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/* maincontrol.h
Copyright 2009 Taco Hoekwater <taco@luatex.org>
This file is part of LuaTeX.
LuaTeX is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version.
LuaTeX is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU General Public License along
with LuaTeX; if not, see <http://www.gnu.org/licenses/>. */
#ifndef MAINCONTROL_H
# define MAINCONTROL_H
# define fil_code 0 /* identifies \.{\\hfil} and \.{\\vfil} */
# define fill_code 1 /* identifies \.{\\hfill} and \.{\\vfill} */
# define ss_code 2 /* identifies \.{\\hss} and \.{\\vss} */
# define fil_neg_code 3 /* identifies \.{\\hfilneg} and \.{\\vfilneg} */
# define skip_code 4 /* identifies \.{\\hskip} and \.{\\vskip} */
# define mskip_code 5 /* identifies \.{\\mskip} */
/* The |prefixed_command| does not have to adjust |a| so that |a mod 4=0|,
since the following routines test for the \.{\\global} prefix as follows.
*/
# define is_global(a) (a>=4)
# define define(A,B,C) do { \
if (is_global(a)) \
geq_define((A),(quarterword)(B),(C)); \
else \
eq_define((A),(quarterword)(B),(C)); \
} while (0)
# define word_define(A,B) do { \
if (is_global(a)) \
geq_word_define((A),(B)); \
else \
eq_word_define((A),(B)); \
} while (0)
# define define_lc_code(A,B) do { \
if (is_global(a)) \
set_lc_code((A),(B),level_one); \
else \
set_lc_code((A),(B),cur_level); \
} while (0)
# define define_uc_code(A,B) do { \
if (is_global(a)) \
set_uc_code((A),(B),level_one); \
else \
set_uc_code((A),(B),cur_level); \
} while (0)
# define define_sf_code(A,B) do { \
if (is_global(a)) \
set_sf_code((A),(B),level_one); \
else \
set_sf_code((A),(B),cur_level); \
} while (0)
# define define_cat_code(A,B) do { \
if (is_global(a)) \
set_cat_code(int_par(cat_code_table_code),(A),(B),level_one); \
else \
set_cat_code(int_par(cat_code_table_code),(A),(B),cur_level); \
} while (0)
# define define_fam_fnt(A,B,C) do { \
if (is_global(a)) \
def_fam_fnt((A),(B),(C),level_one); \
else \
def_fam_fnt((A),(B),(C),cur_level); \
} while (0)
# define define_math_param(A,B,C) do { \
if (is_global(a)) \
def_math_param((A),(B),(C),level_one); \
else \
def_math_param((A),(B),(C),cur_level); \
} while (0)
extern halfword cur_box; /* box to be placed into its context */
/*
A \.{\\chardef} creates a control sequence whose |cmd| is |char_given|;
a \.{\\mathchardef} creates a control sequence whose |cmd| is |math_given|;
and the corresponding |chr| is the character code or math code. A \.{\\countdef}
or \.{\\dimendef} or \.{\\skipdef} or \.{\\muskipdef} creates a control
sequence whose |cmd| is |assign_int| or \dots\ or |assign_mu_glue|, and the
corresponding |chr| is the |eqtb| location of the internal register in question.
*/
# define char_def_code 0 /* |shorthand_def| for \.{\\chardef} */
# define math_char_def_code 1 /* |shorthand_def| for \.{\\mathchardef} */
# define xmath_char_def_code 2 /* |shorthand_def| for \.{\\Umathchardef} */
# define count_def_code 3 /* |shorthand_def| for \.{\\countdef} */
# define attribute_def_code 4 /* |shorthand_def| for \.{\\attributedef} */
# define dimen_def_code 5 /* |shorthand_def| for \.{\\dimendef} */
# define skip_def_code 6 /* |shorthand_def| for \.{\\skipdef} */
# define mu_skip_def_code 7 /* |shorthand_def| for \.{\\muskipdef} */
# define toks_def_code 8 /* |shorthand_def| for \.{\\toksdef} */
# define umath_char_def_code 9 /* |shorthand_def| for \.{\\Umathcharnumdef} */
extern void adjust_space_factor(void);
extern void main_control(void);
extern void app_space(void);
extern void insert_dollar_sign(void);
extern void insert_dollar_sign_par_end(void);
extern void you_cant(void);
extern void report_illegal_case(void);
extern boolean privileged(void);
extern boolean its_all_over(void);
extern void append_glue(void);
extern void append_kern(void);
extern void off_save(void);
extern void handle_right_brace(void);
extern void extra_right_brace(void);
extern void normal_paragraph(void);
extern void box_end(int box_context);
extern void scan_box(int box_context);
extern void new_graf(boolean indented);
extern void indent_in_hmode(void);
extern void head_for_vmode(void);
extern void end_graf(int);
extern void begin_insert_or_adjust(void);
extern void handle_mark(void);
extern void append_penalty(void);
extern void delete_last(void);
extern void unpackage(void);
extern void append_italic_correction(void);
extern void append_local_box(int kind);
extern void append_discretionary(void);
extern void build_local_box(void);
extern void build_discretionary(void);
extern void make_accent(void);
extern void align_error(void);
extern void no_align_error(void);
extern void omit_error(void);
extern void do_endv(void);
extern void cs_error(void);
extern void prefixed_command(void);
extern void fixup_directions(void);
/* Assignments from Lua need helpers. */
# define is_int_assign(cmd) (cmd==assign_int_cmd)
# define is_attr_assign(cmd) (cmd==assign_attr_cmd)
# define is_dim_assign(cmd) (cmd==assign_dimen_cmd)
# define is_glue_assign(cmd) (cmd==assign_glue_cmd)
# define is_mu_glue_assign(cmd) (cmd==assign_mu_glue_cmd)
# define is_toks_assign(cmd) (cmd==assign_toks_cmd)
# define show_code 0 /* \.{\\show} */
# define show_box_code 1 /* \.{\\showbox} */
# define show_the_code 2 /* \.{\\showthe} */
# define show_lists 3 /* \.{\\showlists} */
# define show_groups 4 /* \.{\\showgroups} */
# define show_tokens 5 /* \.{\\showtokens} , must be odd! */
# define show_ifs 6 /* \.{\\showifs} */
# define print_if_line(A) if ((A)!=0) { \
tprint(" entered on line "); print_int((A)); \
}
extern void get_r_token(void);
extern void assign_internal_value(int a, halfword p, int cur_val);
extern void do_register_command(int a);
extern void alter_aux(void);
extern void alter_prev_graf(void);
extern void alter_page_so_far(void);
extern void alter_integer(void);
extern void alter_box_dimen(void);
extern void new_interaction(void);
extern halfword after_token;
extern void do_assignments(void);
extern void open_or_close_in(void);
extern boolean long_help_seen;
extern void issue_message(void);
extern void give_err_help(void);
extern void shift_case(void);
extern void show_whatever(void);
extern void initialize(void); /* this procedure gets things started properly */
#endif
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