aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/gnu/eval.c
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/gnu/eval.c')
-rw-r--r--sysdeps/gnu/eval.c138
1 files changed, 0 insertions, 138 deletions
diff --git a/sysdeps/gnu/eval.c b/sysdeps/gnu/eval.c
deleted file mode 100644
index e283b023ed..0000000000
--- a/sysdeps/gnu/eval.c
+++ /dev/null
@@ -1,138 +0,0 @@
-/* You don't really want to know what this hack is for.
- Copyright (C) 1996, 1997 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#include <stdio.h>
-#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <dlfcn.h>
-
-static void *funcall (char **stringp);
-static void *eval (char **stringp);
-
-static void *
-funcall (char **stringp)
-{
- void *args[strlen (*stringp)], **ap = args;
- void *argcookie = &args[1];
-
- do
- {
- /* Evaluate the next token. */
- *ap++ = eval (stringp);
-
- /* Whitespace is irrelevant. */
- while (isspace (**stringp))
- ++*stringp;
-
- /* Terminate at closing paren or end of line. */
- } while (**stringp != '\0' && **stringp != ')');
- if (**stringp != '\0')
- /* Swallow closing paren. */
- ++*stringp;
-
- if (args[0] == NULL)
- {
- static const char unknown[] = "Unknown function\n";
- write (1, unknown, sizeof unknown - 1);
- return NULL;
- }
-
- /* Do it to it. */
- __builtin_return (__builtin_apply (args[0],
- &argcookie,
- (char *) ap - (char *) &args[1]));
-}
-
-static void *
-eval (char **stringp)
-{
- void *value;
- char *p = *stringp, c;
-
- /* Whitespace is irrelevant. */
- while (isspace (*p))
- ++p;
-
- switch (*p)
- {
- case '"':
- /* String constant. */
- value = ++p;
- do
- if (*p == '\\')
- {
- switch (*strcpy (p, p + 1))
- {
- case 't':
- *p = '\t';
- break;
- case 'n':
- *p = '\n';
- break;
- }
- ++p;
- }
- while (*p != '\0' && *p++ != '"');
- if (p[-1] == '"')
- p[-1] = '\0';
- break;
-
- case '(':
- *stringp = ++p;
- return funcall (stringp);
-
- default:
- /* Try to parse it as a number. */
- value = (void *) strtol (p, stringp, 0);
- if (*stringp != p)
- return value;
-
- /* Anything else is a symbol that produces its address. */
- value = p;
- do
- ++p;
- while (*p != '\0' && !isspace (*p) && (!ispunct (*p) || *p == '_'));
- c = *p;
- *p = '\0';
- value = dlsym (NULL, value);
- *p = c;
- break;
- }
-
- *stringp = p;
- return value;
-}
-
-
-void
-_start (void)
-{
- char *buf = NULL;
- size_t bufsz = 0;
-
- while (__getdelim (&buf, &bufsz, '\n', stdin) > 0)
- {
- char *p = buf;
- eval (&p);
- }
-
- exit (0);
-}