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activation_request.rb

# frozen_string_literal: true

##
# Specifies a Specification object that should be activated.  Also contains a
# dependency that was used to introduce this activation.

class Gem::Resolver::ActivationRequest
  ##
  # The parent request for this activation request.

attr_reader :request

##
  # The specification to be activated.

attr_reader :spec

##
  # Creates a new ActivationRequest that will activate +spec+.  The parent
  # +request+ is used to provide diagnostics in case of conflicts.

def initialize(spec, request)
    @spec = spec
    @request = request
  end

def ==(other) # :nodoc:
    case other
    when Gem::Specification
      @spec == other
    when Gem::Resolver::ActivationRequest
      @spec == other.spec
    else
      false
    end
  end

def eql?(other)
    self == other
  end

def hash
    @spec.hash
  end

##
  # Is this activation request for a development dependency?

def development?
    @request.development?
  end

##
  # Downloads a gem at +path+ and returns the file path.

def download(path)
    Gem.ensure_gem_subdirectories path

if @spec.respond_to? :sources
      exception = nil
      path = @spec.sources.find do |source|
        begin
          source.download full_spec, path
        rescue exception
        end
      end
      return path      if path
      raise  exception if exception

elsif @spec.respond_to? :source
      source = @spec.source
      source.download full_spec, path

else
      source = Gem.sources.first
      source.download full_spec, path
    end
  end

##
  # The full name of the specification to be activated.

def full_name
    name_tuple.full_name
  end

alias_method :to_s, :full_name

##
  # The Gem::Specification for this activation request.

def full_spec
    Gem::Specification === @spec ? @spec : @spec.spec
  end

def inspect # :nodoc:
    "#<%s for %p from %s>" % [
      self.class, @spec, @request
    ]
  end

##
  # True if the requested gem has already been installed.

def installed?
    case @spec
    when Gem::Resolver::VendorSpecification then
      true
    else
      this_spec = full_spec

Gem::Specification.any? do |s|
        s == this_spec
      end
    end
  end

##
  # The name of this activation request's specification

def name
    @spec.name
  end

##
  # Return the ActivationRequest that contained the dependency
  # that we were activated for.

def parent
    @request.requester
  end

def pretty_print(q) # :nodoc:
    q.group 2, "[Activation request", "]" do
      q.breakable
      q.pp @spec

q.breakable
      q.text " for "
      q.pp @request
    end
  end

##
  # The version of this activation request's specification

def version
    @spec.version
  end

##
  # The platform of this activation request's specification

def platform
    @spec.platform
  end

private

def name_tuple
    @name_tuple ||= Gem::NameTuple.new(name, version, platform)
  end
end

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