/* Printing of backtraces and error messages
- * Copyright (C) 1996,1997,1998 Free Software Foundation
+ * Copyright (C) 1996,1997,1998,1999,2000,2001, 2003, 2004, 2006 Free Software Foundation
*
- * 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 library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful,
+ * This library 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.
+ * 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 this software; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 USA
- *
- * As a special exception, the Free Software Foundation gives permission
- * for additional uses of the text contained in its release of GUILE.
- *
- * The exception is that, if you link the GUILE library with other files
- * to produce an executable, this does not by itself cause the
- * resulting executable to be covered by the GNU General Public License.
- * Your use of that executable is in no way restricted on account of
- * linking the GUILE library code into it.
- *
- * This exception does not however invalidate any other reasons why
- * the executable file might be covered by the GNU General Public License.
- *
- * This exception applies only to the code released by the
- * Free Software Foundation under the name GUILE. If you copy
- * code from other Free Software Foundation releases into a copy of
- * GUILE, as the General Public License permits, the exception does
- * not apply to the code that you add in this way. To avoid misleading
- * anyone as to the status of such modified files, you must delete
- * this exception notice from them.
- *
- * If you write modifications of your own for GUILE, it is your choice
- * whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice.
- *
- * The author can be reached at djurfeldt@nada.kth.se
- * Mikael Djurfeldt, SANS/NADA KTH, 10044 STOCKHOLM, SWEDEN */
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
#include <stdio.h>
-#include "_scm.h"
-#include "stacks.h"
-#include "srcprop.h"
-#include "genio.h"
-#include "struct.h"
-#include "strports.h"
-#include "throw.h"
-#include "fluids.h"
+#include <ctype.h>
+#include <assert.h>
-#include "backtrace.h"
+#include "libguile/_scm.h"
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_IO_H
+#include <io.h>
+#endif
+
+#include "libguile/stacks.h"
+#include "libguile/srcprop.h"
+#include "libguile/struct.h"
+#include "libguile/strports.h"
+#include "libguile/throw.h"
+#include "libguile/fluids.h"
+#include "libguile/ports.h"
+#include "libguile/strings.h"
+#include "libguile/dynwind.h"
+
+#include "libguile/validate.h"
+#include "libguile/lang.h"
+#include "libguile/backtrace.h"
+#include "libguile/filesys.h"
/* {Error reporting and backtraces}
- * (A first approximation.)
*
* Note that these functions shouldn't generate errors themselves.
*/
-#ifndef SCM_RECKLESS
+/* Print parameters for error messages. */
+
+#define DISPLAY_ERROR_MESSAGE_MAX_LEVEL 7
+#define DISPLAY_ERROR_MESSAGE_MAX_LENGTH 10
+
+/* Print parameters for failing expressions in error messages.
+ * (See also `print_params' below for backtrace print parameters.)
+ */
+
+#define DISPLAY_EXPRESSION_MAX_LEVEL 2
+#define DISPLAY_EXPRESSION_MAX_LENGTH 3
+
#undef SCM_ASSERT
#define SCM_ASSERT(_cond, _arg, _pos, _subr) \
if (!(_cond)) \
return SCM_BOOL_F;
-#endif
-SCM scm_the_last_stack_fluid;
+SCM scm_the_last_stack_fluid_var;
-static void display_header SCM_P ((SCM source, SCM port));
static void
-display_header (source, port)
- SCM source;
- SCM port;
+display_header (SCM source, SCM port)
{
- SCM fname = (SCM_NIMP (source) && SCM_MEMOIZEDP (source)
- ? scm_source_property (source, scm_sym_filename)
