%% %% This is file `l3expan.sty', %% generated with the docstrip utility. %% %% The original source files were: %% %% l3expan.dtx (with options: `package') %% %% EXPERIMENTAL CODE %% %% Do not distribute this file without also distributing the %% source files specified above. %% %% Do not distribute a modified version of this file. %% %% File: l3expan.dtx Copyright (C) 1990-2012 The LaTeX3 project %% %% It may be distributed and/or modified under the conditions of the %% LaTeX Project Public License (LPPL), either version 1.3c of this %% license or (at your option) any later version. The latest version %% of this license is in the file %% %% http://www.latex-project.org/lppl.txt %% %% This file is part of the "l3kernel bundle" (The Work in LPPL) %% and all files in that bundle must be distributed together. %% %% The released version of this bundle is available from CTAN. %% %% ----------------------------------------------------------------------- %% %% The development version of the bundle can be found at %% %% http://www.latex-project.org/svnroot/experimental/trunk/ %% %% for those people who are interested. %% %%%%%%%%%%% %% NOTE: %% %%%%%%%%%%% %% %% Snapshots taken from the repository represent work in progress and may %% not work or may contain conflicting material! We therefore ask %% people _not_ to put them into distributions, archives, etc. without %% prior consultation with the LaTeX3 Project. %% %% ----------------------------------------------------------------------- \RequirePackage{l3bootstrap} \GetIdInfo$Id: l3expan.dtx 4458 2013-02-03 15:49:37Z bruno $ {L3 Argument expansion} \ProvidesExplPackage {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription} \__expl_package_check: \cs_new:Npn \__exp_arg_next:nnn #1#2#3 { #2 \::: { #3 {#1} } } \cs_new:Npn \__exp_arg_next:Nnn #1#2#3 { #2 \::: { #3 #1 } } \cs_new:Npn \::: #1 {#1} \cs_new:Npn \::n #1 \::: #2#3 { #1 \::: { #2 {#3} } } \cs_new:Npn \::N #1 \::: #2#3 { #1 \::: {#2#3} } \cs_new:Npn \::p #1 \::: #2#3# { #1 \::: {#2#3} } \cs_new:Npn \::c #1 \::: #2#3 { \exp_after:wN \__exp_arg_next:Nnn \cs:w #3 \cs_end: {#1} {#2} } \cs_new:Npn \::o #1 \::: #2#3 { \exp_after:wN \__exp_arg_next:nnn \exp_after:wN {#3} {#1} {#2} } \cs_new:Npn \::f #1 \::: #2#3 { \exp_after:wN \__exp_arg_next:nnn \exp_after:wN { \tex_romannumeral:D -`0 #3 } {#1} {#2} } \use:nn { \cs_new_eq:NN \exp_stop_f: } { ~ } \cs_new_protected:Npn \::x #1 \::: #2#3 { \cs_set_nopar:Npx \l__exp_internal_tl { {#3} } \exp_after:wN \__exp_arg_next:nnn \l__exp_internal_tl {#1} {#2} } \cs_new:Npn \::V #1 \::: #2#3 { \exp_after:wN \__exp_arg_next:nnn \exp_after:wN { \tex_romannumeral:D \__exp_eval_register:N #3 } {#1} {#2} } \cs_new:Npn \::v # 1\::: #2#3 { \exp_after:wN \__exp_arg_next:nnn \exp_after:wN { \tex_romannumeral:D \__exp_eval_register:c {#3} } {#1} {#2} } \cs_new:Npn \__exp_eval_register:N #1 { \exp_after:wN \if_meaning:w \exp_not:N #1 #1 \if_meaning:w \scan_stop: #1 \__exp_eval_error_msg:w \fi: \else: \exp_after:wN \use_i_ii:nnn \fi: \exp_after:wN \c_zero \tex_the:D #1 } \cs_new:Npn \__exp_eval_register:c #1 { \exp_after:wN \__exp_eval_register:N \cs:w #1 \cs_end: } \cs_new:Npn \__exp_eval_error_msg:w #1 \tex_the:D #2 { \fi: \fi: \__msg_kernel_expandable_error:nnn { kernel } { bad-variable } {#2} \c_zero } \cs_new:Npn \exp_args:No #1#2 { \exp_after:wN #1 \exp_after:wN {#2} } \cs_new:Npn \exp_args:NNo #1#2#3 { \exp_after:wN #1 \exp_after:wN #2 \exp_after:wN {#3} } \cs_new:Npn \exp_args:NNNo #1#2#3#4 { \exp_after:wN #1 \exp_after:wN#2 \exp_after:wN #3 \exp_after:wN {#4} } \cs_new:Npn \exp_args:NNc #1#2#3 { \exp_after:wN #1 \exp_after:wN #2 \cs:w # 3\cs_end: } \cs_new:Npn \exp_args:Ncc #1#2#3 { \exp_after:wN #1 \cs:w #2 \exp_after:wN \cs_end: \cs:w #3 \cs_end: } \cs_new:Npn \exp_args:Nccc #1#2#3#4 { \exp_after:wN #1 \cs:w #2 \exp_after:wN \cs_end: \cs:w #3 \exp_after:wN \cs_end: \cs:w #4 \cs_end: } \cs_new:Npn \exp_args:Nf #1#2 { \exp_after:wN #1 \exp_after:wN { \tex_romannumeral:D -`0 #2 } } \cs_new:Npn \exp_args:Nv #1#2 { \exp_after:wN #1 \exp_after:wN { \tex_romannumeral:D \__exp_eval_register:c {#2} } } \cs_new:Npn \exp_args:NV #1#2 { \exp_after:wN #1 \exp_after:wN { \tex_romannumeral:D \__exp_eval_register:N #2 } } \cs_new:Npn \exp_args:NNf #1#2#3 { \exp_after:wN #1 \exp_after:wN #2 \exp_after:wN { \tex_romannumeral:D -`0 #3 } } \cs_new:Npn \exp_args:NNv #1#2#3 { \exp_after:wN #1 \exp_after:wN #2 \exp_after:wN { \tex_romannumeral:D \__exp_eval_register:c {#3} } } \cs_new:Npn \exp_args:NNV #1#2#3 { \exp_after:wN #1 \exp_after:wN #2 \exp_after:wN { \tex_romannumeral:D \__exp_eval_register:N #3 } } \cs_new:Npn \exp_args:Nco #1#2#3 { \exp_after:wN #1 \cs:w #2 \exp_after:wN \cs_end: \exp_after:wN {#3} } \cs_new:Npn \exp_args:Ncf #1#2#3 { \exp_after:wN #1 \cs:w #2 \exp_after:wN \cs_end: \exp_after:wN { \tex_romannumeral:D -`0 #3 } } \cs_new:Npn \exp_args:NVV #1#2#3 { \exp_after:wN #1 \exp_after:wN { \tex_romannumeral:D \exp_after:wN \__exp_eval_register:N \exp_after:wN #2 \exp_after:wN } \exp_after:wN { \tex_romannumeral:D \__exp_eval_register:N #3 } } \cs_new:Npn \exp_args:NNNV #1#2#3#4 { \exp_after:wN #1 \exp_after:wN #2 \exp_after:wN #3 \exp_after:wN { \tex_romannumeral:D \__exp_eval_register:N #4 } } \cs_new:Npn \exp_args:NcNc #1#2#3#4 { \exp_after:wN #1 \cs:w #2 \exp_after:wN \cs_end: \exp_after:wN #3 \cs:w #4 \cs_end: } \cs_new:Npn \exp_args:NcNo #1#2#3#4 { \exp_after:wN #1 \cs:w #2 \exp_after:wN \cs_end: \exp_after:wN #3 \exp_after:wN {#4} } \cs_new:Npn \exp_args:Ncco #1#2#3#4 { \exp_after:wN #1 \cs:w #2 \exp_after:wN \cs_end: \cs:w #3 \exp_after:wN \cs_end: \exp_after:wN {#4} } \cs_new_protected_nopar:Npn \exp_args:Nx { \::x \::: } \cs_new_nopar:Npn \exp_args:Nnc { \::n \::c \::: } \cs_new_nopar:Npn \exp_args:Nfo { \::f \::o \::: } \cs_new_nopar:Npn \exp_args:Nff { \::f \::f \::: } \cs_new_nopar:Npn \exp_args:Nnf { \::n \::f \::: } \cs_new_nopar:Npn \exp_args:Nno { \::n \::o \::: } \cs_new_nopar:Npn \exp_args:NnV { \::n \::V \::: } \cs_new_nopar:Npn \exp_args:Noo { \::o \::o \::: } \cs_new_nopar:Npn \exp_args:Nof { \::o \::f \::: } \cs_new_nopar:Npn \exp_args:Noc { \::o \::c \::: } \cs_new_protected_nopar:Npn \exp_args:NNx { \::N \::x \::: } \cs_new_protected_nopar:Npn \exp_args:Ncx { \::c \::x \::: } \cs_new_protected_nopar:Npn \exp_args:Nnx { \::n \::x \::: } \cs_new_protected_nopar:Npn \exp_args:Nox { \::o \::x \::: } \cs_new_protected_nopar:Npn \exp_args:Nxo { \::x \::o \::: } \cs_new_protected_nopar:Npn \exp_args:Nxx { \::x \::x \::: } \cs_new_nopar:Npn \exp_args:NNno { \::N \::n \::o \::: } \cs_new_nopar:Npn \exp_args:NNoo { \::N \::o \::o \::: } \cs_new_nopar:Npn \exp_args:Nnnc { \::n \::n \::c \::: } \cs_new_nopar:Npn \exp_args:Nnno { \::n \::n \::o \::: } \cs_new_nopar:Npn \exp_args:Nooo { \::o \::o \::o \::: } \cs_new_protected_nopar:Npn \exp_args:NNnx { \::N \::n \::x \::: } \cs_new_protected_nopar:Npn \exp_args:NNox { \::N \::o \::x \::: } \cs_new_protected_nopar:Npn \exp_args:Nnnx { \::n \::n \::x \::: } \cs_new_protected_nopar:Npn \exp_args:Nnox { \::n \::o \::x \::: } \cs_new_protected_nopar:Npn \exp_args:Nccx { \::c \::c \::x \::: } \cs_new_protected_nopar:Npn \exp_args:Ncnx { \::c \::n \::x \::: } \cs_new_protected_nopar:Npn \exp_args:Noox { \::o \::o \::x \::: } \cs_new:Npn \__exp_arg_last_unbraced:nn #1#2 { #2#1 } \cs_new:Npn \::f_unbraced \::: #1#2 { \exp_after:wN \__exp_arg_last_unbraced:nn \exp_after:wN { \tex_romannumeral:D -`0 #2 } {#1} } \cs_new:Npn \::o_unbraced \::: #1#2 { \exp_after:wN \__exp_arg_last_unbraced:nn \exp_after:wN {#2} {#1} } \cs_new:Npn \::V_unbraced \::: #1#2 { \exp_after:wN \__exp_arg_last_unbraced:nn \exp_after:wN { \tex_romannumeral:D \__exp_eval_register:N #2 } {#1} } \cs_new:Npn \::v_unbraced \::: #1#2 { \exp_after:wN \__exp_arg_last_unbraced:nn \exp_after:wN { \tex_romannumeral:D \__exp_eval_register:c {#2} } {#1} } \cs_new_protected:Npn \::x_unbraced \::: #1#2 { \cs_set_nopar:Npx \l__exp_internal_tl { \exp_not:n {#1} #2 } \l__exp_internal_tl } \cs_new:Npn \exp_last_unbraced:NV #1#2 { \exp_after:wN #1 \tex_romannumeral:D \__exp_eval_register:N #2 } \cs_new:Npn \exp_last_unbraced:Nv #1#2 { \exp_after:wN #1 \tex_romannumeral:D \__exp_eval_register:c {#2} } \cs_new:Npn \exp_last_unbraced:No #1#2 { \exp_after:wN #1 #2 } \cs_new:Npn \exp_last_unbraced:Nf #1#2 { \exp_after:wN #1 \tex_romannumeral:D -`0 #2 } \cs_new:Npn \exp_last_unbraced:Nco #1#2#3 { \exp_after:wN #1 \cs:w #2 \exp_after:wN \cs_end: #3 } \cs_new:Npn \exp_last_unbraced:NcV #1#2#3 { \exp_after:wN #1 \cs:w #2 \exp_after:wN \cs_end: \tex_romannumeral:D \__exp_eval_register:N #3 } \cs_new:Npn \exp_last_unbraced:NNV #1#2#3 { \exp_after:wN #1 \exp_after:wN #2 \tex_romannumeral:D \__exp_eval_register:N #3 } \cs_new:Npn \exp_last_unbraced:NNo #1#2#3 { \exp_after:wN #1 \exp_after:wN #2 #3 } \cs_new:Npn \exp_last_unbraced:NNNV #1#2#3#4 { \exp_after:wN #1 \exp_after:wN #2 \exp_after:wN #3 \tex_romannumeral:D \__exp_eval_register:N #4 } \cs_new:Npn \exp_last_unbraced:NNNo #1#2#3#4 { \exp_after:wN #1 \exp_after:wN #2 \exp_after:wN #3 #4 } \cs_new_nopar:Npn \exp_last_unbraced:Nno { \::n \::o_unbraced \::: } \cs_new_nopar:Npn \exp_last_unbraced:Noo { \::o \::o_unbraced \::: } \cs_new_nopar:Npn \exp_last_unbraced:Nfo { \::f \::o_unbraced \::: } \cs_new_nopar:Npn \exp_last_unbraced:NnNo { \::n \::N \::o_unbraced \::: } \cs_new_protected_nopar:Npn \exp_last_unbraced:Nx { \::x_unbraced \::: } \cs_new:Npn \exp_last_two_unbraced:Noo #1#2#3 { \exp_after:wN \__exp_last_two_unbraced:noN \exp_after:wN {#3} {#2} #1 } \cs_new:Npn \__exp_last_two_unbraced:noN #1#2#3 { \exp_after:wN #3 #2 #1 } \cs_new:Npn \exp_not:o #1 { \etex_unexpanded:D \exp_after:wN {#1} } \cs_new:Npn \exp_not:c #1 { \exp_after:wN \exp_not:N \cs:w #1 \cs_end: } \cs_new:Npn \exp_not:f #1 { \etex_unexpanded:D \exp_after:wN { \tex_romannumeral:D -`0 #1 } } \cs_new:Npn \exp_not:V #1 { \etex_unexpanded:D \exp_after:wN { \tex_romannumeral:D \__exp_eval_register:N #1 } } \cs_new:Npn \exp_not:v #1 { \etex_unexpanded:D \exp_after:wN { \tex_romannumeral:D \__exp_eval_register:c {#1} } } \cs_new_protected:Npn \cs_generate_variant:Nn #1#2 { \__chk_if_exist_cs:N #1 \__cs_generate_variant:N #1 \exp_after:wN \__cs_split_function:NN \exp_after:wN #1 \exp_after:wN \__cs_generate_variant:nnNN \exp_after:wN #1 \etex_detokenize:D {#2} , \scan_stop: , \q_recursion_stop } \group_begin: \tex_catcode:D `\M = 12 \scan_stop: \tex_catcode:D `\A = 12 \scan_stop: \tex_catcode:D `\P = 12 \scan_stop: \tex_catcode:D `\R = 12 \scan_stop: \tex_lowercase:D { \group_end: \cs_new_protected:Npn \__cs_generate_variant:N #1 { \exp_after:wN \if_meaning:w \exp_not:N #1 #1 \cs_set_eq:NN \__cs_tmp:w \cs_new_protected_nopar:Npx \else: \exp_after:wN \__cs_generate_variant:ww \token_to_meaning:N #1 MA \q_mark \q_mark \cs_new_protected_nopar:Npx PR \q_mark \cs_new_nopar:Npx \q_stop \fi: } \cs_new_protected:Npn \__cs_generate_variant:ww #1 MA #2 \q_mark { \__cs_generate_variant:wwNw #1 } \cs_new_protected:Npn \__cs_generate_variant:wwNw #1 PR #2 \q_mark #3 #4 \q_stop { \cs_set_eq:NN \__cs_tmp:w #3 } } \cs_new_protected:Npn \__cs_generate_variant:nnNN #1#2#3#4 { \if_meaning:w \c_false_bool #3 \__msg_kernel_error:nnx { kernel } { missing-colon } { \token_to_str:c {#1} } \exp_after:wN \use_none_delimit_by_q_recursion_stop:w \fi: \__cs_generate_variant:Nnnw #4 {#1}{#2} } \cs_new_protected:Npn \__cs_generate_variant:Nnnw #1#2#3#4 , { \if_meaning:w \scan_stop: #4 \exp_after:wN \use_none_delimit_by_q_recursion_stop:w \fi: \use:x { \exp_not:N \__cs_generate_variant:wwNN \__cs_generate_variant_loop:nNwN { } #4 \__cs_generate_variant_loop_end:nwwwNNnn \q_mark #3 ~ { ~ { } \fi: \__cs_generate_variant_loop_long:wNNnn } ~ { } \q_stop \exp_not:N #1 {#2} {#4} } \__cs_generate_variant:Nnnw #1 {#2} {#3} } \cs_new:Npn \__cs_generate_variant_loop:nNwN #1#2#3 \q_mark #4 { \if:w #2 #4 \exp_after:wN \__cs_generate_variant_loop_same:w \else: \if:w N #4 \else: \if:w n #4 \else: \__cs_generate_variant_loop_invalid:NNwNNnn #4#2 \fi: \fi: \fi: #1 \prg_do_nothing: #2 \__cs_generate_variant_loop:nNwN { } #3 \q_mark } \cs_new:Npn \__cs_generate_variant_loop_same:w #1 \prg_do_nothing: #2#3#4 { #3 { #1 \__cs_generate_variant_same:N #2 } } \cs_new:Npn \__cs_generate_variant_loop_end:nwwwNNnn #1#2 \q_mark #3 ~ #4 \q_stop #5#6#7#8 { \scan_stop: \scan_stop: \fi: \exp_not:N \q_mark \exp_not:N \q_stop \exp_not:N #6 \exp_not:c { #7 : #8 #1 #3 } } \cs_new:Npn \__cs_generate_variant_loop_long:wNNnn #1 \q_stop #2#3#4#5 { \exp_not:n { \q_mark \__msg_kernel_error:nnxx { kernel } { variant-too-long } {#5} { \token_to_str:N #3 } \use_none:nnnn \q_stop #3 #3 } } \cs_new:Npn \__cs_generate_variant_loop_invalid:NNwNNnn #1#2 \fi: \fi: \fi: #3 \q_stop #4#5#6#7 { \fi: \fi: \fi: \exp_not:n { \q_mark \__msg_kernel_error:nnxxxx { kernel } { invalid-variant } {#7} { \token_to_str:N #5 } {#1} {#2} \use_none:nnnn \q_stop #5 #5 } } \cs_new:Npn \__cs_generate_variant_same:N #1 { \if:w N #1 N \else: \if:w p #1 p \else: n \fi: \fi: } \cs_new_protected:Npn \__cs_generate_variant:wwNN #1 \q_mark #2 \q_stop #3#4 { #2 \cs_if_free:NTF #4 { \group_begin: \__cs_generate_internal_variant:n {#1} \__cs_tmp:w #4 { \exp_not:c { exp_args:N #1 } \exp_not:N #3 } \group_end: } { \iow_log:x { Variant~\token_to_str:N #4~% already~defined;~ not~ changing~ it~on~line~% \tex_the:D \tex_inputlineno:D } } } \group_begin: \tex_catcode:D `\X = 12 \scan_stop: \tex_lccode:D `\N = `\N \scan_stop: \tex_lowercase:D { \group_end: \cs_new_protected:Npn \__cs_generate_internal_variant:n #1 { \__cs_generate_internal_variant:wwnNwnn #1 \q_mark { \cs_set_eq:NN \__cs_tmp:w \cs_new_protected_nopar:Npx } \cs_new_protected_nopar:cpx X \q_mark { } \cs_new_nopar:cpx \q_stop { exp_args:N #1 } { \__cs_generate_internal_variant_loop:n #1 { : \use_i:nn } } } \cs_new_protected:Npn \__cs_generate_internal_variant:wwnNwnn #1 X #2 \q_mark #3 #4 #5 \q_stop #6 #7 { #3 \cs_if_free:cT {#6} { #4 {#6} {#7} } } } \cs_new:Npn \__cs_generate_internal_variant_loop:n #1 { \exp_after:wN \exp_not:N \cs:w :: #1 \cs_end: \__cs_generate_internal_variant_loop:n } \cs_generate_variant:Nn \str_if_eq_p:nn { V , o } \cs_generate_variant:Nn \str_if_eq_p:nn { nV , no , VV } \cs_generate_variant:Nn \str_if_eq:nnT { V , o } \cs_generate_variant:Nn \str_if_eq:nnT { nV , no , VV } \cs_generate_variant:Nn \str_if_eq:nnF { V , o } \cs_generate_variant:Nn \str_if_eq:nnF { nV , no , VV } \cs_generate_variant:Nn \str_if_eq:nnTF { V , o } \cs_generate_variant:Nn \str_if_eq:nnTF { nV , no , VV } \cs_generate_variant:Nn \str_case:nnn { o } %% %% %% End of file `l3expan.sty'.