#include <config.h>
#include <limits.h>
-#include <setjmp.h>
#include <stdio.h>
#include "lisp.h"
#include "blockinput.h"
#include "xterm.h"
#endif
-struct backtrace
-{
- struct backtrace *next;
- Lisp_Object *function;
- Lisp_Object *args; /* Points to vector of args. */
- ptrdiff_t nargs; /* Length of vector. */
- /* Nonzero means call value of debugger when done with this operation. */
- unsigned int debug_on_exit : 1;
-};
-
-static struct backtrace *backtrace_list;
+struct backtrace *backtrace_list;
#if !BYTE_MARK_STACK
static
Lisp_Object Qinhibit_quit;
Lisp_Object Qand_rest;
static Lisp_Object Qand_optional;
-static Lisp_Object Qdebug_on_error;
+static Lisp_Object Qinhibit_debugger;
static Lisp_Object Qdeclare;
Lisp_Object Qinternal_interpreter_environment, Qclosure;
Lisp_Object Vsignaling_function;
-/* Set to non-zero while processing X events. Checked in Feval to
- make sure the Lisp interpreter isn't called from a signal handler,
- which is unsafe because the interpreter isn't reentrant. */
-
-int handling_signal;
-
/* If non-nil, Lisp code must not be run since some part of Emacs is
in an inconsistent state. Currently, x-create-frame uses this to
avoid triggering window-configuration-change-hook while the new
Lisp_Object inhibit_lisp_code;
static Lisp_Object funcall_lambda (Lisp_Object, ptrdiff_t, Lisp_Object *);
-static int interactive_p (int);
+static bool interactive_p (void);
static Lisp_Object apply_lambda (Lisp_Object fun, Lisp_Object args);
-\f
+
+/* Functions to set Lisp_Object slots of struct specbinding. */
+
+static void
+set_specpdl_symbol (Lisp_Object symbol)
+{
+ specpdl_ptr->symbol = symbol;
+}
+
+static void
+set_specpdl_old_value (Lisp_Object oldval)
+{
+ specpdl_ptr->old_value = oldval;
+}
+
void
init_eval_once (void)
{
enum { size = 50 };
- specpdl = xmalloc (size * sizeof (struct specbinding));
+ specpdl = xmalloc (size * sizeof *specpdl);
specpdl_size = size;
specpdl_ptr = specpdl;
/* Don't forget to update docs (lispref node "Local Variables"). */
/* Call the Lisp debugger, giving it argument ARG. */
-static Lisp_Object
+Lisp_Object
call_debugger (Lisp_Object arg)
{
- int debug_while_redisplaying;
+ bool debug_while_redisplaying;
ptrdiff_t count = SPECPDL_INDEX ();
Lisp_Object val;
EMACS_INT old_max = max_specpdl_size;
specbind (intern ("debugger-may-continue"),
debug_while_redisplaying ? Qnil : Qt);
specbind (Qinhibit_redisplay, Qnil);
- specbind (Qdebug_on_error, Qnil);
+ specbind (Qinhibit_debugger, Qt);
#if 0 /* Binding this prevents execution of Lisp code during
redisplay, which necessarily leads to display problems. */
}
-DEFUN ("interactive-p", Finteractive_p, Sinteractive_p, 0, 0, 0,
- doc: /* Return t if the containing function was run directly by user input.
-This means that the function was called with `call-interactively'
-\(which includes being called as the binding of a key)
-and input is currently coming from the keyboard (not a keyboard macro),
-and Emacs is not running in batch mode (`noninteractive' is nil).
-
-The only known proper use of `interactive-p' is in deciding whether to
-display a helpful message, or how to display it. If you're thinking
-of using it for any other purpose, it is quite likely that you're
-making a mistake. Think: what do you want to do when the command is
-called from a keyboard macro?
-
-To test whether your function was called with `call-interactively',
-either (i) add an extra optional argument and give it an `interactive'
-spec that specifies non-nil unconditionally (such as \"p\"); or (ii)
-use `called-interactively-p'. */)
- (void)
-{
- return interactive_p (1) ? Qt : Qnil;
-}
-
-
-DEFUN ("called-interactively-p", Fcalled_interactively_p, Scalled_interactively_p, 0, 1, 0,
- doc: /* Return t if the containing function was called by `call-interactively'.
-If KIND is `interactive', then only return t if the call was made
-interactively by the user, i.e. not in `noninteractive' mode nor
-when `executing-kbd-macro'.
-If KIND is `any', on the other hand, it will return t for any kind of
-interactive call, including being called as the binding of a key, or
-from a keyboard macro, or in `noninteractive' mode.
-
-The only known proper use of `interactive' for KIND is in deciding
-whether to display a helpful message, or how to display it. If you're
-thinking of using it for any other purpose, it is quite likely that
-you're making a mistake. Think: what do you want to do when the
-command is called from a keyboard macro?
