Module: Dry::Validation::Rust::Path Private

Defined in:
lib/dry/validation/rust/path.rb

Overview

This module is part of a private API. You should avoid using this module if possible, as it may be removed or be changed in the future.

Normalizes the path forms accepted by dry-validation's public rule API.

Constant Summary collapse

Undefined =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

Object.new.freeze

Class Method Summary collapse

Class Method Details

.expand(spec) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/dry/validation/rust/path.rb', line 25

def expand(spec)
  return [parse(spec)] unless spec.is_a?(Hash)

  spec.flat_map do |key, value|
    if value.is_a?(Array)
      value.map { |child| [key, *parse(child)] }
    else
      [[key, *parse(value)]]
    end
  end
end

.fetch(data, path, undefined = Undefined) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/dry/validation/rust/path.rb', line 37

def fetch(data, path, undefined = Undefined)
  current = data
  parse(path).each do |key|
    if current.is_a?(Array) && key.is_a?(Integer)
      return undefined unless key >= 0 && key < current.length

      current = current[key]
    elsif current.respond_to?(:key?) && current.key?(key)
      current = current[key]
    else
      return undefined
    end
  end
  current
end

.key?(data, path) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/dry/validation/rust/path.rb', line 53

def key?(data, path)
  !fetch(data, path).equal?(Undefined)
end

.parse(spec) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/dry/validation/rust/path.rb', line 11

def parse(spec)
  case spec
  when nil then []
  when Symbol then [spec]
  when String then spec.split('.').map!(&:to_sym)
  when Array then spec.dup
  when Hash
    key, value = spec.first
    [key, *parse(value)]
  else
    raise ArgumentError, '+spec+ must be a Symbol, String, Array, or Hash'
  end
end

.prefix?(candidate, prefix) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/dry/validation/rust/path.rb', line 57

def prefix?(candidate, prefix)
  candidate[0, prefix.length] == prefix
end