core: Display me debuggor.
Having display in the core is handy for debugging. This is a courtesy commit intended to prevent bitrot. * GNUmakefile (mes.o): Depend on display. * mes.c: Include display. * display.c: New file.
This commit is contained in:
Jan Nieuwenhuizen
parent
9dcbdf2135
commit
6014e56f68
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@ -29,6 +29,7 @@ all: mes module/mes/read-0.mo
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mes.o: GNUmakefile
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mes.o: GNUmakefile
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mes.o: mes.c
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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: mes.c mes.h mes.i mes.environment.i mes.symbols.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: 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: 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: posix.c posix.h posix.i posix.environment.i
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177
display.c
Normal file
177
display.c
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@ -0,0 +1,177 @@
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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 char_eof = {CHAR, .name="*eof*", .value=-1};
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scm char_nul = {CHAR, .name="nul", .value=0};
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scm char_alarm = {CHAR, .name="alarm", .value=8};
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scm char_backspace = {CHAR, .name="backspace", .value=8};
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scm char_tab = {CHAR, .name="tab", .value=9};
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scm char_newline = {CHAR, .name="newline", .value=10};
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scm char_vtab = {CHAR, .name="vtab", .value=11};
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scm char_page = {CHAR, .name="page", .value=12};
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scm char_return = {CHAR, .name="return", .value=13};
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scm char_space = {CHAR, .name="space", .value=32};
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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_alarm.value) name = char_alarm.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_vtab.value) name = char_vtab.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 CLOSURE:
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{
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fprintf (f, "#<procedure #f ");
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display_ (f, (cadr (CLOSURE (x))));
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fprintf (f, ">");
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return cell_unspecified;
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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 && TYPE (cdr (x)) != PAIR) {
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fprintf (f, "'");
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x = cdr (x);
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if (TYPE (x) != FUNCTION)
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x = car (x);
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return display_helper (f, x, cont, "", true);
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}
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if (!cont) fprintf (f, "(");
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if (x && x!= cell_nil) 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) && 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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switch (FUNCTION (x).arity)
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{
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case -1: fprintf (f, "(. x)"); break;
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case 0: fprintf (f, "()"); break;
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case 1: fprintf (f, "(x)"); break;
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case 2: fprintf (f, "(x y)"); break;
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case 3: fprintf (f, "(x y z)"); break;
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}
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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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case KEYWORD:
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fprintf (f, "#:");
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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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4
mes.c
4
mes.c
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@ -132,6 +132,7 @@ SCM r1 = 0; // param 1
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SCM r2 = 0; // param 2
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SCM r2 = 0; // param 2
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SCM r3 = 0; // param 3
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SCM r3 = 0; // param 3
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#include "display.h"
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#include "lib.h"
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#include "lib.h"
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#include "math.h"
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#include "math.h"
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#include "mes.h"
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#include "mes.h"
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@ -967,11 +968,13 @@ mes_builtins (SCM a)
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{
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{
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#include "mes.i"
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#include "mes.i"
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#include "display.i"
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#include "lib.i"
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#include "lib.i"
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#include "math.i"
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#include "math.i"
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#include "posix.i"
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#include "posix.i"
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#include "reader.i"
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#include "reader.i"
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#include "display.environment.i"
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#include "lib.environment.i"
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#include "lib.environment.i"
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#include "math.environment.i"
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#include "math.environment.i"
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#include "mes.environment.i"
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#include "mes.environment.i"
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@ -1015,6 +1018,7 @@ lookup_macro (SCM x, SCM a)
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}
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}
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FILE *g_stdin;
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FILE *g_stdin;
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#include "display.c"
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#include "lib.c"
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#include "lib.c"
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#include "math.c"
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#include "math.c"
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#include "posix.c"
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#include "posix.c"
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