Sha256: 10d279493021429b86c705bee81a7cd9c8394160f5eea445f5bc12fba6f5bb4d
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Size: 941 Bytes
Versions: 16
Compression:
Stored size: 941 Bytes
Contents
module JsDuck
module Util
# A class that does nothing.
# Responds to all methods by returning self, unless a hash passed to
# constructor.
# See: http://en.wikipedia.org/wiki/Null_Object_pattern
class NullObject
# Optionally takes a hash of method_name => return_value pairs,
# making it return those values for those methods, sort of like
# OpenStruct, but for all other methods self is still returned and
# any number of arguments is accepted.
def initialize(methods={})
@methods = methods
end
def method_missing(meth, *args, &block)
if @methods.has_key?(meth)
value = @methods[meth]
if value.respond_to?(:call)
value.call(*args, &block)
else
value
end
else
self
end
end
def respond_to?(meth)
@methods.has_key?(meth)
end
end
end
end
Version data entries
16 entries across 16 versions & 3 rubygems