Class: Ree::ImportDsl

Inherits:
Object show all
Defined in:
lib/ree/dsl/import_dsl.rb

Defined Under Namespace

Classes: ClassConstant, RemovedConstant, UnlinkConstError

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ImportDsl

Returns a new instance of ImportDsl.



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# File 'lib/ree/dsl/import_dsl.rb', line 4

def initialize
  setup_removed_constants
end

Instance Method Details

#cancel_patch_const_missing ⇒ Object 



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# File 'lib/ree/dsl/import_dsl.rb', line 43

def cancel_patch_const_missing
  Module.define_method(:const_missing, @_original_const_missing)
  @_original_const_missing = nil
end

#execute(klass, proc) ⇒ Object 



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# File 'lib/ree/dsl/import_dsl.rb', line 8

def execute(klass, proc)
  patch_const_missing
  
  class_constant = self.class.instance_exec(&proc)

  [
    extract_constants(class_constant),
    get_removed_constants
  ]
rescue Ree::ImportDsl::UnlinkConstError => e
  retry_after = remove_or_assign_const(klass, e.const)
  retry if retry_after
rescue NoMethodError => e
  if e.name == :& || e.name == :as
    retry_after = remove_or_assign_const(klass, e.receiver)
    retry if retry_after
  else
    raise e
  end
rescue NameError => e
  proc
    .binding
    .eval("#{e.name} = Ree::ImportDsl::ClassConstant.new('#{e.name}')")

  retry
ensure
  cancel_patch_const_missing
end

#patch_const_missing ⇒ Object 



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# File 'lib/ree/dsl/import_dsl.rb', line 37

def patch_const_missing
  return if @_original_const_missing
  @_original_const_missing = Module.instance_method(:const_missing)
  Module.define_method(:const_missing){ |const_name| raise NameError.new("class not found #{const_name.to_s}", const_name) }
end