706a605cc3
[INTERPRETER] * NEW: Creating a NULL value now clears the object address field so that it can be freely interpreted as a Object value with a null address by the JIT compiled code. [GB.JIT] * BUG: Correctly restore stack after calling a method through the interpreter.
766 lines
16 KiB
C
766 lines
16 KiB
C
/***************************************************************************
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gb_error.c
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(c) 2000-2017 Benoît Minisini <g4mba5@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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***************************************************************************/
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#define __GB_ERROR_C
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#include "gb_common.h"
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#include <stdarg.h>
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#include <ctype.h>
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#include "gb_buffer.h"
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#include "gbx_debug.h"
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#include "gbx_exec.h"
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#include "gbx_api.h"
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#include "gbx_stack.h"
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#include "gbx_project.h"
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#include "gb_error.h"
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//#define DEBUG_ERROR 1
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ERROR_CONTEXT *ERROR_current = NULL;
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ERROR_INFO ERROR_last = { 0 };
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void *ERROR_backtrace = NULL;
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ERROR_HANDLER *ERROR_handler = NULL;
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#if DEBUG_ERROR
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int ERROR_depth = 0;
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#endif
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static int _lock = 0;
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static char *_print_prefix = NULL;
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static const char *const _message[73] =
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{
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/* 0 E_UNKNOWN */ "Unknown error",
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/* 1 E_MEMORY */ "Out of memory",
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/* 2 E_CLASS */ ".3Cannot load class '&1': &2&3",
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/* 3 E_STACK */ "Stack overflow",
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/* 4 E_NEPARAM */ "Not enough arguments",
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/* 5 E_TMPARAM */ "Too many arguments",
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/* 6 E_TYPE */ ".2Type mismatch: wanted &1, got &2 instead",
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/* 7 E_OVERFLOW */ "Overflow",
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/* 8 E_ILLEGAL */ "Illegal instruction",
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/* 9 E_NFUNC */ "Not a function",
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/* 10 E_CSTATIC */ ".1Class '&1' is not creatable",
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/* 11 E_NSYMBOL */ ".2Unknown symbol '&2' in class '&1'",
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/* 12 E_NOBJECT */ "Not an object",
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/* 13 E_NULL */ "Null object",
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/* 14 E_STATIC */ ".2'&1.&2' is static",
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/* 15 E_NREAD */ ".2'&1.&2' is write only",
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/* 16 E_NWRITE */ ".2'&1.&2' is read only",
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/* 17 E_NPROPERTY */ ".2'&1.&2' is not a property",
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/* 18 E_NRETURN */ "No return value",
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/* 19 E_MATH */ "Mathematic error",
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/* 20 E_ARG */ "Bad argument",
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/* 21 E_BOUND */ "Out of bounds",
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/* 22 E_NDIM */ "Bad number of dimensions",
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/* 23 E_NARRAY */ "Not an array",
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/* 24 E_MAIN */ "No startup method",
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/* 25 E_NNEW */ "No instantiation method",
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/* 26 E_ZERO */ "Division by zero",
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/* 27 E_LIBRARY */ ".2Cannot load component '&1': &2",
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/* 28 E_EVENT */ ".3Bad event handler in &1.&2(): &3",
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/* 29 E_IOBJECT */ "Invalid object",
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/* 30 E_ENUM */ "Not an enumeration",
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/* 31 E_UCONV */ "Unsupported string conversion",
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/* 32 E_CONV */ "Bad string conversion",
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/* 33 E_DATE */ "Invalid date",
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/* 34 E_BADPATH */ "Invalid path",
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/* 35 E_OPEN */ ".2Cannot open file '&1': &2",
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/* 36 E_PROJECT */ ".2Bad project file: line &1: &2",
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/* 37 E_FULL */ "Device is full",
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/* 38 E_EXIST */ "File already exists", /* &1 */
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/* 39 E_EOF */ "End of file",
