https://github.com/j8r/crystal-object-send

Interpret a String to an Object method call
https://github.com/j8r/crystal-object-send

crystal-lang method send string

Last synced: 10 months ago
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Interpret a String to an Object method call

• Host: GitHub
• URL: https://github.com/j8r/crystal-object-send
• Owner: j8r
• License: isc
• Created: 2019-02-12T13:39:57.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2019-08-09T23:35:36.000Z (over 6 years ago)
• Last Synced: 2025-05-12T22:55:19.966Z (10 months ago)
• Topics: crystal-lang, method, send, string
• Language: Crystal
• Size: 8.79 KB
• Stars: 13
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Crystal Object#send

[![Build Status](https://cloud.drone.io/api/badges/j8r/crystal-object-send/status.svg)](https://cloud.drone.io/j8r/crystal-object-send)

[![ISC](https://img.shields.io/badge/License-ISC-blue.svg?style=flat-square)](https://en.wikipedia.org/wiki/ISC_license)

Interpret a String to an Object method call.

Similar to the Ruby's `Object#send`.

Here macros and the `Crystal::Parser` are used to build a pseudo interpreter.

## Disclaimer

There are lots of limitations, this library is mainly an experiment.

Usually you better avoid using it and interpret the string on your own. It would be more performant and safer.

## Installation

Add the dependency to your `shard.yml`:

```yaml

dependencies:

  object-send:

    github: j8r/crystal-object-send

```

## Examples

```cr

"abc".send "chars"         #=> ['a', 'b', 'c']

"abc".send "lchop('a')"    #=> "bc"

"abc".send "insert 1, 'z'" #=> "azbc"

2.send("+ 3")              #=> 5

var = "first 2"

[0, 1, 3].send(var)        #=> [0, 1]

[0, 1, 2].send("[-1]?")    #=> eq 2

[0, 1, 2].send("[..]")     #=> eq [0, 1, 2]

```

See more in the [specs](spec/object_send_spec.cr)

## License

Copyright (c) 2019 Julien Reichardt - ISC License