- : SCM_BOOL_F);
- if (SCM_NIMP (fname) && SCM_STRINGP (fname))
+ if (SCM_MEMOIZEDP (source))
{
- scm_prin1 (fname, port, 0);
- scm_putc (':', port);
- scm_intprint (SCM_INUM (scm_source_property (source, scm_sym_line)) + 1,
- 10,
- port);
- scm_putc (':', port);
- scm_intprint (SCM_INUM (scm_source_property (source, scm_sym_column)) + 1,
- 10,
- port);
+ SCM fname = scm_source_property (source, scm_sym_filename);
+ SCM line = scm_source_property (source, scm_sym_line);
+ SCM col = scm_source_property (source, scm_sym_column);
+
+ /* Dirk:FIXME:: Maybe we should store the _port_ rather than the
+ * filename with the source properties? Then we could in case of
+ * non-file ports give at least some more details than just
+ * "<unnamed port>". */
+ if (scm_is_true (fname))
+ scm_prin1 (fname, port, 0);
+ else
+ scm_puts ("<unnamed port>", port);
+
+ if (scm_is_true (line) && scm_is_true (col))
+ {
+ scm_putc (':', port);
+ scm_intprint (scm_to_long (line) + 1, 10, port);
+ scm_putc (':', port);
+ scm_intprint (scm_to_long (col) + 1, 10, port);
+ }
}
else
scm_puts ("ERROR", port);
}
+struct display_error_message_data {
+ SCM message;
+ SCM args;
+ SCM port;
+ scm_print_state *pstate;
+ int old_fancyp;
+ int old_level;
+ int old_length;
+};
+
+static SCM
+display_error_message (struct display_error_message_data *d)
+{
+ if (scm_is_string (d->message) && scm_is_true (scm_list_p (d->args)))
+ scm_simple_format (d->port, d->message, d->args);
+ else
+ scm_display (d->message, d->port);
+ scm_newline (d->port);
+ return SCM_UNSPECIFIED;
+}
+
+static void
+before_display_error_message (struct display_error_message_data *d)
+{
+ scm_print_state *pstate = d->pstate;
+ d->old_fancyp = pstate->fancyp;
+ d->old_level = pstate->level;
+ d->old_length = pstate->length;
+ pstate->fancyp = 1;
+ pstate->level = DISPLAY_ERROR_MESSAGE_MAX_LEVEL;
+ pstate->length = DISPLAY_ERROR_MESSAGE_MAX_LENGTH;
+}
+
+static void
+after_display_error_message (struct display_error_message_data *d)
+{
+ scm_print_state *pstate = d->pstate;
+ pstate->fancyp = d->old_fancyp;
+ pstate->level = d->old_level;
+ pstate->length = d->old_length;
+}
+
void
-scm_display_error_message (message, args, port)
- SCM message;
- SCM args;
- SCM port;
+scm_display_error_message (SCM message, SCM args, SCM port)
{
- int writingp;
- char *start;
- char *p;
-
- if (SCM_IMP (message) || !SCM_ROSTRINGP (message) || SCM_IMP (args)
- || !scm_list_p (args))
- {
- scm_prin1 (message, port, 0);
- scm_putc ('\n', port);
- return;
- }
+ struct display_error_message_data d;
+ SCM print_state;
+ scm_print_state *pstate;
- SCM_COERCE_SUBSTR (message);
- start = SCM_ROCHARS (message);
- for (p = start; *p != '\0'; ++p)
- if (*p == '%')
- {
- if (SCM_IMP (args) || SCM_NCONSP (args))
- continue;
-
- ++p;
- if (*p == 's')
- writingp = 0;
- else if (*p == 'S')
- writingp = 1;
- else
- continue;
-
- scm_lfwrite (start, p - start - 1, port);
- scm_prin1 (SCM_CAR (args), port, writingp);
- args = SCM_CDR (args);
- start = p + 1;
- }
- scm_lfwrite (start, p - start, port);
- scm_putc ('\n', port);
+ port = scm_i_port_with_print_state (port, SCM_UNDEFINED);
+ print_state = SCM_PORT_WITH_PS_PS (port);
+ pstate = SCM_PRINT_STATE (print_state);
+
+ d.message = message;
+ d.args = args;
+ d.port = port;
+ d.pstate = pstate;
+ scm_internal_dynamic_wind ((scm_t_guard) before_display_error_message,
+ (scm_t_inner) display_error_message,
+ (scm_t_guard) after_display_error_message,
+ &d,
+ &d);
}
-static void display_expression SCM_P ((SCM frame, SCM pname, SCM source, SCM port));
static void
-display_expression (frame, pname, source, port)
- SCM frame;
