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require 'tsort'
module Bundler
class SpecSet
include TSort, Enumerable
def initialize(specs)
@specs = specs.sort_by { |s| s.name }
end
def each
sorted.each { |s| yield s }
end
def length
@specs.length
end
def for(dependencies, skip = [], check = false)
handled, deps, specs = {}, dependencies.dup, []
until deps.empty?
dep = deps.shift
next if handled[dep] || skip.include?(dep.name)
spec = lookup[dep.name].find do |s|
s.match_platform(dep.__platform)
end
handled[dep] = true
if spec
specs << spec
spec.dependencies.each do |d|
next if d.type == :development
deps << DepProxy.new(d, dep.__platform)
end
elsif check
return false
end
end
check ? true : SpecSet.new(specs)
end
def valid_for?(deps)
self.for(deps, [], true)
end
def [](key)
key = key.name if key.respond_to?(:name)
lookup[key].reverse
end
def to_a
sorted.dup
end
def to_hash
lookup.dup
end
def materialize(type, deps)
materialized = self.for(deps, []).to_a
materialized.map! do |s|
next s unless s.is_a?(LazySpecification)
s.__materialize__(s.source.send(type))
end
SpecSet.new(materialized)
end
def names
lookup.keys
end
def select!(names)
@lookup = nil
@sorted = nil
@specs.delete_if { |s| !names.include?(s.name) }
self
end
private
def sorted
rake = @specs.find { |s| s.name == 'rake' }
@sorted ||= ([rake] + tsort).compact.uniq
end
def lookup
@lookup ||= begin
lookup = Hash.new { |h,k| h[k] = [] }
specs = @specs.sort_by do |s|
s.platform.to_s == 'ruby' ? "\0" : s.platform.to_s
end
specs.reverse_each do |s|
lookup[s.name] << s
end
lookup
end
end
def tsort_each_node
@specs.each { |s| yield s }
end
def tsort_each_child(s)
s.dependencies.sort_by { |d| d.name }.each do |d|
next if d.type == :development
lookup[d.name].each { |s| yield s }
end
end
end
end
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