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diff --git a/macros/latex/contrib/ebproof/ebproof.sty b/macros/latex/contrib/ebproof/ebproof.sty deleted file mode 100644 index 7601f8e9e8..0000000000 --- a/macros/latex/contrib/ebproof/ebproof.sty +++ /dev/null @@ -1,767 +0,0 @@ -% The ebproof package - Formal proofs in the style of sequent calculus - -%% ebproof.sty -%% Copyright 2017 Emmanuel Beffara <manu@beffara.org> - -% This work may be distributed and/or modified under the -% conditions of the LaTeX Project Public License, either version 1.3 -% 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 2005/12/01 or later. - -% This work has the LPPL maintenance status `maintained'. - -% The Current Maintainer of this work is Emmanuel Beffara. - -% This work consists of the files ebproof.sty and ebproof.tex. - -\NeedsTeXFormat{LaTeX2e} -\RequirePackage{expl3} -\RequirePackage{xparse} -\ProvidesExplPackage{ebproof}{2017/05/17}{2.0}{EB's proof trees} - - -%% Parameters - -%%% Declaration of the parameters - -\keys_define:nn { ebproof } { - -% general shape - -center .bool_set:N = \l_ebproof_center_bool, - -proof~style .choice: , -proof~style / upwards .code:n = \bool_set_false:N \l_ebproof_updown_bool, -proof~style / downwards .code:n = \bool_set_true:N \l_ebproof_updown_bool, - -% spacing - -separation .dim_set:N = \l_ebproof_separation_dim, -rule~margin .dim_set:N = \l_ebproof_rule_margin_dim, - -% shape of inference lines - -rule~thickness .dim_set:N = \l_ebproof_rule_thickness_dim, -rule~separation .dim_set:N = \l_ebproof_rule_separation_dim, -rule~dash~length .dim_set:N = \l_ebproof_rule_dash_length_dim, -rule~dash~space .dim_set:N = \l_ebproof_rule_dash_space_dim, -rule~code .tl_set:N = \l_ebproof_rule_code_tl, - -rule~style .choice:, - -% templates - -template .tl_set:N = \l_ebproof_template_tl, -left~template .tl_set:N = \l_ebproof_left_template_tl, -right~template .tl_set:N = \l_ebproof_right_template_tl, - -% labels - -left~label .tl_set:N = \l_ebproof_left_label_tl, -right~label .tl_set:N = \l_ebproof_right_label_tl, -left~label~template .tl_set:N = \l_ebproof_left_label_template_tl, -right~label~template .tl_set:N = \l_ebproof_right_label_template_tl, -label~separation .dim_set:N = \l_ebproof_label_separation_dim, -label~axis .dim_set:N = \l_ebproof_label_axis_dim, - -} - -%%% Rule styles - -\NewDocumentCommand \ebproofnewrulestyle { mm } { - \keys_define:nn { ebproof } { - rule~style / #1 .meta:nn = { ebproof } { #2 } - } -} - -\ebproofnewrulestyle { simple } { - rule~code = { \tex_hrule:D height \l_ebproof_rule_thickness_dim } -} - -\ebproofnewrulestyle { no~rule } { - rule~code = -} - -\ebproofnewrulestyle { double } { - rule~code = { - \tex_hrule:D height \l_ebproof_rule_thickness_dim - \skip_vertical:N \l_ebproof_rule_separation_dim - \tex_hrule:D height \l_ebproof_rule_thickness_dim - } -} - -\ebproofnewrulestyle { dashed } { - rule~code = { - \hbox_to_wd:nn { \tex_hsize:D } { - \dim_set:Nn \l_tmpa_dim { \l_ebproof_rule_dash_space_dim / 2 } - \skip_horizontal:n { -\l_tmpa_dim } - \tex_cleaders:D \hbox:n { - \skip_horizontal:N \l_tmpa_dim - \tex_vrule:D - height \l_ebproof_rule_thickness_dim - width \l_ebproof_rule_dash_length_dim - \skip_horizontal:N \l_tmpa_dim - }\tex_hfill:D - \skip_horizontal:n { -\l_tmpa_dim } - } - } -} - -%%% Default values - -\keys_set:nn { ebproof } { - center = true, - proof~style = upwards, - separation = 1.5em, - rule~margin = .7ex, - rule~thickness = .4pt, - rule~separation = 2pt, - rule~dash~length = .2em, - rule~dash~space = .3em, - rule~style = simple, - template = $\inserttext$, - left~template = $\inserttext\mathrel{}$, - right~template = $\mathrel{}\inserttext$, - left~label = , - right~label = , - left~label~template = \inserttext, - right~label~template = \inserttext, - label~separation = 0.5em, - label~axis = 0.5ex -} - -%%% Defining style macros - -\NewDocumentCommand \ebproofnewstyle { mm } { - \keys_define:nn { ebproof } { #1 .meta:n = { #2 } } -} - - -%% Proof trees - -% Proof trees are represented as a data structure that consists of a box and a -% set of marks, which are vertical positions in the box (as distances from the -% left edge). Arbitrary marks can be defined, the folowing are used for -% alignment: -% - left : the left of the conclusion -% - right : the right of the conclusion -% - axis : the vertical axis of the conclusion - - -%%% Registers - -% TeX does not actually provide data structures, so we have to encode things. -% We provide an allocator for "registers" holding boxes with attributes. Such -% a register consists in a box register and a property list for marks, which -% maps mark names to values as explicit dimensions with units. - -% Create a new register. - -\cs_new:Nn \ebproof_new:N { - \box_new:N #1 - \prop_new:c { l_ebproof_marks_ \__int_value:w #1 _prop } -} - -% Clear a register. - -\cs_new:Nn \ebproof_clear:N { - \hbox_set:Nn #1 {} - % Using \box_clear:N instead would not work because trying to push this box - % on the stack would not actually append any box. - \prop_clear:c { l_ebproof_marks_ \__int_value:w #1 _prop } - \ebproof_set_mark:Nnn #1 { left } { 0pt } - \ebproof_set_mark:Nnn #1 { right } { 0pt } - \ebproof_set_mark:Nnn #1 { axis } { 0pt } -} - - -%%% Mark operations - -% Set the value of a mark. The third argument is a dimension expression. - -\dim_new:N \l_ebproof_transit_dim - -\cs_new:Nn \ebproof_set_mark:Nnn { - \dim_set:Nn \l_ebproof_transit_dim { #3 } - \prop_put:cnV { l_ebproof_marks_ \__int_value:w #1 _prop } { #2 } - \l_ebproof_transit_dim -} - -% Get the value of a mark. This is expandable and can be used in expressions. - -\cs_new:Nn \ebproof_mark:Nn { - \prop_item:cn { l_ebproof_marks_ \__int_value:w #1 _prop } { #2 } -} - -% Shift the marks by a specified amount, without modifying the box. - -\cs_new:Nn \ebproof_shift_x:Nn { - \prop_map_inline:cn { l_ebproof_marks_ \__int_value:w #1 _prop } { - \ebproof_set_mark:Nnn #1 { ##1 } { ##2 + #2 } - } -} - -% Move the left and right marks of the first tree so that they are at least as -% far from the axis as they are in the second tree. For instance if the marks -% are set as -% 1: L---A-------R -% 2: L-------A---R -% then the marks of the first tree are then set as -% 1: L-------A-------R -% The contents of the tree are unchanged. - -\cs_new:Nn \ebproof_enlarge_conclusion:NN { - \dim_set:Nn \l_tmpa_dim { \ebproof_mark:Nn #1 {axis} - + \ebproof_mark:Nn #2 {left} - \ebproof_mark:Nn #2 {axis} } - \dim_compare:nNnT { \l_tmpa_dim } < { \ebproof_mark:Nn #1 {left} } { - \ebproof_set_mark:Nnn #1 {left} { \l_tmpa_dim } } - \dim_set:Nn \l_tmpa_dim { \ebproof_mark:Nn #1 {axis} - + \ebproof_mark:Nn #2 {right} - \ebproof_mark:Nn #2 {axis} } - \dim_compare:nNnT { \l_tmpa_dim } > { \ebproof_mark:Nn #1 {right} } { - \ebproof_set_mark:Nnn #1 {right} { \l_tmpa_dim } } -} - - -%%% Building blocks - -% Make a tree with explicit material in horizontal mode. Set the left and -% right marks to extremal positions and set the axis in the middle. - -\cs_new:Nn \ebproof_make_simple:Nn { - \hbox_set:Nn #1 { #2 } - \ebproof_set_mark:Nnn #1 { left } { 0pt } - \ebproof_set_mark:Nnn #1 { axis } { \box_wd:N #1 / 2 } - \ebproof_set_mark:Nnn #1 { right } { \box_wd:N #1 } -} - -% Make a tree with explicit material in horizontal mode, split in two parts. -% Set the left and right marks to extremal positions and set the axis between -% the two parts. - -\cs_new:Nn \ebproof_make_split:Nnn { - \ebproof_set_mark:Nnn #1 { left } { 0pt } - \hbox_set:Nn #1 { #2 } - \ebproof_set_mark:Nnn #1 { axis } { \box_wd:N #1 } - \hbox_set:Nn #1 { \hbox_unpack:N #1 #3 } - \ebproof_set_mark:Nnn #1 { right } { \box_wd:N #1 } -} - -% Make a tree with explicit material in vertical mode, using an explicit width -% and axis. - -\cs_new:Nn \ebproof_make_vertical:Nnnn { - \ebproof_set_mark:Nnn #1 { left } { 0pt } - \ebproof_set_mark:Nnn #1 { axis } { #2 } - \ebproof_set_mark:Nnn #1 { right } { #3 } - \vbox_set:Nn #1 { - \dim_set:Nn \tex_hsize:D { \ebproof_mark:Nn #1 {right} } - #4 - } - \box_set_wd:Nn #1 { \ebproof_mark:Nn #1 {right} } -} - -%%% Assembling boxes - -% Extend a tree box. The marks are shifted so that alignment is preserved. The -% arguments are dimensions for the left, top, right and bottom sides -% respectively. - -\cs_new:Nn \ebproof_extend:Nnnnn { - \dim_compare:nNnF { #2 } = { 0pt } { - \hbox_set:Nn #1 { - \skip_horizontal:n { #2 } - \box_use:N #1 - } - \ebproof_shift_x:Nn #1 { #2 } - } - \box_set_ht:Nn #1 { \box_ht:N #1 + #3 } - \box_set_wd:Nn #1 { \box_wd:N #1 + #4 } - \box_set_dp:Nn #1 { \box_dp:N #1 + #5 } -} - -% Append the contents of the second tree to the first one on the right, with -% matching baselines. The marks of both trees are preserved. The middle -% argument specifies the space to insert between boxes. - -\cs_new:Nn \ebproof_append_right:NnN { - \hbox_set:Nn #1 { - \box_use:N #1 - \dim_compare:nNnF { #2 } = { 0pt } { \skip_horizontal:n { #2 } } - \box_use:N #3 - } -} - -% Append the contents of the second tree to the first one on the left, with -% matching baselines. The marks of the first tree are shifted accordingly. The -% middle argument specifies the space to insert between boxes. - -\cs_new:Nn \ebproof_append_left:NnN { - \ebproof_shift_x:Nn #1 { \box_wd:N #3 + #2 } - \hbox_set:Nn #1 { - \box_use:N #3 - \dim_compare:nNnF { #2 } = { 0pt } { \skip_horizontal:n { #2 } } - \box_use:N #1 - } -} - -% Shift of two trees to the right so that the axes match. The marks of the one -% that is shifted are updated accordingly. - -\cs_new:Nn \ebproof_align:NN { - \dim_set:Nn \l_tmpa_dim - { \ebproof_mark:Nn #2 {axis} - \ebproof_mark:Nn #1 {axis} } - \dim_compare:nNnTF \l_tmpa_dim < { 0pt } { - \ebproof_extend:Nnnnn #2 { -\l_tmpa_dim } { 0pt } { 0pt } { 0pt } - } { - \ebproof_extend:Nnnnn #1 { \l_tmpa_dim } { 0pt } { 0pt } { 0pt } - } -} - -% Append the contents of the second tree above the first one, with matching -% axes. The marks of the first tree are preserved. - -\cs_new:Nn \ebproof_append_above:NN { - \ebproof_align:NN #1 #2 - \vbox_set:Nn #1 { - \box_use:N #2 - \tex_prevdepth:D -1000pt - \box_use:N #1 - } -} - -% Append the contents of the second tree below the first one, with matching -% axes. The marks of the first tree are preserved. - -\cs_new:Nn \ebproof_append_below:NN { - \ebproof_align:NN #1 #2 - \vbox_set_top:Nn #1 { - \box_use:N #1 - \tex_prevdepth:D -1000pt - \box_use:N #2 - } -} - -% Shift the material in a tree vertically so that the height and depth are -% equal (like TeX's \vcenter but around the baseline). - -\cs_new:Nn \ebproof_vcenter:N { - \dim_set:Nn \l_tmpa_dim { ( \box_ht:N #1 - \box_dp:N #1 ) / 2 } - \box_set_eq:NN \l_tmpa_box #1 - \hbox_set:Nn #1 - { \box_move_down:nn { \l_tmpa_dim } { \box_use:N \l_tmpa_box } } -} - - -%% Making inferences -% -% The following commands use the parameters defined at the beginning of the -% package for actually building proof trees using the commands defined above. - -% Append the contents of the second tree above or below the first one, -% depending on current settings. Axes are aligned and the marks of the first -% tree are preserved. - -\cs_new:Nn \ebproof_append_vertical:NN { - \bool_if:NTF \l_ebproof_updown_bool - { \ebproof_append_below:NN #1 #2 } - { \ebproof_append_above:NN #1 #2 } -} - -% Make a box containing an inference rule with labels, using the current -% settings. The width and axis position are taken as those of the conclusion -% of another tree box. The third argument is used as a temporary register for -% building labels. - -\cs_new:Nn \ebproof_make_rule_for:NNN { - - % Build the rule. - - \ebproof_make_vertical:Nnnn #1 - { \ebproof_mark:Nn #2 {axis} - \ebproof_mark:Nn #2 {left} } - { \ebproof_mark:Nn #2 {right} - \ebproof_mark:Nn #2 {left} } - { - \skip_vertical:N \l_ebproof_rule_margin_dim - \tl_if_empty:NF { \l_ebproof_rule_code_tl } { - \tl_use:N \l_ebproof_rule_code_tl - \skip_vertical:N \l_ebproof_rule_margin_dim - } - } - \ebproof_vcenter:N #1 - - % Append the left label - - \tl_if_blank:VF \l_ebproof_left_label_tl { - \ebproof_make_simple:Nn #3 { - \box_move_down:nn { \l_ebproof_label_axis_dim } { \hbox:n { - \cs_set_eq:NN \inserttext \l_ebproof_left_label_tl - \tl_use:N \l_ebproof_left_label_template_tl - } } - } - \box_set_ht:Nn #3 { 0pt } - \box_set_dp:Nn #3 { 0pt } - \ebproof_append_left:NnN - \l_ebproof_c_box \l_ebproof_label_separation_dim \l_ebproof_d_box - } - - % Append the right label - - \tl_if_blank:VF \l_ebproof_right_label_tl { - \ebproof_make_simple:Nn #3 { - \box_move_down:nn { \l_ebproof_label_axis_dim } { \hbox:n { - \cs_set_eq:NN \inserttext \l_ebproof_right_label_tl - \tl_use:N \l_ebproof_right_label_template_tl - } } - } - \box_set_ht:Nn #3 { 0pt } - \box_set_dp:Nn #3 { 0pt } - \ebproof_append_right:NnN - \l_ebproof_c_box \l_ebproof_label_separation_dim \l_ebproof_d_box - } - -} - - -%% Stack-based interface - -%%% The stack - -% Logically, box structures are stored on a stack. However, TeX does not -% provide data structures for that and the grouping mechanism is not flexible -% enough, so we encode them using what we actually have. A stack for boxes is -% implemented using a global hbox |\g_ebproof_stack_box| that contains all the -% boxes successively. A sequence |\g_ebproof_stack_seq| is used to store the -% dimensions property lists textually. We maintain a counter -% |\g_ebproof_level_int| with the number of elements on the stack, for -% consistency checks. - -\int_new:N \g_ebproof_level_int -\box_new:N \g_ebproof_stack_box -\seq_new:N \g_ebproof_stack_seq - -% Clear the stack. - -\cs_new:Nn \ebproof_clear_stack: { - \int_gset:Nn \g_ebproof_level_int { 0 } - \hbox_gset:Nn \g_ebproof_stack_box { } - \seq_gclear:N \g_ebproof_stack_seq -} - -% Push the contents of a register on the stack. - -\cs_new:Nn \ebproof_push:N { - \int_gincr:N \g_ebproof_level_int - \hbox_gset:Nn \g_ebproof_stack_box - { \hbox_unpack:N \g_ebproof_stack_box \box_use:N #1 } - \seq_gput_left:Nv \g_ebproof_stack_seq - { l_ebproof_marks_ \__int_value:w #1 _prop } -} - -% Pop the value from the top of the stack into a register. - -\cs_new:Nn \ebproof_pop:N { - \int_compare:nNnTF { \g_ebproof_level_int } > { 0 } { - \int_gdecr:N \g_ebproof_level_int - \hbox_gset:Nn \g_ebproof_stack_box { - \hbox_unpack:N \g_ebproof_stack_box - \box_gset_to_last:N \g_tmpa_box - } - \box_set_eq_clear:NN #1 \g_tmpa_box - \seq_gpop_left:NN \g_ebproof_stack_seq \l_tmpa_tl - \tl_set_eq:cN { l_ebproof_marks_ \__int_value:w #1 _prop } \l_tmpa_tl - } { - \PackageError{ebproof}{Missing~premiss~in~a~proof~tree}{} - \ebproof_clear:N #1 - } -} - -%%% Assembling trees - -\ebproof_new:N \l_ebproof_a_box -\ebproof_new:N \l_ebproof_b_box -\ebproof_new:N \l_ebproof_c_box -\ebproof_new:N \l_ebproof_d_box - -% Join horizontally a number of elements at the top of the stack. If several -% trees are joined, use the left mark of the left tree, the right mark of the -% right tree and set the axis in the middle of these marks. - -\cs_new:Nn \ebproof_join_horizontal:n { - \int_case:nnF { #1 } { - { 0 } { - \group_begin: - \ebproof_clear:N \l_ebproof_a_box - \ebproof_push:N \l_ebproof_a_box - \group_end: - } - { 1 } { } - } { - \group_begin: - \ebproof_pop:N \l_ebproof_a_box - \prg_replicate:nn { #1 - 1 } { - \ebproof_pop:N \l_ebproof_b_box - \ebproof_append_left:NnN - \l_ebproof_a_box \l_ebproof_separation_dim \l_ebproof_b_box - } - \ebproof_set_mark:Nnn \l_ebproof_a_box { left } - { \ebproof_mark:Nn \l_ebproof_b_box { left } } - \ebproof_set_mark:Nnn \l_ebproof_a_box { axis } - { ( \ebproof_mark:Nn \l_ebproof_a_box { left } - + \ebproof_mark:Nn \l_ebproof_a_box { right } ) / 2 } - \ebproof_push:N \l_ebproof_a_box - \group_end: - } -} - -% Join vertically the two elements at the top of the stack, with a horizontal -% rule of the appropriate size. - -\cs_new:Nn \ebproof_join_vertical: { - \group_begin: - \ebproof_pop:N \l_ebproof_a_box - \ebproof_pop:N \l_ebproof_b_box - \ebproof_enlarge_conclusion:NN \l_ebproof_b_box \l_ebproof_a_box - \ebproof_make_rule_for:NNN \l_ebproof_c_box \l_ebproof_b_box - \l_ebproof_d_box - \ebproof_append_vertical:NN \l_ebproof_a_box \l_ebproof_c_box - \ebproof_append_vertical:NN \l_ebproof_a_box \l_ebproof_b_box - \ebproof_push:N \l_ebproof_a_box - \group_end: -} - -%%% High-level commands - -% Push a box with default formatting, using explicit alignment if the code -% contains a |&| character - -\cs_new:Npn \ebproof_statement_parse:w #1\ebproof_statement_stop: { - \tl_if_empty:nTF { #3 } { - \ebproof_make_simple:Nn \l_ebproof_a_box - { \cs_set:Npn \inserttext { #1 } \tl_use:N \l_ebproof_template_tl } - } { - \ebproof_make_split:Nnn \l_ebproof_a_box - { \cs_set:Npn \inserttext { #1 } \tl_use:N \l_ebproof_left_template_tl } - { \cs_set:Npn \inserttext { #2 } \tl_use:N \l_ebproof_right_template_tl } - } - \ebproof_push:N \l_ebproof_a_box -} - -\cs_new:Nn \ebproof_push_statement:n { - \ebproof_statement_parse:w #1&& \ebproof_statement_stop: -} - - -%% Document interface - -%%% Functions to define