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# Type kinds are the basic categories which a type may belong to (`Object`, `Scalar`, `Union`...)
module GraphQL::TypeKinds
# These objects are singletons, eg `GraphQL::TypeKinds::UNION`, `GraphQL::TypeKinds::SCALAR`.
class TypeKind
attr_reader :name
def initialize(name, resolves: false, fields: false, wraps: false, input: false)
@name = name
@resolves = resolves
@fields = fields
@wraps = wraps
@input = input
@composite = fields? || resolves?
end
# Does this TypeKind have multiple possible implementors?
def resolves?; @resolves; end
# Does this TypeKind have queryable fields?
def fields?; @fields; end
# Does this TypeKind modify another type?
def wraps?; @wraps; end
# Is this TypeKind a valid query input?
def input?; @input; end
def to_s; @name; end
# Is this TypeKind composed of many values?
def composite?; @composite; end
end
TYPE_KINDS = [
SCALAR = TypeKind.new("SCALAR", input: true),
OBJECT = TypeKind.new("OBJECT", fields: true),
INTERFACE = TypeKind.new("INTERFACE", resolves: true, fields: true),
UNION = TypeKind.new("UNION", resolves: true),
ENUM = TypeKind.new("ENUM", input: true),
INPUT_OBJECT = TypeKind.new("INPUT_OBJECT", input: true),
LIST = TypeKind.new("LIST", wraps: true),
NON_NULL = TypeKind.new("NON_NULL", wraps: true),
]
KIND_NAMES = TYPE_KINDS.map(&:name)
class TypeKind
KIND_NAMES.each do |kind_name|
define_method("#{kind_name.downcase}?") do
self.name == kind_name
end
end
end
end
Version data entries
20 entries across 20 versions & 1 rubygems