1 /* Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2, or (at your option)
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this software; see the file COPYING. If not, write to
15 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
16 * Boston, MA 02111-1307 USA
18 * As a special exception, the Free Software Foundation gives permission
19 * for additional uses of the text contained in its release of GUILE.
21 * The exception is that, if you link the GUILE library with other files
22 * to produce an executable, this does not by itself cause the
23 * resulting executable to be covered by the GNU General Public License.
24 * Your use of that executable is in no way restricted on account of
25 * linking the GUILE library code into it.
27 * This exception does not however invalidate any other reasons why
28 * the executable file might be covered by the GNU General Public License.
30 * This exception applies only to the code released by the
31 * Free Software Foundation under the name GUILE. If you copy
32 * code from other Free Software Foundation releases into a copy of
33 * GUILE, as the General Public License permits, the exception does
34 * not apply to the code that you add in this way. To avoid misleading
35 * anyone as to the status of such modified files, you must delete
36 * this exception notice from them.
38 * If you write modifications of your own for GUILE, it is your choice
39 * whether to permit this exception to apply to your modifications.
40 * If you do not wish that, delete this exception notice. */
50 SCM_PROC(s_makacro
, "procedure->syntax", 1, 0, 0, scm_makacro
);
56 SCM_ASSERT (SCM_NFALSEP (scm_procedure_p (code
)),
57 code
, SCM_ARG1
, s_makacro
);
58 SCM_RETURN_NEWSMOB (scm_tc16_macro
, code
);
62 SCM_PROC(s_makmacro
, "procedure->macro", 1, 0, 0, scm_makmacro
);
68 SCM_ASSERT (SCM_NFALSEP (scm_procedure_p (code
)),
69 code
, SCM_ARG1
, s_makmacro
);
70 SCM_RETURN_NEWSMOB (scm_tc16_macro
| (1L << 16), code
);
74 SCM_PROC(s_makmmacro
, "procedure->memoizing-macro", 1, 0, 0, scm_makmmacro
);
80 SCM_ASSERT (SCM_NFALSEP (scm_procedure_p (code
)),
81 code
, SCM_ARG1
, s_makmmacro
);
82 SCM_RETURN_NEWSMOB (scm_tc16_macro
| (2L << 16), code
);
86 SCM_PROC (s_macro_p
, "macro?", 1, 0, 0, scm_macro_p
);
92 return (SCM_NIMP (obj
) && SCM_TYP16 (obj
) == scm_tc16_macro
98 SCM_SYMBOL (scm_sym_syntax
, "syntax");
99 SCM_SYMBOL (scm_sym_macro
, "macro");
100 SCM_SYMBOL (scm_sym_mmacro
, "macro!");
102 SCM_PROC (s_macro_type
, "macro-type", 1, 0, 0, scm_macro_type
);
108 if (!(SCM_NIMP (m
) && SCM_TYP16 (m
) == scm_tc16_macro
))
110 switch ((int) (SCM_CAR (m
) >> 16))
112 case 0: return scm_sym_syntax
;
113 case 1: return scm_sym_macro
;
114 case 2: return scm_sym_mmacro
;
115 default: scm_wrong_type_arg (s_macro_type
, 1, m
);
120 SCM_PROC (s_macro_name
, "macro-name", 1, 0, 0, scm_macro_name
);
126 SCM_ASSERT (SCM_NIMP (m
) && SCM_TYP16 (m
) == scm_tc16_macro
,
130 return scm_procedure_name (SCM_CDR (m
));
134 SCM_PROC (s_macro_transformer
, "macro-transformer", 1, 0, 0, scm_macro_transformer
);
137 scm_macro_transformer (m
)
140 SCM_ASSERT (SCM_NIMP (m
) && SCM_TYP16 (m
) == scm_tc16_macro
,
143 s_macro_transformer
);
144 return SCM_CLOSUREP (SCM_CDR (m
)) ? SCM_CDR (m
) : SCM_BOOL_F
;
148 scm_make_synt (name
, macroizer
, fcn
)
153 SCM symcell
= scm_sysintern (name
, SCM_UNDEFINED
);
154 long tmp
= ((((SCM_CELLPTR
) (SCM_CAR (symcell
))) - scm_heap_org
) << 8);
156 if ((tmp
>> 8) != ((SCM_CELLPTR
) (SCM_CAR (symcell
)) - scm_heap_org
))
160 SCM_SETCAR (z
, tmp
+ scm_tc7_subr_2
);
161 SCM_SETCDR (symcell
, macroizer (z
));
162 return SCM_CAR (symcell
);
168 scm_tc16_macro
= scm_make_smob_type_mfpe ("macro", 0,
169 scm_markcdr
, NULL
, NULL
, NULL
);