: \number\currentconstructionlistentry}}
+ {}
+
+\def\strc_constructions_discard
+ {\iftrialtypesetting
+ % \writestatus{constructions}{discarding \currentconstruction: \number\currentconstructionlistentry}%
+ \clf_discardfromlist\currentconstructionlistentry\relax
+ \fi}
+
+\let\currentconstructionlistnumber \!!zerocount
+\let\currentconstructionsynchronize\relax
+\let\currentconstructionattribute \attributeunsetvalue
+
+\def\strc_constructions_register_yes[#1][#2]% #1=interfaced-settings, #2=optional user data
+ {\begingroup % similar to structure so we might generalize this
+ \setupcurrentconstruction[#1]% % xdef's will become edef's
+ \xdef\currentconstructionexpansion {\constructionparameter\c!expansion}%
+ \xdef\currentconstructionxmlsetup {\constructionparameter\c!xmlsetup}%
+ \xdef\currentconstructioncatcodes {\constructionparameter\s!catcodes}%
+ \xdef\currentconstructionlabel {\constructionparameter\c!label}%
+ \xdef\currentconstructionreference {\constructionparameter\c!reference}%
+ \xdef\currentconstructionreferenceprefix{\constructionparameter\c!referenceprefix}%
+ %xdef\currentconstructionshownumber {\constructionparameter\c!number}%
+ \xdef\currentconstructionincrementnumber{\constructionparameter\c!incrementnumber}%
+ %
+ \ifx\currentconstructionexpansion\empty
+ \global\let\currentconstructionexpansion\v!no
+ \fi
+ %
+ \ifx\currentconstructionexpansion\s!xml
+ \xmlstartraw
+ \xdef\currentconstructiontitle {\constructionparameter\c!title}%
+ \xdef\currentconstructionbookmark{\constructionparameter\c!bookmark}%
+ \xdef\currentconstructionmarking {\constructionparameter\c!marking}%
+ \xdef\currentconstructionlist {\constructionparameter\c!list}%
+ \xmlstopraw
+ \ifx\currentconstructionlist\empty
+ \global\let\currentconstructionlist\currentconstructiontitle
+ \fi
+ \global\let\currentconstructioncoding\s!xml
+ \else
+ \ifx\currentconstructionexpansion\v!yes
+ \xdef\currentconstructiontitle {\constructionparameter\c!title}%
+ \xdef\currentconstructionbookmark{\constructionparameter\c!bookmark}%
+ \xdef\currentconstructionmarking {\constructionparameter\c!marking}%
+ \xdef\currentconstructionlist {\constructionparameter\c!list}%
+ \else
+ \xdef\currentconstructiontitle {\detokenizedconstructionparameter\c!title}%
+ \xdef\currentconstructionbookmark{\detokenizedconstructionparameter\c!bookmark}%
+ \xdef\currentconstructionmarking {\detokenizedconstructionparameter\c!marking}%
+ \xdef\currentconstructionlist {\detokenizedconstructionparameter\c!list}%
+ \iflocation \ifx\currentconstructionbookmark\empty
+ \begingroup
+ \simplifycommands
+ \xdef\currentconstructionbookmark{\detokenize\expandafter{\normalexpanded{\constructionparameter\c!title}}}%
+ \endgroup
+ \fi \fi
+ \fi
+ \ifx\currentconstructionlist\empty
+ \globallet\currentconstructionlist\currentconstructiontitle
+ \fi
+ \globallet\currentconstructioncoding\s!tex
+ \fi
+ %
+ \ifx\currentconstructiontitle\v!none % will become obsolete
+ \global\noconstructioncaptiontrue\global\noconstructionnumbertrue
+ \fi
+ %
+ \ifnoconstructioncaption % then why analyze anyway?
+ \endgroup
+ \let\currentconstructionlistnumber \relax
+ \let\currentconstructionsynchronize\relax
+ \let\currentconstructionattribute \relax
+ \else
+ \setnextinternalreferences{construction}\currentconstructionmain % plural
+ \relax
+ \scratchcounter\clf_addtolist
+ metadata {
+ kind {construction}
+ name {\currentconstructionmain}
+ % level structures.sections.currentlevel()
+ catcodes \catcodetable
+ }
+ references {
+ internal \nextinternalreference
+ order \nextinternalorderreference
+ reference {\currentconstructionreference}
+ prefix {\referenceprefix}
+ % block {\currentsectionblock}
+ % section structures.sections.currentid(),
+ }
+ titledata {
+ label {\detokenize\expandafter{\currentconstructionlabel}}
+ title {\detokenize\expandafter{\currentconstructiontitle}}
+ \ifx\currentconstructionbookmark\currentconstructiontitle \else
+ bookmark {\detokenize\expandafter{\currentconstructionbookmark}}
+ \fi
+ \ifx\currentconstructionlist\currentconstructiontitle \else
+ list {\detokenize\expandafter{\currentconstructionlist}}
+ \fi
+ }
+ \ifconditional\c_strc_constructions_number_state
+ prefixdata {
+ prefix {\constructionparameter\c!prefix}
+ separatorset {\constructionparameter\c!prefixseparatorset}
+ conversion {\constructionparameter\c!prefixconversion}
+ conversionset {\constructionparameter\c!prefixconversionset}
+ set {\constructionparameter\c!prefixset}
+ segments {\constructionparameter\c!prefixsegments}
+ connector {\constructionparameter\c!prefixconnector}
+ }
+ numberdata {
+ numbers {\currentconstructionnumber}
+ separatorset {\constructionparameter\c!numberseparatorset}
+ conversion {\constructionparameter\c!numberconversion}
+ conversionset {\constructionparameter\c!numberconversionset}
+ starter {\constructionparameter\c!numberstarter}
+ stopper {\constructionparameter\c!numberstopper}
+ segments {\constructionparameter\c!numbersegments}
+ }
+ \or
+ % symbol
+ \fi
+ userdata {\detokenize{#2}}
+ \relax
+ % \writestatus{constructions}{registering \currentconstruction: \number\scratchcounter}%
+ \clf_setinternalreference
+ prefix {\referenceprefix}%
+ reference {\currentconstructionreference}%
+ internal \nextinternalreference
+ view {\interactionparameter\c!focus}%
+ \relax
+ \normalexpanded{%
+ \endgroup
+ \edef\noexpand\currentconstructionlistentry {\the\scratchcounter}%
+ \edef\noexpand\currentconstructionattribute {\the\lastdestinationattribute}%
+ \edef\noexpand\currentconstructionsynchronize{\ctxlatecommand{enhancelist(\the\scratchcounter)}}%
+ }%
+ \fi}
+
+% This is not so nice, some day I'll just store the number with the entry
+% and deal with all at the Lua end, but first we need to be able to set
+% macros.
+
+\def\reinstateconstructionnumberentry#1% was xdef
+ {\edef\currentconstructionattribute {\clf_getinternallistreference#1}%
+ \edef\currentconstructionsynchronize{\ctxlatecommand{enhancelist(#1)}}}
+
+\installstructurelistprocessor{construction}{\usestructurelistprocessor{number+title}}
+
+% Helpers:
+
+\def\currentconstructionnumber{\constructionparameter\s!counter}
+
+\unexpanded\def\strc_constructions_next_indeed #get#tag#level{\strc_counters_increment_sub{#get{#tag}\s!counter}{#level}}
+\unexpanded\def\strc_constructions_reset_indeed#get#tag#level{\strc_counters_reset_sub {#get{#tag}\s!counter}{#level}}
+
+\protect \endinput
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-23 11:48:19 +0000