mirror of
https://github.com/kikito/middleclass.git
synced 2024-11-08 09:34:22 +00:00
54 lines
2.7 KiB
Plaintext
54 lines
2.7 KiB
Plaintext
h1. MiddleClass
|
|
|
|
Lua OOP classes usually end being:
|
|
* multi-file libraries, too difficult to understand
|
|
* very small libraries, not very powerful
|
|
|
|
Middleclass attemps to be a mid-sized library (~120 lines of code, on a single file), with clean, easy to understand code, and yet powerful enough to be used in most cases.
|
|
|
|
h1. Documentation
|
|
|
|
See the "LÖVE wiki page":http://love2d.org/wiki/MiddleClass for examples & documentation.
|
|
|
|
h1. Features
|
|
* ~100 lines of code
|
|
* top-level Object class
|
|
* all methods are virtual
|
|
* instance.class returns the instance's class
|
|
* @Class.name@ returns the class name (a string)
|
|
* @Class.superclass@ returns its super class
|
|
* Subclassing:
|
|
** @class(name)@ creates a subclass of @Object@
|
|
** @class(name, Superclass)@ creates a subclass of the class @SuperClass@
|
|
** @SuperClass:subclass(name)@ also creates a subclass of the class @SuperClass@
|
|
* Instantiation:
|
|
** Classes can define an @initialize@ method for initializing new instances. They can accept an arbitrary number of params.
|
|
** Instances are created by doing @Class:new(params)@ or also @Class(params)@
|
|
** It is recommended to use the @super@ facility inside all defined initializers: @super.initialize(self, params)@.
|
|
* support for Lua metamethods: just define a method called @__tostring@, @__add@, etc. and your instances will be able to use it.
|
|
* Mixins:
|
|
** A very simple mechanism for sharing functionality among a group of classes that are otherwise non-related.
|
|
** Mixins are just simple lua tables with functions inside them.
|
|
** @Class:include(mixin)@ will copy the function definitions of @mixin@ to @class@
|
|
** If @mixin@ contains a function, called @included@, that function will be invoked right after the functions have been copied. It allows for modifying the class more profoundly.
|
|
* The function @instanceOf(class, instance)@ returns @true@ if @instance@ is an instance of the class @Class@
|
|
* The function @subclassOf(Superclass, Class)@ returns @true@ if @Class@ is a subclass of @SuperClass@
|
|
* The function @includes(mixin, Class)@ returns @true@ if @Class@ (or one of its superclasses) includes @mixin@.
|
|
* The @super@ facility, can be used inside a method to call the same method as it's implemented by the superclass: @super.methodName(self, params)@
|
|
|
|
Features left out:
|
|
* metaclasses
|
|
* classes are not Objects (instances are)
|
|
|
|
h1. Extras
|
|
|
|
This library has a companion lib that adds a lot of interesting functionality to your objects. Give it a look at "middleclass-extras":https://github.com/kikito/middleclass-extras
|
|
|
|
If you are looking for @MindState@ (now called @Stateful@), it's over there, too.
|
|
|
|
h1. Specs
|
|
|
|
You may find the specs for this library in "middleclass-specs":https://github.com/kikito/middleclass-specs
|
|
|
|
|