Postponing the Bundler merge.

  I faced a big issue about Bundler with ruby core.
  I have no time to resolve it issue before 2.5 final release.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61416 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 0 insertions, 372 deletions

diff --git a/lib/bundler/resolver.rb b/lib/bundler/resolver.rb
deleted file mode 100644
index 052d776183..0000000000
--- a/lib/bundler/resolver.rb
+++ /dev/null
@@ -1,372 +0,0 @@
-# frozen_string_literal: true
-
-module Bundler
-  class Resolver
-    require "bundler/vendored_molinillo"
-    require "bundler/resolver/spec_group"
-
-    # Figures out the best possible configuration of gems that satisfies
-    # the list of passed dependencies and any child dependencies without
-    # causing any gem activation errors.
-    #
-    # ==== Parameters
-    # *dependencies<Gem::Dependency>:: The list of dependencies to resolve
-    #
-    # ==== Returns
-    # <GemBundle>,nil:: If the list of dependencies can be resolved, a
-    #   collection of gemspecs is returned. Otherwise, nil is returned.
-    def self.resolve(requirements, index, source_requirements = {}, base = [], gem_version_promoter = GemVersionPromoter.new, additional_base_requirements = [], platforms = nil)
-      platforms = Set.new(platforms) if platforms
-      base = SpecSet.new(base) unless base.is_a?(SpecSet)
-      resolver = new(index, source_requirements, base, gem_version_promoter, additional_base_requirements, platforms)
-      result = resolver.start(requirements)
-      SpecSet.new(result)
-    end
-
-    def initialize(index, source_requirements, base, gem_version_promoter, additional_base_requirements, platforms)
-      @index = index
-      @source_requirements = source_requirements
-      @base = base
-      @resolver = Molinillo::Resolver.new(self, self)
-      @search_for = {}
-      @base_dg = Molinillo::DependencyGraph.new
-      @base.each do |ls|
-        dep = Dependency.new(ls.name, ls.version)
-        @base_dg.add_vertex(ls.name, DepProxy.new(dep, ls.platform), true)
-      end
-      additional_base_requirements.each {|d| @base_dg.add_vertex(d.name, d) }
-      @platforms = platforms
-      @gem_version_promoter = gem_version_promoter
-      @allow_bundler_dependency_conflicts = Bundler.feature_flag.allow_bundler_dependency_conflicts?
-      @lockfile_uses_separate_rubygems_sources = Bundler.feature_flag.lockfile_uses_separate_rubygems_sources?
-    end
-
-    def start(requirements)
-      @prerelease_specified = {}
-      requirements.each {|dep| @prerelease_specified[dep.name] ||= dep.prerelease? }
-
-      verify_gemfile_dependencies_are_found!(requirements)
-      dg = @resolver.resolve(requirements, @base_dg)
-      dg.map(&:payload).
-        reject {|sg| sg.name.end_with?("\0") }.
-        map(&:to_specs).flatten
-    rescue Molinillo::VersionConflict => e
-      message = version_conflict_message(e)
-      raise VersionConflict.new(e.conflicts.keys.uniq, message)
-    rescue Molinillo::CircularDependencyError => e
-      names = e.dependencies.sort_by(&:name).map {|d| "gem '#{d.name}'" }
-      raise CyclicDependencyError, "Your bundle requires gems that depend" \
-        " on each other, creating an infinite loop. Please remove" \
-        " #{names.count > 1 ? "either " : ""}#{names.join(" or ")}" \
-        " and try again."
-    end
-
-    include Molinillo::UI
-
-    # Conveys debug information to the user.
-    #
-    # @param [Integer] depth the current depth of the resolution process.
-    # @return [void]
-    def debug(depth = 0)
-      return unless debug?
-      debug_info = yield
-      debug_info = debug_info.inspect unless debug_info.is_a?(String)
-      STDERR.puts debug_info.split("\n").map {|s| "  " * depth + s }
-    end
-
-    def debug?
-      return @debug_mode if defined?(@debug_mode)
-      @debug_mode = ENV["DEBUG_RESOLVER"] || ENV["DEBUG_RESOLVER_TREE"] || false
-    end
-
-    def before_resolution
-      Bundler.ui.info "Resolving dependencies...", debug?
-    end
-
-    def after_resolution
-      Bundler.ui.info ""
-    end
-
-    def indicate_progress
-      Bundler.ui.info ".", false unless debug?
-    end
-
-    include Molinillo::SpecificationProvider
-
-    def dependencies_for(specification)
-      specification.dependencies_for_activated_platforms
-    end
-
-    def search_for(dependency)
-      platform = dependency.__platform
-      dependency = dependency.dep unless dependency.is_a? Gem::Dependency
-      search = @search_for[dependency] ||= begin
-        index = index_for(dependency)
-        results = index.search(dependency, @base[dependency.name])
-
-        unless @prerelease_specified[dependency.name]
-          # Move prereleases to the beginning of the list, so they're considered
-          # last during resolution.