- SCM pname;
- SCM source;
- SCM port;
+display_expression (SCM frame, SCM pname, SCM source, SCM port)
{
SCM print_state = scm_make_print_state ();
scm_print_state *pstate = SCM_PRINT_STATE (print_state);
pstate->writingp = 0;
pstate->fancyp = 1;
- pstate->level = 2;
- pstate->length = 3;
- if (SCM_NIMP (pname) && SCM_ROSTRINGP (pname))
+ pstate->level = DISPLAY_EXPRESSION_MAX_LEVEL;
+ pstate->length = DISPLAY_EXPRESSION_MAX_LENGTH;
+ if (scm_is_symbol (pname) || scm_is_string (pname))
{
- if (SCM_NIMP (frame)
- && SCM_FRAMEP (frame)
+ if (SCM_FRAMEP (frame)
&& SCM_FRAME_EVAL_ARGS_P (frame))
scm_puts ("While evaluating arguments to ", port);
else
scm_puts ("In procedure ", port);
scm_iprin1 (pname, port, pstate);
- if (SCM_NIMP (source) && SCM_MEMOIZEDP (source))
+ if (SCM_MEMOIZEDP (source))
{
scm_puts (" in expression ", port);
pstate->writingp = 1;
- scm_iprin1 (scm_unmemoize (source), port, pstate);
+ scm_iprin1 (scm_i_unmemoize_expr (source), port, pstate);
}
}
- else if (SCM_NIMP (source))
+ else if (SCM_MEMOIZEDP (source))
{
scm_puts ("In expression ", port);
pstate->writingp = 1;
- scm_iprin1 (scm_unmemoize (source), port, pstate);
+ scm_iprin1 (scm_i_unmemoize_expr (source), port, pstate);
}
scm_puts (":\n", port);
scm_free_print_state (print_state);
{
SCM current_frame = SCM_BOOL_F;
SCM source = SCM_BOOL_F;
- SCM pname = SCM_BOOL_F;
SCM prev_frame = SCM_BOOL_F;
+ SCM pname = a->subr;
- if (SCM_DEBUGGINGP
- && SCM_NIMP (a->stack)
+ if (scm_debug_mode_p
&& SCM_STACKP (a->stack)
&& SCM_STACK_LENGTH (a->stack) > 0)
{
current_frame = scm_stack_ref (a->stack, SCM_INUM0);
source = SCM_FRAME_SOURCE (current_frame);
prev_frame = SCM_FRAME_PREV (current_frame);
- if (!(SCM_NIMP (source) && SCM_MEMOIZEDP (source))
- && prev_frame != SCM_BOOL_F)
+ if (!SCM_MEMOIZEDP (source) && scm_is_true (prev_frame))
source = SCM_FRAME_SOURCE (prev_frame);
- if (SCM_FRAME_PROC_P (current_frame)
- && scm_procedure_p (SCM_FRAME_PROC (current_frame)) == SCM_BOOL_T)
+ if (!scm_is_symbol (pname)
+ && !scm_is_string (pname)
+ && SCM_FRAME_PROC_P (current_frame)
+ && scm_is_true (scm_procedure_p (SCM_FRAME_PROC (current_frame))))
pname = scm_procedure_name (SCM_FRAME_PROC (current_frame));
}
- if (!(SCM_NIMP (pname) && SCM_ROSTRINGP (pname)))
- pname = a->subr;
- if ((SCM_NIMP (pname) && SCM_ROSTRINGP (pname))
- || (SCM_NIMP (source) && SCM_MEMOIZEDP (source)))
+ if (scm_is_symbol (pname) || scm_is_string (pname) || SCM_MEMOIZEDP (source))
{
display_header (source, a->port);
display_expression (current_frame, pname, source, a->port);
Note that it is very important that this handler *doesn't* try to
print more than the error tag, since the error very probably is
caused by an erroneous print call-back routine. If we would
- tru to print all objects, we would enter an infinite loop. */
+ try to print all objects, we would enter an infinite loop. */
static SCM
display_error_handler (struct display_error_handler_data *data,
- SCM tag, SCM args)
+ SCM tag, SCM args SCM_UNUSED)
{
SCM print_state = scm_make_print_state ();
scm_puts ("\nException during displaying of ", data->port);
return SCM_UNSPECIFIED;
}
-SCM_PROC(s_display_error, "display-error", 6, 0, 0, scm_display_error);
-SCM
-scm_display_error (stack, port, subr, message, args, rest)
- SCM stack;
- SCM port;
- SCM subr;
- SCM message;
- SCM args;
- SCM rest;
+
+/* The function scm_i_display_error prints out a detailed error message. This
+ * function will be called directly within libguile to signal error messages.
+ * No parameter checks will be performed by scm_i_display_error. Thus, User
+ * code should rather use the function scm_display_error.
