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-rw-r--r--libguile/gscm.c657
1 files changed, 657 insertions, 0 deletions
diff --git a/libguile/gscm.c b/libguile/gscm.c
new file mode 100644
index 000000000..5eedc9755
--- /dev/null
+++ b/libguile/gscm.c
@@ -0,0 +1,657 @@
+/* Copyright (C) 1994, 1995, 1996 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, 675 Mass Ave, Cambridge, MA 02139, 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 <stdio.h>
+#include <sys/param.h>
+#include "gscm.h"
+#include "_scm.h"
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+
+
+extern char *getenv ();
+
+
+/* {Top Level Evaluation}
+ *
+ * Top level evaluation has to establish a dynamic root context,
+ * enable Scheme signal handlers, and catch global escapes (errors, quits,
+ * aborts, restarts, and execs) from the interpreter.
+ */
+
+
+/* {Printing Objects to Strings}
+ */
+
+#ifdef __STDC__
+static GSCM_status
+gscm_portprint_obj (SCM port, SCM obj)
+#else
+static GSCM_status
+gscm_portprint_obj (port, obj)
+ SCM port;
+ SCM obj;
+#endif
+{
+ scm_iprin1 (obj, port, 1);
+ return GSCM_OK;
+}
+
+
+struct seval_str_frame
+{
+ GSCM_status status;
+ SCM * answer;
+ GSCM_top_level top;
+ char * str;
+};
+
+#ifdef __STDC__
+static void
+_seval_str_fn (void * vframe)
+#else
+static void
+_seval_str_fn (vframe)
+ void * vframe;
+#endif
+{
+ struct seval_str_frame * frame;
+ frame = (struct seval_str_frame *)vframe;
+ frame->status = gscm_seval_str (frame->answer, frame->top, frame->str);
+}
+
+
+
+#ifdef __STDC__
+static GSCM_status
+gscm_strprint_obj (SCM * answer, SCM obj)
+#else
+static GSCM_status
+gscm_strprint_obj (answer, obj)
+ SCM * answer;
+ SCM obj;
+#endif
+{
+ SCM str;
+ SCM port;
+ GSCM_status stat;
+ str = scm_makstr (64, 0);
+ port = scm_mkstrport (SCM_MAKINUM (0), str, SCM_OPN | SCM_WRTNG, "gscm_strprint_obj");
+ stat = gscm_portprint_obj (port, obj);
+ if (stat == GSCM_OK)
+ *answer = str;
+ else
+ *answer = SCM_BOOL_F;
+ return stat;
+}
+
+#ifdef __STDC__
+static GSCM_status
+gscm_cstr (char ** answer, SCM obj)
+#else
+static GSCM_status
+gscm_cstr (answer, obj)
+ char ** answer;
+ SCM obj;
+#endif
+{
+ GSCM_status stat;
+
+ *answer = (char *)malloc (SCM_LENGTH (obj));
+ stat = GSCM_OK;
+ if (!*answer)
+ stat = GSCM_OUT_OF_MEM;
+ else
+ memcpy (*answer, SCM_CHARS (obj), SCM_LENGTH (obj));
+ return stat;
+}
+
+
+/* {Invoking The Interpreter}
+ */
+
+#ifdef __STDC__
+static SCM
+gscm_silent_repl (SCM env)
+#else
+static SCM
+gscm_silent_repl (env)
+ SCM env;
+#endif
+{
+ SCM source;
+ SCM answer;
+ answer = SCM_UNSPECIFIED;
+ while ((source = scm_read (SCM_UNDEFINED, SCM_UNDEFINED, SCM_UNDEFINED)) != SCM_EOF_VAL)
+ answer = scm_eval_x (source);
+ return answer;
+}
+
+
+#ifdef _UNICOS
+typedef int setjmp_type;
+#else
+typedef long setjmp_type;
+#endif
+
+#ifdef __STDC__
+static GSCM_status
+_eval_port (SCM * answer, GSCM_top_level toplvl, SCM port, int printp)
+#else
+static GSCM_status
+_eval_port (answer, toplvl, port, printp)
+ SCM * answer;
+ GSCM_top_level toplvl;
+ SCM port;
+ int printp;
+#endif
+{
+ SCM saved_inp;
+ GSCM_status status;
+ setjmp_type i;
+ static int deja_vu = 0;
+ SCM ignored;
+
+ if (deja_vu)
+ return GSCM_ILLEGALLY_REENTERED;
+
+ ++deja_vu;
+ /* Take over signal handlers for all the interesting signals.
+ */
+ scm_init_signals ();
+
+
+ /* Default return values:
+ */
+ if (!answer)
+ answer = &ignored;
+ status = GSCM_OK;
+ *answer = SCM_BOOL_F;
+
+ /* Perform evalutation under a new dynamic root.
+ *
+ */
+ SCM_BASE (scm_rootcont) = (SCM_STACKITEM *) & i;
+#ifdef DEBUG_EXTENSIONS
+ SCM_DFRAME (scm_rootcont) = last_debug_info_frame = 0;
+#endif
+ saved_inp = scm_cur_inp;
+ i = setjmp (SCM_JMPBUF (scm_rootcont));
+#ifdef SCM_STACK_CHECK
+ scm_check_stack_p = 1;
+#endif
+ if (!i)
+ {
+ scm_gc_heap_lock = 0;
+ scm_ints_disabled = 0;
+ /* need to close loading files here. */
+ scm_cur_inp = port;
+ {
+ SCM top_env;
+ top_env = SCM_EOL;
+ *answer = gscm_silent_repl (top_env);
+ }
+ scm_cur_inp = saved_inp;
+ if (printp)
+ status = gscm_strprint_obj (answer, *answer);
+ }
+ else
+ {
+ scm_cur_inp = saved_inp;
+ *answer = scm_exitval;
+ if (printp)
+ gscm_strprint_obj (answer, *answer);
+ status = GSCM_ERROR;
+ }
+
+ scm_gc_heap_lock = 1;
+ scm_ints_disabled = 1;
+ scm_restore_signals ();
+ --deja_vu;
+ return status;
+}
+
+#ifdef __STDC__
+static GSCM_status
+seval_str (SCM *answer, GSCM_top_level toplvl, char * str)
+#else
+static GSCM_status
+seval_str (answer, toplvl, str)
+ SCM *answer;
+ GSCM_top_level toplvl;
+ char * str;
+#endif
+{
+ SCM scheme_str;
+ SCM port;
+ GSCM_status status;
+
+ scheme_str = scm_makfromstr (str, strlen (str), 0);
+ port = scm_mkstrport (SCM_MAKINUM (0), scheme_str, SCM_OPN | SCM_RDNG, "gscm_seval_str");
+ status = _eval_port (answer, toplvl, port, 0);
+ return status;
+}
+
+
+#ifdef __STDC__
+GSCM_status
+gscm_seval_str (SCM *answer, GSCM_top_level toplvl, char * str)
+#else
+GSCM_status
+gscm_seval_str (answer, toplvl, str)
+ SCM *answer;
+ GSCM_top_level toplvl;
+ char * str;
+#endif
+{
+ SCM_STACKITEM i;
+ GSCM_status status;
+ scm_stack_base = &i;
+ status = seval_str (answer, toplvl, str);
+ scm_stack_base = 0;
+ return status;
+}
+
+#ifdef __STDC__
+void
+format_load_command (char * buf, char *file_name)
+#else
+void
+format_load_command (buf, file_name)
+ char * buf;
+ char *file_name;
+#endif
+{
+ char quoted_name[MAXPATHLEN + 1];
+ int source;
+ int dest;
+
+ for (source = dest = 0; file_name[source]; ++source)
+ {
+ if (file_name[source] == '"')
+ quoted_name[dest++] = '\\';
+ quoted_name[dest++] = file_name[source];
+ }
+ quoted_name[dest] = 0;
+ sprintf (buf, "(%%try-load \"%s\")", quoted_name);
+}
+
+#ifdef __STDC__
+GSCM_status
+gscm_seval_file (SCM *answer, GSCM_top_level toplvl, char * file_name)
+#else
+GSCM_status
+gscm_seval_file (answer, toplvl, file_name)
+ SCM *answer;
+ GSCM_top_level toplvl;
+ char * file_name;
+#endif
+{
+ char command[MAXPATHLEN * 3];
+ format_load_command (command, file_name);
+ return gscm_seval_str (answer, toplvl, command);
+}
+
+
+#ifdef __STDC__
+static GSCM_status
+eval_str (char ** answer, GSCM_top_level toplvl, char * str)
+#else
+static GSCM_status
+eval_str (answer, toplvl, str)
+ char ** answer;
+ GSCM_top_level toplvl;
+ char * str;
+#endif
+{
+ SCM sanswer;
+ SCM scheme_str;
+ SCM port;
+ GSCM_status status;
+
+ scheme_str = scm_makfromstr (str, strlen (str), 0);
+ port = scm_mkstrport (SCM_MAKINUM(0), scheme_str, SCM_OPN | SCM_RDNG, "gscm_eval_str");
+ status = _eval_port (&sanswer, toplvl, port, 1);
+ if (answer)
+ {
+ if (status == GSCM_OK)
+ status = gscm_cstr (answer, sanswer);
+ else
+ *answer = 0;
+ }
+ return status;
+}
+
+
+#ifdef __STDC__
+GSCM_status
+gscm_eval_str (char ** answer, GSCM_top_level toplvl, char * str)
+#else
+GSCM_status
+gscm_eval_str (answer, toplvl, str)
+ char ** answer;
+ GSCM_top_level toplvl;
+ char * str;
+#endif
+{
+ SCM_STACKITEM i;
+ GSCM_status status;
+ scm_stack_base = &i;
+ status = eval_str (answer, toplvl, str);
+ scm_stack_base = 0;
+ return status;
+}
+
+
+#ifdef __STDC__
+GSCM_status
+gscm_eval_file (char ** answer, GSCM_top_level toplvl, char * file_name)
+#else
+GSCM_status
+gscm_eval_file (answer, toplvl, file_name)
+ char ** answer;
+ GSCM_top_level toplvl;
+ char * file_name;
+#endif
+{
+ char command[MAXPATHLEN * 3];
+ format_load_command (command, file_name);
+ return gscm_eval_str (answer, toplvl, command);
+}
+
+
+
+
+/* {Error Messages}
+ */
+
+
+#ifdef __GNUC__
+# define AT(X) [X] =
+#else
+# define AT(X)
+#endif
+
+static char * gscm_error_msgs[] =
+{
+ AT(GSCM_OK) "No error.",
+ AT(GSCM_ERROR) "ERROR in init file.",
+ AT(GSCM_ILLEGALLY_REENTERED) "Gscm function was illegally reentered.",
+ AT(GSCM_OUT_OF_MEM) "Out of memory.",
+ AT(GSCM_ERROR_OPENING_FILE) "Error opening file.",
+ AT(GSCM_ERROR_OPENING_INIT_FILE) "Error opening init file."
+};
+
+#ifdef __STDC__
+char *
+gscm_error_msg (int n)
+#else
+char *
+gscm_error_msg (n)
+ int n;
+#endif
+{
+ if ((n < 0) || (n > (sizeof (gscm_error_msgs) / sizeof (char *))))
+ return "Unrecognized error.";
+ else
+ return gscm_error_msgs[n];
+}
+
+
+
+/* {Defining New Procedures}
+ */
+
+#ifdef __STDC__
+SCM
+gscm_make_subr (SCM (*fn)(), int req, int opt, int varp, char * doc)
+#else
+SCM
+gscm_make_subr (fn, req, opt, varp, doc)
+ SCM (*fn)();
+ int req;
+ int opt;
+ int varp;
+ char * doc;
+#endif
+{
+ return scm_make_gsubr ("*anonymous*", req, opt, varp, fn);
+}
+
+#ifdef __STDC__
+int
+gscm_2_char (SCM c)
+#else
+int
+gscm_2_char (c)
+ SCM c;
+#endif
+{
+ SCM_ASSERT (SCM_ICHRP (c), c, SCM_ARG1, "gscm_2_char");
+ return SCM_ICHR (c);
+}
+
+
+
+#ifdef __STDC__
+void
+gscm_2_str (char ** out, int * len_out, SCM * objp)
+#else
+void
+gscm_2_str (out, len_out, objp)
+ char ** out;
+ int * len_out;
+ SCM * objp;
+#endif
+{
+ SCM_ASSERT (SCM_NIMP (*objp) && SCM_STRINGP (*objp), *objp, SCM_ARG3, "gscm_2_str");
+ if (out)
+ *out = SCM_CHARS (*objp);
+ if (len_out)
+ *len_out = SCM_LENGTH (*objp);
+}
+
+
+#ifdef __STDC__
+void
+gscm_error (char * message, SCM args)
+#else
+void
+gscm_error (message, args)
