+/*
+ parse-scm --
+
+ source file of the GNU LilyPond music typesetter
+
+ (c) 2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+*/
+
+
#include <stdio.h>
#include "ly-module.hh"
Thanks to Gary Houston <ghouston@freewire.co.uk> */
SCM
-internal_ly_parse_scm (Parse_start * ps, bool safe)
+internal_ly_parse_scm (Parse_start * ps)
{
- Source_file* sf =ps->start_location_.source_file_;
+ Source_file *sf =ps->start_location_.source_file_;
SCM port = sf->get_port ();
- int off = ps->start_location_.defined_str0_ - sf->to_str0();
+ int off = ps->start_location_.defined_str0_ - sf->to_str0 ();
scm_seek (port, scm_long2num (off), scm_long2num (SEEK_SET));
SCM from = scm_ftell (port);
SCM form;
SCM answer = SCM_UNSPECIFIED;
- /* Read expression from port */
+ /* Read expression from port. */
if (!SCM_EOF_OBJECT_P (form = scm_read (port)))
{
- if (safe)
- {
- static SCM safe_module;
- if (!safe_module)
- {
- safe_module = scm_primitive_eval (ly_symbol2scm ("safe-module"));
- ly_import_module (safe_module, scm_c_resolve_module ("lily"));
- }
- answer = scm_eval (form, safe_module);
- }
+ SCM function = ly_scheme_function ("make-safe-lilypond-module");
+ if (ps->safe_)
+ answer = scm_eval (form, function);
else
answer = scm_primitive_eval (form);
}
catch_protected_parse_body (void *p)
{
Parse_start *ps = (Parse_start*) p;
- return internal_ly_parse_scm (ps, false);
-}
-
-SCM
-safe_catch_protected_parse_body (void *p)
-{
- Parse_start *ps = (Parse_start*) p;
- return internal_ly_parse_scm (ps, true);
+
+ return internal_ly_parse_scm (ps);
}
SCM
-parse_handler (void * data, SCM tag, SCM args)
+parse_handler (void *data, SCM tag, SCM args)
{
- Parse_start* ps = (Parse_start*) data;
- (void) tag; // prevent warning
+ Parse_start* ps = (Parse_start *) data;
+ (void) tag;
ps->start_location_.error (_("GUILE signaled an error for the expression beginning here"));
#endif
SCM
-protected_ly_parse_scm (Parse_start *ps, bool safe)
+protected_ly_parse_scm (Parse_start *ps)
{
return scm_internal_catch (ly_symbol2scm (READ_ERROR),
- (safe ? &safe_catch_protected_parse_body
- : catch_protected_parse_body),
+ &catch_protected_parse_body,
(void*) ps,
&parse_handler, (void*) ps);
}
bool parse_protect_global = true;
-/* Try parsing. Upon failure return SCM_UNDEFINED. */
+/* Try parsing. Upon failure return SCM_UNDEFINED.
+ FIXME: shouldn't we return SCM_UNSCPECIFIED -- jcn */
SCM
-ly_parse_scm (char const* s, int *n, Input i, bool safe)
+ly_parse_scm (char const *s, int *n, Input i, bool safe)
{
- Parse_start ps ;
+ Parse_start ps;
ps.str = s;
ps.start_location_ = i;
-
- SCM ans = parse_protect_global ? protected_ly_parse_scm (&ps, safe)
- : internal_ly_parse_scm (&ps, safe);
+ ps.safe_ = safe;
+
+ SCM ans = parse_protect_global ? protected_ly_parse_scm (&ps)
+ : internal_ly_parse_scm (&ps);
*n = ps.nchars;
return ans;