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/* errors.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 ERRORS_H
# define ERRORS_H
/*
The global variable |interaction| has four settings, representing increasing
amounts of user interaction:
*/
typedef enum {
batch_mode = 0, /* omits all stops and omits terminal output */
nonstop_mode = 1, /* omits all stops */
scroll_mode = 2, /* omits error stops */
error_stop_mode = 3, /* stops at every opportunity to interact */
unspecified_mode = 4, /* extra value for command-line switch */
} interaction_settings;
extern int interaction; /* current level of interaction */
extern int interactionoption; /* set from command line */
extern void initialize_errors(void);
extern char *last_error;
extern char *last_lua_error;
extern char *last_warning_tag;
extern char *last_warning_str;
extern char *last_error_context;
extern void set_last_error_context(void);
extern void print_err(const char *s);
extern void fixup_selector(boolean log_opened);
extern boolean deletions_allowed;
extern boolean set_box_allowed;
extern int history;
extern int error_count;
extern int interrupt;
extern boolean OK_to_interrupt;
typedef enum {
spotless = 0, /* |history| value when nothing has been amiss yet */
warning_issued = 1, /* |history| value when |begin_diagnostic| has been called */
error_message_issued = 2, /* |history| value when |error| has been called */
fatal_error_stop = 3, /* |history| value when termination was premature */
} error_states;
extern const char *help_line[7]; /* helps for the next |error| */
extern boolean use_err_help; /* should the |err_help| list be shown? */
/* these macros are just temporary, until everything is in C */
# define hlp1(A) help_line[0]=A
# define hlp2(A,B) help_line[1]=A; hlp1(B)
# define hlp3(A,B,C) help_line[2]=A; hlp2(B,C)
# define hlp4(A,B,C,D) help_line[3]=A; hlp3(B,C,D)
# define hlp5(A,B,C,D,E) help_line[4]=A; hlp4(B,C,D,E)
# define hlp6(A,B,C,D,E,F) help_line[5]=A; hlp5(B,C,D,E,F)
# define help0() help_line[0]=NULL /* sometimes there might be no help */
# define help1(A) do { help_line[1]=NULL; hlp1(A); } while (0)
# define help2(A,B) do { help_line[2]=NULL; hlp2(B,A); } while (0)
# define help3(A,B,C) do { help_line[3]=NULL; hlp3(C,B,A); } while (0)
# define help4(A,B,C,D) do { help_line[4]=NULL; hlp4(D,C,B,A); } while (0)
# define help5(A,B,C,D,E) do { help_line[5]=NULL; hlp5(E,D,C,B,A); } while (0)
# define help6(A,B,C,D,E,F) do { help_line[6]=NULL; hlp6(F,E,D,C,B,A); } while (0)
extern void do_final_end(void);
extern void jump_out(void);
extern void error(void);
extern void int_error(int n);
extern void normalize_selector(void);
extern void succumb(void);
extern void fatal_error(const char *s);
extern void overflow(const char *s, unsigned int n);
extern void confusion(const char *s);
extern void check_interrupt(void);
extern void pause_for_instructions(void);
extern void tex_error(const char *msg, const char **hlp);
extern void normal_error(const char *t, const char *p);
extern void normal_warning(const char *t, const char *p);
extern void formatted_error(const char *t, const char *fmt, ...);
extern void formatted_warning(const char *t, const char *fmt, ...);
extern void back_error(void);
extern void ins_error(void);
extern void flush_err(void);
extern void char_warning(internal_font_number f, int c);
extern void wrapup_backend(void);
#endif
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