core: Split-off cache, display, reader.
* mes.c: Remove cache, display, reader functions. * cache.c: New file. * display.c: New file. * reader.c: New file.
This commit is contained in:
Jan Nieuwenhuizen
parent
1614d13439
commit
f26c7222b2
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@ -5,10 +5,10 @@ default: all
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./configure
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OUT:=out
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#CFLAGS:=-std=c99 -O3 -finline-functions
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CFLAGS:=-std=c99 -O3 -finline-functions
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#CFLAGS:=-std=c99 -O0
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#CFLAGS:=-pg -std=c99 -O0
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CFLAGS:=-std=c99 -O0 -g
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#CFLAGS:=-std=c99 -O0 -g
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export BOOT
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ifneq ($(BOOT),)
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@ -24,11 +24,14 @@ all: mes
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mes.o: mes.c
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mes.o: mes.c mes.h mes.i mes.environment.i mes.symbols.i
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mes.o: cache.c cache.h cache.i cache.environment.i
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mes.o: define.c define.h define.i define.environment.i
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mes.o: display.c display.h display.i display.environment.i
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mes.o: lib.c lib.h lib.i lib.environment.i
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mes.o: math.c math.h math.i math.environment.i
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mes.o: posix.c posix.h posix.i posix.environment.i
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mes.o: quasiquote.c quasiquote.h quasiquote.i quasiquote.environment.i
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mes.o: reader.c reader.h reader.i reader.environment.i
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mes.o: string.c string.h string.i string.environment.i
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mes.o: type.c type.h type.i type.environment.i
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103
cache.c
Normal file
103
cache.c
Normal file
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@ -0,0 +1,103 @@
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/* -*-comment-start: "//";comment-end:""-*-
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* Mes --- Maxwell Equations of Software
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* Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of Mes.
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*
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* Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* Mes is distributed in the hope that it will be useful, but
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* 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 Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define CACHE_SIZE 30
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#define ENV_HEAD 15
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#if! ENV_CACHE
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SCM cache_invalidate (SCM x){}
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SCM cache_invalidate_range (SCM p,SCM a){}
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SCM cache_save (SCM p){}
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SCM cache_lookup (SCM x){}
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#else // ENV_CACHE
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SCM env_cache_cars[CACHE_SIZE];
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SCM env_cache_cdrs[CACHE_SIZE];
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int cache_threshold = 0;
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SCM
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cache_save (SCM p)
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{
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int n = g_cells[car (p)].hits;
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if (n < cache_threshold) return cell_unspecified;
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int j = -1;
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for (int i=0; i < CACHE_SIZE; i++) {
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if (!env_cache_cars[i]) {
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j = i;
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break;
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}
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if (env_cache_cars[i] == car (p)) return cell_unspecified;
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if (n > g_cells[env_cache_cars[i]].hits) {
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n = g_cells[env_cache_cars[i]].hits;
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j = i;
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}
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}
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if (j >= 0) {
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cache_threshold = g_cells[car (p)].hits;
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env_cache_cars[j] = car (p);
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env_cache_cdrs[j] = cdr (p);
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}
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return cell_unspecified;
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}
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SCM
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cache_lookup (SCM x)
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{
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for (int i=0; i < CACHE_SIZE; i++) {
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if (!env_cache_cars[i]) break;
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if (env_cache_cars[i] == x) return env_cache_cdrs[i];
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}
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return cell_undefined;
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}
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SCM
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cache_invalidate (SCM x)
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{
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for (int i=0; i < CACHE_SIZE; i++) {
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if (env_cache_cars[i] == x) {
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env_cache_cars[i] = 0;
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break;
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}
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}
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return cell_unspecified;
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}
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SCM
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cache_invalidate_range (SCM p, SCM a)
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{
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do {
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cache_invalidate (caar (p));
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p = cdr (p);
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} while (p != a);
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return cell_unspecified;
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}
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SCM
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assq_ref_cache (SCM x, SCM a) ///((internal))
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{
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g_cells[x].hits++;
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SCM c = cache_lookup (x);
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if (c != cell_undefined) return c;
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int i = 0;
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while (a != cell_nil && x != CAAR (a)) {i++;a = cdr (a);}
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if (a == cell_nil) return cell_undefined;
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if (i>ENV_HEAD) cache_save (car (a));
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return cdar (a);
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}
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#endif // ENV_CACHE
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144
display.c
Normal file
144
display.c
Normal file
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@ -0,0 +1,144 @@
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/* -*-comment-start: "//";comment-end:""-*-
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* Mes --- Maxwell Equations of Software
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* Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of Mes.
