/* classes: h_files */
-#ifndef __SCMH
-#define __SCMH
-/* Copyright (C) 1995, 1996, 1998, 1999 Free Software Foundation, Inc.
- *
+#ifndef SCM___SCM_H
+#define SCM___SCM_H
+
+/* Copyright (C) 1995,1996,1998,1999,2000,2001,2002,2003 Free Software Foundation, Inc.
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 USA
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
* 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. */
+
\f
-/* {Supported Options}
+
+/**********************************************************************
+ This file is Guile's central public header.
+
+ When included by other files, this file should preceed any include
+ other than __scm.h.
+
+ Under *NO* circumstances should new items be added to the global
+ namespace (via adding #define, typedef, or similar to this file) with
+ generic names. This usually means that any new names should be
+ prefixed by either SCM_ or GUILE_. i.e. do *not* #define HAVE_FOO or
+ SIZEOF_BAR. See configure.in, gen-scmconfig.h.in, and
+ gen-scmconfig.c for examples of how to properly handle this issue.
+ The main documentation is in gen-scmconfig.c.
+
+ "What's the difference between _scm.h and __scm.h?"
+
+ _scm.h is not installed; it's only visible to the libguile sources
+ themselves, and it includes config.h, the private config header.
+
+ __scm.h is installed, and is #included by <libguile.h>. If both
+ the client and libguile need some piece of information, and it
+ doesn't fit well into the header file for any particular module, it
+ should go in __scm.h. __scm.h includes scmconfig.h, the public
+ config header.
+ **********************************************************************/
+
+/* What did the configure script discover about the outside world? */
+#include "libguile/scmconfig.h"
+
+\f
+
+/* {Compiler hints}
*
- * These may be defined or undefined.
+ * The following macros are used to provide additional information for the
+ * compiler, which may help to do better error checking and code
+ * optimization. A second benefit of these macros is, that they also provide
+ * additional information to the developers.
*/
-/* #define GUILE_DEBUG_FREELIST */
+/* The macro SCM_NORETURN indicates that a function will never return.
+ * Examples:
+ * 1) int foo (char arg) SCM_NORETURN;
+ */
+#ifdef __GNUC__
+#define SCM_NORETURN __attribute__ ((noreturn))
+#else
+#define SCM_NORETURN
+#endif
-/* If the compile FLAG `SCM_CAUTIOUS' is #defined then the number of
- * arguments is always checked for application of closures. If the
- * compile FLAG `SCM_RECKLESS' is #defined then they are not checked.
- * Otherwise, number of argument checks for closures are made only when
- * the function position (whose value is the closure) of a combination is
- * not an ILOC or GLOC. When the function position of a combination is a
- * symbol it will be checked only the first time it is evaluated because
- * it will then be replaced with an ILOC or GLOC.
+/* The macro SCM_UNUSED indicates that a function, function argument or
+ * variable may potentially be unused.
+ * Examples:
+ * 1) static int unused_function (char arg) SCM_UNUSED;
+ * 2) int foo (char unused_argument SCM_UNUSED);
+ * 3) int unused_variable SCM_UNUSED;
*/
-#undef SCM_RECKLESS
-#define SCM_CAUTIOUS
+#ifdef __GNUC__
+#define SCM_UNUSED __attribute__ ((unused))
+#else
+#define SCM_UNUSED
+#endif
+
-/* After looking up a local for the first time, rewrite the
- * code graph, caching its position.
+/* {Supported Options}
+ *
+ * These may be defined or undefined.
*/
-#define MEMOIZE_LOCALS
+
+/* #define GUILE_DEBUG_FREELIST */
/* All the number support there is.
*/
-#define SCM_FLOATS
#define BIGNUMS
-/* GC should relinquish empty cons-pair arenas.
- */
-#define GC_FREE_SEGMENTS
+/* GC should relinquish empty cons-pair arenas. */
+/* cmm:FIXME look at this after done mangling the GC */
+/* #define GC_FREE_SEGMENTS */
/* Provide a scheme-accessible count-down timer that
* generates a pseudo-interrupt.