+ */
+void
+scm_i_display_error (SCM stack, SCM port, SCM subr, SCM message, SCM args, SCM rest)
{
struct display_error_args a;
struct display_error_handler_data data;
data.mode = "error";
data.port = port;
scm_internal_catch (SCM_BOOL_T,
- (scm_catch_body_t) display_error_body, &a,
- (scm_catch_handler_t) display_error_handler, &data);
+ (scm_t_catch_body) display_error_body, &a,
+ (scm_t_catch_handler) display_error_handler, &data);
+}
+
+
+SCM_DEFINE (scm_display_error, "display-error", 6, 0, 0,
+ (SCM stack, SCM port, SCM subr, SCM message, SCM args, SCM rest),
+ "Display an error message to the output port @var{port}.\n"
+ "@var{stack} is the saved stack for the error, @var{subr} is\n"
+ "the name of the procedure in which the error occurred and\n"
+ "@var{message} is the actual error message, which may contain\n"
+ "formatting instructions. These will format the arguments in\n"
+ "the list @var{args} accordingly. @var{rest} is currently\n"
+ "ignored.")
+#define FUNC_NAME s_scm_display_error
+{
+ SCM_VALIDATE_OUTPUT_PORT (2, port);
+
+ scm_i_display_error (stack, port, subr, message, args, rest);
+
return SCM_UNSPECIFIED;
}
+#undef FUNC_NAME
+
+
+typedef struct {
+ int level;
+ int length;
+} print_params_t;
+
+static int n_print_params = 9;
+static print_params_t default_print_params[] = {
+ { 4, 9 }, { 4, 3 },
+ { 3, 4 }, { 3, 3 },
+ { 2, 4 }, { 2, 3 },
+ { 1, 4 }, { 1, 3 }, { 1, 2 }
+};
+static print_params_t *print_params = default_print_params;
+
+#ifdef GUILE_DEBUG
+SCM_DEFINE (scm_set_print_params_x, "set-print-params!", 1, 0, 0,
+ (SCM params),
+ "Set the print parameters to the values from @var{params}.\n"
+ "@var{params} must be a list of two-element lists which must\n"
+ "hold two integer values.")
+#define FUNC_NAME s_scm_set_print_params_x
+{
+ int i;
+ int n;
+ SCM ls;
+ print_params_t *new_params;
+
+ SCM_VALIDATE_NONEMPTYLIST_COPYLEN (2, params, n);
+ for (ls = params; !SCM_NULL_OR_NIL_P (ls); ls = SCM_CDR (ls))
+ SCM_ASSERT (scm_ilength (SCM_CAR (params)) == 2
+ && scm_is_unsigned_integer (SCM_CAAR (ls), 0, INT_MAX)
+ && scm_is_unsigned_integer (SCM_CADAR (ls), 0, INT_MAX),
+ params,
+ SCM_ARG2,
+ s_scm_set_print_params_x);
+ new_params = scm_malloc (n * sizeof (print_params_t));
+ if (print_params != default_print_params)
+ free (print_params);
+ print_params = new_params;
+ for (i = 0; i < n; ++i)
+ {
+ print_params[i].level = scm_to_int (SCM_CAAR (params));
+ print_params[i].length = scm_to_int (SCM_CADAR (params));
+ params = SCM_CDR (params);
+ }
+ n_print_params = n;
+ return SCM_UNSPECIFIED;
+}
+#undef FUNC_NAME
+#endif
-static void indent SCM_P ((int n, SCM port));
static void
-indent (n, port)
- int n;
- SCM port;
+indent (int n, SCM port)
{
int i;
for (i = 0; i < n; ++i)
scm_putc (' ', port);
}
-static void display_frame_expr SCM_P ((char *hdr, SCM exp, char *tlr, int indentation, SCM sport, SCM port, scm_print_state *pstate));
static void
-display_frame_expr (hdr, exp, tlr, indentation, sport, port, pstate)
- char *hdr;
- SCM exp;
- char *tlr;
- int indentation;
- SCM sport;
- SCM port;
- scm_print_state *pstate;
+display_frame_expr (char *hdr, SCM exp, char *tlr, int indentation, SCM sport, SCM port, scm_print_state *pstate)
{
- if (SCM_NIMP (exp) && SCM_CONSP (exp))
+ int i = 0, n;
+ scm_t_ptob_descriptor *ptob = scm_ptobs + SCM_PTOBNUM (sport);
+ do
{
- scm_iprlist (hdr, exp, tlr[0], port, pstate);
- scm_puts (&tlr[1], port);
+ pstate->length = print_params[i].length;
+ ptob->seek (sport, 0, SEEK_SET);
+ if (scm_is_pair (exp))
+ {
+ pstate->level = print_params[i].level - 1;
+ scm_iprlist (hdr, exp, tlr[0], sport, pstate);
+ scm_puts (&tlr[1], sport);
+ }
+ else
+ {
+ pstate->level = print_params[i].level;
+ scm_iprin1 (exp, sport, pstate);
+ }
+ ptob->flush (sport);
+ n = ptob->seek (sport, 0, SEEK_CUR);
+ ++i;
}
- else
- scm_iprin1 (exp, port, pstate);
- scm_putc ('\n', port);