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*
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* Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* Mes is distributed in the hope that it will be useful, but
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* 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 Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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SCM display_helper (FILE*, SCM , bool, char const*, bool);
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SCM
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display (SCM x) ///((arity . n))
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{
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SCM e = car (x);
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SCM p = cdr (x);
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int fd = 1;
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if (TYPE (p) == PAIR && TYPE (car (p)) == NUMBER) fd = HITS (car (p));
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FILE *f = fd == 1 ? stdout : stderr;
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return display_helper (f, e, false, "", false);
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}
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SCM
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newline (SCM p) ///((arity . n))
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{
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int fd = 1;
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if (TYPE (p) == PAIR && TYPE (car (p)) == NUMBER) fd = VALUE (car (p));
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FILE *f = fd == 1 ? stdout : stderr;
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fputs ("\n", f);
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return cell_unspecified;
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}
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SCM
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display_ (FILE* f, SCM x)
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{
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return display_helper (f, x, false, "", false);
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}
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SCM
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display_helper (FILE* f, SCM x, bool cont, char const *sep, bool quote)
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{
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SCM r;
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fprintf (f, "%s", sep);
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switch (TYPE (x))
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{
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case CHAR:
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{
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char const *name = 0;
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if (VALUE (x) == char_nul.value) name = char_nul.name;
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else if (VALUE (x) == char_backspace.value) name = char_backspace.name;
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else if (VALUE (x) == char_tab.value) name = char_tab.name;
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else if (VALUE (x) == char_newline.value) name = char_newline.name;
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else if (VALUE (x) == char_vt.value) name = char_vt.name;
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else if (VALUE (x) == char_page.value) name = char_page.name;
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else if (VALUE (x) == char_return.value) name = char_return.name;
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else if (VALUE (x) == char_space.value) name = char_space.name;
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if (name) fprintf (f, "#\\%s", name);
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else fprintf (f, "#\\%c", VALUE (x));
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break;
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}
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case MACRO:
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fprintf (f, "(*macro* ");
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display_helper (f, g_cells[x].macro, cont, sep, quote);
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fprintf (f, ")");
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break;
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case NUMBER: fprintf (f, "%d", VALUE (x)); break;
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case PAIR:
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{
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if (car (x) == cell_circular) {
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fprintf (f, "(*circ* . #-1#)");
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return cell_unspecified;
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}
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if (car (x) == cell_closure) {
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fprintf (f, "(*closure* . #-1#)");
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return cell_unspecified;
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}
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if (car (x) == cell_symbol_quote) {
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fprintf (f, "'");
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return display_helper (f, car (cdr (x)), cont, "", true);
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}
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if (!cont) fprintf (f, "(");
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display_ (f, car (x));
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if (cdr (x) && TYPE (cdr (x)) == PAIR)
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display_helper (f, cdr (x), true, " ", false);
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else if (cdr (x) != cell_nil) {
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fprintf (f, " . ");
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display_ (f, cdr (x));
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}
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if (!cont) fprintf (f, ")");
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break;
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}
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case VECTOR:
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{
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fprintf (f, "#(");
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for (int i = 0; i < LENGTH (x); i++) {
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if (TYPE (VECTOR (x)+i) == VECTOR
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|| (TYPE (VECTOR (x)+i) == REF
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&& TYPE (REF (VECTOR (x)+i)) == VECTOR))
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fprintf (f, "%s#(...)", i ? " " : "");
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else
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display_helper (f,VECTOR (x)+i, false, i ? " " : "", false);
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}
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fprintf (f, ")");
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break;
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}
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case REF: display_helper (f, g_cells[x].ref, cont, "", true); break;
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case FUNCTION:
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{
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fprintf (f, "#<procedure ");
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SCM p = STRING (x);
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if (p < 0 || p >= g_free.value || TYPE (p) != PAIR)
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fprintf (f, "%s", NAME (x));
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else
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display_ (f, STRING (x));
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fprintf (f, ">");
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break;
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}
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case BROKEN_HEART: fprintf (f, "<3"); break;
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default:
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if (STRING (x))
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{
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SCM p = STRING (x);
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assert (p);
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while (p != cell_nil) {
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assert (TYPE (car (p)) == CHAR);
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fputc (VALUE (car (p)), f);
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p = cdr (p);
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}
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}
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else if (TYPE (x) != PAIR && NAME (x)) fprintf (f, "%s", NAME (x));
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}
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return cell_unspecified;
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}
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@ -55,6 +55,7 @@
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(mes-use-module (mes elf))
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(mes-use-module (mes libc-i386))))
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(gc)
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(define c-parser
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(lalr-parser
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9
posix.c
9
posix.c
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@ -35,6 +35,15 @@ string_to_cstring (SCM s)
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return buf;
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}
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SCM
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force_output (SCM p) ///((arity . n))
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{
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int fd = 1;
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if (TYPE (p) == PAIR && TYPE (car (p)) == NUMBER) fd = VALUE (car (p));
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FILE *f = fd == 1 ? stdout : stderr;
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fflush (f);
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}
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SCM
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open_input_file (SCM file_name)
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{
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287
reader.c
Normal file
287
reader.c
Normal file
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@ -0,0 +1,287 @@
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/* -*-comment-start: "//";comment-end:""-*-
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* Mes --- Maxwell Equations of Software
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* Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of Mes.