-
-This function is meant for implementing advice and other
-function-modifying features. Instead of using this, it is sometimes
-cleaner to give your function an extra optional argument whose
-`interactive' spec specifies non-nil unconditionally (\"p\" is a good
-way to do this), or via (not (or executing-kbd-macro noninteractive)). */)
- (Lisp_Object kind)
-{
- return ((INTERACTIVE || !EQ (kind, intern ("interactive")))
- && interactive_p (1)) ? Qt : Qnil;
-}
-
-
-/* Return 1 if function in which this appears was called using
- call-interactively.
-
- EXCLUDE_SUBRS_P non-zero means always return 0 if the function
- called is a built-in. */
-
-static int
-interactive_p (int exclude_subrs_p)
-{
- struct backtrace *btp;
- Lisp_Object fun;
-
- btp = backtrace_list;
-
- /* If this isn't a byte-compiled function, there may be a frame at
- the top for Finteractive_p. If so, skip it. */
- fun = Findirect_function (*btp->function, Qnil);
- if (SUBRP (fun) && (XSUBR (fun) == &Sinteractive_p
- || XSUBR (fun) == &Scalled_interactively_p))
- btp = btp->next;
-
- /* If we're running an Emacs 18-style byte-compiled function, there
- may be a frame for Fbytecode at the top level. In any version of
- Emacs there can be Fbytecode frames for subexpressions evaluated
- inside catch and condition-case. Skip past them.
-
- If this isn't a byte-compiled function, then we may now be
- looking at several frames for special forms. Skip past them. */
- while (btp
- && (EQ (*btp->function, Qbytecode)
- || btp->nargs == UNEVALLED))
- btp = btp->next;
-
- /* `btp' now points at the frame of the innermost function that isn't
- a special form, ignoring frames for Finteractive_p and/or
- Fbytecode at the top. If this frame is for a built-in function
- (such as load or eval-region) return nil. */
- fun = Findirect_function (*btp->function, Qnil);
- if (exclude_subrs_p && SUBRP (fun))
- return 0;
-
- /* `btp' points to the frame of a Lisp function that called interactive-p.
- Return t if that function was called interactively. */
- if (btp && btp->next && EQ (*btp->next->function, Qcall_interactively))
- return 1;
- return 0;
-}
-
-
DEFUN ("defvaralias", Fdefvaralias, Sdefvaralias, 2, 3, 0,
doc: /* Make NEW-ALIAS a variable alias for symbol BASE-VARIABLE.
Aliased variables always have the same value; setting one sets the other.
/* Do it before evaluating the initial value, for self-references. */
XSYMBOL (sym)->declared_special = 1;
- if (SYMBOL_CONSTANT_P (sym))
- {
- /* For upward compatibility, allow (defvar :foo (quote :foo)). */
- Lisp_Object tem1 = Fcar (tail);
- if (! (CONSP (tem1)
- && EQ (XCAR (tem1), Qquote)
- && CONSP (XCDR (tem1))
- && EQ (XCAR (XCDR (tem1)), sym)))
- error ("Constant symbol `%s' specified in defvar",
- SDATA (SYMBOL_NAME (sym)));
- }
-
if (NILP (tem))
Fset_default (sym, eval_sub (Fcar (tail)));
else
{ /* Check if there is really a global binding rather than just a let
binding that shadows the global unboundness of the var. */
- volatile struct specbinding *pdl = specpdl_ptr;
+ struct specbinding *pdl = specpdl_ptr;
while (pdl > specpdl)
{
if (EQ ((--pdl)->symbol, sym) && !pdl->func
&& EQ (pdl->old_value, Qunbound))
{
- message_with_string ("Warning: defvar ignored because %s is let-bound",
- SYMBOL_NAME (sym), 1);
+ message_with_string
+ ("Warning: defvar ignored because %s is let-bound",
+ SYMBOL_NAME (sym), 1);
break;
}
}
/* A simple (defvar foo) with lexical scoping does "nothing" except
declare that var to be dynamically scoped *locally* (i.e. within
the current file or let-block). */
- Vinternal_interpreter_environment =
- Fcons (sym, Vinternal_interpreter_environment);
+ Vinternal_interpreter_environment
+ = Fcons (sym, Vinternal_interpreter_environment);
else
{
/* Simple (defvar <var>) should not count as a definition at all.
{
/* SYM is not mentioned in ENVIRONMENT.
