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authorMikael Djurfeldt <djurfeldt@nada.kth.se>1998-10-31 13:32:21 +0000
committerMikael Djurfeldt <djurfeldt@nada.kth.se>1998-10-31 13:32:21 +0000
commit99027e3c78040ab99e81eab7fd69c26184b66afc (patch)
tree34f83f65802dcdc73cca333e91727610b7901b3a
parent40cf7e92b2dd9205d5987968d9888c4a4118b5ab (diff)
downloadguile-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.c178
-rw-r--r--libguile/macros.h67
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 (&macrosmob);
+#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 */