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*
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* Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
|
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* 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 Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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SCM
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peek_char ()
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{
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return make_char (peekchar ());
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}
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SCM
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read_char ()
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{
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return make_char (getchar ());
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}
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SCM
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unread_char (SCM c)
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{
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return ungetchar (VALUE (c));
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}
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SCM
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unget_char (SCM c)
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{
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assert (TYPE (c) == NUMBER || TYPE (c) == CHAR);
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ungetchar (VALUE (c));
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return c;
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}
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int
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read_line_comment (int c)
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{
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if (c == '\n') return c;
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return read_line_comment (getchar ());
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}
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int
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read_block_comment (int c)
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{
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if (c == '!' && peekchar () == '#') return getchar ();
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return read_block_comment (getchar ());
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}
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SCM lookup_char (int c, SCM a);
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SCM
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read_word (int c, SCM w, SCM a)
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{
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if (c == EOF && w == cell_nil) return cell_nil;
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if (c == '\n' && w == cell_nil) return read_word (getchar (), w, a);
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if (c == '\n' && VALUE (car (w)) == '.' && cdr (w) == cell_nil) return cell_dot;
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if (c == EOF || c == '\n') return lookup (w, a);
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if (c == ' ') return read_word ('\n', w, a);
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if (c == '"' && w == cell_nil) return read_string ();
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if (c == '"') {ungetchar (c); return lookup (w, a);}
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if (c == '(' && w == cell_nil) return read_list (a);
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if (c == '(') {ungetchar (c); return lookup (w, a);}
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if (c == ')' && w == cell_nil) {ungetchar (c); return cell_nil;}
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if (c == ')') {ungetchar (c); return lookup (w, a);}
|
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if (c == ',' && peekchar () == '@') {getchar (); return cons (lookup (STRING (cell_symbol_unquote_splicing), a),
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cons (read_word (getchar (), w, a),
|
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cell_nil));}
|
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if ((c == '\''
