https://github.com/bluenote10/oop_utils

Nim macros for building OOP class hierarchies.
https://github.com/bluenote10/oop_utils

Last synced: 30 days ago
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Nim macros for building OOP class hierarchies.

• Host: GitHub
• URL: https://github.com/bluenote10/oop_utils
• Owner: bluenote10
• Created: 2019-03-24T17:52:21.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2021-06-09T08:05:39.000Z (over 3 years ago)
• Last Synced: 2024-11-07T02:30:47.838Z (3 months ago)
• Language: Nim
• Homepage:
• Size: 101 KB
• Stars: 35
• Watchers: 5
• Forks: 0
• Open Issues: 4
• Metadata Files:
  • Readme: readme.md

Awesome Lists containing this project

• awesome-nim - oop_utils - Nim macros for building OOP class hierarchies. (Language Features / Object-Oriented Programming)

README

        
# oop_utils [![Build Status](https://github.com/bluenote10/oop_utils/workflows/ci/badge.svg)](https://github.com/bluenote10/oop_utils/actions?query=workflow%3Aci) [![license](https://img.shields.io/github/license/mashape/apistatus.svg)](LICENSE) 

oop_utils provides macros that allow to easily create OOP class hierarchies.

It comes in two different flavors:

- [Standard classes](readme_standard_class.md): Allows to define type hierarchies based on Nim's standard method dispatch.

- [Closure classes](readme_closure_class.md): Allows to define type hierarchies based on closure method dispatch.

The two approaches have minor syntactical differences, but share the same general scheme. For comparison:

```nim

import oop_utils/standard_class

# A standard class:

# - The object instance is attached to a `self` symbol.

# - Initialization + field definitions go into the ctor proc.

class(Counter):

  ctor(newCounter) proc(init: int) =

    self:

      counter = init

  method inc*() {.base.} = self.counter.inc

  method dec*() {.base.} = self.counter.dec

  method get*(): int {.base.} = self.counter

```

vs.

```nim

import oop_utils/closure_class

# A closure class:

# - No `self` symbol required.

# - Initialization + field definitions go into main scopre to emphasize closure nature.

class(Counter):

  ctor(newCounter) proc(init: int)

  var counter = init

  proc inc*() = counter.inc

  proc dec*() = counter.dec

  proc get*(): int = counter

```