6af7556d51
* libc/include/assert.h (assert_fail): * libc/include/stdio.h: +int eputs (char const* s); +int fputs (char const* s); +int puts (char const* s); +int putchar (int c); +int fputc (int c, int fd); +int getchar (); * libc/include/stdlib.h: +char* getenv (char const* s) +int atoi (char const *s); +int *malloc (size_t); +int *realloc (int *p, int size); * libc/include/unistd.h (access): * src/lib.c (display_helper): * src/mes.c (read_input_file_env): * src/posix.c: Include unistd.h.
145 lines
3.2 KiB
C
145 lines
3.2 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* Mes --- Maxwell Equations of Software
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* Copyright © 2016,2017 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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#if !__MESC__
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#define fputs fdputs
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#endif
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int g_depth;
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SCM fdisplay_ (SCM, int);
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SCM display_helper (SCM x, int cont, char* sep, int fd);
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SCM
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display_helper (SCM x, int cont, char* sep, int fd)
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{
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fputs (sep, fd);
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if (g_depth == 0) return cell_unspecified;
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g_depth = g_depth - 1;
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switch (TYPE (x))
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{
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case TCHAR:
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{
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fputs ("#\\", fd);
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fputc (VALUE (x), fd);
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break;
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}
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case TFUNCTION:
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{
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fputs ("#<procedure ", fd);
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char const *p = "?";
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if (FUNCTION (x).name != 0)
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p = FUNCTION (x).name;
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fputs (p, fd);
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fputs ("[", fd);
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fputs (itoa (CDR (x)), fd);
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fputs (",", fd);
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fputs (itoa (x), fd);
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fputs ("]>", fd);
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break;
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}
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case TMACRO:
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{
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fputs ("#<macro ", fd);
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display_helper (cdr (x), cont, "", fd);
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fputs (">", fd);
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break;
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}
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case TNUMBER:
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{
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fputs (itoa (VALUE (x)), fd);
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break;
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}
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case TPAIR:
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{
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if (!cont) fputs ("(", fd);
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if (x && x != cell_nil) fdisplay_ (CAR (x), fd);
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if (CDR (x) && TYPE (CDR (x)) == TPAIR)
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display_helper (CDR (x), 1, " ", fd);
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else if (CDR (x) && CDR (x) != cell_nil)
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{
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if (TYPE (CDR (x)) != TPAIR)
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fputs (" . ", fd);
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fdisplay_ (CDR (x), fd);
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}
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if (!cont) fputs (")", fd);
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break;
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}
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case TSPECIAL:
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case TSTRING:
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case TSYMBOL:
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{
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SCM t = CAR (x);
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while (t && t != cell_nil)
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{
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fputc (VALUE (CAR (t)), fd);
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t = CDR (t);
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}
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break;
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}
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default:
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{
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fputs ("<", fd);
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fputs (itoa (TYPE (x)), fd);
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fputs (":", fd);
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fputs (itoa (x), fd);
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fputs (">", fd);
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break;
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}
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}
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return 0;
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}
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SCM
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display_ (SCM x)
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{
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g_depth = 5;
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return display_helper (x, 0, "", STDOUT);
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}
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SCM
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display_error_ (SCM x)
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{
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g_depth = 5;
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return display_helper (x, 0, "", STDERR);
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}
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SCM
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fdisplay_ (SCM x, int fd) ///((internal))
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{
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g_depth = 5;
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return display_helper (x, 0, "", fd);
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}
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SCM
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exit_ (SCM x) ///((name . "exit"))
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{
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assert (TYPE (x) == TNUMBER);
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exit (VALUE (x));
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}
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SCM
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xassq (SCM x, SCM a) ///for speed in core only
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{
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while (a != cell_nil && x != CDAR (a)) a = CDR (a);
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return a != cell_nil ? CAR (a) : cell_f;
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}
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