Class: Dry::Struct::StructBuilder

Inherits:
Compiler
  • Object
show all
Defined in:
lib/dry/struct/struct_builder.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Compiler

#visit_struct

Constructor Details

#initialize(struct) ⇒ StructBuilder

Returns a new instance of StructBuilder.



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# File 'lib/dry/struct/struct_builder.rb', line 9

def initialize(struct)
  super(Types)
  @struct = struct
end

Instance Attribute Details

#struct ⇒ Object (readonly)

Returns the value of attribute struct.



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# File 'lib/dry/struct/struct_builder.rb', line 7

def struct
  @struct
end

Instance Method Details

#call(attr_name, type) { ... } ⇒ Object

Parameters:

  • attr_name (Symbol|String) —

    the name of the nested type

  • type (Dry::Struct, Dry::Types::Type::Array, Undefined) —

    the superclass of the nested struct

Yields:

  • the body of the nested struct



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# File 'lib/dry/struct/struct_builder.rb', line 18

def call(attr_name, type, &block)
  const_name = const_name(type, attr_name)
  check_name(const_name)

  builder = self
  parent = parent(type)

  new_type = ::Class.new(Undefined.default(parent, struct.abstract_class)) do
    if Undefined.equal?(parent)
      schema builder.struct.schema.clear
    end

    class_exec(&block)
  end

  struct.const_set(const_name, new_type)

  if array?(type)
    type.of(new_type)
  elsif optional?(type)
    new_type.optional
  else
    new_type
  end
end