statements - -% The |\g_ebproof_stack_seq| variable contains the list of all defined -% statements. For each statement |X|, there is a document command |\ebproofX| -% and the alias |\X| is defined when entering a |prooftree| environment. - -\seq_new:N \g_ebproof_statements_seq - -% Install the aliases for statements, saving the original value of the control -% sequences. - -\cs_new:Nn \ebproof_setup_statements: { - \seq_map_inline:Nn \g_ebproof_statements_seq { - \cs_set_eq:cc { ebproof_saved_ ##1 } { ##1 } - \cs_set_eq:cc { ##1 } { ebproof ##1 } - } -} - -% Restore the saved meanings of the control sequences. This is useful when -% interpreting user-provided code in statement arguments. The meanings are -% automatically restored when leaving a |prooftree| environment because of -% grouping. - -\cs_new:Nn \ebproof_restore_statements: { - \seq_map_inline:Nn \g_ebproof_statements_seq { - \cs_set_eq:cc { ##1 } { ebproof_saved_ ##1 } - } -} - -% Define a new statement. The first argument is the name, the second one is an -% argument specifier as used by |xparse| and the third one is the body of the -% command. - -\cs_new:Nn \ebproof_new_statement:nnn { - \exp_args:Nc \NewDocumentCommand { ebproof#1 }{ #2 } { #3 } - \seq_put_right:Nn \g_ebproof_statements_seq { #1 } -} - -% Define a deprecated statement. The syntax is the same as above except that -% an extra argument in third position indicates what should be used instead. -% The effect is the same except that a warning message is issued the first -% time the statement is used. - -\cs_new:Nn \ebproof_new_deprecated_statement:nnnn { - \cs_new:cpn { ebproof_#1_warning: } { - \PackageWarning { ebproof } { \token_to_str:c{#1}~is~deprecated,~#3 } - \cs_gset:cn { ebproof_#1_warning: } { } - } - \ebproof_new_statement:nnn { #1 } { #2 } - { \use:c { ebproof_#1_warning: } #4 } -} - - -%%% Basic commands - -\ebproof_new_statement:nnn { set } { m } { - \keys_set:nn { ebproof } { #1 } -} - -\ebproof_new_statement:nnn { hypo } { O{} m } { - \group_begin: - \ebproof_restore_statements: - \keys_set:nn { ebproof } { #1 } - \ebproof_push_statement:n { #2 } - \group_end: -} - -\ebproof_new_statement:nnn { infer } { O{} m O{} m } { - \group_begin: - \ebproof_restore_statements: - \keys_set_known:nnN { ebproof / rule~style } { #1 } \l_tmpa_tl - \keys_set:nV { ebproof } \l_tmpa_tl - \tl_set:Nn \l_ebproof_right_label_tl { #3 } - \ebproof_join_horizontal:n { #2 } - \ebproof_push_statement:n { #4 } - \ebproof_join_vertical: - \group_end: -} - -\ebproof_new_statement:nnn { ellipsis } { m m } { - \group_begin: - \ebproof_restore_statements: - \tl_clear:N \l_ebproof_rule_code_tl - \ebproof_make_split:Nnn \l_ebproof_a_box { } { - \vbox_set:Nn \l_tmpa_box { - \skip_vertical:n { 1.2ex } - \hbox:n { \tex_ignorespaces:D #1 } - \skip_vertical:n { 1.2ex } - } - \vbox_to_ht:nn { \box_ht:N \l_tmpa_box } { - \tex_xleaders:D \vbox_to_ht:nn { .8ex } - { \tex_vss:D \hbox:n { . } \tex_vss:D } - \tex_vfill:D - } - \hbox_overlap_right:n { ~ \box_use:N \l_tmpa_box } - } - \ebproof_push:N \l_ebproof_a_box - \ebproof_join_vertical: - \ebproof_push_statement:n {#2} - \ebproof_join_vertical: - \group_end: -} - - -%%% Modifying trees - -% Rewrite the box at the top of the stack while preserving its dimensions an -% marks. The code is typeset in horizontal mode, with control sequences to -% access the original box and its marks: -% - \treebox is