class NameError
Raised when a given name is invalid or undefined.
puts foo
raises the exception:
NameError: undefined local variable or method `foo' for main:Object
Since constant names must start with a capital:
Integer.const_set :answer, 42
raises the exception:
NameError: wrong constant name answer
Public Class Methods
Source
static VALUE
name_err_initialize(int argc, VALUE *argv, VALUE self)
{
ID keywords[1];
VALUE values[numberof(keywords)], name, options;
argc = rb_scan_args(argc, argv, "*:", NULL, &options);
keywords[0] = id_receiver;
rb_get_kwargs(options, keywords, 0, numberof(values), values);
name = (argc > 1) ? argv[--argc] : Qnil;
rb_call_super(argc, argv);
name_err_init_attr(self, values[0], name);
return self;
} Construct a new NameError exception. If given the name parameter may subsequently be examined using the NameError#name method. receiver parameter allows to pass object in context of which the error happened. Example:
[1, 2, 3].method(:rject) # NameError with name "rject" and receiver: Array [1, 2, 3].singleton_method(:rject) # NameError with name "rject" and receiver: [1, 2, 3]
Public Instance Methods
Source
static VALUE
name_err_local_variables(VALUE self)
{
VALUE vars = rb_attr_get(self, id_local_variables);
if (NIL_P(vars)) {
VALUE iseqw = rb_attr_get(self, id_iseq);
if (!NIL_P(iseqw)) vars = rb_iseqw_local_variables(iseqw);
if (NIL_P(vars)) vars = rb_ary_new();
rb_ivar_set(self, id_local_variables, vars);
}
return vars;
} Return a list of the local variable names defined where this NameError exception was raised.
Internal use only.
Source
static VALUE
name_err_name(VALUE self)
{
return rb_attr_get(self, id_name);
} Return the name associated with this NameError exception.
Source
static VALUE
name_err_receiver(VALUE self)
{
VALUE recv = rb_ivar_lookup(self, id_recv, Qundef);
if (!UNDEF_P(recv)) return recv;
VALUE mesg = rb_attr_get(self, id_mesg);
if (!rb_typeddata_is_kind_of(mesg, &name_err_mesg_data_type)) {
rb_raise(rb_eArgError, "no receiver is available");
}
name_error_message_t *ptr;
TypedData_Get_Struct(mesg, name_error_message_t, &name_err_mesg_data_type, ptr);
return ptr->recv;
} Return the receiver associated with this NameError exception.
Ruby Core © 1993–2024 Yukihiro Matsumoto
Licensed under the Ruby License.
Ruby Standard Library © contributors
Licensed under their own licenses.