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|
# frozen_string_literal: true
require_relative "spec_group"
module Bundler
class Resolver
#
# This class is a PubGrub compatible "Version" class that takes Bundler
# resolution complexities into account.
#
# Each Resolver::Candidate has a underlying `Gem::Version` plus a set of
# platforms. For example, 1.1.0-x86_64-linux is a different resolution candidate
# from 1.1.0 (generic). This is because different platform variants of the
# same gem version can bring different dependencies, so they need to be
# considered separately.
#
# Some candidates may also keep some information explicitly about the
# package the refer to. These candidates are referred to as "canonical" and
# are used when materializing resolution results back into RubyGems
# specifications that can be installed, written to lock files, and so on.
#
class Candidate
include Comparable
attr_reader :version
def initialize(version, specs: [])
@spec_group = Resolver::SpecGroup.new(specs)
@version = Gem::Version.new(version)
@ruby_only = specs.map(&:platform).uniq == [Gem::Platform::RUBY]
end
def dependencies
@spec_group.dependencies
end
def to_specs(package)
return [] if package.meta?
@spec_group.to_specs(package.force_ruby_platform?)
end
def generic!
@ruby_only = true
self
end
def platform_specific!
@ruby_only = false
self
end
def prerelease?
@version.prerelease?
end
def segments
@version.segments
end
def sort_obj
[@version, @ruby_only ? -1 : 1]
end
def <=>(other)
return unless other.is_a?(self.class)
sort_obj <=> other.sort_obj
end
def ==(other)
return unless other.is_a?(self.class)
sort_obj == other.sort_obj
end
def eql?(other)
return unless other.is_a?(self.class)
sort_obj.eql?(other.sort_obj)
end
def hash
sort_obj.hash
end
def to_s
@version.to_s
end
end
end
end
|