Look at its function definition. */
+ struct gcpro gcpro1;
+ GCPRO1 (form);
+ def = Fautoload_do_load (def, sym, Qmacro);
+ UNGCPRO;
if (EQ (def, Qunbound) || !CONSP (def))
/* Not defined or definition not suitable. */
break;
- if (EQ (XCAR (def), Qautoload))
- {
- /* Autoloading function: will it be a macro when loaded? */
- tem = Fnth (make_number (4), def);
- if (EQ (tem, Qt) || EQ (tem, Qmacro))
- /* Yes, load it and try again. */
- {
- struct gcpro gcpro1;
- GCPRO1 (form);
- do_autoload (def, sym);
- UNGCPRO;
- continue;
- }
- else
- break;
- }
- else if (!EQ (XCAR (def), Qmacro))
+ if (!EQ (XCAR (def), Qmacro))
break;
else expander = XCDR (def);
}
catchlist = &c;
/* Call FUNC. */
- if (! _setjmp (c.jmp))
+ if (! sys_setjmp (c.jmp))
c.val = (*func) (arg);
/* Throw works by a longjmp that comes right here. */
/* Unwind the specbind, catch, and handler stacks back to CATCH, and
jump to that CATCH, returning VALUE as the value of that catch.
- This is the guts Fthrow and Fsignal; they differ only in the way
+ This is the guts of Fthrow and Fsignal; they differ only in the way
they choose the catch tag to throw to. A catch tag for a
condition-case form has a TAG of Qnil.
the handler stack as we go, so that the proper handlers are in
effect for each unwind-protect clause we run. At the end, restore
some static info saved in CATCH, and longjmp to the location
- specified in the
+ specified there.
This is used for correct unwinding in Fthrow and Fsignal. */
static _Noreturn void
unwind_to_catch (struct catchtag *catch, Lisp_Object value)
{
- int last_time;
+ bool last_time;
/* Save the value in the tag. */
catch->val = value;
/* Restore certain special C variables. */
set_poll_suppress_count (catch->poll_suppress_count);
- UNBLOCK_INPUT_TO (catch->interrupt_input_blocked);
- handling_signal = 0;
+ unblock_input_to (catch->interrupt_input_blocked);
immediate_quit = 0;
do
}
while (! last_time);
-#if HAVE_X_WINDOWS
- /* If x_catch_errors was done, turn it off now.
- (First we give unbind_to a chance to do that.) */
-#if 0 /* This would disable x_catch_errors after x_connection_closed.
- The catch must remain in effect during that delicate
- state. --lorentey */
- x_fully_uncatch_errors ();
-#endif
-#endif
-
byte_stack_list = catch->byte_stack;
gcprolist = catch->gcpro;
#ifdef DEBUG_GCPRO
backtrace_list = catch->backlist;
lisp_eval_depth = catch->lisp_eval_depth;
- _longjmp (catch->jmp, 1);
+ sys_longjmp (catch->jmp, 1);
}
DEFUN ("throw", Fthrow, Sthrow, 2, 2, 0,
usage: (condition-case VAR BODYFORM &rest HANDLERS) */)
(Lisp_Object args)
{
- register Lisp_Object bodyform, handlers;
- volatile Lisp_Object var;
-
- var = Fcar (args);
- bodyform = Fcar (Fcdr (args));
- handlers = Fcdr (Fcdr (args));
+ Lisp_Object var = Fcar (args);
+ Lisp_Object bodyform = Fcar (Fcdr (args));
+ Lisp_Object handlers = Fcdr (Fcdr (args));
return internal_lisp_condition_case (var, bodyform, handlers);
}
c.interrupt_input_blocked = interrupt_input_blocked;
c.gcpro = gcprolist;
c.byte_stack = byte_stack_list;
- if (_setjmp (c.jmp))
+ if (sys_setjmp (c.jmp))
{
if (!NILP (h.var))
specbind (h.var, c.val);
c.interrupt_input_blocked = interrupt_input_blocked;
c.gcpro = gcprolist;
c.byte_stack = byte_stack_list;
- if (_setjmp (c.jmp))
+ if (sys_setjmp (c.jmp))
{
return (*hfun) (c.val);
}
c.interrupt_input_blocked = interrupt_input_blocked;
c.gcpro = gcprolist;
c.byte_stack = byte_stack_list;
- if (_setjmp (c.jmp))
+ if (sys_setjmp (c.jmp))
{
return (*hfun) (c.val);
}
c.interrupt_input_blocked = interrupt_input_blocked;
c.gcpro = gcprolist;
c.byte_stack = byte_stack_list;
- if (_setjmp (c.jmp))
+ if (sys_setjmp (c.jmp))
{
return (*hfun) (c.val);
}
ptrdiff_t nargs,
Lisp_Object *args,
Lisp_Object handlers,
- Lisp_Object (*hfun) (Lisp_Object))
+ Lisp_Object (*hfun) (Lisp_Object err,
+ ptrdiff_t nargs,
+ Lisp_Object *args))
{
Lisp_Object val;
struct catchtag c;
c.interrupt_input_blocked = interrupt_input_blocked;
c.gcpro = gcprolist;
c.byte_stack = byte_stack_list;
- if (_setjmp (c.jmp))
+ if (sys_setjmp (c.jmp))
{
- return (*hfun) (c.val);
+ return (*hfun) (c.val, nargs, args);
}
c.next = catchlist;
catchlist = &c;
\f
static Lisp_Object find_handler_clause (Lisp_Object, Lisp_Object);
-static int maybe_call_debugger (Lisp_Object conditions, Lisp_Object sig,
- Lisp_Object data);
+static bool maybe_call_debugger (Lisp_Object conditions, Lisp_Object sig,
+ Lisp_Object data);
void
process_quit_flag (void)
struct handler *h;
struct backtrace *bp;
- immediate_quit = handling_signal = 0;
+ immediate_quit = 0;
abort_on_gc = 0;
if (gc_in_progress || waiting_for_input)
- abort ();
+ emacs_abort ();
#if 0 /* rms: I don't know why this was here,
but it is surely wrong for an error that is handled. */
if (backtrace_list && !NILP (error_symbol))
{
bp = backtrace_list->next;
- if (bp && bp->function && EQ (*bp->function, Qerror))
+ if (bp && EQ (bp->function, Qerror))
bp = bp->next;
- if (bp && bp->function)
- Vsignaling_function = *bp->function;
+ if (bp)
+ Vsignaling_function = bp->function;
}
for (h = handlerlist; h; h = h->next)
}
if (/* Don't run the debugger for a memory-full error.
- (There is no room in memory to do that!) */
+ (There is no room in memory to do that!) */
!NILP (error_symbol)
&& (!NILP (Vdebug_on_signal)
/* If no handler is present now, try to run the debugger. */
if requested". */
|| EQ (h->handler, Qerror)))
{
- int debugger_called
+ bool debugger_called
= maybe_call_debugger (conditions, error_symbol, data);
/* We can't return values to code which signaled an error, but we
can continue code which has signaled a quit. */
xsignal (Lisp_Object error_symbol, Lisp_Object data)
{
Fsignal (error_symbol, data);
- abort ();
+ emacs_abort ();
}
/* Like xsignal, but takes 0, 1, 2, or 3 args instead of a list. */
}
-/* Return nonzero if LIST is a non-nil atom or
+/* Return true if LIST is a non-nil atom or
a list containing one of CONDITIONS. */
-static int
+static bool
wants_debugger (Lisp_Object list, Lisp_Object conditions)
{
if (NILP (list))
return 0;
}
-/* Return 1 if an error with condition-symbols CONDITIONS,
+/* Return true if an error with condition-symbols CONDITIONS,
and described by SIGNAL-DATA, should skip the debugger
according to debugger-ignored-errors. */
-static int
+static bool
skip_debugger (Lisp_Object conditions, Lisp_Object data)
{
Lisp_Object tail;
- int first_string = 1;
+ bool first_string = 1;
Lisp_Object error_message;
error_message = Qnil;
= SIG is the error symbol, and DATA is the rest of the data.
= SIG is nil, and DATA is (SYMBOL . REST-OF-DATA).
This is for memory-full errors only. */
-static int
+static bool
maybe_call_debugger (Lisp_Object conditions, Lisp_Object sig, Lisp_Object data)
{
Lisp_Object combined_data;
if (
/* Don't try to run the debugger with interrupts blocked.
The editing loop would return anyway. */
- ! INPUT_BLOCKED_P
+ ! input_blocked_p ()
+ && NILP (Vinhibit_debugger)
/* Does user want to enter debugger for this kind of error? */
&& (EQ (sig, Qquit)
? debug_on_quit
/* If function is defined and not as an autoload, don't override. */
if (!EQ (XSYMBOL (function)->function, Qunbound)
- && !(CONSP (XSYMBOL (function)->function)
- && EQ (XCAR (XSYMBOL (function)->function), Qautoload)))
+ && !AUTOLOADP (XSYMBOL (function)->function))
return Qnil;
- if (NILP (Vpurify_flag))
- /* Only add entries after dumping, because the ones before are
- not useful and else we get loads of them from the loaddefs.el. */
- LOADHIST_ATTACH (Fcons (Qautoload, function));
- else if (EQ (docstring, make_number (0)))
+ if (!NILP (Vpurify_flag) && EQ (docstring, make_number (0)))
/* `read1' in lread.c has found the docstring starting with "\
and assumed the docstring will be provided by Snarf-documentation, so it
passed us 0 instead. But that leads to accidental sharing in purecopy's
hash-consing, so we use a (hopefully) unique integer instead. */
- docstring = make_number (XUNTAG (function, Lisp_Symbol));
- return Ffset (function,
- Fpurecopy (list5 (Qautoload, file, docstring,
- interactive, type)));
+ docstring = make_number (XHASH (function));
+ return Fdefalias (function,
+ list5 (Qautoload, file, docstring, interactive, type),
+ Qnil);
}
Lisp_Object
FUNNAME is the symbol which is the function's name.