+ char * message;
+ SCM args;
+#endif
+{
+ SCM errsym;
+ SCM str;
+
+ errsym = SCM_CAR (scm_intern ("error", 5));
+ str = scm_makfrom0str (message);
+ scm_throw (errsym, scm_cons (str, args));
+}
+
+
+#ifdef __STDC__
+GSCM_status
+gscm_run_scm (int argc, char ** argv, FILE * in, FILE * out, FILE * err, GSCM_status (*initfn)(), char * initfile, char * initcmd)
+#else
+GSCM_status
+gscm_run_scm (argc, argv, in, out, err, initfn, initfile, initcmd)
+ int argc;
+ char ** argv;
+ FILE * in;
+ FILE * out;
+ FILE * err;
+ GSCM_status (*initfn)();
+ char * initfile;
+ char * initcmd;
+#endif
+{
+ SCM_STACKITEM i;
+ GSCM_status status;
+ GSCM_top_level top;
+
+ scm_ports_prehistory ();
+ scm_smob_prehistory ();
+ scm_tables_prehistory ();
+ scm_init_storage (0);
+ scm_start_stack (&i, in, out, err);
+ scm_init_gsubr ();
+ scm_init_curry ();
+ scm_init_feature ();
+/* scm_init_debug (); */
+ scm_init_alist ();
+ scm_init_append ();
+ scm_init_arbiters ();
+ scm_init_async ();
+ scm_init_boolean ();
+ scm_init_chars ();
+ scm_init_continuations ();
+ scm_init_dynwind ();
+ scm_init_eq ();
+ scm_init_error ();
+ scm_init_fports ();
+ scm_init_files ();
+ scm_init_gc ();
+ scm_init_hash ();
+ scm_init_hashtab ();
+ scm_init_kw ();
+ scm_init_list ();
+ scm_init_lvectors ();
+ scm_init_numbers ();
+ scm_init_pairs ();
+ scm_init_ports ();
+ scm_init_procs ();
+ scm_init_procprop ();
+ scm_init_scmsigs ();
+ scm_init_stackchk ();
+ scm_init_strports ();
+ scm_init_struct ();
+ scm_init_symbols ();
+ scm_init_load ();
+ scm_init_print ();
+ scm_init_read ();
+ scm_init_sequences ();
+ scm_init_stime ();
+ scm_init_strings ();
+ scm_init_strorder ();
+ scm_init_mbstrings ();
+ scm_init_strop ();
+ scm_init_throw ();
+ scm_init_variable ();
+ scm_init_vectors ();
+ scm_init_weaks ();
+ scm_init_vports ();
+ scm_init_eval ();
+ scm_init_ramap ();
+ scm_init_unif ();
+ scm_init_simpos ();
+ scm_init_elisp ();
+ scm_init_mallocs ();
+ scm_init_cnsvobj ();
+ scm_init_guile ();
+ initfn ();
+
+ /* Save the argument list to be the return value of (program-arguments).
+ */
+ scm_progargs = scm_makfromstrs (argc, argv);
+
+ scm_gc_heap_lock = 0;
+ errno = 0;
+ scm_ints_disabled = 1;
+
+/* init_basic (); */
+
+/* init_init(); */
+
+ if (initfile == NULL)
+ {
+ initfile = getenv ("GUILE_INIT_PATH");
+ if (initfile == NULL)
+ initfile = SCM_IMPLINIT;
+ }
+
+ if (initfile == NULL)
+ {
+ status = GSCM_OK;
+ }
+ else
+ {
+ SCM answer;
+
+ status = gscm_seval_file (&answer, -1, initfile);
+ if ((status == GSCM_OK) && (answer == SCM_BOOL_F))
+ status = GSCM_ERROR_OPENING_INIT_FILE;
+ }
+
+ top = SCM_EOL;
+
+ if (status == GSCM_OK)
+ {
+ scm_sysintern ("*stdin*", scm_cur_inp);
+ status = gscm_seval_str (0, top, initcmd);
+ }
+ return status;
+}
+
+
+
+#ifdef __STDC__
+void
+scm_init_guile (void)
+#else
+void
+scm_init_guile ()
+#endif
+{
+#include "gscm.x"
+}
+