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|| c == '`'
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|| c == ',')
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&& w == cell_nil) {return cons (lookup_char (c, a),
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cons (read_word (getchar (), w, a),
|
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cell_nil));}
|
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if (c == '#' && peekchar () == ',' && w == cell_nil) {
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getchar ();
|
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if (peekchar () == '@'){getchar (); return cons (lookup (STRING (cell_symbol_unsyntax_splicing), a),
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cons (read_word (getchar (), w, a),
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cell_nil));}
|
||||
return cons (lookup (STRING (cell_symbol_unsyntax), a), cons (read_word (getchar (), w, a), cell_nil));
|
||||
}
|
||||
if (c == '#' && (peekchar () == '\'' || peekchar () == '`') && w == cell_nil) {
|
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c = getchar ();
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||||
return cons (lookup (cons (make_char ('#'), cons (make_char (c), cell_nil)), a),
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cons (read_word (getchar (), w, a), cell_nil));}
|
||||
if (c == ';') {read_line_comment (c); return read_word ('\n', w, a);}
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if (c == '#' && peekchar () == 'x') {getchar (); return read_hex ();}
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if (c == '#' && peekchar () == '\\') {getchar (); return read_character ();}
|
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if (c == '#' && w == cell_nil && peekchar () == '(') {getchar (); return list_to_vector (read_list (a));}
|
||||
if (c == '#' && peekchar () == '!') {getchar (); read_block_comment (getchar ()); return read_word (getchar (), w, a);}
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return read_word (getchar (), append2 (w, cons (make_char (c), cell_nil)), a);
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}
|
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|
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SCM
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read_character ()
|
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{
|
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int c = getchar ();
|
||||
if (c >= '0' && c <= '7'
|
||||
&& peekchar () >= '0' && peekchar () <= '7') {
|
||||
c = c - '0';
|
||||
while (peekchar () >= '0' && peekchar () <= '7') {
|
||||
c <<= 3;
|
||||
c += getchar () - '0';
|
||||
}
|
||||
}
|
||||
else if (c >= 'a' && c <= 'z'
|
||||
&& peekchar () >= 'a' && peekchar () <= 'z') {
|
||||
char buf[10];
|
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char *p = buf;
|
||||
*p++ = c;
|
||||
while (peekchar () >= 'a' && peekchar () <= 'z') {
|
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*p++ = getchar ();
|
||||
}
|
||||
*p = 0;
|
||||
if (!strcmp (buf, char_nul.name)) c = char_nul.value;
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||||
else if (!strcmp (buf, char_backspace.name)) c = char_backspace.value;
|
||||
else if (!strcmp (buf, char_tab.name)) c = char_tab.value;
|
||||
else if (!strcmp (buf, char_newline.name)) c = char_newline.value;
|
||||
else if (!strcmp (buf, char_vt.name)) c = char_vt.value;
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else if (!strcmp (buf, char_page.name)) c = char_page.value;
|
||||
else if (!strcmp (buf, char_return.name)) c = char_return.value;
|
||||
else if (!strcmp (buf, char_space.name)) c = char_space.value;
|
||||
else {
|
||||
fprintf (stderr, "char not supported: %s\n", buf);
|
||||
assert (!"char not supported");
|
||||
}
|
||||
}
|
||||
return make_char (c);
|
||||
}
|
||||
|
||||
SCM
|
||||
read_hex ()
|
||||
{
|
||||
int n = 0;
|
||||
int c = peekchar ();
|
||||
while ((c >= '0' && c <= '9')
|
||||
|| (c >= 'A' && c <= 'F')
|
||||
|| (c >= 'a' && c <= 'f')) {
|
||||
n <<= 4;
|
||||
if (c >= 'a') n += c - 'a' + 10;
|
||||
else if (c >= 'A') n += c - 'A' + 10;
|
||||
else n+= c - '0';
|
||||
getchar ();
|
||||
c = peekchar ();
|
||||
}
|
||||
return make_number (n);
|
||||
}
|
||||
|
||||
SCM
|
||||
append_char (SCM x, int i)
|
||||
{
|
||||
return append2 (x, cons (make_char (i), cell_nil));
|
