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gambas-source-code/main/gbx/gb_error.c
Benoît Minisini f3df1daa86 [DEVELOPMENT ENVIRONMENT] 
* NEW: Runtime error messages are now translatable. At least those that
  have an error code. Custom error messages coming from component are not
  translatable yet.
* NEW: French translation of runtime error messages.

[INTERPRETER]
* NEW: When running in debugging mode, error messages are formatted to be
  easily translatable.


git-svn-id: svn://localhost/gambas/trunk@2347 867c0c6c-44f3-4631-809d-bfa615b0a4ec
2009-09-22 22:10:38 +00:00

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/***************************************************************************
gb_error.c
(c) 2000-2009 Benoît Minisini <gambas@users.sourceforge.net>
This program 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, or (at your option)
any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
***************************************************************************/
#define __GB_ERROR_C
#include "gb_common.h"
#include <stdarg.h>
#include <ctype.h>
#include "gb_buffer.h"
#include "gb_error.h"
#include "gbx_debug.h"
#include "gbx_exec.h"
#include "gbx_api.h"
//#define DEBUG_ERROR 1
ERROR_CONTEXT *ERROR_current = NULL;
ERROR_INFO ERROR_last = { 0 };
bool ERROR_backtrace = FALSE;
static int _lock = 0;
static const char *_message[66] =
{
/* 0 E_UNKNOWN */ "Unknown error",
/* 1 E_MEMORY */ "Out of memory",
/* 2 E_CLASS */ ".3Cannot load class '&1': &2&3",
/* 3 E_STACK */ "Stack overflow",
/* 4 E_NEPARAM */ "Not enough arguments",
/* 5 E_TMPARAM */ "Too many arguments",
/* 6 E_TYPE */ ".2Type mismatch: wanted &1, got &2 instead",
/* 7 E_OVERFLOW */ "Overflow",
/* 8 E_ILLEGAL */ "Illegal instruction",
/* 9 E_NFUNC */ "Not a function",
/* 10 E_CSTATIC */ ".1Class '&1' is not creatable",
/* 11 E_NSYMBOL */ ".2Unknown symbol '&1' in class '&2'",
/* 12 E_NOBJECT */ "Not an object",
/* 13 E_NULL */ "Null object",
/* 14 E_STATIC */ ".2'&1.&2' is static",
/* 15 E_NREAD */ ".2'&1.&2' is write only",
/* 16 E_NWRITE */ ".2'&1.&2' is read only",
/* 17 E_NPROPERTY */ ".2'&1.&2' is not a property",
/* 18 E_NRETURN */ "No return value",
/* 19 E_MATH*/ "Mathematic error",
/* 20 E_ARG */ "Bad argument",
/* 21 E_BOUND */ "Out of bounds",
/* 22 E_NDIM */ "Bad number of dimensions",
/* 23 E_NARRAY */ "Not an array",
/* 24 E_MAIN */ "No startup method",
/* 25 E_NNEW */ "No instanciation method",
/* 26 E_ZERO */ "Division by zero",
/* 27 E_LIBRARY */ ".2Cannot load component '&1': &2",
/* 28 E_EVENT */ ".3Bad event handler in &1.&2(): &3",
/* 29 E_IOBJECT */ "Invalid object",
/* 30 E_ENUM */ "Not an enumeration",
/* 31 E_UCONV */ "Unsupported string conversion",
/* 32 E_CONV */ "Bad string conversion",
/* 33 E_DATE */ "Invalid date",
/* 34 E_BADPATH */ "Invalid path",
