Class: Dry::Logic::Builder::Context Private

Inherits:
Object
  • Object
show all
Defined in:
lib/dry/logic/builder/context_predicate_name.rb

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.

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Context

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.

Defines methods for operations and predicates



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# File 'lib/dry/logic/builder/context_predicate_name.rb', line 23

def initialize
  Operations.constants(false).each do |name|
    next if Dry::Logic::Builder::IGNORED_OPERATIONS.include?(name)

    operation = Operations.const_get(name)

    define_singleton_method(name.downcase) do |*args, **kwargs, &block|
      operation.new(*call(&block), *args, **kwargs)
    end
  end

  Predicates::Methods.instance_methods(false).each do |name|
    predicate(name, Predicates[name]) unless Dry::Logic::Builder::IGNORED_PREDICATES.include?(name)
  end
end

Instance Method Details

#predicate(name, context = nil, &block) ⇒ 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.

Defines custom predicate



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# File 'lib/dry/logic/builder/context_predicate_name.rb', line 12

def predicate(name, context = nil, &block)
  singleton_class.undef_method(name) if singleton_class.method_defined?(name)

  predicate = Rule::Predicate.new(context || block)

  define_singleton_method(name) do |*args|
    predicate.curry(*args)
  end
end