*/
#undef ENGNOT
-#undef SCM_CAREFUL_INTS
\f
/* {Unsupported Options}
*
#undef NO_CEVAL_STACK_CHECKING
\f
-/* What did the configure script discover about the outside world? */
-#include "libguile/scmconfig.h"
-#ifdef HAVE_LONG_LONGS
+/* SCM_API is a macro prepended to all function and data definitions
+ which should be exported or imported in the resulting dynamic link
+ library (DLL) in the Win32 port. */
+
+#if defined (SCM_IMPORT)
+# define SCM_API __declspec (dllimport) extern
+#elif defined (SCM_EXPORT) || defined (DLL_EXPORT)
+# define SCM_API __declspec (dllexport) extern
+#else
+# define SCM_API extern
+#endif
+
+\f
-/* Some auto-generated .h files contain unused prototypes
- * that need these typedefs.
+/* {Debugging Options}
+ *
+ * These compile time options determine whether to include code that is only
+ * useful for debugging guile itself or C level extensions to guile. The
+ * common prefix for all option macros of this kind is "SCM_DEBUG_". It is
+ * guaranteed that a macro named SCM_DEBUG_XXX is always defined (typically to
+ * either 0 or 1), i. e. there is no need to test for the undefined case.
+ * This allows to use these definitions comfortably within code, as in the
+ * following example:
+ * #define FOO do { if (SCM_DEBUG_XXX) bar(); else baz(); } while (0)
+ * Any sane compiler will remove the unused branch without any performance
+ * penalty for the resulting code.
+ *
+ * Note: Some SCM_DEBUG_XXX options are not settable at configure time.
+ * To change the value of such options you will have to edit this header
+ * file or give suitable options to make, like:
+ * make all CFLAGS="-DSCM_DEBUG_XXX=1 ..."
+ */
+
+
+/* The value of SCM_DEBUG determines the default for most of the not yet
+ * defined debugging options. This allows, for example, to enable most of the
+ * debugging options by simply defining SCM_DEBUG as 1.
+ */
+#ifndef SCM_DEBUG
+#define SCM_DEBUG 0
+#endif
+
+/* If SCM_DEBUG_CELL_ACCESSES is set to 1, cell accesses will perform
+ * exhaustive parameter checking: It will be verified that cell parameters
+ * actually point to a valid heap cell. Note: If this option is enabled,
+ * guile will run about ten times slower than normally.
+ */
+#ifndef SCM_DEBUG_CELL_ACCESSES
+#define SCM_DEBUG_CELL_ACCESSES SCM_DEBUG
+#endif
+
+/* If SCM_DEBUG_INTERRUPTS is set to 1, with every deferring and allowing of
+ * interrupts a consistency check will be performed.
+ */
+#ifndef SCM_DEBUG_INTERRUPTS
+#define SCM_DEBUG_INTERRUPTS SCM_DEBUG
+#endif
+
+/* If SCM_DEBUG_PAIR_ACCESSES is set to 1, accesses to cons cells will be
+ * exhaustively checked. Note: If this option is enabled, guile will run
+ * slower than normally.
+ */
+#ifndef SCM_DEBUG_PAIR_ACCESSES
+#define SCM_DEBUG_PAIR_ACCESSES SCM_DEBUG
+#endif
+
+/* If SCM_DEBUG_REST_ARGUMENT is set to 1, functions that take rest arguments
+ * will check whether the rest arguments are actually passed as a proper list.
+ * Otherwise, if SCM_DEBUG_REST_ARGUMENT is 0, functions that take rest
+ * arguments will take it for granted that these are passed as a proper list.
+ */
+#ifndef SCM_DEBUG_REST_ARGUMENT
+#define SCM_DEBUG_REST_ARGUMENT SCM_DEBUG
+#endif
+
+/* The macro SCM_DEBUG_TYPING_STRICTNESS indicates what level of type checking
+ * shall be performed with respect to the use of the SCM datatype. The macro
+ * may be defined to one of the values 0, 1 and 2.