/* 35 E_OPEN */ ".2Cannot open file '&1': &2",
/* 36 E_PROJECT */ ".2Bad project file: line &1: &2",
/* 37 E_FULL */ "Device is full",
/* 38 E_EXIST */ "File already exists", /* &1 */
/* 39 E_EOF */ "End of file",
/* 40 E_FORMAT */ "Bad format string",
/* 41 E_DYNAMIC */ ".2'&1.&2' is not static",
/* 42 E_SYSTEM */ ".2System error #&1: &2",
/* 43 E_ACCESS */ "Access forbidden",
/* 44 E_TOOLONG */ "File name is too long",
/* 45 E_NEXIST */ "File or directory does not exist", /* &1 */
/* 46 E_DIR */ "File is a directory", /* &1 */
/* 47 E_READ */ "Read error",
/* 48 E_WRITE */ "Write error",
/* 49 E_NDIR */ ".1Not a directory: &1",
/* 50 E_REGEXP */ ".1Bad regular expression: &1",
/* 51 E_ARCH */ ".2Bad archive: &1: &2",
/* 52 E_REGISTER */ ".1Cannot register class '&1'",
/* 53 E_CLOSED */ "Stream is closed",
/* 54 E_VIRTUAL */ "Bad use of virtual class",
/* 55 E_STOP */ "STOP instruction encountered",
/* 56 E_STRING */ "Too many simultaneous new strings",
/* 57 E_EVAL */ ".1Bad expression: &1",
/* 58 E_LOCK */ "File is locked",
/* 59 E_PARENT */ "No parent class",
/* 60 E_EXTLIB */ ".2Cannot find dynamic library '&1': &2",
/* 61 E_EXTSYM */ ".2Cannot find symbol '&2' in dynamic library '&1'",
/* 62 E_BYREF */ "Argument cannot be passed by reference",
/* 63 E_OVERRIDE */ ".3'&1.&2' is badly overridden in class '&3'",
/* 64 E_NKEY */ "Void key",
NULL
};
void ERROR_lock()
{
_lock++;
}
void ERROR_unlock()
{
_lock--;
}
void ERROR_reset(ERROR_INFO *info)
{
info->code = 0;
if (info->free)
{
STRING_unref(&info->msg);
info->free = FALSE;
}
info->msg = NULL;
if (info->backtrace)
{
#if DEBUG_ERROR
fprintf(stderr, "ERROR_reset: DEBUG_free_backtrace: <<%p>>\n", info->backtrace);
#endif
DEBUG_free_backtrace(&info->backtrace);
info->backtrace = NULL;
}
}
void ERROR_clear()
{
if (_lock)
{
#if DEBUG_ERROR
fprintf(stderr, "ERROR_clear: (%p) *LOCKED*\n", ERROR_current);
#endif
return;
}
#if DEBUG_ERROR
fprintf(stderr, "ERROR_clear: (%p)\n", ERROR_current);
#endif
ERROR_reset(&ERROR_current->info);
}
void ERROR_enter(ERROR_CONTEXT *err)
{
err->prev = ERROR_current;
err->info.code = 0;
err->info.free = FALSE;
err->info.msg = NULL;
err->info.backtrace = NULL;
ERROR_current = err;
#if DEBUG_ERROR
fprintf(stderr, "ERROR_enter: (%p)\n", ERROR_current);
fprintf(stderr, ">> ERROR_enter");
{
ERROR_CONTEXT *e = err;
while (e)
{
fprintf(stderr, " -> %p", e);
e = e->prev;
}
fprintf(stderr, "\n");
}
#endif
}
void ERROR_leave(ERROR_CONTEXT *err)
{
if (err->prev == ERROR_LEAVE_DONE)
return;
#if DEBUG_ERROR
fprintf(stderr, "<< ERROR_leave");
{
ERROR_CONTEXT *e = err;
while (e)
{
fprintf(stderr, " -> %p", e);
e = e->prev;
}
fprintf(stderr, " : %d %s\n", err->info.code, err->info.msg);
}
#endif
//if (!err->prev)
// BREAKPOINT();
ERROR_current = err->prev;
if (ERROR_current)
{
#if DEBUG_ERROR
fprintf(stderr, "ERROR_leave: (%p)\n", ERROR_current);
#endif
ERROR_reset(&ERROR_current->info);
ERROR_current->info = err->info;
}
else
ERROR_reset(&err->info);
err->prev = ERROR_LEAVE_DONE;
//ERROR_reset(err);
}
void ERROR_propagate()
{
#if DEBUG_ERROR
fprintf(stderr, "ERROR_propagate: %d %s\n", ERROR_current->info.code, ERROR_current->info.msg);
#endif
if (ERROR_current->ret)
ERROR_leave(ERROR_current);
longjmp(ERROR_current->env, 1);
}
const char *ERROR_get(void)
{
/*
if (code > 0 && code < 256)
return strerror(code);
else
return ERROR_Message[code - 256];
*/
return strerror(errno);
}
static int get_message_length(const char *pattern, char *arg[], int narg)
{
int len;
int i;
len = strlen(pattern) + narg;
for (i = 0; i < narg; i++)
len += strlen(arg[i]);
if (!EXEC_debug)
len -= narg * 3;
return len;
}
void ERROR_define(const char *pattern, char *arg[])
{
uchar c;
char *msg = NULL;
int len;
int narg = 0;
ERROR_clear();
if ((intptr_t)pattern >= 0 && (intptr_t)pattern < 256)
{
ERROR_current->info.code = (int)(intptr_t)pattern;
pattern = _message[(int)(intptr_t)pattern];
if (*pattern == '.')
{
narg = pattern[1] - '0';
pattern += 2;
}
}
else if ((intptr_t)pattern == E_ABORT)
{
ERROR_current->info.code = E_ABORT;
pattern = "";
}
else
{
ERROR_current->info.code = E_CUSTOM;
msg = (char *)pattern;
for (;;)
{
c = *msg++;
if (c == 0)
break;
if (c == '&')
{
c = *pattern++;
if (c >= '1' && c <= '4')
{
c -= '1';
if (c > narg)
narg = c;
}
}
}
}
if (narg)
{
len = get_message_length(pattern, arg, narg);
if (len)
{
STRING_new(&msg, NULL, len);
ERROR_current->info.msg = msg;
ERROR_current->info.free = TRUE;
if (EXEC_debug)
{
int i;
strcpy(msg, pattern);
msg += strlen(pattern);
for (i = 0; i < narg; i++)
{
*msg++ = '|';
if (arg[i])
{
strcpy(msg, arg[i]);
msg += strlen(arg[i]);
}
}
}
else
{
for (;;)
{
c = *pattern++;
if (c == 0)
break;
if (c == '&')
{
c = *pattern++;
if (c >= '1' && c <= '4')
{
c -= '1';
if (arg[c])
{
len = strlen(arg[c]);
memcpy(msg, arg[c], len);
msg += len;
}
}
}
else
*msg++ = c;
}
*msg = 0;
}
}
}
else
{
ERROR_current->info.msg = (char *)pattern;
ERROR_current->info.free = FALSE;
}
//fprintf(stderr, "ERROR_define: %p %d %p '%s'\n", ERROR_current, ERROR_current->info.code, ERROR_current->info.msg, ERROR_current->info.msg);
//STRING_add_char(&ERROR_current->info.msg, 0);
ERROR_current->info.cp = CP;
ERROR_current->info.fp = FP;
ERROR_current->info.pc = PC;
if (EXEC_debug || (ERROR_backtrace && (CP && CP->debug)))
{
//DEBUG_free_backtrace(&ERROR_current->info.backtrace);
ERROR_current->info.backtrace = DEBUG_backtrace();
#if DEBUG_ERROR
fprintf(stderr, "ERROR_define: (%p) DEBUG_backtrace: <<%p>>\n", ERROR_current, ERROR_current->info.backtrace);
#endif
}
#if DEBUG_ERROR
fprintf(stderr, "ERROR_define: %s\n", ERROR_current->info.msg);
#endif
}
void THROW(int code, ...)
