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|
# frozen_string_literal: true
require "forwardable"
require_relative "configuration"
require_relative "conversions"
require_relative "conversion_target"
module Necromancer
# A class used by Necromancer to provide user interace
#
# @api public
class Context
extend Forwardable
def_delegators :"@conversions", :register
# Create a context.
#
# @api private
def initialize(&block)
block.(configuration) if block_given?
@conversions = Conversions.new(configuration)
@conversions.load
end
# The configuration object.
#
# @example
# converter = Necromancer.new
# converter.configuration.strict = true
#
# @return [Necromancer::Configuration]
#
# @api public
def configuration
@configuration ||= Configuration.new
end
# Yields global configuration to a block.
#
# @yield [Necromancer::Configuration]
#
# @example
# converter = Necromancer.new
# converter.configure do |config|
# config.strict true
# end
#
# @api public
def configure
yield configuration if block_given?
end
# Converts the object
# @param [Object] object
# any object to be converted
#
# @api public
def convert(object = ConversionTarget::UndefinedValue, &block)
ConversionTarget.for(conversions, object, block)
end
# Check if this converter can convert source to target
#
# @param [Object] source
# the source class
# @param [Object] target
# the target class
#
# @return [Boolean]
#
# @api public
def can?(source, target)
!conversions[source, target].nil?
rescue NoTypeConversionAvailableError
false
end
# Inspect this context
#
# @api public
def inspect
%(#<#{self.class}@#{object_id} @config=#{configuration}>)
end
protected
attr_reader :conversions
end # Context
end # Necromancer
|
