diff options
Diffstat (limited to 'string.c')
-rw-r--r-- | string.c | 18 |
1 files changed, 18 insertions, 0 deletions
@@ -615,6 +615,23 @@ rb_check_string_type(VALUE str) return str; } +/* + * call-seq: + * String.try_convert(obj) -> string or nil + * + * Try to convert <i>obj</i> into a String, using to_str method. + * Returns converted regexp or nil if <i>obj</i> cannot be converted + * for any reason. + * + * String.try_convert("str") # => str + * String.try_convert(/re/) # => nil + */ +static VALUE +rb_str_s_try_convert(VALUE dummy, VALUE str) +{ + return rb_check_string_type(str); +} + VALUE rb_str_substr(VALUE str, long beg, long len) { @@ -4877,6 +4894,7 @@ Init_String(void) rb_cString = rb_define_class("String", rb_cObject); rb_include_module(rb_cString, rb_mComparable); rb_define_alloc_func(rb_cString, str_alloc); + rb_define_singleton_method(rb_cString, "try_convert", rb_str_s_try_convert, 1); rb_define_method(rb_cString, "initialize", rb_str_init, -1); rb_define_method(rb_cString, "initialize_copy", rb_str_replace, 1); rb_define_method(rb_cString, "<=>", rb_str_cmp_m, 1); |