+ while (indentation + n > SCM_BACKTRACE_WIDTH && i < n_print_params);
+ ptob->truncate (sport, n);
+
+ scm_display (scm_strport_to_string (sport), port);
}
-static void display_application SCM_P ((SCM frame, int indentation, SCM sport, SCM port, scm_print_state *pstate));
static void
-display_application (frame, indentation, sport, port, pstate)
- SCM frame;
- int indentation;
- SCM sport;
- SCM port;
- scm_print_state *pstate;
+display_application (SCM frame, int indentation, SCM sport, SCM port, scm_print_state *pstate)
{
SCM proc = SCM_FRAME_PROC (frame);
- SCM name = (SCM_NFALSEP (scm_procedure_p (proc))
+ SCM name = (scm_is_true (scm_procedure_p (proc))
? scm_procedure_name (proc)
: SCM_BOOL_F);
display_frame_expr ("[",
- scm_cons (SCM_NFALSEP (name) ? name : proc,
+ scm_cons (scm_is_true (name) ? name : proc,
SCM_FRAME_ARGS (frame)),
SCM_FRAME_EVAL_ARGS_P (frame) ? " ..." : "]",
indentation,
pstate);
}
-SCM_PROC(s_display_application, "display-application", 1, 1, 0, scm_display_application);
-
-SCM
-scm_display_application (SCM frame, SCM port)
+SCM_DEFINE (scm_display_application, "display-application", 1, 2, 0,
+ (SCM frame, SCM port, SCM indent),
+ "Display a procedure application @var{frame} to the output port\n"
+ "@var{port}. @var{indent} specifies the indentation of the\n"
+ "output.")
+#define FUNC_NAME s_scm_display_application
{
+ SCM_VALIDATE_FRAME (1, frame);
if (SCM_UNBNDP (port))
- port = scm_cur_outp;
+ port = scm_current_output_port ();
+ else
+ SCM_VALIDATE_OPOUTPORT (2, port);
+ if (SCM_UNBNDP (indent))
+ indent = SCM_INUM0;
+
if (SCM_FRAME_PROC_P (frame))
/* Display an application. */
{
- SCM print_state;
+ SCM sport, print_state;
scm_print_state *pstate;
+ /* Create a string port used for adaptation of printing parameters. */
+ sport = scm_mkstrport (SCM_INUM0,
+ scm_make_string (scm_from_int (240),
+ SCM_UNDEFINED),
+ SCM_OPN | SCM_WRTNG,
+ FUNC_NAME);
+
/* Create a print state for printing of frames. */
print_state = scm_make_print_state ();
pstate = SCM_PRINT_STATE (print_state);
pstate->writingp = 1;
pstate->fancyp = 1;
- pstate->level = 2;
- pstate->length = 9;
- display_application (frame, 0, SCM_BOOL_F, port, pstate); /*fixme*/
+ display_application (frame, scm_to_int (indent), sport, port, pstate);
return SCM_BOOL_T;
}
else
return SCM_BOOL_F;
}
+#undef FUNC_NAME
+
+SCM_SYMBOL (sym_base, "base");
+
+static void
+display_backtrace_get_file_line (SCM frame, SCM *file, SCM *line)
+{
+ SCM source = SCM_FRAME_SOURCE (frame);
+ *file = SCM_MEMOIZEDP (source) ? scm_source_property (source, scm_sym_filename) : SCM_BOOL_F;
+ *line = (SCM_MEMOIZEDP (source)) ? scm_source_property (source, scm_sym_line) : SCM_BOOL_F;
+}
-static void display_frame SCM_P ((SCM frame, int nfield, int indentation, SCM sport, SCM port, scm_print_state *pstate));
static void
-display_frame (frame, nfield, indentation, sport, port, pstate)
+display_backtrace_file (frame, last_file, port, pstate)
SCM frame;
- int nfield;
- int indentation;
- SCM sport;
+ SCM *last_file;
SCM port;
scm_print_state *pstate;
+{
+ SCM file, line;
+
+ display_backtrace_get_file_line (frame, &file, &line);
+
+ if (scm_is_eq (file, *last_file))
+ return;
+
+ *last_file = file;
+
+ scm_puts ("In ", port);
+ if (scm_is_false (file))
+ if (scm_is_false (line))
+ scm_puts ("unknown file", port);
+ else
+ scm_puts ("current input", port);
+ else
+ {
+ pstate->writingp = 0;
+ scm_iprin1 (file, port, pstate);
+ pstate->writingp = 1;
+ }
+ scm_puts (":\n", port);
+}
+
+static void
+display_backtrace_file_and_line (SCM frame, SCM port, scm_print_state *pstate)
+{
+ SCM file, line;
+
+ display_backtrace_get_file_line (frame, &file, &line);
+
+ if (scm_is_eq (SCM_PACK (SCM_SHOW_FILE_NAME), sym_base))
+ {
+ if (scm_is_false (file))
+ {
+ if (scm_is_false (line))
+ scm_putc ('?', port);
+ else
+ scm_puts ("<stdin>", port);
+ }
+ else
+ {
+ pstate -> writingp = 0;
+#ifdef HAVE_POSIX
+ scm_iprin1 ((scm_is_string (file)?
