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# frozen_string_literal: true
require "tsort"
require "forwardable"
require "set"
module Bundler
class SpecSet
extend Forwardable
include TSort, Enumerable
def_delegators :@specs, :<<, :length, :add, :remove, :size, :empty?
def_delegators :sorted, :each
def initialize(specs)
@specs = specs
end
def for(dependencies, skip = [], check = false, match_current_platform = false, raise_on_missing = true)
handled = Set.new
deps = dependencies.dup
specs = []
skip += ["bundler"]
loop do
break unless dep = deps.shift
next if !handled.add?(dep) || skip.include?(dep.name)
if spec = spec_for_dependency(dep, match_current_platform)
specs << spec
spec.dependencies.each do |d|
next if d.type == :development
d = DepProxy.new(d, dep.__platform) unless match_current_platform
deps << d
end
elsif check
return false
elsif raise_on_missing
others = lookup[dep.name] if match_current_platform
message = "Unable to find a spec satisfying #{dep} in the set. Perhaps the lockfile is corrupted?"
message += " Found #{others.join(", ")} that did not match the current platform." if others && !others.empty?
raise GemNotFound, message
end
end
if spec = lookup["bundler"].first
specs << spec
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 []=(key, value)
@specs << value
@lookup = nil
@sorted = nil
value
end
def sort!
self
end
def to_a
sorted.dup
end
def to_hash
lookup.dup
end
def materialize(deps, missing_specs = nil)
materialized = self.for(deps, [], false, true, !missing_specs).to_a
deps = materialized.map(&:name).uniq
materialized.map! do |s|
next s unless s.is_a?(LazySpecification)
s.source.dependency_names = deps if s.source.respond_to?(:dependency_names=)
spec = s.__materialize__
unless spec
unless missing_specs
raise GemNotFound, "Could not find #{s.full_name} in any of the sources"
end
missing_specs << s
end
spec
end
SpecSet.new(missing_specs ? materialized.compact : materialized)
end
# Materialize for all the specs in the spec set, regardless of what platform they're for
# This is in contrast to how for does platform filtering (and specifically different from how `materialize` calls `for` only for the current platform)
# @return [Array<Gem::Specification>]
def materialized_for_all_platforms
names = @specs.map(&:name).uniq
@specs.map do |s|
next s unless s.is_a?(LazySpecification)
s.source.dependency_names = names if s.source.respond_to?(:dependency_names=)
spec = s.__materialize__
raise GemNotFound, "Could not find #{s.full_name} in any of the sources" unless spec
spec
end
end
def merge(set)
arr = sorted.dup
set.each do |set_spec|
full_name = set_spec.full_name
next if arr.any? {|spec| spec.full_name == full_name }
arr << set_spec
end
SpecSet.new(arr)
end
def find_by_name_and_platform(name, platform)
@specs.detect {|spec| spec.name == name && spec.match_platform(platform) }
end
def what_required(spec)
unless req = find {|s| s.dependencies.any? {|d| d.type == :runtime && d.name == spec.name } }
return [spec]
end
what_required(req) << spec
end
private
def sorted
rake = @specs.find {|s| s.name == "rake" }
begin
@sorted ||= ([rake] + tsort).compact.uniq
rescue TSort::Cyclic => error
cgems = extract_circular_gems(error)
raise CyclicDependencyError, "Your bundle requires gems that depend" \
" on each other, creating an infinite loop. Please remove either" \
" gem '#{cgems[1]}' or gem '#{cgems[0]}' and try again."
end
end
def extract_circular_gems(error)
if Bundler.current_ruby.mri? && Bundler.current_ruby.on_19?
error.message.scan(/(\w+) \([^)]/).flatten
else
error.message.scan(/@name="(.*?)"/).flatten
end
end
def lookup
@lookup ||= begin
lookup = Hash.new {|h, k| h[k] = [] }
Index.sort_specs(@specs).reverse_each do |s|
lookup[s.name] << s
end
lookup
end
end
def tsort_each_node
# MUST sort by name for backwards compatibility
@specs.sort_by(&:name).each {|s| yield s }
end
def spec_for_dependency(dep, match_current_platform)
specs_for_platforms = lookup[dep.name]
if match_current_platform
Bundler.rubygems.platforms.reverse_each do |pl|
match = GemHelpers.select_best_platform_match(specs_for_platforms, pl)
return match if match
end
nil
else
GemHelpers.select_best_platform_match(specs_for_platforms, dep.__platform)
end
end
def tsort_each_child(s)
s.dependencies.sort_by(&:name).each do |d|
next if d.type == :development
lookup[d.name].each {|s2| yield s2 }
end
end
end
end
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