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# frozen_string_literal: true
require 'contracts'
require 'aruba/basic_configuration/option'
require 'aruba/in_config_wrapper'
# Aruba
module Aruba
# Basic configuration for Aruba
#
# @private
class BasicConfiguration
include Contracts
class << self
def known_options
@known_options ||= {}
end
# Define an option reader
#
# @param [Symbol] name
# The name of the reader
#
# @option [Class, Module] type
# The type contract for the option
#
# @option [Object] default
# The default value
def option_reader(name, type:, default: nil)
raise ArgumentError, 'Either use block or default value' if block_given? && default
add_option(name, block_given? ? yield(InConfigWrapper.new(known_options)) : default)
Contract None => type
define_method(name) { find_option(name).value }
end
# Define an option reader and writer
#
# @param [Symbol] name
# The name of the reader
#
# @option [Class, Module] type
# The type contract for the option
#
# @option [Object] default
# The default value
#
def option_accessor(name, type:, default: nil)
raise ArgumentError, 'Either use block or default value' if block_given? && default
# Add writer
add_option(name, block_given? ? yield(InConfigWrapper.new(known_options)) : default)
Contract type => type
define_method(:"#{name}=") { |v| find_option(name).value = v }
# Add reader
option_reader name, type: type
end
private
def add_option(name, value = nil)
return if known_options.key?(name)
known_options[name] = Option.new(name: name, value: value)
self
end
end
protected
attr_accessor :local_options
attr_writer :hooks
public
# Create configuration
def initialize
initialize_configuration
end
# @yield [Configuration]
#
# Yields self
def configure
yield self if block_given?
end
# Reset configuration
def reset
initialize_configuration
end
# Make deep dup copy of configuration
def make_copy
obj = dup
obj.local_options = Marshal.load(Marshal.dump(local_options))
obj.hooks = @hooks
obj
end
# Define before-hook
#
# @param [Symbol, String] name
# The name of the hook
#
# @yield
# The code block which should be run. This is a configure time only option
def before(name, &block)
name = format('%s_%s', 'before_', name.to_s).to_sym
raise ArgumentError, 'A block is required' unless block
@hooks.append(name, block)
self
end
# Run before-hook
#
# @param [Symbol, String] name
# The name of the hook
#
# @param [Proc] context
# The context a hook should run in
#
# @param [Array] args
# Arguments for the run of hook
def run_before_hook(name, context, *args)
name = format('%s_%s', 'before_', name.to_s).to_sym
@hooks.execute(name, context, *args)
end
# Define after-hook
#
# @param [Symbol, String] name
# The name of the hook
#
# @yield
# The code block which should be run. This is a configure time only option
def after(name, &block)
name = format('%s_%s', 'after_', name.to_s).to_sym
raise ArgumentError, 'A block is required' unless block
@hooks.append(name, block)
self
end
# Run after-hook
#
# @param [Symbol, String] name
# The name of the hook
#
# @param [Proc] context
# The context a hook should run in
#
# @param [Array] args
# Arguments for the run of hook
def run_after_hook(name, context, *args)
name = format('%s_%s', 'after_', name.to_s).to_sym
@hooks.execute(name, context, *args)
end
# Check if <name> is option
#
# @param [String, Symbol] name
# The name of the option
def option?(name)
local_options.any? { |_, v| v.name == name.to_sym }
end
def ==(other)
local_options.values.map(&:value) == other.local_options.values.map(&:value)
end
# Set if name is option
def set_if_option(name, *args)
public_send(:"#{name}=", *args) if option? name
end
private
def initialize_configuration
@local_options = Marshal.load(Marshal.dump(self.class.known_options))
@hooks = Hooks.new
end
def find_option(name)
raise NotImplementedError, %(Unknown option "#{name}") unless option? name
local_options[name]
end
end
end
|
