88 lines
2.5 KiB
Ruby
88 lines
2.5 KiB
Ruby
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# frozen_string_literal: true
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# original Authors: Gitlab
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# https://gitlab.com/gitlab-org/gitlab/-/blob/master/config/initializers/0_inject_enterprise_edition_module.rb
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#
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### Ref: https://medium.com/@leo_hetsch/ruby-modules-include-vs-prepend-vs-extend-f09837a5b073
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# Ancestors chain : it holds a list of constant names which are its ancestors
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# example, by calling ancestors on the String class,
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# String.ancestors => [String, Comparable, Object, PP::ObjectMixin, Kernel, BasicObject]
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#
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# Include: Ruby will insert the module into the ancestors chain of the class, just after its superclass
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# ancestor chain : [OriginalClass, IncludedModule, ...]
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#
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# Extend: class will actually import the module methods as class methods
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#
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# Prepend: Ruby will look into the module methods before looking into the class.
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# ancestor chain : [PrependedModule, OriginalClass, ...]
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########
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require 'active_support/inflector'
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module InjectEnterpriseEditionModule
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def prepend_mod_with(constant_name, namespace: Object, with_descendants: false)
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each_extension_for(constant_name, namespace) do |constant|
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prepend_module(constant, with_descendants)
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end
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end
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def extend_mod_with(constant_name, namespace: Object)
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# rubocop:disable Performance/MethodObjectAsBlock
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each_extension_for(
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constant_name,
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namespace,
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&method(:extend)
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)
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# rubocop:enable Performance/MethodObjectAsBlock
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end
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def include_mod_with(constant_name, namespace: Object)
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# rubocop:disable Performance/MethodObjectAsBlock
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each_extension_for(
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constant_name,
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namespace,
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&method(:include)
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)
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# rubocop:enable Performance/MethodObjectAsBlock
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end
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def prepend_mod(with_descendants: false)
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prepend_mod_with(name, with_descendants: with_descendants)
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end
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def extend_mod
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extend_mod_with(name)
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end
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def include_mod
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include_mod_with(name)
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end
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private
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def prepend_module(mod, with_descendants)
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prepend(mod)
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descendants.each { |descendant| descendant.prepend(mod) } if with_descendants
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end
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def each_extension_for(constant_name, namespace)
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ChatwootApp.extensions.each do |extension_name|
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extension_namespace =
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const_get_maybe_false(namespace, extension_name.camelize)
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extension_module =
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const_get_maybe_false(extension_namespace, constant_name)
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yield(extension_module) if extension_module
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end
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end
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def const_get_maybe_false(mod, name)
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mod&.const_defined?(name, false) && mod&.const_get(name, false)
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end
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end
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Module.prepend(InjectEnterpriseEditionModule)
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