{
va_list args;
int i;
char *arg[4];
va_start(args, code);
for (i = 0; i < 4; i++)
arg[i] = va_arg(args, char *);
ERROR_define((char *)(intptr_t)code, arg);
PROPAGATE();
}
void THROW_SYSTEM(int err, const char *path)
{
char buf[6];
switch(err)
{
case ENOENT:
THROW(E_NEXIST, path);
case EISDIR:
THROW(E_DIR, path);
case ENOTDIR:
THROW(E_NDIR, path);
case ENOMEM:
THROW(E_MEMORY);
case EACCES:
THROW(E_ACCESS);
case ENAMETOOLONG:
THROW(E_TOOLONG);
case ENOSPC:
THROW(E_FULL);
case EEXIST:
THROW(E_EXIST, path);
default:
sprintf(buf, "%d", err);
THROW(E_SYSTEM, buf, strerror(err));
}
}
void ERROR_panic(const char *error, ...)
{
va_list args;
va_start(args, error);
fflush(NULL);
fprintf(stderr, "\n** INTERNAL ERROR **\n** ");
vfprintf(stderr, error, args);
putc('\n', stderr);
if (ERROR_current->info.code)
{
ERROR_print();
}
fprintf(stderr, "** Program aborting. Sorry! :-(\n");
/*abort();*/
_exit(1);
}
void ERROR_print_at(FILE *where, bool msgonly, bool newline)
{
if (!ERROR_current->info.code)
return;
if (!msgonly)
{
if (ERROR_current->info.cp && ERROR_current->info.fp && ERROR_current->info.pc)
fprintf(where, "%s: ", DEBUG_get_position(ERROR_current->info.cp, ERROR_current->info.fp, ERROR_current->info.pc));
else
fprintf(where, "ERROR: ");
/*if (ERROR_current->info.code > 0 && ERROR_current->info.code < 256)
fprintf(where, "%ld:", ERROR_current->info.code);*/
if (ERROR_current->info.code > 0)
fprintf(where, "#%d: ", ERROR_current->info.code);
}
fprintf(where, "%s", ERROR_current->info.msg);
if (newline)
fputc('\n', where);
}
void ERROR_print(void)
{
static bool lock = FALSE;
DEBUG_BACKTRACE *bt = ERROR_current->info.backtrace;
ERROR_print_at(stderr, FALSE, TRUE);
if (bt)
{
int i;
for(i = 0; i < ARRAY_count(bt); i++)
fprintf(stderr, "%d: %s\n", i, DEBUG_get_position(bt[i].cp, bt[i].fp, bt[i].pc));
}
if (EXEC_main_hook_done && !EXEC_debug && EXEC_Hook.error && !lock)
{
lock = TRUE;
GAMBAS_DoNotRaiseEvent = TRUE;
HOOK(error)(ERROR_current->info.code, ERROR_current->info.msg, DEBUG_get_position(ERROR_current->info.cp, ERROR_current->info.fp, ERROR_current->info.pc));
lock = FALSE;
}
}
void ERROR_save(ERROR_INFO *save)
{
ERROR_reset(save);
*save = ERROR_current->info;
CLEAR(&ERROR_current->info);
//ERROR_reset(&ERROR_current->info);
}
void ERROR_restore(ERROR_INFO *save)
{
ERROR_reset(&ERROR_current->info);
ERROR_current->info = *save;
CLEAR(save);
//ERROR_reset(save);
}
void ERROR_set_last(void)
{
ERROR_reset(&ERROR_last);
ERROR_last = ERROR_current->info;
if (ERROR_last.free)
STRING_ref(ERROR_last.msg);
ERROR_last.backtrace = DEBUG_copy_backtrace(ERROR_last.backtrace);
#if DEBUG_ERROR
fprintf(stderr, "ERROR_set_last: DEBUG_copy_backtrace: <<%p>>\n", ERROR_last.backtrace);
#endif
}
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