module Semverse
  class SemverseError < StandardError; end

  class InvalidVersionFormat < SemverseError
    attr_reader :version

    # @param [#to_s] version
    def initialize(version)
      @version = version
    end

    def to_s
      "'#{version}' did not contain a valid version string: 'x.y.z' or 'x.y'."
    end
  end

  class InvalidConstraintFormat < SemverseError
    attr_reader :constraint

    # @param [#to_s] constraint
    def initialize(constraint)
      @constraint = constraint
    end

    def to_s
      "'#{constraint}' did not contain a valid operator or a valid version string."
    end
  end

  class NoSolutionError < SemverseError; end
end