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/* 40 E_FORMAT */ "Bad format string",
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/* 41 E_DYNAMIC */ ".2'&1.&2' is not static",
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/* 42 E_SYSTEM */ ".2System error #&1: &2",
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/* 43 E_ACCESS */ "Access forbidden",
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/* 44 E_TOOLONG */ "File name is too long",
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/* 45 E_NEXIST */ "File or directory does not exist", /* &1 */
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/* 46 E_DIR */ "File is a directory", /* &1 */
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/* 47 E_READ */ "Read error",
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/* 48 E_WRITE */ "Write error",
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/* 49 E_NDIR */ ".1Not a directory: &1",
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/* 50 E_REGEXP */ ".1Bad regular expression: &1",
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/* 51 E_ARCH */ ".2Bad archive: &1: &2",
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/* 52 E_REGISTER */ ".1Cannot register class '&1'",
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/* 53 E_CLOSED */ "Stream is closed",
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/* 54 E_VIRTUAL */ "Bad use of virtual class",
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/* 55 E_STOP */ "STOP instruction encountered",
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/* 56 E_STRING */ "Too many simultaneous new strings",
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/* 57 E_EVAL */ ".1Bad expression: &1",
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/* 58 E_LOCK */ "File is locked",
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/* 59 E_PARENT */ "No parent class",
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/* 60 E_EXTLIB */ ".2Cannot find dynamic library '&1': &2",
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/* 61 E_EXTSYM */ ".2Cannot find symbol '&2' in dynamic library '&1'",
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/* 62 E_BYREF */ "Argument cannot be passed by reference",
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/* 63 E_OVERRIDE */ ".3'&1.&2' is incorrectly overridden in class '&3'",
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/* 64 E_NKEY */ "Void key",
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/* 65 E_SARRAY */ "Embedded array",
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/* 66 E_EXTCB */ ".1Cannot create callback: &1",
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/* 67 E_SERIAL */ "Serialization error",
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/* 68 E_CHILD */ ".2Cannot run child process: &1&2",
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/* 69 E_USER */ "Unknown user or group",
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/* 70 E_NEMPTY */ "Directory is not empty",
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/* 71 E_UTYPE */ "Unsupported datatype",
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/* 72 E_FREEREF */ "Free object referenced"
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};
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#if DEBUG_ERROR
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void ERROR_debug(const char *msg, ...)
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{
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int i;
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va_list args;
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ERROR_CONTEXT *err;
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va_start(args, msg);
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for (i = 0; i < ERROR_depth; i++)
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fprintf(stderr, "- ");
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vfprintf(stderr, msg, args);
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fprintf(stderr, "\t\t\t\t\t\t\t\t\t");
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DEBUG_where();
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err = ERROR_current;
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while (err)
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{
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fprintf(stderr, "[%p] -> ", err);
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err = err->prev;
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}
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fprintf(stderr, "NULL\n");
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va_end(args);
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}
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#endif
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void ERROR_lock()
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{
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_lock++;
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}
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void ERROR_unlock()
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{
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_lock--;
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}
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void ERROR_reset(ERROR_INFO *info)
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{
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if (!info->code)
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return;
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info->code = 0;
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if (info->free)
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{
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STRING_unref(&info->msg);
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info->free = FALSE;
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}
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info->msg = NULL;
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}
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static void ERROR_clear()
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{
