106 lines
2.0 KiB
Ruby
106 lines
2.0 KiB
Ruby
# typed: true
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# frozen_string_literal: true
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require "singleton"
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class Version
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# A pseudo-version representing the absence of a version.
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#
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# @api private
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class NullVersion < Version
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extend T::Sig
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include Comparable
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include Singleton
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sig { override.params(_other: T.untyped).returns(Integer) }
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def <=>(_other)
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-1
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end
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sig { override.params(_other: T.untyped).returns(T::Boolean) }
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def eql?(_other)
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# Makes sure that the same instance of Version::NULL
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# will never equal itself; normally Comparable#==
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# will return true for this regardless of the return
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# value of #<=>
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false
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end
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sig { override.returns(T::Boolean) }
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def detected_from_url?
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false
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end
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sig { override.returns(T::Boolean) }
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def head?
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false
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end
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sig { override.returns(T::Boolean) }
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def null?
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true
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end
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# For {OS::Mac::Version} compatibility.
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sig { returns(T::Boolean) }
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def requires_nehalem_cpu?
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false
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end
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alias requires_sse4? requires_nehalem_cpu?
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alias requires_sse41? requires_nehalem_cpu?
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alias requires_sse42? requires_nehalem_cpu?
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alias requires_popcnt? requires_nehalem_cpu?
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sig { override.returns(Token) }
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def major
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NULL_TOKEN
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end
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sig { override.returns(Token) }
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def minor
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NULL_TOKEN
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end
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sig { override.returns(Token) }
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def patch
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NULL_TOKEN
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end
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sig { override.returns(Version) }
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def major_minor
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self
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end
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sig { override.returns(Version) }
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def major_minor_patch
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self
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end
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sig { override.returns(Float) }
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def to_f
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Float::NAN
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end
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sig { override.returns(Integer) }
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def to_i
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0
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end
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sig { override.returns(String) }
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def to_s
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""
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end
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alias to_str to_s
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sig { override.returns(String) }
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def inspect
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"#<Version::NULL>"
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end
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end
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private_constant :NullVersion
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# Represents the absence of a version.
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NULL = NullVersion.instance.freeze
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end
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