Created
November 20, 2019 09:22
-
-
Save dearshrewdwit/8ce0da6f1b1a52fb700f66263240047e to your computer and use it in GitHub Desktop.
Re-implementing class in ruby
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
module BasicClass | |
def self.new(parent_klass = nil, &block) | |
klass = lambda do | |
class_scope = { | |
ancestry: [klass, self], | |
instance_methods: {}, | |
methods: { | |
define: lambda { |name, &block| class_scope[:instance_methods][name] = block }, | |
new: lambda do |*args| | |
instance = lambda do | |
instance_scope = { | |
class_methods: class_scope[:methods].dup, | |
methods: class_scope[:instance_methods].dup, | |
instance_vars: {} | |
} | |
instance_scope[:methods][:initialize].call(instance_scope, *args) | |
binding | |
end | |
instance_scope = instance.call.local_variable_get('instance_scope') | |
instance | |
end | |
}, | |
} | |
class_scope | |
end | |
class_scope = klass.call | |
block.call(class_scope) | |
klass | |
end | |
end | |
DockingStation = BasicClass.new do |class_scope| | |
class_scope[:methods][:define].call(:initialize) do |instance_scope, capacity=20| | |
instance_scope[:instance_vars]['@capacity'] = capacity | |
instance_scope[:instance_vars]['@bikes'] = [] | |
end | |
class_scope[:methods][:define].call(:bikes) do |instance_scope| | |
instance_scope[:instance_vars]['@bikes'] | |
end | |
class_scope[:methods][:define].call(:dock) do |instance_scope, bike| | |
instance_scope[:instance_vars]['@bikes'] << bike | |
end | |
class_scope[:methods][:define].call(:release_bike) do |instance_scope| | |
instance_scope[:instance_vars]['@bikes'].pop | |
end | |
end |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment