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Contents
# frozen_string_literal: true
module Vedeu
module Coercers
# Converts a given value into a {Vedeu::Colours::Colour} if
# possible.
#
# @api private
#
class Colour
include Vedeu::Common
# @param (see #initialize)
# @return (see #coerce)
def self.coerce(value)
new(value).coerce
end
# @param value [void]
# @return [Vedeu::Coercers::Colour]
def initialize(value)
@value = value
end
# @raise [Vedeu::Error::Fatal] When the value cannot be coerced.
# @return [void]
def coerce
if absent?(value)
Vedeu::Colours::Colour.new
elsif background?
Vedeu::Colours::Colour.new(background: value)
elsif colour?
value
elsif foreground?
Vedeu::Colours::Colour.new(foreground: value)
elsif hash?(value)
attributes = Vedeu::Coercers::ColourAttributes.coerce(value)
Vedeu::Colours::Colour.new(attributes)
else
fail Vedeu::Error::Fatal, 'Vedeu cannot coerce this colour.'
end
end
protected
# @!attribute [r] value
# @return [void]
attr_reader :value
private
# @return [Boolean]
def background?
value.is_a?(Vedeu::Colours::Background)
end
# @return [Boolean]
def colour?
value.is_a?(Vedeu::Colours::Colour)
end
# @return [Boolean]
def foreground?
value.is_a?(Vedeu::Colours::Foreground)
end
end # Colour
end # Coercers
end # Vedeu
Version data entries
8 entries across 8 versions & 1 rubygems