https://github.com/breuleux/earl-shapely

Earl Grey macros for shapely
https://github.com/breuleux/earl-shapely

Last synced: 9 days ago
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Earl Grey macros for shapely

• Host: GitHub
• URL: https://github.com/breuleux/earl-shapely
• Owner: breuleux
• Created: 2015-12-23T22:56:33.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2017-01-15T02:28:09.000Z (almost 8 years ago)
• Last Synced: 2024-10-18T18:55:21.260Z (28 days ago)
• Size: 2.93 KB
• Stars: 3
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        

earl-shapely

============

Earl Grey macros to wrap

[shapely](https://github.com/AriaMinaei/shapely) so that it can

interface with

[Earl Grey](https://earl-grey.io)

The `::`, `record` and `union` macros are defined and are used as

such:

```earlgrey

require:

   earl-shapely ->

      any, nil, array-of

require-macros:

   earl-shapely ->

      ::, record, union

record Person:

   name    :: String

   age     :: Number

   friends :: array-of(Person)

union BinaryTree:

   nil

   record:

      val   :: any

      left  :: BinaryTree

      right :: BinaryTree

```

The `::` operator can also be used to check if something has a certain

type. It is also compatible with Earl Grey's assignment and pattern

matching syntax:

```earlgrey

tree :: BinaryTree = {val = 1, left = {val = 10}}

if tree :: BinaryTree:

   print "It's a tree!"

else:

   print "It isn't!"

what-is-it(match value) =

   s :: String ->

      '"{s}" is a string!'

   n :: Number ->

      '{n} is a number!'

   (t and {=> val}) :: BinaryTree ->

      '{t} is a binary tree! The top level has value {val}'

print what-is-it(tree)

print what-is-it("Blah blah blah")

```