* error.c: new functions to deal exceptions with string instances.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34787 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 48 insertions, 0 deletions

diff --git a/error.c b/error.c
index f83cf3d5cf..77ca3a91f3 100644
--- a/error.c
+++ b/error.c
@@ -1781,11 +1781,31 @@ make_errno_exc(const char *mesg)
     return rb_syserr_new(n, mesg);
 }
 
+static VALUE
+make_errno_exc_str(VALUE mesg)
+{
+    int n = errno;
+
+    errno = 0;
+    if (!mesg) mesg = Qnil;
+    if (n == 0) {
+	const char *s = !NIL_P(mesg) ? RSTRING_PTR(mesg) : "";
+	rb_bug("rb_sys_fail_str(%s) - errno == 0", s);
+    }
+    return rb_syserr_new_str(n, mesg);
+}
+
 VALUE
 rb_syserr_new(int n, const char *mesg)
 {
     VALUE arg;
     arg = mesg ? rb_str_new2(mesg) : Qnil;
+    return rb_syserr_new_str(n, arg);
+}
+
+VALUE
+rb_syserr_new_str(int n, VALUE arg)
+{
     return rb_class_new_instance(1, &arg, get_syserr(n));
 }
 
@@ -1796,12 +1816,24 @@ rb_syserr_fail(int e, const char *mesg)
 }
 
 void
+rb_syserr_fail_str(int e, VALUE mesg)
+{
+    rb_exc_raise(rb_syserr_new_str(e, mesg));
+}
+
+void
 rb_sys_fail(const char *mesg)
 {
     rb_exc_raise(make_errno_exc(mesg));
 }
 
 void
+rb_sys_fail_str(VALUE mesg)
+{
+    rb_exc_raise(make_errno_exc_str(mesg));
+}
+
+void
 rb_mod_sys_fail(VALUE mod, const char *mesg)
 {
     VALUE exc = make_errno_exc(mesg);
@@ -1810,6 +1842,14 @@ rb_mod_sys_fail(VALUE mod, const char *mesg)
 }
 
 void
+rb_mod_sys_fail_str(VALUE mod, VALUE mesg)
+{
+    VALUE exc = make_errno_exc_str(mesg);
+    rb_extend_object(exc, mod);
+    rb_exc_raise(exc);
+}
+
+void
 rb_mod_syserr_fail(VALUE mod, int e, const char *mesg)
 {
     VALUE exc = rb_syserr_new(e, mesg);
@@ -1818,6 +1858,14 @@ rb_mod_syserr_fail(VALUE mod, int e, const char *mesg)
 }
 
 void
+rb_mod_syserr_fail_str(VALUE mod, int e, VALUE mesg)
+{
+    VALUE exc = rb_syserr_new_str(e, mesg);
+    rb_extend_object(exc, mod);
+    rb_exc_raise(exc);
+}
+
+void
 rb_sys_warning(const char *fmt, ...)
 {
     char buf[BUFSIZ];