mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
48 lines
1.2 KiB
Ruby
48 lines
1.2 KiB
Ruby
# encoding: utf-8
|
|
# frozen-string-literal: true
|
|
|
|
module Kernel
|
|
module_function
|
|
|
|
# call-seq:
|
|
# warn(*msgs, uplevel: nil, category: nil) -> nil
|
|
#
|
|
# If warnings have been disabled (for example with the
|
|
# <code>-W0</code> flag), does nothing. Otherwise,
|
|
# converts each of the messages to strings, appends a newline
|
|
# character to the string if the string does not end in a newline,
|
|
# and calls Warning.warn with the string.
|
|
#
|
|
# warn("warning 1", "warning 2")
|
|
#
|
|
# <em>produces:</em>
|
|
#
|
|
# warning 1
|
|
# warning 2
|
|
#
|
|
# If the <code>uplevel</code> keyword argument is given, the string will
|
|
# be prepended with information for the given caller frame in
|
|
# the same format used by the <code>rb_warn</code> C function.
|
|
#
|
|
# # In baz.rb
|
|
# def foo
|
|
# warn("invalid call to foo", uplevel: 1)
|
|
# end
|
|
#
|
|
# def bar
|
|
# foo
|
|
# end
|
|
#
|
|
# bar
|
|
#
|
|
# <em>produces:</em>
|
|
#
|
|
# baz.rb:6: warning: invalid call to foo
|
|
#
|
|
# If the +category+ keyword argument is given, it is passed to
|
|
# Warning.warn method.
|
|
#
|
|
def warn(*msgs, uplevel: nil, category: nil)
|
|
Primitive.rb_warn_m(msgs, uplevel, category)
|
|
end
|
|
end
|