||||
}
|
||||
|
||||
SCM
|
||||
read_string ()
|
||||
{
|
||||
SCM p = cell_nil;
|
||||
int c = getchar ();
|
||||
while (true) {
|
||||
if (c == '"') break;
|
||||
if (c == '\\' && peekchar () == '"') p = append_char (p, getchar ());
|
||||
else if (c == '\\' && peekchar () == 'n') {getchar (); p = append_char (p, '\n');}
|
||||
else if (c == EOF) assert (!"EOF in string");
|
||||
else p = append_char (p, c);
|
||||
c = getchar ();
|
||||
}
|
||||
return make_string (p);
|
||||
}
|
||||
|
||||
int
|
||||
eat_whitespace (int c)
|
||||
{
|
||||
while (c == ' ' || c == '\t' || c == '\n') c = getchar ();
|
||||
if (c == ';') return eat_whitespace (read_line_comment (c));
|
||||
if (c == '#' && peekchar () == '!') {getchar (); read_block_comment (getchar ()); return eat_whitespace (getchar ());}
|
||||
return c;
|
||||
}
|
||||
|
||||
SCM
|
||||
read_list (SCM a)
|
||||
{
|
||||
int c = getchar ();
|
||||
c = eat_whitespace (c);
|
||||
if (c == ')') return cell_nil;
|
||||
SCM w = read_word (c, cell_nil, a);
|
||||
if (w == cell_dot)
|
||||
return car (read_list (a));
|
||||
return cons (w, read_list (a));
|
||||
}
|
||||
|
||||
SCM
|
||||
read_env (SCM a)
|
||||
{
|
||||
return read_word (getchar (), cell_nil, a);
|
||||
}
|
||||
|
||||
SCM
|
||||
lookup (SCM s, SCM a)
|
||||
{
|
||||
if (isdigit (VALUE (car (s))) || (VALUE (car (s)) == '-' && cdr (s) != cell_nil)) {
|
||||
SCM p = s;
|
||||
int sign = 1;
|
||||
if (VALUE (car (s)) == '-') {
|
||||
sign = -1;
|
||||
p = cdr (s);
|
||||
}
|
||||
int n = 0;
|
||||
while (p != cell_nil && isdigit (VALUE (car (p)))) {
|
||||
n *= 10;
|
||||
n += VALUE (car (p)) - '0';
|
||||
p = cdr (p);
|
||||
}
|
||||
if (p == cell_nil) return make_number (n * sign);
|
||||
}
|
||||
|
||||
SCM x = internal_lookup_symbol (s);
|
||||
if (x) return x;
|
||||
|
||||
if (cdr (s) == cell_nil) {
|
||||
if (VALUE (car (s)) == '\'') return cell_symbol_quote;
|
||||
if (VALUE (car (s)) == '`') return cell_symbol_quasiquote;
|
||||
if (VALUE (car (s)) == ',') return cell_symbol_unquote;
|
||||
}
|
||||
else if (cddr (s) == cell_nil) {
|
||||
if (VALUE (car (s)) == ',' && VALUE (cadr (s)) == '@') return cell_symbol_unquote_splicing;
|
||||
if (VALUE (car (s)) == '#' && VALUE (cadr (s)) == '\'') return cell_symbol_syntax;
|
||||
if (VALUE (car (s)) == '#' && VALUE (cadr (s)) == '`') return cell_symbol_quasisyntax;
|
||||
if (VALUE (car (s)) == '#' && VALUE (cadr (s)) == ',') return cell_symbol_unsyntax;
|
||||
}
|
||||
else if (cdddr (s) == cell_nil) {
|
||||
if (VALUE (car (s)) == '#' && VALUE (cadr (s)) == ',' && VALUE (caddr (s)) == '@') return cell_symbol_unsyntax_splicing;
|
||||
if (VALUE (car (s)) == 'E' && VALUE (cadr (s)) == 'O' && VALUE (caddr (s)) == 'F') {
|
||||
fprintf (stderr, "mes: got EOF\n");
|
||||
return cell_nil; // `EOF': eval program, which may read stdin
|
||||
}
|
||||
}
|
||||
|
||||
return internal_make_symbol (s);
|
||||
}
|
||||
|
||||
SCM
|
||||
lookup_char (int c, SCM a)
|
||||
{
|
||||
return lookup (cons (make_char (c), cell_nil), a);
|
||||
}
|
||||
|
||||
SCM
|
||||
list_of_char_equal_p (SCM a, SCM b)
|
||||
{
|
||||
while (a != cell_nil && b != cell_nil && VALUE (car (a)) == VALUE (car (b))) {
|
||||
assert (TYPE (car (a)) == CHAR);
|
||||
assert (TYPE (car (b)) == CHAR);
|
||||
a = cdr (a);
|
||||
b = cdr (b);
|
||||
}
|
||||
return (a == cell_nil && b == cell_nil) ? cell_t : cell_f;
|
||||
}
|
||||
|
||||
SCM
|
||||
internal_lookup_symbol (SCM s)
|
||||
{
|
||||
SCM x = symbols;
|
||||
while (x) {
|
||||
// .string and .name is the same field; .name is used as a handy
|
||||
// static field initializer. A string can only be mistaken for a
|
||||
// cell with type == PAIR for the one character long, zero-padded
|
||||
// #\etx.
|
||||
SCM p = STRING (car (x));
|
||||
if (p < 0 || p >= g_free.value || TYPE (p) != PAIR)
|
||||
STRING (car (x)) = cstring_to_list (NAME (car (x)));
|
||||
if (list_of_char_equal_p (STRING (car (x)), s) == cell_t) break;
|
||||
x = cdr (x);
|
||||
}
|
||||
if (x) x = car (x);
|
||||
return x;
|
||||
}
|
||||
|
|
@ -75,7 +75,7 @@ exit $?
|
|||
(define local-answer 41))
|
||||
(pass-if-equal "begin 2" 41 (begin local-answer))
|
||||
|
||||
;; (if (not guile?)
|
||||
;; (pass-if-equal "load" 42 (begin (load "tests/data/load.scm") the-answer)))
|
||||
(if (not guile?)
|
||||
(pass-if-equal "load" 42 (begin (load "tests/data/load.scm") the-answer)))
|
||||
|
||||
(result 'report)
|
||||
|
|
|
|||
Loading…
Reference in a new issue