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Contents
# frozen_string_literal: true
require_relative '../error'
module Loxxy
module BackEnd
# A Lox unary operator
class UnaryOperator
# @return [String] text representation of the operator
attr_reader :name
# @return [Array<Class>]
attr_reader :signatures
# @param aName [String] "name" of operator
# @param theSignatures [Array<Class>] allowed signatures
def initialize(aName, theSignatures)
@name = aName
@signatures = theSignatures
end
def validate_operand(operand1)
compliant = signatures.find { |some_type| operand1.kind_of?(some_type) }
unless compliant
err = Loxxy::RuntimeError
# if signatures.size == 1
raise err, "Operand must be a #{datatype_name(signatures[0])}."
# end
end
end
private
def datatype_name(aClass)
# (?:(?:[^:](?!:|(?<=LX))))+$
aClass.name.sub(/^.+(?=::)::(?:LX)?/, '').downcase
end
end # class
end # module
end # module
Version data entries
36 entries across 36 versions & 1 rubygems