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Contents
require 'rest-core'
module RestCore::Wrapper
include RestCore
def self.included mod
mod.send(:attr_reader, :init, :middles, :wrapped)
end
def initialize &block
@middles ||= []
instance_eval(&block) if block_given?
@wrapped ||= to_app(@init || Ask)
end
def use middle, *args, &block
middles << [middle, args, block]
end
def run app
@init = app
end
def members
middles.map{ |(middle, args, block)|
if middle.public_method_defined?(:wrapped)
# TODO: this is hacky... try to avoid calling new!
middle.members + middle.new(Ask.new, *args, &block).members
else
middle.members
end
}.flatten
end
def to_app init=@init
# === foldr m.new app middles
middles.reverse.inject(init.new){ |app_, (middle, args, block)|
begin
middle.new(app_, *partial_deep_copy(args), &block)
rescue ArgumentError => e
raise ArgumentError.new("#{middle}: #{e}")
end
}
end
module_function
def partial_deep_copy obj
case obj
when Array; obj.map{ |o| partial_deep_copy(o) }
when Hash ; obj.inject({}){ |r, (k, v)| r[k] = partial_deep_copy(v); r }
when Numeric, Symbol, TrueClass, FalseClass, NilClass; obj
else begin obj.dup; rescue TypeError; obj; end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems