http://www.ousob.com --- Legacy Redefined OuSob - File: /wwwroot/clipx/usr/include/libguile/struct.h

/* classes: h_files */ #ifndef SCM_STRUCT_H #define SCM_STRUCT_H /* Copyright (C) 1995,1997,1999,2000,2001 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 * * 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. */ #include "libguile/__scm.h" #include "libguile/print.h" /* Number of words with negative index */ #define scm_struct_n_extra_words 4 #define scm_struct_entity_n_extra_words 6 /* These are how the initial words of a vtable are allocated. */ #define scm_struct_i_setter -6 /* Setter */ #define scm_struct_i_procedure -5 /* Optional procedure slot */ #define scm_struct_i_free -4 /* Destructor */ #define scm_struct_i_ptr -3 /* Start of block (see alloc_struct) */ #define scm_struct_i_n_words -2 /* How many words allocated to this struct? */ #define scm_struct_i_size -1 /* Instance size */ #define scm_struct_i_flags -1 /* Upper 12 bits used as flags */ #define scm_vtable_index_layout 0 /* A symbol describing the physical arrangement of this type. */ #define scm_vtable_index_vcell 1 /* An opaque word, managed by the garbage collector. */ #define scm_vtable_index_vtable 2 /* A pointer to the handle for this vtable. */ #define scm_vtable_index_printer 3 /* A printer for this struct type. */ #define scm_vtable_offset_user 4 /* Where do user fields start? */ typedef size_t (*scm_t_struct_free) (scm_t_bits * vtable, scm_t_bits * data); #define SCM_STRUCTF_MASK (0xFFF << 20) #define SCM_STRUCTF_ENTITY (1L << 30) /* Indicates presence of proc slots */ #define SCM_STRUCTF_LIGHT (1L << 31) /* Light representation (no hidden words) */ /* Dirk:FIXME:: the SCM_STRUCTP predicate is also fulfilled for glocs */ #define SCM_STRUCTP(X) (SCM_NIMP(X) && (SCM_TYP3(X) == scm_tc3_cons_gloc)) #define SCM_STRUCT_DATA(X) ((scm_t_bits *) SCM_CELL_WORD_1 (X)) #define SCM_STRUCT_VTABLE_DATA(X) ((scm_t_bits *) (SCM_CELL_WORD_0 (X) - scm_tc3_cons_gloc)) #define SCM_STRUCT_LAYOUT(X) (SCM_PACK (SCM_STRUCT_VTABLE_DATA (X) [scm_vtable_index_layout])) #define SCM_SET_STRUCT_LAYOUT(X, v) (SCM_STRUCT_VTABLE_DATA (X) [scm_vtable_index_layout] = SCM_UNPACK (v)) #define SCM_STRUCT_VTABLE(X) (SCM_PACK (SCM_STRUCT_VTABLE_DATA (X) [scm_vtable_index_vtable])) #define SCM_STRUCT_VTABLE_FLAGS(X) \ (SCM_STRUCT_VTABLE_DATA (X) [scm_struct_i_flags]) #define SCM_STRUCT_PRINTER(X) (SCM_PACK (SCM_STRUCT_VTABLE_DATA (X) [scm_vtable_index_printer])) #define SCM_SET_STRUCT_PRINTER(x, v)\ (SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_printer] = SCM_UNPACK (v)) #define SCM_SET_VTABLE_DESTRUCTOR(X, D) (SCM_STRUCT_DATA (X) [scm_struct_i_free] = (scm_t_bits) (D)) /* Efficiency is important in the following macro, since it's used in GC */ #define SCM_LAYOUT_TAILP(X) (((X) & 32) == 0) /* R, W or O */ #define SCM_STRUCT_TABLE_NAME(X) SCM_CAR (X) #define SCM_SET_STRUCT_TABLE_NAME(X, NAME) SCM_SETCAR (X, NAME) #define SCM_STRUCT_TABLE_CLASS(X) SCM_CDR (X) #define SCM_SET_STRUCT_TABLE_CLASS(X, CLASS) SCM_SETCDR (X, CLASS) extern SCM scm_struct_table; #define SCM_STRUCT_GC_CHAIN(X) SCM_CELL_OBJECT_3 (X) #define SCM_SET_STRUCT_GC_CHAIN(X, Y) SCM_SET_CELL_OBJECT_3 (X, Y) extern SCM scm_structs_to_free; extern scm_t_bits * scm_alloc_struct (int n_words, int n_extra, char * who); extern size_t scm_struct_free_0 (scm_t_bits * vtable, scm_t_bits * data); extern size_t scm_struct_free_light (scm_t_bits * vtable, scm_t_bits * data); extern size_t scm_struct_free_standard (scm_t_bits * vtable, scm_t_bits * data); extern size_t scm_struct_free_entity (scm_t_bits * vtable, scm_t_bits * data); extern SCM scm_make_struct_layout (SCM fields); extern SCM scm_struct_p (SCM x); extern SCM scm_struct_vtable_p (SCM x); extern SCM scm_make_struct (SCM vtable, SCM tail_array_size, SCM init); extern SCM scm_make_vtable_vtable (SCM extra_fields, SCM tail_array_size, SCM init); extern SCM scm_struct_ref (SCM handle, SCM pos); extern SCM scm_struct_set_x (SCM handle, SCM pos, SCM val); extern SCM scm_struct_vtable (SCM handle); extern SCM scm_struct_vtable_tag (SCM handle); extern unsigned long scm_struct_ihashq (SCM obj, unsigned long n); extern SCM scm_struct_create_handle (SCM obj); extern SCM scm_struct_vtable_name (SCM vtable); extern SCM scm_set_struct_vtable_name_x (SCM vtable, SCM name); extern void scm_print_struct (SCM exp, SCM port, scm_print_state *); extern void scm_struct_prehistory (void); extern void scm_init_struct (void); #endif /* SCM_STRUCT_H */ /* Local Variables: c-file-style: "gnu" End: */