-          pre, results = results.partition {|spec| spec.version.prerelease? }
-          results = pre + results
-        end
-
-        if vertex = @base_dg.vertex_named(dependency.name)
-          locked_requirement = vertex.payload.requirement
-        end
-        spec_groups = if results.any?
-          nested = []
-          results.each do |spec|
-            version, specs = nested.last
-            if version == spec.version
-              specs << spec
-            else
-              nested << [spec.version, [spec]]
-            end
-          end
-          nested.reduce([]) do |groups, (version, specs)|
-            next groups if locked_requirement && !locked_requirement.satisfied_by?(version)
-            spec_group = SpecGroup.new(specs)
-            spec_group.ignores_bundler_dependencies = @allow_bundler_dependency_conflicts
-            groups << spec_group
-          end
-        else
-          []
-        end
-        # GVP handles major itself, but it's still a bit risky to trust it with it
-        # until we get it settled with new behavior. For 2.x it can take over all cases.
-        if @gem_version_promoter.major?
-          spec_groups
-        else
-          @gem_version_promoter.sort_versions(dependency, spec_groups)
-        end
-      end
-      search.select {|sg| sg.for?(platform) }.each {|sg| sg.activate_platform!(platform) }
-    end
-
-    def index_for(dependency)
-      source = @source_requirements[dependency.name]
-      if source
-        source.specs
-      elsif @lockfile_uses_separate_rubygems_sources
-        Index.build do |idx|
-          if dependency.all_sources
-            dependency.all_sources.each {|s| idx.add_source(s.specs) if s }
-          else
-            idx.add_source @source_requirements[:default].specs
-          end
-        end
-      else
-        @index
-      end
-    end
-
-    def name_for(dependency)
-      dependency.name
-    end
-
-    def name_for_explicit_dependency_source
-      Bundler.default_gemfile.basename.to_s
-    rescue
-      "Gemfile"
-    end
-
-    def name_for_locking_dependency_source
-      Bundler.default_lockfile.basename.to_s
-    rescue
-      "Gemfile.lock"
-    end
-
-    def requirement_satisfied_by?(requirement, activated, spec)
-      return false unless requirement.matches_spec?(spec) || spec.source.is_a?(Source::Gemspec)
-      if spec.version.prerelease? && !requirement.prerelease? && search_for(requirement).any? {|sg| !sg.version.prerelease? }
-        vertex = activated.vertex_named(spec.name)
-        return false if vertex.requirements.none?(&:prerelease?)
-      end
-      spec.activate_platform!(requirement.__platform) if !@platforms || @platforms.include?(requirement.__platform)
-      true
-    end
-
-    def relevant_sources_for_vertex(vertex)
-      if vertex.root?
-        [@source_requirements[vertex.name]]
-      elsif @lockfile_uses_separate_rubygems_sources
-        vertex.recursive_predecessors.map do |v|
-          @source_requirements[v.name]
-        end << @source_requirements[:default]
-      end
-    end
-
-    def sort_dependencies(dependencies, activated, conflicts)
-      dependencies.sort_by do |dependency|
-        dependency.all_sources = relevant_sources_for_vertex(activated.vertex_named(dependency.name))
-        name = name_for(dependency)
-        vertex = activated.vertex_named(name)
-        [
-          @base_dg.vertex_named(name) ? 0 : 1,
-          vertex.payload ? 0 : 1,
-          vertex.root? ? 0 : 1,
-          amount_constrained(dependency),
-          conflicts[name] ? 0 : 1,
-          vertex.payload ? 0 : search_for(dependency).count,
-          self.class.platform_sort_key(dependency.__platform),
-        ]
-      end
-    end
-
-    # Sort platforms from most general to most specific
-    def self.sort_platforms(platforms)
-      platforms.sort_by do |platform|
-        platform_sort_key(platform)
-      end
-    end
-
-    def self.platform_sort_key(platform)
-      return ["", "", ""] if Gem::Platform::RUBY == platform
-      platform.to_a.map {|part| part || "" }
-    end
-
-  private
-
-    # returns an integer \in (-\infty, 0]
-    # a number closer to 0 means the dependency is less constraining
-    #
-    # dependencies w/ 0 or 1 possibilities (ignoring version requirements)
-    # are given very negative values, so they _always_ sort first,
-    # before dependencies that are unconstrained
-    def amount_constrained(dependency)
-      @amount_constrained ||= {}
-      @amount_constrained[dependency.name] ||= begin
-        if (base = @base[dependency.name]) && !base.empty?
-          dependency.requirement.satisfied_by?(base.first.version) ? 0 : 1
-        else
-          all = index_for(dependency).search(dependency.name).size
-
-          if all <= 1
-            all - 1_000_000
-          else
-            search = search_for(dependency)
-            search = @prerelease_specified[dependency.name] ? search.count : search.count {|s| !s.version.prerelease? }
-            search - all
-          end
-        end
-      end
-    end
-
-    def verify_gemfile_dependencies_are_found!(requirements)
-      requirements.each do |requirement|
-        name = requirement.name
-        next if name == "bundler"
-        next unless search_for(requirement).empty?
-
-        cache_message = begin
-                            " or in gems cached in #{Bundler.settings.app_cache_path}" if Bundler.app_cache.exist?
-                          rescue GemfileNotFound
-                            nil
-                          end
-
-        if (base = @base[name]) && !base.empty?
-          version = base.first.version
-          message = "You have requested:\n" \
-            "  #{name} #{requirement.requirement}\n\n" \
-            "The bundle currently has #{name} locked at #{version}.\n" \
-            "Try running `bundle update #{name}`\n\n" \
-            "If you are updating multiple gems in your Gemfile at once,\n" \
-            "try passing them all to `bundle update`"
-        elsif source = @source_requirements[name]
-          specs = source.specs[name]
-          versions_with_platforms = specs.map {|s| [s.version, s.platform] }
-          message = String.new("Could not find gem '#{SharedHelpers.pretty_dependency(requirement)}' in #{source}#{cache_message}.\n")
-          message << if versions_with_platforms.any?
-                       "The source contains '#{name}' at: #{formatted_versions_with_platforms(versions_with_platforms)}"
-                     else
-                       "The source does not contain any versions of '#{name}'"
-                     end
-        else
-          message = "Could not find gem '#{requirement}' in any of the gem sources " \
-            "listed in your Gemfile#{cache_message}."
-        end
-        raise GemNotFound, message
-      end
-    end
-
-    def formatted_versions_with_platforms(versions_with_platforms)
-      version_platform_strs = versions_with_platforms.map do |vwp|
-        version = vwp.first
-        platform = vwp.last
-        version_platform_str = String.new(version.to_s)
-        version_platform_str << " #{platform}" unless platform.nil? || platform == Gem::Platform::RUBY
-        version_platform_str
-      end
-      version_platform_strs.join(", ")
-    end
-
-    def version_conflict_message(e)
-      e.message_with_trees(
-        :solver_name => "Bundler",
-        :possibility_type => "gem",
-        :reduce_trees => lambda do |trees|
-          # bail out if tree size is too big for Array#combination to make any sense
-          return trees if trees.size > 15
-          maximal = 1.upto(trees.size).map do |size|
-            trees.map(&:last).flatten(1).combination(size).to_a
-          end.flatten(1).select do |deps|
-            Bundler::VersionRanges.empty?(*Bundler::VersionRanges.for_many(deps.map(&:requirement)))
-          end.min_by(&:size)
-          trees.reject! {|t| !maximal.include?(t.last) } if maximal
-
-          trees = trees.sort_by {|t| t.flatten.map(&:to_s) }
-          trees.uniq! {|t| t.flatten.map {|dep| [dep.name, dep.requirement] } }
-
-          trees.sort_by {|t| t.reverse.map(&:name) }
-        end,
-        :printable_requirement => lambda {|req| SharedHelpers.pretty_dependency(req) },
-        :additional_message_for_conflict => lambda do |o, name, conflict|
-          if name == "bundler"
-            o << %(\n  Current Bundler version:\n    bundler (#{Bundler::VERSION}))
-            other_bundler_required = !conflict.requirement.requirement.satisfied_by?(Gem::Version.new Bundler::VERSION)
-          end
-
-          if name == "bundler" && other_bundler_required
-            o << "\n"
-            o << "This Gemfile requires a different version of Bundler.\n"
-            o << "Perhaps you need to update Bundler by running `gem install bundler`?\n"
-          end
-          if conflict.locked_requirement
-            o << "\n"
-            o << %(Running `bundle update` will rebuild your snapshot from scratch, using only\n)
-            o << %(the gems in your Gemfile, which may resolve the conflict.\n)
-          elsif !conflict.existing
-            o << "\n"
-
-            relevant_sources = if conflict.requirement.source
-              [conflict.requirement.source]
-            elsif conflict.requirement.all_sources
-              conflict.requirement.all_sources
-            elsif @lockfile_uses_separate_rubygems_sources
-              # every conflict should have an explicit group of sources when we
-              # enforce strict pinning
-              raise "no source set for #{conflict}"
-            else
-              []
-            end.compact.map(&:to_s).uniq.sort
-
-            o << "Could not find gem '#{SharedHelpers.pretty_dependency(conflict.requirement)}'"
-            if conflict.requirement_trees.first.size > 1
-              o << ", which is required by "
-              o << "gem '#{SharedHelpers.pretty_dependency(conflict.requirement_trees.first[-2])}',"
-            end
-            o << " "
-
-            o << if relevant_sources.empty?
-                   "in any of the sources.\n"
-                 else
-                   "in any of the relevant sources:\n  #{relevant_sources * "\n  "}\n"
-                 end
-          end
-        end,
-        :version_for_spec => lambda {|spec| spec.version }
-      )
-    end
-  end
-end