+ scm_basename (file, SCM_UNDEFINED) : file),
+ port, pstate);
+#else
+ scm_iprin1 (file, port, pstate);
+#endif
+ pstate -> writingp = 1;
+ }
+
+ scm_putc (':', port);
+ }
+ else if (scm_is_true (line))
+ {
+ int i, j=0;
+ for (i = scm_to_int (line)+1; i > 0; i = i/10, j++)
+ ;
+ indent (4-j, port);
+ }
+
+ if (scm_is_false (line))
+ scm_puts (" ?", port);
+ else
+ scm_intprint (scm_to_int (line) + 1, 10, port);
+ scm_puts (": ", port);
+}
+
+static void
+display_frame (SCM frame, int nfield, int indentation, SCM sport, SCM port, scm_print_state *pstate)
{
int n, i, j;
scm_puts ("...\n", port);
}
+ /* display file name and line number */
+ if (scm_is_true (SCM_PACK (SCM_SHOW_FILE_NAME)))
+ display_backtrace_file_and_line (frame, port, pstate);
+
/* Check size of frame number. */
n = SCM_FRAME_NUMBER (frame);
for (i = 0, j = n; j > 0; ++i) j /= 10;
indent (nfield - (i ? i : 1), port);
/* Frame number. */
- scm_iprin1 (SCM_MAKINUM (n), port, pstate);
+ scm_iprin1 (scm_from_int (n), port, pstate);
/* Real frame marker */
scm_putc (SCM_FRAME_REAL_P (frame) ? '*' : ' ', port);
/* Display a special form. */
{
SCM source = SCM_FRAME_SOURCE (frame);
- SCM copy = (SCM_NIMP (source) && SCM_CONSP (source)
+ SCM copy = (scm_is_pair (source)
? scm_source_property (source, scm_sym_copy)
: SCM_BOOL_F);
- SCM umcopy = (SCM_NIMP (source) && SCM_MEMOIZEDP (source)
- ? scm_unmemoize (source)
+ SCM umcopy = (SCM_MEMOIZEDP (source)
+ ? scm_i_unmemoize_expr (source)
: SCM_BOOL_F);
display_frame_expr ("(",
- SCM_NIMP (copy) && SCM_CONSP (copy) ? copy : umcopy,
+ scm_is_pair (copy) ? copy : umcopy,
")",
nfield + 1 + indentation,
sport,
port,
pstate);
}
+ scm_putc ('\n', port);
/* Announce missing frames? */
if (SCM_BACKWARDS_P && SCM_FRAME_OVERFLOW_P (frame))
SCM port;
SCM first;
SCM depth;
+ SCM highlight_objects;
};
-SCM_PROC(s_display_backtrace, "display-backtrace", 2, 2, 0, scm_display_backtrace);
-
static SCM
display_backtrace_body (struct display_backtrace_args *a)
+#define FUNC_NAME "display_backtrace_body"
{
int n_frames, beg, end, n, i, j;
int nfield, indent_p, indentation;
SCM frame, sport, print_state;
+ SCM last_file;
scm_print_state *pstate;
a->port = SCM_COERCE_OUTPORT (a->port);
/* Argument checking and extraction. */
- SCM_ASSERT (SCM_NIMP (a->stack) && SCM_STACKP (a->stack),
- a->stack,
- SCM_ARG1,
- s_display_backtrace);
- SCM_ASSERT (SCM_NIMP (a->port) && SCM_OPOUTPORTP (a->port),
- a->port,
- SCM_ARG2,
- s_display_backtrace);
- n_frames = SCM_INUM (scm_stack_length (a->stack));
- n = SCM_INUMP (a->depth) ? SCM_INUM (a->depth) : SCM_BACKTRACE_DEPTH;
+ SCM_VALIDATE_STACK (1, a->stack);
+ SCM_VALIDATE_OPOUTPORT (2, a->port);
+ n_frames = scm_to_int (scm_stack_length (a->stack));
+ n = scm_is_integer (a->depth) ? scm_to_int (a->depth) : SCM_BACKTRACE_DEPTH;
if (SCM_BACKWARDS_P)
{
- beg = SCM_INUMP (a->first) ? SCM_INUM (a->first) : 0;
+ beg = scm_is_integer (a->first) ? scm_to_int (a->first) : 0;
end = beg + n - 1;