a box register with the original material -% - \treemark{NAME} provides the value of a given mark - -\ebproof_new_statement:nnn { rewrite } { m } { - \group_begin: - \ebproof_restore_statements: - \ebproof_pop:N \l_ebproof_a_box - \box_set_eq:NN \l_tmpa_box \l_ebproof_a_box - \hbox_set:Nn \l_tmpb_box { - \cs_set_eq:NN \treebox \l_tmpa_box - \cs_set:Npn \treemark { \ebproof_mark:Nn \l_ebproof_a_box } - { #1 } - } - \box_set_wd:Nn \l_tmpb_box { \box_wd:N \l_ebproof_a_box } - \box_set_ht:Nn \l_tmpb_box { \box_ht:N \l_ebproof_a_box } - \box_set_dp:Nn \l_tmpb_box { \box_dp:N \l_ebproof_a_box } - \box_set_eq:NN \l_ebproof_a_box \l_tmpb_box - \ebproof_push:N \l_ebproof_a_box - \group_end: -} - -% Insert |\left| and |\right| delimiters without changing the alignment - -\ebproof_new_statement:nnn { delims } { m m } { - \group_begin: - \ebproof_restore_statements: - \ebproof_pop:N \l_ebproof_a_box - \hbox_set:Nn \l_tmpa_box - { $ \tex_vcenter:D { \box_use:N \l_ebproof_a_box } $ } - \dim_set:Nn \l_tmpa_dim - { \box_ht:N \l_tmpa_box - \box_ht:N \l_ebproof_a_box } - \hbox_set:Nn \l_ebproof_a_box { - $ #1 \tex_vrule:D - height \box_ht:N \l_tmpa_box depth \box_dp:N \l_tmpa_box width 0pt - \tex_right:D . $ - } - \ebproof_shift_x:Nn \l_ebproof_a_box { \box_wd:N \l_ebproof_a_box } - \hbox_set:Nn \l_ebproof_a_box { - \hbox_unpack:N \l_ebproof_a_box - $ \tex_left:D . \box_use:N \l_tmpa_box #2 $ - } - \hbox_set:Nn \l_ebproof_a_box - { \box_move_down:nn { \l_tmpa_dim } { \box_use:N \l_ebproof_a_box } } - \ebproof_push:N \l_ebproof_a_box - \group_end: -} - - -%%% Deprecated statements - -% These statements were defined in versions 1.x of the package, they are -% preserved for temporary upwards compatibility and will be removed in a -% future version. - -\ebproof_new_deprecated_statement:nnnn { Alter } { m } - { use~\token_to_str:c{rewrite}~instead } { \ebproofrewrite{ #1 \box\treebox } } -\ebproof_new_deprecated_statement:nnnn { Delims } { } - { use~\token_to_str:c{delims}~instead } { \ebproofdelims } -\ebproof_new_deprecated_statement:nnnn { Ellipsis } { } - { use~\token_to_str:c{ellipsis}~instead } { \ebproofellipsis } -\ebproof_new_deprecated_statement:nnnn { Hypo } { } - { use~\token_to_str:c{hypo}~instead } { \ebproofhypo } -\ebproof_new_deprecated_statement:nnnn { Infer } { } - { use~\token_to_str:c{infer}~instead } { \ebproofinfer } - - -%%% Environment interface - -\ebproof_clear_stack: - -\tl_new:N \l_ebproof_start_level_tl - -\NewDocumentEnvironment { prooftree } { s O{} } { - \keys_set_known:nnN { ebproof / proof~style } { #2 } \l_tmpa_tl - \keys_set:nV { ebproof } \l_tmpa_tl - \tl_set:Nx \l_ebproof_start_level_tl { \int_use:N \g_ebproof_level_int } - \vbox_set:Nw \l_tmpa_box - \ebproof_setup_statements: -} { - \vbox_set_end: - \ebproof_pop:N \l_ebproof_a_box - \int_compare:nNnF { \g_ebproof_level_int } = { \tl_use:N \l_ebproof_start_level_tl } { - \PackageError{ebproof}{Malformed~proof~tree}{ - Some~hypotheses~were~declared~but~not~used~in~this~tree.} - } - \IfBooleanTF { #1 } { - \[ \box_use:N \l_ebproof_a_box \] - \ignorespacesafterend - } { - \hbox_unpack:N \c_empty_box - \bool_if:NTF \l_ebproof_center_bool { - \hbox:n { $ \tex_vcenter:D { \box_use:N \l_ebproof_a_box } $ } - } { - \box_use:N \l_ebproof_a_box - } - } -} - -% A trick for the starred version: -\cs_new:cpn { prooftree* } { \prooftree* } -\cs_new:cpn { endprooftree* } { \endprooftree } |