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Filename : l3luatex.sty
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%%
%% This is file `l3luatex.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% l3luatex.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: l3luatex.dtx Copyright (C) 2010-2012 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: l3luatex.dtx 4049 2012-08-03 14:01:40Z bruno $
  {L3 Experimental LuaTeX-specific functions}
\ProvidesExplPackage
  {\ExplFileName}{\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
\__expl_package_check:
\luatex_if_engine:TF
  {
    \cs_new_eq:NN \lua_now_x:n     \luatex_directlua:D
    \cs_new_eq:NN \lua_shipout_x:n \luatex_latelua:D
  }
  {
    \cs_new:Npn \lua_now_x:n #1
      {
        \__msg_kernel_expandable_error:nnn
          { kernel } { bad-engine } { \lua_now_x:n }
      }
    \cs_new_protected:Npn \lua_shipout_x:n #1
      {
        \__msg_kernel_expandable_error:nnn
          { kernel } { bad-engine } { \lua_shipout_x:n }
      }
  }
\cs_generate_variant:Nn \lua_now_x:n { x }
\cs_new:Npn \lua_now:n #1
  { \lua_now_x:n { \exp_not:n {#1} } }
\cs_generate_variant:Nn \lua_now:n { x }
\cs_generate_variant:Nn \lua_shipout_x:n { x }
\cs_new_protected:Npn \lua_shipout:n #1
  { \lua_shipout_x:n { \exp_not:n {#1} } }
\cs_generate_variant:Nn \lua_shipout:n { x }
\int_new:N  \g__cctab_allocate_int
\int_set:Nn \g__cctab_allocate_int { \c_minus_one }
\int_new:N \g__cctab_stack_int
\seq_new:N \g__cctab_stack_seq
\cs_new_protected:Npn \cctab_new:N #1
  {
    \__chk_if_free_cs:N #1
    \int_gadd:Nn \g__cctab_allocate_int { \c_two }
    \int_compare:nNnTF
      \g__cctab_allocate_int <  { \c_max_register_int + \c_one }
       {
         \tex_global:D \tex_chardef:D #1 \g__cctab_allocate_int
         \luatex_initcatcodetable:D #1
       }
       { \__msg_kernel_fatal:nnx { kernel } { out-of-registers } { cctab } }
  }
\luatex_if_engine:F
  {
    \cs_set_protected:Npn \cctab_new:N #1
      {
        \__msg_kernel_error:nnx { kernel } { bad-engine }
          { \exp_not:N \cctab_new:N }
      }
  }
\luatex_if_engine:T
  {
    \cs_set_protected:Npn \cctab_new:N #1
      {
        \__chk_if_free_cs:N #1
        \newcatcodetable #1
        \luatex_initcatcodetable:D #1
      }
  }
\cs_new_protected:Npn \cctab_begin:N #1
  {
    \seq_gpush:Nx \g__cctab_stack_seq { \tex_the:D \luatex_catcodetable:D }
    \luatex_catcodetable:D #1
    \int_gadd:Nn \g__cctab_stack_int { \c_two }
    \int_compare:nNnT \g__cctab_stack_int > \c_max_register_int
      { \__msg_kernel_fatal:nn { kernel } { cctab-stack-full } }
    \luatex_savecatcodetable:D \g__cctab_stack_int
    \luatex_catcodetable:D \g__cctab_stack_int
  }
\cs_new_protected_nopar:Npn \cctab_end:
  {
    \int_gsub:Nn \g__cctab_stack_int { \c_two }
    \seq_if_empty:NTF \g__cctab_stack_seq
      { \tl_set:Nn \l__cctab_internal_tl { 0 } }
      { \seq_gpop:NN \g__cctab_stack_seq \l__cctab_internal_tl }
    \luatex_catcodetable:D \l__cctab_internal_tl \scan_stop:
  }
\luatex_if_engine:F
  {
    \cs_set_protected:Npn \cctab_begin:N #1
      {
        \__msg_kernel_error:nnxx { kernel } { bad-engine }
          { \exp_not:N \cctab_begin:N } {#1}
      }
    \cs_set_protected_nopar:Npn \cctab_end:
      {
        \__msg_kernel_error:nnx { kernel } { bad-engine }
          { \exp_not:N \cctab_end: }
      }
  }
\luatex_if_engine:T
  {
    \cs_set_protected:Npn \cctab_begin:N #1 { \BeginCatcodeRegime #1 }
    \cs_set_protected_nopar:Npn \cctab_end: { \EndCatcodeRegime }
  }
\tl_new:N \l__cctab_internal_tl
\cs_new_protected:Npn \cctab_gset:Nn #1#2
  {
    \group_begin:
      #2
      \luatex_savecatcodetable:D #1
    \group_end:
  }
\luatex_if_engine:F
  {
    \cs_set_protected:Npn \cctab_gset:Nn #1#2
      {
        \__msg_kernel_error:nnxx { kernel } { bad-engine }
          { \exp_not:N \cctab_gset:Nn } { #1 {#2} }
      }
  }
\luatex_if_engine:T
  {
    \cctab_new:N \c_code_cctab
    \cctab_gset:Nn \c_code_cctab { }
  }
\luatex_if_engine:T
  {
    \cs_new_eq:NN \c_document_cctab \CatcodeTableLaTeX
    \cs_new_eq:NN \c_initex_cctab   \CatcodeTableIniTeX
    \cs_new_eq:NN \c_other_cctab    \CatcodeTableOther
    \cs_new_eq:NN \c_str_cctab      \CatcodeTableString
  }
\__msg_kernel_new:nnnn { kernel } { bad-engine }
  { LuaTeX~engine~not~in~use!~Ignoring~#1. }
  {
    The~feature~you~are~using~is~only~available~
    with~the~LuaTeX~engine.~LaTeX3~ignored~`#1#2'.
  }
\__msg_kernel_new:nnnn { kernel } { cctab-stack-full }
  { The~category~code~table~stack~is~exhausted. }
  {
    LaTeX~has~been~asked~to~switch~to~a~new~category~code~table,~
    but~there~is~no~more~space~to~do~this!
  }
%% 
%%
%% End of file `l3luatex.sty'.