if (end >= n_frames)
end = n_frames - 1;
}
else
{
- if (SCM_INUMP (a->first))
+ if (scm_is_integer (a->first))
{
- beg = SCM_INUM (a->first);
+ beg = scm_to_int (a->first);
end = beg - n + 1;
if (end < 0)
end = 0;
/* Create a string port used for adaptation of printing parameters. */
sport = scm_mkstrport (SCM_INUM0,
- scm_make_string (SCM_MAKINUM (240), SCM_UNDEFINED),
+ scm_make_string (scm_from_int (240), SCM_UNDEFINED),
SCM_OPN | SCM_WRTNG,
- s_display_backtrace);
+ FUNC_NAME);
/* Create a print state for printing of frames. */
print_state = scm_make_print_state ();
pstate = SCM_PRINT_STATE (print_state);
pstate->writingp = 1;
pstate->fancyp = 1;
- pstate->level = 2;
- pstate->length = 3;
+ pstate->highlight_objects = a->highlight_objects;
/* First find out if it's reasonable to do indentation. */
if (SCM_BACKWARDS_P)
indent_p = 0;
else
{
+ unsigned int j;
+
indent_p = 1;
- frame = scm_stack_ref (a->stack, SCM_MAKINUM (beg));
+ frame = scm_stack_ref (a->stack, scm_from_int (beg));
for (i = 0, j = 0; i < n; ++i)
{
if (SCM_FRAME_REAL_P (frame))
}
/* Determine size of frame number field. */
- j = SCM_FRAME_NUMBER (scm_stack_ref (a->stack, SCM_MAKINUM (end)));
+ j = SCM_FRAME_NUMBER (scm_stack_ref (a->stack, scm_from_int (end)));
for (i = 0; j > 0; ++i) j /= 10;
nfield = i ? i : 1;
- scm_puts ("Backtrace:\n", a->port);
-
/* Print frames. */
- frame = scm_stack_ref (a->stack, SCM_MAKINUM (beg));
+ frame = scm_stack_ref (a->stack, scm_from_int (beg));
indentation = 1;
- display_frame (frame, nfield, indentation, sport, a->port, pstate);
- for (i = 1; i < n; ++i)
+ last_file = SCM_UNDEFINED;
+ for (i = 0; i < n; ++i)
{
+ if (!scm_is_eq (SCM_PACK (SCM_SHOW_FILE_NAME), sym_base))
+ display_backtrace_file (frame, &last_file, a->port, pstate);
+
+ display_frame (frame, nfield, indentation, sport, a->port, pstate);
if (indent_p && SCM_FRAME_EVAL_ARGS_P (frame))
++indentation;
- frame = SCM_BACKWARDS_P ? SCM_FRAME_PREV (frame) : SCM_FRAME_NEXT (frame);
- display_frame (frame, nfield, indentation, sport, a->port, pstate);
+ frame = (SCM_BACKWARDS_P ?
+ SCM_FRAME_PREV (frame) : SCM_FRAME_NEXT (frame));
}
+ scm_remember_upto_here_1 (print_state);
+
return SCM_UNSPECIFIED;
}
-
-SCM
-scm_display_backtrace (stack, port, first, depth)
- SCM stack;
- SCM port;
- SCM first;
- SCM depth;
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_display_backtrace_with_highlights, "display-backtrace", 2, 3, 0,
+ (SCM stack, SCM port, SCM first, SCM depth, SCM highlights),
+ "Display a backtrace to the output port @var{port}. @var{stack}\n"
+ "is the stack to take the backtrace from, @var{first} specifies\n"
+ "where in the stack to start and @var{depth} how many frames\n"
+ "to display. @var{first} and @var{depth} can be @code{#f},\n"
+ "which means that default values will be used.\n"
+ "If @var{highlights} is given it should be a list; the elements\n"
+ "of this list will be highlighted wherever they appear in the\n"
+ "backtrace.")