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if (_lock)
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{
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#if DEBUG_ERROR
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ERROR_debug("ERROR_clear: (%p) *LOCKED*\n", ERROR_current);
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#endif
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return;
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}
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#if DEBUG_ERROR
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fprintf(stderr, "ERROR_clear: (%p)\n", ERROR_current);
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#endif
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ERROR_reset(&ERROR_current->info);
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STACK_free_backtrace(&ERROR_backtrace);
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}
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#if 0
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void ERROR_enter(ERROR_CONTEXT *err)
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{
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err->prev = ERROR_current;
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err->info.code = 0;
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//err->info.free = FALSE;
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//err->info.msg = NULL;
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//err->info.backtrace = NULL;
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ERROR_current = err;
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#if DEBUG_ERROR
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fprintf(stderr, "ERROR_enter: (%p)\n", ERROR_current);
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fprintf(stderr, ">> ERROR_enter");
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{
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ERROR_CONTEXT *e = err;
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while (e)
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{
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fprintf(stderr, " -> %p", e);
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e = e->prev;
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}
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fprintf(stderr, "\n");
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}
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#endif
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}
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#endif
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#if 0
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void ERROR_leave(ERROR_CONTEXT *err)
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{
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if (err->prev == ERROR_LEAVE_DONE)
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return;
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#if DEBUG_ERROR
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fprintf(stderr, "<< ERROR_leave");
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{
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ERROR_CONTEXT *e = err;
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while (e)
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{
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fprintf(stderr, " -> %p", e);
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e = e->prev;
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}
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fprintf(stderr, " : %d %s\n", err->info.code, err->info.msg);
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}
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#endif
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//if (!err->prev)
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// BREAKPOINT();
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ERROR_current = err->prev;
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if (ERROR_current)
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{
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#if DEBUG_ERROR
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fprintf(stderr, "ERROR_leave: (%p)\n", ERROR_current);
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#endif
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if (err->info.code)
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{
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ERROR_reset(&ERROR_current->info);
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ERROR_current->info = err->info;
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}
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}
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else
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ERROR_reset(&err->info);
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err->prev = ERROR_LEAVE_DONE;
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//ERROR_reset(err);
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}
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#endif
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void ERROR_propagate()
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{
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ERROR_HANDLER *ph, *prev;
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#if DEBUG_ERROR
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ERROR_debug("ERROR_propagate: %p %d %s (ret = %d)\n", ERROR_current, ERROR_current->info.code, ERROR_current->info.msg, ERROR_current->ret);
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#endif
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//fprintf(stderr, "ERROR_propagate: %p\n", ERROR_handler);
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if (ERROR_in_catch(ERROR_current))
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ERROR_leave(ERROR_current);
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while (ERROR_handler)
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{
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ph = ERROR_handler;