+ *
+ * A value of 0 means that there will be no compile time type checking, since
+ * the SCM datatype will be declared as an integral type. This setting should
+ * only be used on systems, where casting from integral types to pointers may
+ * lead to loss of bit information.
+ *
+ * A value of 1 means that there will an intermediate level of compile time
+ * type checking, since the SCM datatype will be declared as a pointer to an
+ * undefined struct. This setting is the default, since it does not cost
+ * anything in terms of performance or code size.
+ *
+ * A value of 2 provides a maximum level of compile time type checking since
+ * the SCM datatype will be declared as a struct. This setting should be used
+ * for _compile time_ type checking only, since the compiled result is likely
+ * to be quite inefficient. The right way to make use of this option is to do
+ * a 'make clean; make CFLAGS=-DSCM_DEBUG_TYPING_STRICTNESS=2', fix your
+ * errors, and then do 'make clean; make'.
*/
-typedef long long long_long;
-typedef unsigned long long ulong_long;
+#ifndef SCM_DEBUG_TYPING_STRICTNESS
+#define SCM_DEBUG_TYPING_STRICTNESS 1
+#endif
-#endif /* HAVE_LONG_LONGS */
+/* If SCM_DEBUG_DEBUGGING_SUPPORT is set to 1, guile will provide a set of
+ * special functions that support debugging with a debugger like gdb or
+ * debugging of guile internals on the scheme level. The behaviour of guile
+ * is not changed by this macro, only the set of functions that are available
+ * will differ. All functions that are introduced this way have the prefix
+ * 'scm_dbg_' on the C level and the prefix 'dbg-' on the scheme level. This
+ * allows to easily determine the set of support functions, given that your
+ * debugger or repl provide automatic name completion. Note that these
+ * functions are intended to be used during interactive debugging sessions
+ * only. They are not considered part of guile's official API. They may
+ * change or disappear without notice or deprecation phase.
+ */
+#ifndef SCM_DEBUG_DEBUGGING_SUPPORT
+#define SCM_DEBUG_DEBUGGING_SUPPORT SCM_DEBUG
+#endif
\f
-/* Define
+/* {Feature Options}
+ *
+ * These compile time options determine whether code for certain features
+ * should be compiled into guile. The common prefix for all option macros
+ * of this kind is "SCM_ENABLE_". It is guaranteed that a macro named
+ * SCM_ENABLE_XXX is defined to be either 0 or 1, i. e. there is no need to
+ * test for the undefined case. This allows to use these definitions
+ * comfortably within code, as in the following example:
+ * #define FOO do { if (SCM_ENABLE_XXX) bar(); else baz(); } while (0)
+ * Any sane compiler will remove the unused branch without any performance
+ * penalty for the resulting code.
*
- * SCM_CHAR_CODE_LIMIT == UCHAR_MAX + 1
- * SCM_MOST_POSITIVE_FIXNUM (LONG_MAX>>2)
- * SCM_MOST_NEGATIVE_FIXNUM == SCM_SRS((long)LONG_MIN, 2)
+ * Note: Some SCM_ENABLE_XXX options are not settable at configure time.
+ * To change the value of such options you will have to edit this header
+ * file or give suitable options to make, like:
+ * make all CFLAGS="-DSCM_ENABLE_XXX=1 ..."
*/
-#ifdef HAVE_LIMITS_H
-# include <limits.h>
-# ifdef UCHAR_MAX
-# define SCM_CHAR_CODE_LIMIT (UCHAR_MAX+1L)
-# else
-# define SCM_CHAR_CODE_LIMIT 256L
-# endif /* def UCHAR_MAX */
-# define SCM_MOST_POSITIVE_FIXNUM (LONG_MAX>>2)
-# ifdef _UNICOS /* Stupid cray bug */
-# define SCM_MOST_NEGATIVE_FIXNUM ((long)LONG_MIN/4)
-# else
-# define SCM_MOST_NEGATIVE_FIXNUM SCM_SRS((long)LONG_MIN, 2)
-# endif /* UNICOS */
-#else
-# define SCM_CHAR_CODE_LIMIT 256L
-# define SCM_MOST_POSITIVE_FIXNUM ((long)((unsigned long)~0L>>3))
-# if (0 != ~0)
-# define SCM_MOST_NEGATIVE_FIXNUM (-SCM_MOST_POSITIVE_FIXNUM-1)
-# else
-# define SCM_MOST_NEGATIVE_FIXNUM (-SCM_MOST_POSITIVE_FIXNUM)
-# endif /* (0 != ~0) */
-#endif /* def HAVE_LIMITS_H */
+/* If SCM_ENABLE_DEPRECATED is set to 1, deprecated code will be included in
+ * guile, as well as some functions to issue run-time warnings about uses of
+ * deprecated functions.
+ */
+#ifndef SCM_ENABLE_DEPRECATED
+#define SCM_ENABLE_DEPRECATED 0
+#endif
+
\f
-#ifdef STDC_HEADERS
-# include <stdlib.h>
-# ifdef AMIGA
-# include <stddef.h>
-# endif /* def AMIGA */
-# define scm_sizet size_t
+/* {Architecture and compiler properties}
+ *
+ * Guile as of today can only work on systems which fulfill at least the
+ * following requirements:
+ *
+ * - scm_t_bits and SCM variables have at least 32 bits.
+ * Guile's type system is based on this assumption.
+ *
+ * - sizeof (scm_t_bits) >= sizeof (void*) and sizeof (SCM) >= sizeof (void*)
+ * Guile's type system is based on this assumption, since it must be
+ * possible to store pointers to cells on the heap in scm_t_bits and SCM
+ * variables.
+ *
+ * - sizeof (scm_t_bits) >= 4 and sizeof (scm_t_bits) is a power of 2.
+ * Guile's type system is based on this assumption. In particular, it is
+ * assumed that cells, i. e. pairs of scm_t_bits variables, are eight
+ * character aligned. This is because three bits of a scm_t_bits variable
+ * that is holding a pointer to a cell on the heap must be available for
+ * storing type data.
+ *
+ * - sizeof (scm_t_bits) <= sizeof (void*) and sizeof (SCM) <= sizeof (void*)
+ * In some parts of guile, scm_t_bits and SCM variables are passed to
+ * functions as void* arguments. Together with the requirement above, this
+ * requires a one-to-one correspondence between the size of a void* and the
+ * sizes of scm_t_bits and SCM variables.
+ *
+ * - numbers are encoded using two's complement.
+ * The implementation of the bitwise scheme level operations is based on
+ * this assumption.
+ *
+ * - ... add more
+ */
+
+#ifdef CHAR_BIT
+# define SCM_CHAR_BIT CHAR_BIT
#else
-# ifdef _SIZE_T
-# define scm_sizet size_t
-# else
-# define scm_sizet unsigned int
-# endif /* def _SIZE_T */
-#endif /* def STDC_HEADERS */
+# define SCM_CHAR_BIT 8
+#endif
+
+#ifdef LONG_BIT
+# define SCM_LONG_BIT LONG_BIT
+#else
+# define SCM_LONG_BIT (SCM_CHAR_BIT * sizeof (long) / sizeof (char))
+#endif
+
+#ifdef UCHAR_MAX
+# define SCM_CHAR_CODE_LIMIT (UCHAR_MAX + 1L)
+#else
+# define SCM_CHAR_CODE_LIMIT 256L
+#endif
+
+#define SCM_I_UTYPE_MAX(type) ((type)-1)
+#define SCM_I_TYPE_MAX(type,umax) ((type)((umax)/2))
+#define SCM_I_TYPE_MIN(type,umax) (-((type)((umax)/2))-1)
+
+#define SCM_T_UINT8_MAX SCM_I_UTYPE_MAX(scm_t_uint8)
+#define SCM_T_INT8_MIN SCM_I_TYPE_MIN(scm_t_int8,SCM_T_UINT8_MAX)
+#define SCM_T_INT8_MAX SCM_I_TYPE_MAX(scm_t_int8,SCM_T_UINT8_MAX)
+
+#define SCM_T_UINT16_MAX SCM_I_UTYPE_MAX(scm_t_uint16)
+#define SCM_T_INT16_MIN SCM_I_TYPE_MIN(scm_t_int16,SCM_T_UINT16_MAX)
+#define SCM_T_INT16_MAX SCM_I_TYPE_MAX(scm_t_int16,SCM_T_UINT16_MAX)
+
+#define SCM_T_UINT32_MAX SCM_I_UTYPE_MAX(scm_t_uint32)
+#define SCM_T_INT32_MIN SCM_I_TYPE_MIN(scm_t_int32,SCM_T_UINT32_MAX)
+#define SCM_T_INT32_MAX SCM_I_TYPE_MAX(scm_t_int32,SCM_T_UINT32_MAX)
+
+#if SCM_HAVE_T_INT64
+#define SCM_T_UINT64_MAX SCM_I_UTYPE_MAX(scm_t_uint64)
+#define SCM_T_INT64_MIN SCM_I_TYPE_MIN(scm_t_int64,SCM_T_UINT64_MAX)
+#define SCM_T_INT64_MAX SCM_I_TYPE_MAX(scm_t_int64,SCM_T_UINT64_MAX)
+#endif
+
+#if SCM_SIZEOF_LONG_LONG
+#define SCM_I_ULLONG_MAX SCM_I_UTYPE_MAX(unsigned long long)
+#define SCM_I_LLONG_MIN SCM_I_TYPE_MIN(long long,SCM_I_ULLONG_MAX)
+#define SCM_I_LLONG_MAX SCM_I_TYPE_MAX(long long,SCM_I_ULLONG_MAX)
+#endif
+
+#define SCM_T_UINTMAX_MAX SCM_I_UTYPE_MAX(scm_t_uintmax)
+#define SCM_T_INTMAX_MIN SCM_I_TYPE_MIN(scm_t_intmax,SCM_T_UINTMAX_MAX)
+#define SCM_T_INTMAX_MAX SCM_I_TYPE_MAX(scm_t_intmax,SCM_T_UINTMAX_MAX)
+
+#define SCM_I_SIZE_MAX SCM_I_UTYPE_MAX(size_t)
+#define SCM_I_SSIZE_MIN SCM_I_TYPE_MIN(ssize_t,SCM_I_SIZE_MAX)
+#define SCM_I_SSIZE_MAX SCM_I_TYPE_MAX(ssize_t,SCM_I_SIZE_MAX)
\f
/* James Clark came up with this neat one instruction fix for
* continuations on the SPARC. It flushes the register windows so
- * that all the state of the process is contained in the stack.
+ * that all the state of the process is contained in the stack.
*/
-#ifdef sparc
+#if defined (sparc) || defined (__sparc__) || defined (__sparc)
# define SCM_FLUSH_REGISTER_WINDOWS asm("ta 3")
#else
# define SCM_FLUSH_REGISTER_WINDOWS /* empty */
#endif
-/* If stack is not longword aligned then
+/* If stack is not longword aligned then
*/
/* #define SHORT_ALIGN */
#else
typedef long SCM_STACKITEM;
#endif
-\f
-
-#ifndef USE_THREADS
-#define SCM_THREAD_DEFER
-#define SCM_THREAD_ALLOW
-#define SCM_THREAD_REDEFER
-#define SCM_THREAD_REALLOW_1
-#define SCM_THREAD_REALLOW_2
-#define SCM_THREAD_SWITCHING_CODE
-#endif
-extern unsigned int scm_async_clock;
+/* Cast pointer through (void *) in order to avoid compiler warnings
+ when strict aliasing is enabled */
+#define SCM_STACK_PTR(ptr) ((SCM_STACKITEM *) (void *) (ptr))
+\f
-#define SCM_ASYNC_TICK \
+#define SCM_ASYNC_TICK /*fixme* should change names */ \
do { \
- if (0 == --scm_async_clock) \
+ if (SCM_I_CURRENT_THREAD->pending_asyncs) \
scm_async_click (); \
-} while(0)
-
-#ifdef SCM_CAREFUL_INTS
-#define SCM_CHECK_NOT_DISABLED \
- if (scm_ints_disabled) \
- fputs("ints already disabled\n", stderr); \
-
-#define SCM_CHECK_NOT_ENABLED \
- if (!scm_ints_disabled) \
- fputs("ints already enabled\n", stderr); \
-
-#else
-#define SCM_CHECK_NOT_DISABLED
-#define SCM_CHECK_NOT_ENABLED
-#endif
+} while (0)
/* Anthony Green writes:
are implicitly volatile. */
#ifdef __GNUC__
#define SCM_FENCE asm /* volatile */ ("")
+#elif defined (__INTEL_COMPILER) && defined (__ia64)
+#define SCM_FENCE __memory_barrier()
#else
#define SCM_FENCE
#endif
-#define SCM_DEFER_INTS \
-do { \
- SCM_FENCE; \
- SCM_CHECK_NOT_DISABLED; \
- SCM_THREAD_DEFER; \
- SCM_FENCE; \
- scm_ints_disabled = 1; \
- SCM_FENCE; \
-} while (0)
-
-
-#define SCM_ALLOW_INTS_ONLY \
-do { \
- SCM_THREAD_ALLOW; \
- scm_ints_disabled = 0; \
-} while (0)
-
-
-#define SCM_ALLOW_INTS \
+#define SCM_TICK \
do { \
- SCM_FENCE; \
- SCM_CHECK_NOT_ENABLED; \
- SCM_THREAD_SWITCHING_CODE; \
- SCM_FENCE; \
- scm_ints_disabled = 0; \
- SCM_FENCE; \
- SCM_THREAD_ALLOW; \
SCM_ASYNC_TICK; \
- SCM_FENCE; \
-} while (0)
-
-
-#define SCM_REDEFER_INTS \
-do { \
- SCM_FENCE; \
- SCM_THREAD_REDEFER; \
- ++scm_ints_disabled; \
- SCM_FENCE; \
-} while (0)
-
-
-#define SCM_REALLOW_INTS \
-do { \
- SCM_FENCE; \
- SCM_THREAD_REALLOW_1; \
SCM_THREAD_SWITCHING_CODE; \
- SCM_FENCE; \
- --scm_ints_disabled; \
- if (!scm_ints_disabled) \
- { \
- SCM_THREAD_REALLOW_2; \
- SCM_ASYNC_TICK; \
- } \
- SCM_FENCE; \
-} while (0)
-
-
-#define SCM_TICK \
-do { \
- SCM_DEFER_INTS; \
- SCM_ALLOW_INTS; \
} while (0)
\f
-/* Classification of critical sections
- *
- * When Guile moves to POSIX threads, it won't be possible to prevent
- * context switching. In fact, the whole idea of context switching is
- * bogus if threads are run by different processors. Therefore, we
- * must ultimately eliminate all critical sections or enforce them by
- * use of mutecis.
- *
- * All instances of SCM_DEFER_INTS and SCM_ALLOW_INTS should therefore
- * be classified and replaced by one of the delimiters below. If you
- * understand what this is all about, I'd like to encourage you to
- * help with this task. The set of classes below must of course be
- * incrementally augmented.
- *
- * MDJ 980419 <djurfeldt@nada.kth.se>
- */
-
-/* A sections
- *
- * Allocation of a cell with type tag in the CAR.
- *
- * With POSIX threads, each thread will have a private pool of free
- * cells. Therefore, this type of section can be removed. But! It
- * is important that the CDR is initialized first (with the CAR still
- * indicating a free cell) so that we can guarantee a consistent heap
- * at all times.
- */
-
-#ifdef SCM_POSIX_THREADS
-#define SCM_ENTER_A_SECTION
-#define SCM_EXIT_A_SECTION
-#else
-#define SCM_ENTER_A_SECTION SCM_DEFER_INTS
-#define SCM_EXIT_A_SECTION SCM_ALLOW_INTS
-#endif
-
-\f
-
/** SCM_ASSERT
- **
+ **
**/
#ifdef SCM_RECKLESS
#define SCM_ASSERT(_cond, _arg, _pos, _subr)
+#define SCM_ASSERT_TYPE(_cond, _arg, _pos, _subr, _msg)
#define SCM_ASRTGO(_cond, _label)
#else
#define SCM_ASSERT(_cond, _arg, _pos, _subr) \
- if (!(_cond)) \
- scm_wta(_arg, (char *)(_pos), _subr)
+ do { if (!(_cond)) \
+ scm_wrong_type_arg (_subr, _pos, _arg); } while (0)
+#define SCM_ASSERT_TYPE(_cond, _arg, _pos, _subr, _msg) \
+ do { if (!(_cond)) \
+ scm_wrong_type_arg_msg(_subr, _pos, _arg, _msg); } while (0)
#define SCM_ASRTGO(_cond, _label) \
- if (!(_cond)) \
- goto _label
+ do { if (!(_cond)) \
+ goto _label; } while (0)
#endif
/*
* SCM_WTA_DISPATCH
*/
-extern SCM scm_call_generic_0 (SCM gf);
+/* Dirk:FIXME:: In all of the SCM_WTA_DISPATCH_* macros it is assumed that
+ * 'gf' is zero if uninitialized. It would be cleaner if some valid SCM value
+ * like SCM_BOOL_F or SCM_UNDEFINED was chosen.
+ */
+
+SCM_API SCM scm_call_generic_0 (SCM gf);
-#define SCM_WTA_DISPATCH_0(gf, arg, pos, subr) \
- return ((gf) \
- ? scm_call_generic_0 ((gf)) \
- : scm_wta ((arg), (char *) (pos), (subr)))
-#define SCM_GASSERT0(cond, gf, arg, pos, subr) \
- if (!(cond)) SCM_WTA_DISPATCH_0((gf), (arg), (pos), (subr))
+#define SCM_WTA_DISPATCH_0(gf, subr) \
+ return (SCM_UNPACK (gf) \
+ ? scm_call_generic_0 ((gf)) \
+ : (scm_error_num_args_subr ((subr)), SCM_UNSPECIFIED))
+#define SCM_GASSERT0(cond, gf, subr) \
+ if (!(cond)) SCM_WTA_DISPATCH_0((gf), (subr))
-extern SCM scm_call_generic_1 (SCM gf, SCM a1);
+SCM_API SCM scm_call_generic_1 (SCM gf, SCM a1);
-#define SCM_WTA_DISPATCH_1(gf, a1, pos, subr) \
- return ((gf) \
- ? scm_call_generic_1 ((gf), (a1)) \
- : scm_wta ((a1), (char *) (pos), (subr)))
+#define SCM_WTA_DISPATCH_1(gf, a1, pos, subr) \
+ return (SCM_UNPACK (gf) \
+ ? scm_call_generic_1 ((gf), (a1)) \
+ : (scm_wrong_type_arg ((subr), (pos), (a1)), SCM_UNSPECIFIED))
#define SCM_GASSERT1(cond, gf, a1, pos, subr) \
if (!(cond)) SCM_WTA_DISPATCH_1((gf), (a1), (pos), (subr))
-extern SCM scm_call_generic_2 (SCM gf, SCM a1, SCM a2);
+SCM_API SCM scm_call_generic_2 (SCM gf, SCM a1, SCM a2);
-#define SCM_WTA_DISPATCH_2(gf, a1, a2, pos, subr) \
- return ((gf) \
- ? scm_call_generic_2 ((gf), (a1), (a2)) \
- : scm_wta ((pos) == SCM_ARG1 ? (a1) : (a2), (char *) (pos), (subr)))
+#define SCM_WTA_DISPATCH_2(gf, a1, a2, pos, subr) \
+ return (SCM_UNPACK (gf) \
+ ? scm_call_generic_2 ((gf), (a1), (a2)) \
+ : (scm_wrong_type_arg ((subr), (pos), \
+ (pos) == SCM_ARG1 ? (a1) : (a2)), \
+ SCM_UNSPECIFIED))
#define SCM_GASSERT2(cond, gf, a1, a2, pos, subr) \
if (!(cond)) SCM_WTA_DISPATCH_2((gf), (a1), (a2), (pos), (subr))
-extern SCM scm_apply_generic (SCM gf, SCM args);
+SCM_API SCM scm_apply_generic (SCM gf, SCM args);
-#define SCM_WTA_DISPATCH_n(gf, args, pos, subr) \
- return ((gf) \
- ? scm_apply_generic ((gf), (args)) \
- : scm_wta (scm_list_ref ((args), SCM_MAKINUM ((pos) - 1)), \
- (char *) (pos), \
- (subr)))
+#define SCM_WTA_DISPATCH_n(gf, args, pos, subr) \
+ return (SCM_UNPACK (gf) \
+ ? scm_apply_generic ((gf), (args)) \
+ : (scm_wrong_type_arg ((subr), (pos), \
+ scm_list_ref ((args), \
+ scm_from_int ((pos) - 1))), \
+ SCM_UNSPECIFIED))
#define SCM_GASSERTn(cond, gf, args, pos, subr) \
if (!(cond)) SCM_WTA_DISPATCH_n((gf), (args), (pos), (subr))
#define SCM_ARG4 4
#define SCM_ARG5 5
#define SCM_ARG6 6
-#define SCM_ARG7 7
- /* #define SCM_ARGERR(X) ((X) < SCM_WNA \
- ? (char *)(X) \
- : "wrong type argument")
- */
-
-/* Following must match entry indexes in scm_errmsgs[].
- * Also, SCM_WNA must follow the last SCM_ARGn in sequence.
- */
-#define SCM_WNA 8
- /* #define SCM_OVSCM_FLOW 9 */
-#define SCM_OUTOFRANGE 10
-#define SCM_NALLOC 11
- /* #define SCM_STACK_OVFLOW 12 */
- /* #define SCM_EXIT 13 */
+#define SCM_ARG7 7
#endif /* SCM_MAGIC_SNARFER */
-/* (...still matching scm_errmsgs) These
- * are signals. Signals may become errors
- * but are distinguished because they first
- * try to invoke a handler that can resume
- * the interrupted routine.
- */
-#define SCM_HUP_SIGNAL 14
-#define SCM_INT_SIGNAL 15
-#define SCM_FPE_SIGNAL 16
-#define SCM_BUS_SIGNAL 17
-#define SCM_SEGV_SIGNAL 18
-#define SCM_ALRM_SIGNAL 19
-#define SCM_GC_SIGNAL 20
-#define SCM_TICK_SIGNAL 21
-
-#define SCM_SIG_ORD(X) ((X) - SCM_HUP_SIGNAL)
-#define SCM_ORD_SIG(X) ((X) + SCM_HUP_SIGNAL)
-#define SCM_NUM_SIGS (SCM_SIG_ORD (SCM_TICK_SIGNAL) + 1)
-
-#if 0
-struct errdesc
-{
- char *msg;
- char *s_response;
- short parent_err;
-};
-
-
-extern struct errdesc scm_errmsgs[];
-#endif
-
\f
/* SCM_EXIT_SUCCESS is the default code to return from SCM if no errors
#endif /* def vms */
#endif /* ndef SCM_EXIT_FAILURE */
+/* Define SCM_C_INLINE_KEYWORD so that it can be used as a replacement
+ for the "inline" keyword, expanding to nothing when "inline" is not
+ available.
+*/
+#ifdef SCM_C_INLINE
+#define SCM_C_INLINE_KEYWORD SCM_C_INLINE
+#else
+#define SCM_C_INLINE_KEYWORD
+#endif
-\f
+#endif /* SCM___SCM_H */
-#endif /* __SCMH */
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff