Raised when throw is called with a tag which does not have corresponding catch block.
throw "foo", "bar"
raises the exception:
UncaughtThrowError: uncaught throw "foo"
static VALUE
uncaught_throw_init(int argc, const VALUE *argv, VALUE exc)
{
rb_check_arity(argc, 2, UNLIMITED_ARGUMENTS);
rb_call_super(argc - 2, argv + 2);
rb_ivar_set(exc, id_tag, argv[0]);
rb_ivar_set(exc, id_value, argv[1]);
return exc;
} Document-class: UncaughtThrowError
Raised when throw is called with a tag which does not have corresponding catch block.
throw "foo", "bar"
raises the exception:
UncaughtThrowError: uncaught throw "foo"
static VALUE
uncaught_throw_tag(VALUE exc)
{
return rb_ivar_get(exc, id_tag);
} Return the tag object which was called for.
static VALUE
uncaught_throw_to_s(VALUE exc)
{
VALUE mesg = rb_attr_get(exc, id_mesg);
VALUE tag = uncaught_throw_tag(exc);
return rb_str_format(1, &tag, mesg);
} Returns formatted message with the inspected tag.
static VALUE
uncaught_throw_value(VALUE exc)
{
return rb_ivar_get(exc, id_value);
} Return the return value which was called for.
Ruby Core © 1993–2025 Yukihiro Matsumoto
Licensed under the Ruby License.
Ruby Standard Library © contributors
Licensed under their own licenses.