FUNDEF is the autoload definition (a list). */
-void
-do_autoload (Lisp_Object fundef, Lisp_Object funname)
+DEFUN ("autoload-do-load", Fautoload_do_load, Sautoload_do_load, 1, 3, 0,
+ doc: /* Load FUNDEF which should be an autoload.
+If non-nil, FUNNAME should be the symbol whose function value is FUNDEF,
+in which case the function returns the new autoloaded function value.
+If equal to `macro', MACRO-ONLY specifies that FUNDEF should only be loaded if
+it is defines a macro. */)
+ (Lisp_Object fundef, Lisp_Object funname, Lisp_Object macro_only)
{
ptrdiff_t count = SPECPDL_INDEX ();
- Lisp_Object fun;
struct gcpro gcpro1, gcpro2, gcpro3;
+ if (!CONSP (fundef) || !EQ (Qautoload, XCAR (fundef)))
+ return fundef;
+
+ if (EQ (macro_only, Qmacro))
+ {
+ Lisp_Object kind = Fnth (make_number (4), fundef);
+ if (! (EQ (kind, Qt) || EQ (kind, Qmacro)))
+ return fundef;
+ }
+
/* This is to make sure that loadup.el gives a clear picture
of what files are preloaded and when. */
if (! NILP (Vpurify_flag))
error ("Attempt to autoload %s while preparing to dump",
SDATA (SYMBOL_NAME (funname)));
- fun = funname;
CHECK_SYMBOL (funname);
- GCPRO3 (fun, funname, fundef);
+ GCPRO3 (funname, fundef, macro_only);
/* Preserve the match data. */
record_unwind_save_match_data ();
The value saved here is to be restored into Vautoload_queue. */
record_unwind_protect (un_autoload, Vautoload_queue);
Vautoload_queue = Qt;
- Fload (Fcar (Fcdr (fundef)), Qnil, Qt, Qnil, Qt);
+ /* If `macro_only', assume this autoload to be a "best-effort",
+ so don't signal an error if autoloading fails. */
+ Fload (Fcar (Fcdr (fundef)), macro_only, Qt, Qnil, Qt);
/* Once loading finishes, don't undo it. */
Vautoload_queue = Qt;
unbind_to (count, Qnil);
- fun = Findirect_function (fun, Qnil);
-
- if (!NILP (Fequal (fun, fundef)))
- error ("Autoloading failed to define function %s",
- SDATA (SYMBOL_NAME (funname)));
UNGCPRO;
+
+ if (NILP (funname))
+ return Qnil;
+ else
+ {
+ Lisp_Object fun = Findirect_function (funname, Qnil);
+
+ if (!NILP (Fequal (fun, fundef)))
+ error ("Autoloading failed to define function %s",
+ SDATA (SYMBOL_NAME (funname)));
+ else
+ return fun;
+ }
}
\f
struct backtrace backtrace;
struct gcpro gcpro1, gcpro2, gcpro3;
- if (handling_signal)
- abort ();
-
if (SYMBOLP (form))
{
/* Look up its binding in the lexical environment.
return form;
QUIT;
- if ((consing_since_gc > gc_cons_threshold
- && consing_since_gc > gc_relative_threshold)
- ||
- (!NILP (Vmemory_full) && consing_since_gc > memory_full_cons_threshold))
- {
- GCPRO1 (form);
- Fgarbage_collect ();
- UNGCPRO;
- }
+ maybe_gc ();
if (++lisp_eval_depth > max_lisp_eval_depth)
{
error ("Lisp nesting exceeds `max-lisp-eval-depth'");
}
- original_fun = Fcar (form);
- original_args = Fcdr (form);
+ original_fun = XCAR (form);
+ original_args = XCDR (form);
backtrace.next = backtrace_list;
- backtrace_list = &backtrace;
- backtrace.function = &original_fun; /* This also protects them from gc. */
+ backtrace.function = original_fun; /* This also protects them from gc. */
backtrace.args = &original_args;
backtrace.nargs = UNEVALLED;
backtrace.debug_on_exit = 0;
+ backtrace_list = &backtrace;
if (debug_on_next_call)
do_debug_on_call (Qt);
args_left = original_args;
numargs = Flength (args_left);
- CHECK_CONS_LIST ();
+ check_cons_list ();
if (XINT (numargs) < XSUBR (fun)->min_args
|| (XSUBR (fun)->max_args >= 0
is supported by this code. We need to either rewrite the
subr to use a different argument protocol, or add more
cases to this switch. */
- abort ();
+ emacs_abort ();
}
}
}
xsignal1 (Qinvalid_function, original_fun);
if (EQ (funcar, Qautoload))
{
- do_autoload (fun, original_fun);
+ Fautoload_do_load (fun, original_fun, Qnil);
goto retry;
}
if (EQ (funcar, Qmacro))
- val = eval_sub (apply1 (Fcdr (fun), original_args));
+ {
+ ptrdiff_t count = SPECPDL_INDEX ();
+ Lisp_Object exp;
+ /* Bind lexical-binding during expansion of the macro, so the
+ macro can know reliably if the code it outputs will be
+ interpreted using lexical-binding or not. */
+ specbind (Qlexical_binding,
+ NILP (Vinternal_interpreter_environment) ? Qnil : Qt);
+ exp = apply1 (Fcdr (fun), original_args);
+ unbind_to (count, Qnil);
+ val = eval_sub (exp);
+ }
else if (EQ (funcar, Qlambda)
|| EQ (funcar, Qclosure))
val = apply_lambda (fun, original_args);
else
xsignal1 (Qinvalid_function, original_fun);
}
- CHECK_CONS_LIST ();
+ check_cons_list ();
lisp_eval_depth--;
if (backtrace.debug_on_exit)
gcpro1.nvars = 1 + numargs;
}
- memcpy (funcall_args, args, nargs * sizeof (Lisp_Object));
+ memcpy (funcall_args, args, nargs * word_size);
/* Spread the last arg we got. Its first element goes in
the slot that it used to occupy, hence this value of I. */
i = nargs - 1;
DEFUN ("run-hook-with-args", Frun_hook_with_args,
Srun_hook_with_args, 1, MANY, 0,
doc: /* Run HOOK with the specified arguments ARGS.
-HOOK should be a symbol, a hook variable. If HOOK has a non-nil
-value, that value may be a function or a list of functions to be
-called to run the hook. If the value is a function, it is called with
-the given arguments and its return value is returned. If it is a list
-of functions, those functions are called, in order,
-with the given arguments ARGS.
-It is best not to depend on the value returned by `run-hook-with-args',
-as that may change.
+HOOK should be a symbol, a hook variable. The value of HOOK
+may be nil, a function, or a list of functions. Call each
+function in order with arguments ARGS. The final return value
+is unspecified.
Do not use `make-local-variable' to make a hook variable buffer-local.
Instead, use `add-hook' and specify t for the LOCAL argument.
return run_hook_with_args (nargs, args, funcall_nil);
}
+/* NB this one still documents a specific non-nil return value.
+ (As did run-hook-with-args and run-hook-with-args-until-failure
+ until they were changed in 24.1.) */
DEFUN ("run-hook-with-args-until-success", Frun_hook_with_args_until_success,
Srun_hook_with_args_until_success, 1, MANY, 0,
doc: /* Run HOOK with the specified arguments ARGS.
-HOOK should be a symbol, a hook variable. If HOOK has a non-nil
-value, that value may be a function or a list of functions to be
-called to run the hook. If the value is a function, it is called with
-the given arguments and its return value is returned.
-If it is a list of functions, those functions are called, in order,
-with the given arguments ARGS, until one of them
-returns a non-nil value. Then we return that value.
-However, if they all return nil, we return nil.
+HOOK should be a symbol, a hook variable. The value of HOOK
+may be nil, a function, or a list of functions. Call each
+function in order with arguments ARGS, stopping at the first
+one that returns non-nil, and return that value. Otherwise (if
+all functions return nil, or if there are no functions to call),
+return nil.
Do not use `make-local-variable' to make a hook variable buffer-local.
Instead, use `add-hook' and specify t for the LOCAL argument.
DEFUN ("run-hook-with-args-until-failure", Frun_hook_with_args_until_failure,
Srun_hook_with_args_until_failure, 1, MANY, 0,
doc: /* Run HOOK with the specified arguments ARGS.
-HOOK should be a symbol, a hook variable. If HOOK has a non-nil
-value, that value may be a function or a list of functions to be
-called to run the hook. If the value is a function, it is called with
-the given arguments and its return value is returned.
-If it is a list of functions, those functions are called, in order,
-with the given arguments ARGS, until one of them returns nil.
-Then we return nil. However, if they all return non-nil, we return non-nil.
+HOOK should be a symbol, a hook variable. The value of HOOK
+may be nil, a function, or a list of functions. Call each
+function in order with arguments ARGS, stopping at the first
+one that returns nil, and return nil. Otherwise (if all functions
+return non-nil, or if there are no functions to call), return non-nil
+\(do not rely on the precise return value in this case).
Do not use `make-local-variable' to make a hook variable buffer-local.
Instead, use `add-hook' and specify t for the LOCAL argument.
doc: /* Non-nil if OBJECT is a function. */)
(Lisp_Object object)
{
- if (SYMBOLP (object) && !NILP (Ffboundp (object)))
- {
- object = Findirect_function (object, Qt);
-
- if (CONSP (object) && EQ (XCAR (object), Qautoload))
- {
- /* Autoloaded symbols are functions, except if they load
- macros or keymaps. */
- int i;
- for (i = 0; i < 4 && CONSP (object); i++)
- object = XCDR (object);
-
- return (CONSP (object) && !NILP (XCAR (object))) ? Qnil : Qt;
- }
- }
-
- if (SUBRP (object))
- return (XSUBR (object)->max_args != UNEVALLED) ? Qt : Qnil;
- else if (COMPILEDP (object))
+ if (FUNCTIONP (object))
return Qt;
- else if (CONSP (object))
- {
- Lisp_Object car = XCAR (object);
- return (EQ (car, Qlambda) || EQ (car, Qclosure)) ? Qt : Qnil;
- }
- else
- return Qnil;
+ return Qnil;
}
DEFUN ("funcall", Ffuncall, Sfuncall, 1, MANY, 0,
ptrdiff_t i;
QUIT;
- if ((consing_since_gc > gc_cons_threshold
- && consing_since_gc > gc_relative_threshold)
- ||
- (!NILP (Vmemory_full) && consing_since_gc > memory_full_cons_threshold))
- Fgarbage_collect ();
if (++lisp_eval_depth > max_lisp_eval_depth)
{
}
backtrace.next = backtrace_list;
- backtrace_list = &backtrace;
- backtrace.function = &args[0];
- backtrace.args = &args[1];
+ backtrace.function = args[0];
+ backtrace.args = &args[1]; /* This also GCPROs them. */
backtrace.nargs = nargs - 1;
backtrace.debug_on_exit = 0;
+ backtrace_list = &backtrace;
+
+ /* Call GC after setting up the backtrace, so the latter GCPROs the args. */
+ maybe_gc ();
if (debug_on_next_call)
do_debug_on_call (Qlambda);
- CHECK_CONS_LIST ();
+ check_cons_list ();
original_fun = args[0];
{
if (XSUBR (fun)->max_args > numargs)
{
- internal_args = (Lisp_Object *) alloca (XSUBR (fun)->max_args * sizeof (Lisp_Object));
- memcpy (internal_args, args + 1, numargs * sizeof (Lisp_Object));
+ internal_args = alloca (XSUBR (fun)->max_args
+ * sizeof *internal_args);
+ memcpy (internal_args, args + 1, numargs * word_size);
for (i = numargs; i < XSUBR (fun)->max_args; i++)
internal_args[i] = Qnil;
}
/* If a subr takes more than 8 arguments without using MANY
or UNEVALLED, we need to extend this function to support it.
Until this is done, there is no way to call the function. */
- abort ();
+ emacs_abort ();
}
}
}
val = funcall_lambda (fun, numargs, args + 1);
else if (EQ (funcar, Qautoload))
{
- do_autoload (fun, original_fun);
- CHECK_CONS_LIST ();
+ Fautoload_do_load (fun, original_fun, Qnil);
+ check_cons_list ();
goto retry;
}
else
xsignal1 (Qinvalid_function, original_fun);
}
- CHECK_CONS_LIST ();
+ check_cons_list ();
lisp_eval_depth--;
if (backtrace.debug_on_exit)
val = call_debugger (Fcons (Qexit, Fcons (val, Qnil)));
Lisp_Object val, syms_left, next, lexenv;
ptrdiff_t count = SPECPDL_INDEX ();
ptrdiff_t i;
- int optional, rest;
+ bool optional, rest;
if (CONSP (fun))
{
lexenv = Qnil;
}
else
- abort ();
+ emacs_abort ();
i = optional = rest = 0;
for (; CONSP (syms_left); syms_left = XCDR (syms_left))
{
struct Lisp_Symbol *sym;
- eassert (!handling_signal);
-
CHECK_SYMBOL (symbol);
sym = XSYMBOL (symbol);
if (specpdl_ptr == specpdl + specpdl_size)
case SYMBOL_PLAINVAL:
/* The most common case is that of a non-constant symbol with a
trivial value. Make that as fast as we can. */
- specpdl_ptr->symbol = symbol;
- specpdl_ptr->old_value = SYMBOL_VAL (sym);
+ set_specpdl_symbol (symbol);
+ set_specpdl_old_value (SYMBOL_VAL (sym));
specpdl_ptr->func = NULL;
++specpdl_ptr;
if (!sym->constant)
{
Lisp_Object ovalue = find_symbol_value (symbol);
specpdl_ptr->func = 0;
- specpdl_ptr->old_value = ovalue;
+ set_specpdl_old_value (ovalue);
eassert (sym->redirect != SYMBOL_LOCALIZED
|| (EQ (SYMBOL_BLV (sym)->where,
if (!NILP (Flocal_variable_p (symbol, Qnil)))
{
eassert (sym->redirect != SYMBOL_LOCALIZED
- || (BLV_FOUND (SYMBOL_BLV (sym))
+ || (blv_found (SYMBOL_BLV (sym))
&& EQ (cur_buf, SYMBOL_BLV (sym)->where)));
where = cur_buf;
}
else if (sym->redirect == SYMBOL_LOCALIZED
- && BLV_FOUND (SYMBOL_BLV (sym)))
+ && blv_found (SYMBOL_BLV (sym)))
where = SYMBOL_BLV (sym)->where;
else
where = Qnil;
let_shadows_buffer_binding_p which is itself only used
in set_internal for local_if_set. */
eassert (NILP (where) || EQ (where, cur_buf));
- specpdl_ptr->symbol = Fcons (symbol, Fcons (where, cur_buf));
+ set_specpdl_symbol (Fcons (symbol, Fcons (where, cur_buf)));
/* If SYMBOL is a per-buffer variable which doesn't have a
buffer-local value here, make the `let' change the global
}
}
else
- specpdl_ptr->symbol = symbol;
+ set_specpdl_symbol (symbol);
specpdl_ptr++;
set_internal (symbol, value, Qnil, 1);
break;
}
- default: abort ();
+ default: emacs_abort ();
}
}
void
record_unwind_protect (Lisp_Object (*function) (Lisp_Object), Lisp_Object arg)
{
- eassert (!handling_signal);
-
if (specpdl_ptr == specpdl + specpdl_size)
grow_specpdl ();
specpdl_ptr->func = function;
- specpdl_ptr->symbol = Qnil;
- specpdl_ptr->old_value = arg;
+ set_specpdl_symbol (Qnil);
+ set_specpdl_old_value (arg);
specpdl_ptr++;
}
write_string (backlist->debug_on_exit ? "* " : " ", 2);
if (backlist->nargs == UNEVALLED)
{
- Fprin1 (Fcons (*backlist->function, *backlist->args), Qnil);
+ Fprin1 (Fcons (backlist->function, *backlist->args), Qnil);
write_string ("\n", -1);
}
else
{
- tem = *backlist->function;
+ tem = backlist->function;
Fprin1 (tem, Qnil); /* This can QUIT. */
write_string ("(", -1);
if (backlist->nargs == MANY)
{ /* FIXME: Can this happen? */
- int i;
- for (tail = *backlist->args, i = 0;
- !NILP (tail);
- tail = Fcdr (tail), i = 1)
+ bool later_arg = 0;
+ for (tail = *backlist->args; !NILP (tail); tail = Fcdr (tail))
{
- if (i) write_string (" ", -1);
+ if (later_arg)
+ write_string (" ", -1);
Fprin1 (Fcar (tail), Qnil);
+ later_arg = 1;
}
}
else
if (!backlist)
return Qnil;
if (backlist->nargs == UNEVALLED)
- return Fcons (Qnil, Fcons (*backlist->function, *backlist->args));
+ return Fcons (Qnil, Fcons (backlist->function, *backlist->args));
else
{
if (backlist->nargs == MANY) /* FIXME: Can this happen? */
else
tem = Flist (backlist->nargs, backlist->args);
- return Fcons (Qt, Fcons (*backlist->function, tem));
+ return Fcons (Qt, Fcons (backlist->function, tem));
}
}
for (backlist = backtrace_list; backlist; backlist = backlist->next)
{
- mark_object (*backlist->function);
+ mark_object (backlist->function);
if (backlist->nargs == UNEVALLED
|| backlist->nargs == MANY) /* FIXME: Can this happen? */
DEFSYM (Qinhibit_quit, "inhibit-quit");
DEFSYM (Qautoload, "autoload");
- DEFSYM (Qdebug_on_error, "debug-on-error");
+ DEFSYM (Qinhibit_debugger, "inhibit-debugger");
DEFSYM (Qmacro, "macro");
DEFSYM (Qdeclare, "declare");
DEFSYM (Qclosure, "closure");
DEFSYM (Qdebug, "debug");
+ DEFVAR_LISP ("inhibit-debugger", Vinhibit_debugger,
+ doc: /* Non-nil means never enter the debugger.
+Normally set while the debugger is already active, to avoid recursive
+invocations. */);
+ Vinhibit_debugger = Qnil;
+
DEFVAR_LISP ("debug-on-error", Vdebug_on_error,
doc: /* Non-nil means enter debugger if an error is signaled.
Does not apply to errors handled by `condition-case' or those
When you evaluate an expression interactively, this variable
is temporarily non-nil if `eval-expression-debug-on-error' is non-nil.
The command `toggle-debug-on-error' toggles this.
-See also the variable `debug-on-quit'. */);
+See also the variable `debug-on-quit' and `inhibit-debugger'. */);
Vdebug_on_error = Qnil;
DEFVAR_LISP ("debug-ignored-errors", Vdebug_ignored_errors,
defsubr (&Sunwind_protect);
defsubr (&Scondition_case);
defsubr (&Ssignal);
- defsubr (&Sinteractive_p);
- defsubr (&Scalled_interactively_p);
defsubr (&Scommandp);
defsubr (&Sautoload);
+ defsubr (&Sautoload_do_load);
defsubr (&Seval);
defsubr (&Sapply);
defsubr (&Sfuncall);
HCoop / bpt / emacs.git / blobdiff