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-% --------------------------------------------------------------------------
-%
-% the CHEMMACROS package -- module: `particles'
-%
-% --------------------------------------------------------------------------
-% Clemens Niederberger
-% --------------------------------------------------------------------------
-% https://github.org/cgnieder/chemmacros/
-% contact@mychemistry.eu
-% --------------------------------------------------------------------------
-% If you have any ideas, questions, suggestions or bugs to report, please
-% feel free to contact me.
-% --------------------------------------------------------------------------
-% Copyright 2011--2020 Clemens Niederberger
-%
-% This work may be distributed and/or modified under the
-% conditions of the LaTeX Project Public License, either version 1.3c
-% of this license or (at your option) any later version.
-% The latest version of this license is in
-% http://www.latex-project.org/lppl.txt
-% and version 1.3 or later is part of all distributions of LaTeX
-% version 2008/05/04 or later.
-%
-% This work has the LPPL maintenance status `maintained'.
-%
-% The Current Maintainer of this work is Clemens Niederberger.
-% --------------------------------------------------------------------------
-\ChemModule{particles}{2016/04/02 particles}
-
-\chemmacros_load_modules:n {charges,chemformula}
-
-% --------------------------------------------------------------------------
-% particles
-\cs_new_protected:Nn \chemmacros_define_particle:Nn
- {
- \tl_set_rescan:Nnn \l__chemmacros_tmpa_tl { \ExplSyntaxOff } {#2}
- \use:x
- {
- \cs_set_protected:Npn \exp_not:N #1
- { \chemmacros_chemformula:n { \exp_not:V \l__chemmacros_tmpa_tl } }
- }
- }
-
-\NewChemMacroset {Particle} {mm}
- { \chemmacros_define_particle:Nn #1 {#2} }
-
-% --------------------------------------------------------------------------
-% nucleophiles
-\cs_new_protected:Npn \chemmacros_elpair:n #1
- {
- \bool_if:NTF \l__chemmacros_elpair_dots_bool
- { \chlewis { 0: } {#1} }
- { \chlewis { 0| } {#1} }
- }
-
-\bool_new:N \l__chemmacros_nucleophile_elpair_bool
-\bool_new:N \l__chemmacros_elpair_dots_bool
-
-\ChemCompatibilityFrom{5.3}
-\dim_new:N \l__chemmacros_nucleophile_dim
-\dim_set:Nn \l__chemmacros_nucleophile_dim { .1em }
-
-\chemmacros_define_keys:nn {particles}
- {
- space .dim_set:N = \l__chemmacros_nucleophile_dim
- }
-\EndChemCompatibility
-
-\chemmacros_define_keys:nn {particles}
- {
- elpair .choice: ,
- elpair / false .code:n =
- { \bool_set_false:N \l__chemmacros_nucleophile_elpair_bool } ,
- elpair / dots .code:n =
- {
- \bool_set_true:N \l__chemmacros_nucleophile_elpair_bool
- \bool_set_true:N \l__chemmacros_elpair_dots_bool
- } ,
- elpair / dash .code:n =
- {
- \bool_set_true:N \l__chemmacros_nucleophile_elpair_bool
- \bool_set_false:N \l__chemmacros_elpair_dots_bool
- } ,
- elpair .default:n = dots
- }
-
-\cs_new_protected:Npn \chemmacros_declare_nucleophile:Nn #1#2
- {
- \cs_set_protected:cpn {__chemmacros_ \chemmacros_remove_backslash:N #1:}
- {
- \bool_if:NTF \l__chemmacros_nucleophile_elpair_bool
- {
- \chemmacros_elpair:n { #2 }
- \chemmacros_if_compatibility:nnT {>=} {5.3}
- { \skip_horizontal:N \l__chemmacros_nucleophile_dim }
- \chemmacros_chemformula:n { {}^{-} }
- }
- { \chemmacros_chemformula:n { #2^{-} } }
- }
- \DeclareDocumentCommand #1 {o}
- {
- \group_begin:
- \IfNoValueF {##1}
- { \chemmacros_set_keys:nn {particles} {##1} }
- \use:c {__chemmacros_ \chemmacros_remove_backslash:N #1:}
- \group_end:
- }
- }
-
-\NewChemMacroset {Nucleophile} {mm}
- { \chemmacros_declare_nucleophile:Nn #1 {#2} }
-
-% --------------------------------------------------------------------------
-% particles:
-\NewChemParticle \el { e^- }
-\NewChemParticle \prt { p^+ }
-\NewChemParticle \ntr { n^0 }
-
-% ions, molecules
-% proton, hydroxide, hydronium/oxonium, water:
-\NewChemParticle \Hpl { H^+ }
-\NewChemParticle \Hyd { OH^- }
-\NewChemParticle \Oxo { H_3O^+ }
-\NewChemParticle \water { H_2O }
-
-% electrophile:
-\NewChemParticle \El { E^+ }
-
-% nucleophiles:
-\NewChemNucleophile \Nuc {Nu}
-\NewChemNucleophile \ba {ba}
-
-\ChemCompatibilityTo{5.3}
- \DeclareChemDeprecated \Hto \Oxo
- \DeclareChemDeprecated \Nu \Nuc
-\EndChemCompatibility
-
-% --------------------------------------------------------------------------
-\file_input_stop:
-2016/01/13 - new option particles/space
-2016/04/02 - adapt to formula methods `chemist' and `chemfig'