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require 'vcr/util/variable_args_block_caller'
module VCR
# @private
module Hooks
include VariableArgsBlockCaller
# @private
FilteredHook = Struct.new(:hook, :filters) do
include VariableArgsBlockCaller
def conditionally_invoke(*args)
filters = Array(self.filters)
return if filters.any? { |f| !call_block(f.to_proc, *args) }
call_block(hook, *args)
end
end
def self.included(klass)
klass.class_eval do
extend ClassMethods
hooks_module = Module.new
const_set("DefinedHooks", hooks_module)
include hooks_module
end
end
def invoke_hook(hook_type, *args)
hooks[hook_type].map do |hook|
hook.conditionally_invoke(*args)
end
end
def clear_hooks
hooks.clear
end
def hooks
@hooks ||= Hash.new do |hash, hook_type|
hash[hook_type] = []
end
end
def has_hooks_for?(hook_type)
hooks[hook_type].any?
end
# @private
module ClassMethods
def define_hook(hook_type, prepend = false)
placement_method = prepend ? :unshift : :<<
# Put the hook methods in a module so we can override and super to these methods.
self::DefinedHooks.module_eval do
define_method hook_type do |*filters, &hook|
hooks[hook_type].send(placement_method, FilteredHook.new(hook, filters))
end
end
end
end
end
end
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