+#define FUNC_NAME s_scm_display_backtrace_with_highlights
{
struct display_backtrace_args a;
struct display_error_handler_data data;
a.port = port;
a.first = first;
a.depth = depth;
+ if (SCM_UNBNDP (highlights))
+ a.highlight_objects = SCM_EOL;
+ else
+ a.highlight_objects = highlights;
data.mode = "backtrace";
data.port = port;
scm_internal_catch (SCM_BOOL_T,
- (scm_catch_body_t) display_backtrace_body, &a,
- (scm_catch_handler_t) display_error_handler, &data);
+ (scm_t_catch_body) display_backtrace_body, &a,
+ (scm_t_catch_handler) display_error_handler, &data);
return SCM_UNSPECIFIED;
}
+#undef FUNC_NAME
-SCM_VCELL (scm_has_shown_backtrace_hint_p_var, "has-shown-backtrace-hint?");
-
-SCM_PROC(s_backtrace, "backtrace", 0, 0, 0, scm_backtrace);
SCM
-scm_backtrace ()
+scm_display_backtrace (SCM stack, SCM port, SCM first, SCM depth)
+{
+ return scm_display_backtrace_with_highlights (stack, port, first, depth,
+ SCM_EOL);
+}
+
+SCM_VARIABLE (scm_has_shown_backtrace_hint_p_var, "has-shown-backtrace-hint?");
+
+SCM_DEFINE (scm_backtrace_with_highlights, "backtrace", 0, 1, 0,
+ (SCM highlights),
+ "Display a backtrace of the stack saved by the last error\n"
+ "to the current output port. If @var{highlights} is given\n"
+ "it should be a list; the elements of this list will be\n"
+ "highlighted wherever they appear in the backtrace.")
+#define FUNC_NAME s_scm_backtrace_with_highlights
{
- SCM the_last_stack = scm_fluid_ref (SCM_CDR (scm_the_last_stack_fluid));
- if (SCM_NFALSEP (the_last_stack))
+ SCM port = scm_current_output_port ();
+ SCM the_last_stack =
+ scm_fluid_ref (SCM_VARIABLE_REF (scm_the_last_stack_fluid_var));
+
+ if (SCM_UNBNDP (highlights))
+ highlights = SCM_EOL;
+
+ if (scm_is_true (the_last_stack))
{
- scm_newline (scm_cur_outp);
- scm_display_backtrace (the_last_stack,
- scm_cur_outp,
- SCM_UNDEFINED,
- SCM_UNDEFINED);
- scm_newline (scm_cur_outp);
- if (SCM_FALSEP (SCM_CDR (scm_has_shown_backtrace_hint_p_var))
+ scm_newline (port);
+ scm_puts ("Backtrace:\n", port);
+ scm_display_backtrace_with_highlights (the_last_stack,
+ port,
+ SCM_BOOL_F,
+ SCM_BOOL_F,
+ highlights);
+ scm_newline (port);
+ if (scm_is_false (SCM_VARIABLE_REF (scm_has_shown_backtrace_hint_p_var))
&& !SCM_BACKTRACE_P)
{
scm_puts ("Type \"(debug-enable 'backtrace)\" if you would like "
"a backtrace\n"
"automatically if an error occurs in the future.\n",
- scm_cur_outp);
- SCM_SETCDR (scm_has_shown_backtrace_hint_p_var, SCM_BOOL_T);
+ port);
+ SCM_VARIABLE_SET (scm_has_shown_backtrace_hint_p_var, SCM_BOOL_T);
}
}
else
{
- scm_puts ("No backtrace available.\n", scm_cur_outp);
+ scm_puts ("No backtrace available.\n", port);
}
return SCM_UNSPECIFIED;
}
+#undef FUNC_NAME
+
+SCM
+scm_backtrace (void)
+{
+ return scm_backtrace_with_highlights (SCM_EOL);
+}
\f
scm_init_backtrace ()
{
SCM f = scm_make_fluid ();
- scm_the_last_stack_fluid = scm_sysintern ("the-last-stack", f);
+ scm_the_last_stack_fluid_var = scm_c_define ("the-last-stack", f);
-#include "backtrace.x"
+#include "libguile/backtrace.x"
}
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff