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author | Mikael Djurfeldt <djurfeldt@nada.kth.se> | 1998-10-31 13:32:21 +0000 |
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committer | Mikael Djurfeldt <djurfeldt@nada.kth.se> | 1998-10-31 13:32:21 +0000 |
commit | 99027e3c78040ab99e81eab7fd69c26184b66afc (patch) | |
tree | 34f83f65802dcdc73cca333e91727610b7901b3a | |
parent | 40cf7e92b2dd9205d5987968d9888c4a4118b5ab (diff) | |
download | guile-99027e3c78040ab99e81eab7fd69c26184b66afc.tar.gz |
* macros.c, macros.h: New files.
(procedure->syntax, procedure->macro, procedure->memoizing-macro,
macro?, macro-type, macro-name, macro-transformer): Moved from
eval.c
(scm_make_synt): Moved from eval.c
* Makefile.am: Added evalext.c, evalext.h, macros.c, macros.h.
-rw-r--r-- | libguile/macros.c | 178 | ||||
-rw-r--r-- | libguile/macros.h | 67 |
2 files changed, 245 insertions, 0 deletions
diff --git a/libguile/macros.c b/libguile/macros.c new file mode 100644 index 000000000..26b18cce6 --- /dev/null +++ b/libguile/macros.c @@ -0,0 +1,178 @@ +/* Copyright (C) 1995,1996,1997,1998 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 "_scm.h" +#include "smob.h" + +#include "macros.h" + +long scm_tc16_macro; + +static scm_smobfuns macrosmob = {scm_markcdr, scm_free0}; + +SCM_PROC(s_makacro, "procedure->syntax", 1, 0, 0, scm_makacro); + +SCM +scm_makacro (code) + SCM code; +{ + register SCM z; + SCM_NEWCELL (z); + SCM_SETCDR (z, code); + SCM_SETCAR (z, scm_tc16_macro); + return z; +} + + +SCM_PROC(s_makmacro, "procedure->macro", 1, 0, 0, scm_makmacro); + +SCM +scm_makmacro (code) + SCM code; +{ + register SCM z; + SCM_NEWCELL (z); + SCM_SETCDR (z, code); + SCM_SETCAR (z, scm_tc16_macro | (1L << 16)); + return z; +} + + +SCM_PROC(s_makmmacro, "procedure->memoizing-macro", 1, 0, 0, scm_makmmacro); + +SCM +scm_makmmacro (code) + SCM code; +{ + register SCM z; + SCM_NEWCELL (z); + SCM_SETCDR (z, code); + SCM_SETCAR (z, scm_tc16_macro | (2L << 16)); + return z; +} + + +SCM_PROC (s_macro_p, "macro?", 1, 0, 0, scm_macro_p); + +SCM +scm_macro_p (obj) + SCM obj; +{ + return (SCM_NIMP (obj) && SCM_TYP16 (obj) == scm_tc16_macro + ? SCM_BOOL_T + : SCM_BOOL_F); +} + + +SCM_SYMBOL (scm_sym_syntax, "syntax"); +SCM_SYMBOL (scm_sym_macro, "macro"); +SCM_SYMBOL (scm_sym_mmacro, "macro!"); + +SCM_PROC (s_macro_type, "macro-type", 1, 0, 0, scm_macro_type); + +SCM +scm_macro_type (m) + SCM m; +{ + if (!(SCM_NIMP (m) && SCM_TYP16 (m) == scm_tc16_macro)) + return SCM_BOOL_F; + switch ((int) (SCM_CAR (m) >> 16)) + { + case 0: return scm_sym_syntax; + case 1: return scm_sym_macro; + case 2: return scm_sym_mmacro; + default: scm_wrong_type_arg (s_macro_type, 1, m); + } +} + + +SCM_PROC (s_macro_name, "macro-name", 1, 0, 0, scm_macro_name); + +SCM +scm_macro_name (m) + SCM m; +{ + SCM_ASSERT (SCM_NIMP (m) && SCM_TYP16 (m) == scm_tc16_macro, + m, + SCM_ARG1, + s_macro_name); + return scm_procedure_name (SCM_CDR (m)); +} + + +SCM_PROC (s_macro_transformer, "macro-transformer", 1, 0, 0, scm_macro_transformer); + +SCM +scm_macro_transformer (m) + SCM m; +{ + SCM_ASSERT (SCM_NIMP (m) && SCM_TYP16 (m) == scm_tc16_macro, + m, + SCM_ARG1, + s_macro_transformer); + return SCM_CLOSUREP (SCM_CDR (m)) ? SCM_CDR (m) : SCM_BOOL_F; +} + +SCM +scm_make_synt (name, macroizer, fcn) + char *name; + SCM (*macroizer) (); + SCM (*fcn) (); +{ + SCM symcell = scm_sysintern (name, SCM_UNDEFINED); + long tmp = ((((SCM_CELLPTR) (SCM_CAR (symcell))) - scm_heap_org) << 8); + register SCM z; + if ((tmp >> 8) != ((SCM_CELLPTR) (SCM_CAR (symcell)) - scm_heap_org)) + tmp = 0; + SCM_NEWCELL (z); + SCM_SUBRF (z) = fcn; + SCM_SETCAR (z, tmp + scm_tc7_subr_2); + SCM_SETCDR (symcell, macroizer (z)); + return SCM_CAR (symcell); +} + +void +scm_init_macros () +{ + scm_tc16_macro = scm_newsmob (¯osmob); +#include "macros.x" +} diff --git a/libguile/macros.h b/libguile/macros.h new file mode 100644 index 000000000..db8999e45 --- /dev/null +++ b/libguile/macros.h @@ -0,0 +1,67 @@ +/* classes: h_files */ + +#ifndef MACROSH +#define MACROSH +/* Copyright (C) 1998 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" + + + +#define SCM_ASSYNT(_cond, _arg, _pos, _subr) if(!(_cond))scm_wta(_arg, (char *)_pos, _subr); + +extern long scm_tc16_macro; + +extern SCM scm_makacro SCM_P ((SCM code)); +extern SCM scm_makmacro SCM_P ((SCM code)); +extern SCM scm_makmmacro SCM_P ((SCM code)); +extern SCM scm_macro_p SCM_P ((SCM obj)); +extern SCM scm_macro_type SCM_P ((SCM m)); +extern SCM scm_macro_name SCM_P ((SCM m)); +extern SCM scm_macro_transformer SCM_P ((SCM m)); +extern SCM scm_make_synt SCM_P ((char *name, + SCM (*macroizer) (SCM), + SCM (*fcn) ())); +extern void scm_init_macros SCM_P ((void)); + +#endif /* MACROSH */ |