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class Gem::AvailableSet
include Enumerable
Tuple = Struct.new(:spec, :source)
attr_accessor :remote # :nodoc:
def initialize
@set = []
@sorted = nil
@remote = true
end
attr_reader :set
def add(spec, source)
@set << Tuple.new(spec, source)
@sorted = nil
self
end
def <<(o)
case o
when Gem::AvailableSet
s = o.set
when Array
s = o.map do |sp,so|
if !sp.kind_of?(Gem::Specification) or !so.kind_of?(Gem::Source)
raise TypeError, "Array must be in [[spec, source], ...] form"
end
Tuple.new(sp,so)
end
else
raise TypeError, "must be a Gem::AvailableSet"
end
@set += s
@sorted = nil
self
end
##
# Yields each Tuple in this AvailableSet
def each
return enum_for __method__ unless block_given?
@set.each do |tuple|
yield tuple
end
end
##
# Yields the Gem::Specification for each Tuple in this AvailableSet
def each_spec
return enum_for __method__ unless block_given?
each do |tuple|
yield tuple.spec
end
end
def empty?
@set.empty?
end
def all_specs
@set.map { |t| t.spec }
end
def match_platform!
@set.reject! { |t| !Gem::Platform.match(t.spec.platform) }
@sorted = nil
self
end
def sorted
@sorted ||= @set.sort do |a,b|
i = b.spec <=> a.spec
i != 0 ? i : (a.source <=> b.source)
end
end
def size
@set.size
end
def source_for(spec)
f = @set.find { |t| t.spec == spec }
f.source
end
##
# Converts this AvailableSet into a RequestSet that can be used to install
# gems.
#
# If +development+ is :none then no development dependencies are installed.
# Other options are :shallow for only direct development dependencies of the
# gems in this set or :all for all development dependencies.
def to_request_set development = :none
request_set = Gem::RequestSet.new
request_set.development = :all == development
each_spec do |spec|
request_set.always_install << spec
request_set.gem spec.name, spec.version
request_set.import spec.development_dependencies if
:shallow == development
end
request_set
end
##
#
# Used by the Resolver, the protocol to use a AvailableSet as a
# search Set.
def find_all(req)
dep = req.dependency
match = @set.find_all do |t|
dep.match? t.spec
end
match.map do |t|
Gem::Resolver::LocalSpecification.new(self, t.spec, t.source)
end
end
def prefetch(reqs)
end
def pick_best!
return self if empty?
@set = [sorted.first]
@sorted = nil
self
end
def remove_installed!(dep)
@set.reject! do |t|
# already locally installed
Gem::Specification.any? do |installed_spec|
dep.name == installed_spec.name and
dep.requirement.satisfied_by? installed_spec.version
end
end
@sorted = nil
self
end
def inject_into_list(dep_list)
@set.each { |t| dep_list.add t.spec }
end
end
|
