local error   = error
local pairs   = pairs
local pcall   = pcall
local require = require
local type    = type                                                            --[[VERBOSE]] local verbose = require "oil.verbose"

module "oil.builder"

function create(factories, comps)
	comps = comps or {}
	for name, factory in pairs(factories) do
		if name:match("^%u") and comps[name] == nil then
			comps[name] = factory()
		end
	end
	return comps
end

local NamePat    = "[^;]+"
local FactoryFrm = "oil.builder.%s"
local ArchFrm    = "oil.arch.%s"
local ErrorFrm   = "module '%s' not found:"
function build(customization, built)
	for name in customization:gmatch(NamePat) do                                  --[[VERBOSE]] verbose:built(true, "creating ",name," components")
		local package = FactoryFrm:format(name)
		local success, module = pcall(require, package)
		if success then
			built = module.create(built)
		elseif not module:find(ErrorFrm:format(package), nil, true) then            --[[VERBOSE]] verbose:built(false)
			error(module, 2)                                                          --[[VERBOSE]] else verbose:built("unable to load builder for architecture ",name)
		end                                                                         --[[VERBOSE]] verbose:built(false)
	end
	for name in customization:gmatch(NamePat) do                                  --[[VERBOSE]] verbose:built(true, "assembling ",name," components")
		local package = ArchFrm:format(name)
		local success, module = pcall(require, package)
		if success then
			if module.assemble then
				module.assemble(built)
			end
		elseif not module:find(ErrorFrm:format(package), nil, true) then            --[[VERBOSE]] verbose:built(false)
			error(module, 2)                                                          --[[VERBOSE]] else verbose:built("unable to load architecture definition for ",name)
		end                                                                         --[[VERBOSE]] verbose:built(false)
	end
	return built
end