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if (ERROR_current && ERROR_current->handler == ph)
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break;
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//fprintf(stderr, "ERROR_propagate: %p @ %p (%p)\n", ERROR_handler, ERROR_handler->context, ERROR_current);
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prev = ph->prev;
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(*ph->handler)(ph->arg1, ph->arg2);
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ERROR_handler = prev;
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}
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longjmp(ERROR_current->env, 1);
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}
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const char *ERROR_get(void)
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{
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/*
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if (code > 0 && code < 256)
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return strerror(code);
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else
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return ERROR_Message[code - 256];
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*/
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return strerror(errno);
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}
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static int get_message_length(const char *pattern, char *arg[], int narg)
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{
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int len;
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int i;
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len = strlen(pattern) + narg;
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for (i = 0; i < narg; i++)
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len += strlen(arg[i]);
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if (!EXEC_debug)
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len -= narg * 3;
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return len;
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}
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void ERROR_define(const char *pattern, char *arg[])
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{
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uchar c;
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char *msg = NULL;
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int len;
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int narg = 0;
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ERROR_clear();
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if ((intptr_t)pattern >= 0 && (intptr_t)pattern < 256)
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{
|
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ERROR_current->info.code = (int)(intptr_t)pattern;
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pattern = _message[(int)(intptr_t)pattern];
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if (*pattern == '.')
|
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{
|
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narg = pattern[1] - '0';
|
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pattern += 2;
|
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}
|
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}
|
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else if ((intptr_t)pattern == E_ABORT)
|
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{
|
|
ERROR_current->info.code = E_ABORT;
|
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pattern = "";
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}
|
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else
|
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{
|
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ERROR_current->info.code = E_CUSTOM;
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|
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if (arg)
|
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{
|
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msg = (char *)pattern;
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for (;;)
|
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{
|
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c = *msg++;
|
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if (c == 0)
|
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break;
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|
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if (c == '&')
|
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{
|
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c = *msg++;
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if (c >= '1' && c <= '4')
|
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{
|
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c -= '0';
|
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if (c > narg)
|
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narg = c;
|
|
}
|
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}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (narg)
|
|
{
|
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len = get_message_length(pattern, arg, narg);
|
|
if (len)
|
|
{
|
|
msg = STRING_new(NULL, len);
|
|
ERROR_current->info.msg = msg;
|
|
ERROR_current->info.free = TRUE;
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|
|
|
if (EXEC_debug)
|
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{
|
|
int i;
|
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strcpy(msg, pattern);
|
|
msg += strlen(pattern);
|
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for (i = 0; i < narg; i++)
|
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{
|
|
*msg++ = '|';
|
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if (arg[i])
|
|
{
|
|
strcpy(msg, arg[i]);
|
|
msg += strlen(arg[i]);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (;;)
|
|
{
|
|
c = *pattern++;
|
|
if (c == 0)
|
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break;
|
|
|
|
if (c == '&')
|
|
{
|
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c = *pattern++;
|
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if (c >= '1' && c <= '4')
|
|
{
|
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c -= '1';
|
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if (arg[c])
|
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{
|
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len = strlen(arg[c]);
|
|
memcpy(msg, arg[c], len);
|
|
msg += len;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
*msg++ = c;
|
|
}
|
|
|
|
*msg = 0;
|
|
}
|
|
|
|
/*fprintf(stderr, "msg: %s\n", ERROR_current->info.msg);
|
|
if (strcmp(ERROR_current->info.msg, "Type mismatch: wanted WebView, got Function instead") == 0)
|
|
{
|
|
BREAKPOINT();
|
|
STRING_watch = ERROR_current->info.msg;
|
|
}*/
|
|
}
|
|
}
|
|
else if (ERROR_current->info.code == E_CUSTOM)
|
|
{
|
|
if (pattern && *pattern)
|
|
{
|
|
ERROR_current->info.msg = STRING_new_zero(pattern);
|
|
ERROR_current->info.free = TRUE;
|
|
}
|
|
else
|
|
{
|
|
ERROR_current->info.msg = (char *)_message[E_UNKNOWN];
|
|
ERROR_current->info.free = FALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ERROR_current->info.msg = (char *)pattern;
|
|
ERROR_current->info.free = FALSE;
|
|
}
|
|
|
|
//fprintf(stderr, "ERROR_define: %p %d '%s'\n", ERROR_current, ERROR_current->info.code, 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 DEBUG_ERROR
|
|
ERROR_debug("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);
|
|
|
|
va_end(args);
|
|
|
|
PROPAGATE();
|
|
}
|
|
|
|
void THROW_NULL(void)
|
|
{
|
|
THROW(E_NULL);
|
|
}
|
|
|
|
void THROW_CLASS(void *class, char *arg1, char *arg2)
|
|
{
|
|
THROW(E_CLASS, CLASS_get_name((CLASS *)class), arg1, arg2);
|
|
}
|
|
|
|
void THROW_ILLEGAL(void)
|
|
{
|
|
THROW(E_ILLEGAL);
|
|
}
|
|
|
|
void THROW_STACK(void)
|
|
{
|
|
#if DEBUG_STACK
|
|
fprintf(stderr, "THROW STACK!\n");
|
|
#endif
|
|
THROW(E_STACK);
|
|
}
|
|
|
|
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_fatal(const char *error, ...)
|
|
{
|
|
va_list args;
|
|
|
|
va_start(args, error);
|
|
fputs(EXEC_arch ? "gbr" GAMBAS_VERSION_STRING : "gbx" GAMBAS_VERSION_STRING, stderr);
|
|
fputs(": ", stderr);
|
|
vfprintf(stderr, error, args);
|
|
va_end(args);
|
|
putc('\n', stderr);
|
|
_exit(1);
|
|
}
|
|
|
|
void ERROR_panic(const char *error, ...)
|
|
{
|
|
va_list args;
|
|
|
|
va_start(args, error);
|
|
|
|
fflush(NULL);
|
|
|
|
fprintf(stderr, "\n** \n** OOPS! INTERNAL ERROR. Program aborting, sorry! :-(\n** ");
|
|
vfprintf(stderr, error, args);
|
|
|
|
va_end(args);
|
|
|
|
fputc('\n', stderr);
|
|
|
|
if (ERROR_current->info.code)
|
|
{
|
|
fprintf(stderr, "** \n");
|
|
_print_prefix = "** ";
|
|
ERROR_print();
|
|
_print_prefix = NULL;
|
|
}
|
|
fprintf(stderr, "** \n** Please send a bug report to the gambas bugtracker [1] or to the gambas mailing-list [2].\n** [1] http://gambaswiki.org/bugtracker\n** [2] https://lists.gambas-basic.org/listinfo/user\n** \n\n");
|
|
_exit(1);
|
|
}
|
|
|
|
|
|
static void print_prefix(FILE *where)
|
|
{
|
|
if (_print_prefix) fputs(_print_prefix, where);
|
|
}
|
|
|
|
void ERROR_print_at(FILE *where, bool msgonly, bool newline)
|
|
{
|
|
if (!ERROR_current->info.code)
|
|
return;
|
|
|
|
print_prefix(where);
|
|
|
|
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);
|
|
if (ERROR_current->info.msg)
|
|
fprintf(where, "%s", ERROR_current->info.msg);
|
|
}
|
|
else
|
|
{
|
|
char *p = ERROR_current->info.msg;
|
|
unsigned char c;
|
|
|
|
if (p)
|
|
{
|
|
while ((c = *p++))
|
|
{
|
|
if (c < ' ') c = ' ';
|
|
fputc(c, where);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (newline)
|
|
fputc('\n', where);
|
|
}
|
|
|
|
void ERROR_print(void)
|
|
{
|
|
static bool lock = FALSE;
|
|
|
|
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;
|
|
}
|
|
|
|
ERROR_print_at(stderr, FALSE, TRUE);
|
|
|
|
if (ERROR_backtrace)
|
|
{
|
|
print_prefix(stderr);
|
|
DEBUG_print_backtrace(ERROR_backtrace);
|
|
}
|
|
}
|
|
|
|
static void ERROR_copy(ERROR_INFO *save, ERROR_INFO *last)
|
|
{
|
|
ERROR_reset(save);
|
|
*save = ERROR_current->info;
|
|
|
|
if (last)
|
|
{
|
|
ERROR_reset(last);
|
|
*last = ERROR_last;
|
|
}
|
|
}
|
|
|
|
void ERROR_save(ERROR_INFO *save, ERROR_INFO *last)
|
|
{
|
|
ERROR_copy(save, last);
|
|
|
|
CLEAR(&ERROR_current->info);
|
|
if (last)
|
|
CLEAR(&ERROR_last);
|
|
}
|
|
|
|
void ERROR_restore(ERROR_INFO *save, ERROR_INFO *last)
|
|
{
|
|
ERROR_reset(&ERROR_current->info);
|
|
ERROR_current->info = *save;
|
|
CLEAR(save);
|
|
|
|
if (last)
|
|
{
|
|
ERROR_reset(&ERROR_last);
|
|
ERROR_last = *last;
|
|
CLEAR(last);
|
|
}
|
|
}
|
|
|
|
void ERROR_set_last(bool bt)
|
|
{
|
|
ERROR_reset(&ERROR_last);
|
|
ERROR_last = ERROR_current->info;
|
|
if (ERROR_last.free)
|
|
STRING_ref(ERROR_last.msg);
|
|
|
|
if (bt && !ERROR_backtrace)
|
|
ERROR_backtrace = STACK_get_backtrace();
|
|
}
|
|
|
|
void ERROR_define_last(void)
|
|
{
|
|
ERROR_reset(&ERROR_current->info);
|
|
ERROR_current->info = ERROR_last;
|
|
if (ERROR_last.free)
|
|
STRING_ref(ERROR_last.msg);
|
|
}
|
|
|
|
void ERROR_warning(const char *warning, ...)
|
|
{
|
|
va_list args;
|
|
|
|
va_start(args, warning);
|
|
|
|
fflush(NULL);
|
|
|
|
fprintf(stderr, "gbx" GAMBAS_VERSION_STRING ": warning: ");
|
|
vfprintf(stderr, warning, args);
|
|
|
|
va_end(args);
|
|
|
|
putc('\n', stderr);
|
|
}
|
|
|
|
/*void ERROR_deprecated(const char *msg)
|
|
{
|
|
ERROR_warning("%s: %s is deprecated.", DEBUG_get_current_position(), msg);
|
|
}*/
|
|
|
|
void ERROR_exit(void)
|
|
{
|
|
ERROR_reset(&ERROR_last);
|
|
STACK_free_backtrace(&ERROR_backtrace);
|
|
}
|
|
|
|
void ERROR_hook(void)
|
|
{
|
|
static bool no_rec = FALSE;
|
|
|
|
ERROR_INFO save = { 0 };
|
|
ERROR_INFO last = { 0 };
|
|
CLASS_DESC_METHOD *handle_error;
|
|
|
|
if (no_rec)
|
|
return;
|
|
|
|
if (PROJECT_class && CLASS_is_loaded(PROJECT_class))
|
|
{
|
|
handle_error = (CLASS_DESC_METHOD *)CLASS_get_symbol_desc_kind(PROJECT_class, "Application_Error", CD_STATIC_METHOD, 0);
|
|
|
|
if (handle_error)
|
|
{
|
|
no_rec = TRUE;
|
|
ERROR_save(&save, &last);
|
|
|
|
TRY
|
|
{
|
|
EXEC_public_desc(PROJECT_class, NULL, handle_error, 0);
|
|
}
|
|
CATCH
|
|
{
|
|
ERROR_save(&save, &last);
|
|
}
|
|
END_TRY
|
|
|
|
ERROR_restore(&save, &last);
|
|
no_rec = FALSE;
|
|
}
|
|
}
|
|
}
|
|
|