JSON::Alias

Macro for generating an alias type from JSON/YAML. Useful for parsing JSON/YAML without needing to manually create a type alias or parse by hand.

Installation

  1. Add the dependency to your shard.yml:

    dependencies:
  json-alias:
    github: nobodywasishere/json-alias

  2. Run shards install

Usage

Generate an alias from a JSON/YAML file at compile time:

require "json"
require "json-alias"

class TestClass
  # alias JsonData = Array(Hash(String, Int32 | String) | Hash(String, Int32) | Hash(String, String))
  # Need to pass absolute path to example, hence __DIR__
  JSON::Alias.from_json JsonData, "#{__DIR__}/example.json"

  # alias YamlData = Array(Hash(String, Int32 | String) | Hash(String, Int32) | Hash(String, String))
  JSON::Alias.from_yaml YamlData, "#{__DIR__}/example.yaml"

  getter json : JsonData
  getter yaml : YamlData

  def initialize
    data = File.read("#{__DIR__}/data.json")

    @json = JsonData.from_json(data)
    @yaml = YamlData.from_json(data)
  end
end

tc = TestClass.new

puts tc.json
puts tc.yaml

puts "Success."

Tool for generating type from command-line:

$ shards build parse_data --release
$ ./bin/parse_data --file spec/example.json --type json

Array(Hash(String, Int32 | String) | Hash(String, Int32) | Hash(String, String))

Development

TODO Write development instructions here

Contributing

  1. Fork it (https://github.com/nobodywasishere/json-alias/fork)
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request

Contributors