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Refactor to share common code between #dsl_eval and #dsl_eval_immutable

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Marc Siegel 2013-07-28 19:36:03 -04:00
parent 448a1155f6
commit cb26f1f69a
1 changed files with 10 additions and 16 deletions
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26
lib/docile.rb
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@ -37,27 +37,21 @@ module Docile
# `dsl` context object
# @return [Object] the `dsl` context object after executing the block
def dsl_eval(dsl, *args, &block)
block_context = eval("self", block.binding)
proxy_context = FallbackContextProxy.new(dsl, block_context)
begin
block_context.instance_variables.each do |ivar|
value_from_block = block_context.instance_variable_get(ivar)
proxy_context.instance_variable_set(ivar, value_from_block)
end
proxy_context.instance_exec(*args, &block)
ensure
block_context.instance_variables.each do |ivar|
value_from_dsl_proxy = proxy_context.instance_variable_get(ivar)
block_context.instance_variable_set(ivar, value_from_dsl_proxy)
end
end
exec_in_proxy_context(dsl, FallbackContextProxy, *args, &block)
dsl
end
module_function :dsl_eval
def dsl_eval_immutable(dsl, *args, &block)
exec_in_proxy_context(dsl, ChainingFallbackContextProxy, *args, &block)
end
module_function :dsl_eval_immutable
private
def exec_in_proxy_context(dsl, proxy_type, *args, &block)
block_context = eval("self", block.binding)
proxy_context = ChainingFallbackContextProxy.new(dsl, block_context)
proxy_context = proxy_type.new(dsl, proxy_type.new(dsl, block_context))
begin
block_context.instance_variables.each do |ivar|
value_from_block = block_context.instance_variable_get(ivar)
@ -71,5 +65,5 @@ module Docile
end
end
end
module_function :dsl_eval_immutable
module_function :exec_in_proxy_context
end