Class: Dry::Types::Constructor::Function Private

Inherits:
Object
  • Object
show all
Defined in:
lib/dry/types/constructor/function.rb

Overview

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

Function is used internally by Constructor types

API:

  • private

Direct Known Subclasses

MethodCall, Safe, Wrapper

Defined Under Namespace

Classes: MethodCall, Safe, Wrapper

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(fn) ⇒ Function

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 a new instance of Function.

API:

  • private



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# File 'lib/dry/types/constructor/function.rb', line 167

def initialize(fn)
  @fn = fn
end

Instance Attribute Details

#fn ⇒ Object (readonly)

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.

API:

  • private



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# File 'lib/dry/types/constructor/function.rb', line 165

def fn
  @fn
end

Class Method Details

.[](fn) ⇒ Function

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.

Choose or build specialized invokation code for a callable

Raises:

Parameters:

Returns:

API:

  • private



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# File 'lib/dry/types/constructor/function.rb', line 135

def self.[](fn)
  raise ::ArgumentError, "Missing constructor block" if fn.nil?

  if fn.is_a?(Function)
    fn
  elsif fn.respond_to?(:arity) && fn.arity.equal?(2)
    Wrapper.new(fn)
  elsif fn.is_a?(::Method)
    MethodCall[fn, yields_block?(fn)]
  elsif yields_block?(fn)
    new(fn)
  else
    Safe.new(fn)
  end
end

.yields_block?(fn) ⇒ 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:

API:

  • private



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# File 'lib/dry/types/constructor/function.rb', line 152

def self.yields_block?(fn)
  *, (last_arg,) =
    if fn.respond_to?(:parameters)
      fn.parameters
    else
      fn.method(:call).parameters
    end

  last_arg.equal?(:block)
end

Instance Method Details

#<<(other) ⇒ Function

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:

API:

  • private



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# File 'lib/dry/types/constructor/function.rb', line 196

def <<(other)
  f = Function[other]
  Function[-> x, &b { self.(f.(x, &b), &b) }]
end

#>>(other) ⇒ Function

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:

API:

  • private



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# File 'lib/dry/types/constructor/function.rb', line 190

def >>(other)
  f = Function[other]
  Function[-> x, &b { f.(self.(x, &b), &b) }]
end

#arity ⇒ Integer

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:

API:

  • private



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# File 'lib/dry/types/constructor/function.rb', line 176

def arity = 1

#call(input) ⇒ Object Also known as: []

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:

API:

  • private



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# File 'lib/dry/types/constructor/function.rb', line 172

def call(input, &) = @fn.(input, &)

#to_ast ⇒ Array

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:

API:

  • private



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# File 'lib/dry/types/constructor/function.rb', line 181

def to_ast
  if fn.is_a?(::Proc)
    [:id, FnContainer.register(fn)]
  else
    [:callable, fn]
  end
end

#wrapper? ⇒ 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:

API:

  • private



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# File 'lib/dry/types/constructor/function.rb', line 178

def wrapper? = arity.equal?(2)