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* 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.
This commit is contained in:
Mikael Djurfeldt
parent
40cf7e92b2
commit
99027e3c78
2 changed files with 245 additions and 0 deletions
178
libguile/macros.c
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178
libguile/macros.c
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/* Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include "_scm.h"
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#include "smob.h"
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#include "macros.h"
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long scm_tc16_macro;
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static scm_smobfuns macrosmob = {scm_markcdr, scm_free0};
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SCM_PROC(s_makacro, "procedure->syntax", 1, 0, 0, scm_makacro);
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SCM
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scm_makacro (code)
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SCM code;
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{
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register SCM z;
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SCM_NEWCELL (z);
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SCM_SETCDR (z, code);
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SCM_SETCAR (z, scm_tc16_macro);
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return z;
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}
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SCM_PROC(s_makmacro, "procedure->macro", 1, 0, 0, scm_makmacro);
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SCM
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scm_makmacro (code)
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SCM code;
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{
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register SCM z;
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SCM_NEWCELL (z);
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SCM_SETCDR (z, code);
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SCM_SETCAR (z, scm_tc16_macro | (1L << 16));
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return z;
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}
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SCM_PROC(s_makmmacro, "procedure->memoizing-macro", 1, 0, 0, scm_makmmacro);
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SCM
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scm_makmmacro (code)
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SCM code;
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{
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register SCM z;
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SCM_NEWCELL (z);
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SCM_SETCDR (z, code);
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SCM_SETCAR (z, scm_tc16_macro | (2L << 16));
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return z;
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}
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SCM_PROC (s_macro_p, "macro?", 1, 0, 0, scm_macro_p);
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SCM
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scm_macro_p (obj)
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SCM obj;
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{
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return (SCM_NIMP (obj) && SCM_TYP16 (obj) == scm_tc16_macro
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? SCM_BOOL_T
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: SCM_BOOL_F);
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}
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SCM_SYMBOL (scm_sym_syntax, "syntax");
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SCM_SYMBOL (scm_sym_macro, "macro");
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SCM_SYMBOL (scm_sym_mmacro, "macro!");
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SCM_PROC (s_macro_type, "macro-type", 1, 0, 0, scm_macro_type);
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SCM
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scm_macro_type (m)
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SCM m;
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{
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if (!(SCM_NIMP (m) && SCM_TYP16 (m) == scm_tc16_macro))
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return SCM_BOOL_F;
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switch ((int) (SCM_CAR (m) >> 16))
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{
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case 0: return scm_sym_syntax;
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case 1: return scm_sym_macro;
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case 2: return scm_sym_mmacro;
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default: scm_wrong_type_arg (s_macro_type, 1, m);
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}
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}
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SCM_PROC (s_macro_name, "macro-name", 1, 0, 0, scm_macro_name);
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SCM
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scm_macro_name (m)
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SCM m;
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{
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SCM_ASSERT (SCM_NIMP (m) && SCM_TYP16 (m) == scm_tc16_macro,
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m,
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SCM_ARG1,
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s_macro_name);
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return scm_procedure_name (SCM_CDR (m));
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}
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SCM_PROC (s_macro_transformer, "macro-transformer", 1, 0, 0, scm_macro_transformer);
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SCM
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scm_macro_transformer (m)
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SCM m;
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{
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SCM_ASSERT (SCM_NIMP (m) && SCM_TYP16 (m) == scm_tc16_macro,
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m,
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SCM_ARG1,
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s_macro_transformer);
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return SCM_CLOSUREP (SCM_CDR (m)) ? SCM_CDR (m) : SCM_BOOL_F;
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}
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SCM
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scm_make_synt (name, macroizer, fcn)
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char *name;
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SCM (*macroizer) ();
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SCM (*fcn) ();
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{
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SCM symcell = scm_sysintern (name, SCM_UNDEFINED);
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long tmp = ((((SCM_CELLPTR) (SCM_CAR (symcell))) - scm_heap_org) << 8);
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register SCM z;
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if ((tmp >> 8) != ((SCM_CELLPTR) (SCM_CAR (symcell)) - scm_heap_org))
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tmp = 0;
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SCM_NEWCELL (z);
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SCM_SUBRF (z) = fcn;
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SCM_SETCAR (z, tmp + scm_tc7_subr_2);
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SCM_SETCDR (symcell, macroizer (z));
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return SCM_CAR (symcell);
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}
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void
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scm_init_macros ()
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{
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scm_tc16_macro = scm_newsmob (¯osmob);
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#include "macros.x"
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}
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67
libguile/macros.h
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67
libguile/macros.h
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/* classes: h_files */
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#ifndef MACROSH
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#define MACROSH
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/* Copyright (C) 1998 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#include "libguile/__scm.h"
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#define SCM_ASSYNT(_cond, _arg, _pos, _subr) if(!(_cond))scm_wta(_arg, (char *)_pos, _subr);
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extern long scm_tc16_macro;
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extern SCM scm_makacro SCM_P ((SCM code));
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extern SCM scm_makmacro SCM_P ((SCM code));
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extern SCM scm_makmmacro SCM_P ((SCM code));
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extern SCM scm_macro_p SCM_P ((SCM obj));
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extern SCM scm_macro_type SCM_P ((SCM m));
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extern SCM scm_macro_name SCM_P ((SCM m));
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extern SCM scm_macro_transformer SCM_P ((SCM m));
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extern SCM scm_make_synt SCM_P ((char *name,
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SCM (*macroizer) (SCM),
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SCM (*fcn) ()));
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extern void scm_init_macros SCM_P ((void));
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#endif /* MACROSH */
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