# File lib/bundler/resolver.rb, line 26 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? @use_gvp = Bundler.feature_flag.use_gem_version_promoter_for_major_updates? || !@gem_version_promoter.major? end
# File lib/bundler/resolver.rb, line 222 def self.platform_sort_key(platform) return ["", "", ""] if Gem::Platform::RUBY == platform platform.to_a.map {|part| part || "" } end
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.
*dependencies<Gem::Dependency> |
The list of dependencies to resolve |
<GemBundle>,nil |
If the list of dependencies can be resolved, a |
collection of gemspecs is returned. Otherwise, nil is returned.
# File lib/bundler/resolver.rb, line 18 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
# File lib/bundler/resolver.rb, line 87 def after_resolution Bundler.ui.info "" end
# File lib/bundler/resolver.rb, line 83 def before_resolution Bundler.ui.info "Resolving dependencies...", debug? end
Conveys debug information to the user.
@param [Integer] depth the current depth of the resolution process. @return [void]
# File lib/bundler/resolver.rb, line 71 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
# File lib/bundler/resolver.rb, line 78 def debug? return @debug_mode if defined?(@debug_mode) @debug_mode = ENV["DEBUG_RESOLVER"] || ENV["DEBUG_RESOLVER_TREE"] || false end
# File lib/bundler/resolver.rb, line 97 def dependencies_for(specification) specification.dependencies_for_activated_platforms end
# File lib/bundler/resolver.rb, line 149 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
# File lib/bundler/resolver.rb, line 91 def indicate_progress Bundler.ui.info ".", false unless debug? end
# File lib/bundler/resolver.rb, line 166 def name_for(dependency) dependency.name end
# File lib/bundler/resolver.rb, line 170 def name_for_explicit_dependency_source Bundler.default_gemfile.basename.to_s rescue "Gemfile" end
# File lib/bundler/resolver.rb, line 176 def name_for_locking_dependency_source Bundler.default_lockfile.basename.to_s rescue "Gemfile.lock" end
# File lib/bundler/resolver.rb, line 188 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
# File lib/bundler/resolver.rb, line 182 def requirement_satisfied_by?(requirement, activated, spec) return false unless requirement.matches_spec?(spec) || spec.source.is_a?(Source::Gemspec) spec.activate_platform!(requirement.__platform) if !@platforms || @platforms.include?(requirement.__platform) true end
# File lib/bundler/resolver.rb, line 101 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]) if vertex = @base_dg.vertex_named(dependency.name) locked_requirement = vertex.payload.requirement end if !@prerelease_specified[dependency.name] && (!@use_gvp || locked_requirement.nil?) # 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 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 !@use_gvp 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
# File lib/bundler/resolver.rb, line 198 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
# File lib/bundler/resolver.rb, line 45 def start(requirements) @gem_version_promoter.prerelease_specified = @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?("\00"") }. 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
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