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##
# 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.
#
# +others_possible+ indicates that other specifications may also match this
# activation request.
def initialize spec, request, others_possible = true
@spec = spec
@request = request
@others_possible = others_possible
end
def == other # :nodoc:
case other
when Gem::Specification
@spec == other
when Gem::Resolver::ActivationRequest
@spec == other.spec && @request == other.request
else
false
end
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
if @spec.respond_to? :source
source = @spec.source
else
source = Gem.sources.first
end
Gem.ensure_gem_subdirectories path
source.download full_spec, path
end
##
# The full name of the specification to be activated.
def full_name
@spec.full_name
end
##
# The Gem::Specification for this activation request.
def full_spec
Gem::Specification === @spec ? @spec : @spec.spec
end
def inspect # :nodoc:
others =
case @others_possible
when true then # TODO remove at RubyGems 3
' (others possible)'
when false then # TODO remove at RubyGems 3
nil
else
unless @others_possible.empty? then
others = @others_possible.map { |s| s.full_name }
" (others possible: #{others.join ', '})"
end
end
'#<%s for %p from %s%s>' % [
self.class, @spec, @request, others
]
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
##
# Indicate if this activation is one of a set of possible
# requests for the same Dependency request.
def others_possible?
case @others_possible
when true, false then
@others_possible
else
not @others_possible.empty?
end
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
case @others_possible
when false then
when true then
q.breakable
q.text 'others possible'
else
unless @others_possible.empty? then
q.breakable
q.text 'others '
q.pp @others_possible.map { |s| s.full_name }
end
end
end
end
##
# The version of this activation request's specification
def version
@spec.version
end
end
|
