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authorJim Blandy <jimb@red-bean.com>1997-04-14 06:42:27 +0000
committerJim Blandy <jimb@red-bean.com>1997-04-14 06:42:27 +0000
commitee2a8b9bdd1d548e5530f4f132aa436167154a00 (patch)
tree752b54578b9f14e466cc3e8c712e47b4bf4a9c78 /libguile/gh_eval.c
parentf4d7dfb69da543557bfca4b63e992868e0e37110 (diff)
downloadguile-ee2a8b9bdd1d548e5530f4f132aa436167154a00.tar.gz
* gh_init.c (gh_standard_handler): Return SCM_BOOL_F, not garbage.
Merge GH interface library into libguile. * gh.h, gh_data.c, gh_eval.c, gh_funcs.c, gh_init.c, gh_io.c, gh_list.c, gh_predicates.c, gh_test_c, gh_test_c.c, gh_test_repl, gh_test_repl.c: New files. * Makefile.am (libguile_la_SOURCES): Add gh_data.c, gh_eval.c, gh_funcs.c, gh_init.c, gh_io.c, gh_list.c, gh_predicates.c. Move _scm.h to ... (EXTRA_libguile_la_SOURCES): ... here. (pkginclude_HEADERS): Add variable, to get gh.h installed. (THREAD_LIBS, check_ldadd, check_PROGRAMS, gh_test_c_SOURCES, gh_test_c_LDADD, gh_test_repl_SOURCES, gh_test_repl_LDADD): New variables, describing how to build the gh test programs. * configure.in: Check for -lm, -lsocket, -lnsl; we need this to build the test programs, and we probably should have been linking libguile.la against them all along, to support AIX shared libs. Add cflags for threads to CFLAGS; add libs for threads to new variable THREAD_LIBS, used in Makefile.am. * ChangeLog-gh: log from old `gh' subdirectory. * Makefile.in, configure, scmconfig.h.in: Rebuilt.
Diffstat (limited to 'libguile/gh_eval.c')
-rw-r--r--libguile/gh_eval.c180
1 files changed, 180 insertions, 0 deletions
diff --git a/libguile/gh_eval.c b/libguile/gh_eval.c
new file mode 100644
index 000000000..bad70ed13
--- /dev/null
+++ b/libguile/gh_eval.c
@@ -0,0 +1,180 @@
+/* Copyright (C) 1995,1996,1997 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.
+ */
+
+
+/* routines to evaluate Scheme code */
+
+#include <stdio.h>
+
+#include <gh.h>
+
+typedef SCM (*gh_eval_t) (void *data, SCM jmpbuf);
+
+struct cwss_data
+ {
+ SCM tag;
+ scm_catch_body_t body;
+ void *data;
+ };
+
+/* Evaluate the string; toss the value. */
+#if 0
+void
+gh_eval_str (char *scheme_code)
+{
+ /* Create a port that reads characters from SCHEME_CODE. */
+ SCM port = scm_mkstrport (SCM_MAKINUM (0),
+ scm_makfrom0str (scheme_code),
+ SCM_OPN | SCM_RDNG,
+ "guile_main");
+ SCM form;
+
+ /* Read expressions from that port; ignore the values. */
+ while ((form = scm_read (port, SCM_BOOL_F, SCM_BOOL_F)) != SCM_EOF_VAL)
+ scm_eval_x (form);
+
+ /* Dispose of the port when done. (Oh icky.) */
+ scm_close_port (port);
+}
+#endif /* 0 */
+
+SCM
+gh_eval_str (char *scheme_code)
+{
+ return scm_eval_0str (scheme_code);
+}
+
+/* evaluate the file by passing it to the lower level scm_primitive_load() */
+SCM
+gh_eval_file (char *fname)
+{
+ return scm_primitive_load (gh_str02scm (fname));
+}
+
+static SCM
+eval_str_wrapper (void *data, SCM jmpbuf)
+{
+/* gh_eval_t real_eval_proc = (gh_eval_t) (* ((gh_eval_t *) data)); */
+
+ char *scheme_code = (char *) data;
+ return gh_eval_str (scheme_code);
+}
+
+SCM
+gh_eval_str_with_catch (char *scheme_code, scm_catch_handler_t handler)
+{
+ /* FIXME: not there yet */
+ return gh_catch (SCM_BOOL_T, (scm_catch_body_t) eval_str_wrapper, scheme_code,
+ (scm_catch_handler_t) gh_standard_handler, scheme_code);
+}
+
+SCM
+gh_eval_str_with_standard_handler (char *scheme_code)
+{
+ return gh_eval_str_with_catch (scheme_code, gh_standard_handler);
+}
+
+
+SCM
+ss_handler (void *data, SCM tag, SCM throw_args)
+{
+ /* Save the stack */
+ SCM_SETCDR (scm_the_last_stack_var,
+ scm_make_stack (scm_cons (SCM_BOOL_T, SCM_EOL)));
+ /* Throw the error */
+ return scm_throw (tag, throw_args);
+}
+
+static SCM
+cwss_body (void *data, SCM jmpbuf)
+{
+ struct cwss_data *d = data;
+ return scm_internal_lazy_catch (d->tag, d->body, d->data, ss_handler, NULL);
+}
+/* FIXME: should catch_with_saved_stack() be in the gh_ API? */
+static SCM
+catch_with_saved_stack (SCM tag,
+ scm_catch_body_t body,
+ void *body_data,
+ scm_catch_handler_t handler,
+ void *handler_data)
+{
+ struct cwss_data d;
+ d.tag = tag;
+ d.body = body;
+ d.data = body_data;
+ return scm_internal_catch (tag, cwss_body, &d, handler, handler_data);
+}
+
+SCM
+gh_eval_str_with_stack_saving_handler (char *scheme_code)
+{
+ return catch_with_saved_stack (SCM_BOOL_T,
+ (scm_catch_body_t) eval_str_wrapper,
+ scheme_code,
+ (scm_catch_handler_t)
+ gh_standard_handler,
+ scheme_code);
+}
+
+static SCM
+eval_file_wrapper (void *data, SCM jmpbuf)
+{
+/* gh_eval_t real_eval_proc = (gh_eval_t) (* ((gh_eval_t *) data)); */
+
+ char *scheme_code = (char *) data;
+ return gh_eval_file (scheme_code);
+}
+
+SCM
+gh_eval_file_with_catch (char *scheme_code, scm_catch_handler_t handler)
+{
+ /* FIXME: not there yet */
+ return gh_catch (SCM_BOOL_T, (scm_catch_body_t) eval_file_wrapper,
+ scheme_code, (scm_catch_handler_t) gh_standard_handler,
+ scheme_code);
+}
+
+SCM
+gh_eval_file_with_standard_handler (char *scheme_code)
+{
+ return gh_eval_file_with_catch (scheme_code, gh_standard_handler);
+}