JezK
Edit File: conflict.rb
# frozen_string_literal: true ## # Used internally to indicate that a dependency conflicted # with a spec that would be activated. class Gem::Resolver::Conflict ## # The specification that was activated prior to the conflict attr_reader :activated ## # The dependency that is in conflict with the activated gem. attr_reader :dependency attr_reader :failed_dep # :nodoc: ## # Creates a new resolver conflict when +dependency+ is in conflict with an # already +activated+ specification. def initialize(dependency, activated, failed_dep=dependency) @dependency = dependency @activated = activated @failed_dep = failed_dep end def ==(other) # :nodoc: self.class === other and @dependency == other.dependency and @activated == other.activated and @failed_dep == other.failed_dep end ## # A string explanation of the conflict. def explain "<Conflict wanted: #{@failed_dep}, had: #{activated.spec.full_name}>" end ## # Return the 2 dependency objects that conflicted def conflicting_dependencies [@failed_dep.dependency, @activated.request.dependency] end ## # Explanation of the conflict used by exceptions to print useful messages def explanation activated = @activated.spec.full_name dependency = @failed_dep.dependency requirement = dependency.requirement alternates = dependency.matching_specs.map { |spec| spec.full_name } unless alternates.empty? matching = <<-MATCHING.chomp Gems matching %s: %s MATCHING matching = matching % [ dependency, alternates.join(', '), ] end explanation = <<-EXPLANATION Activated %s which does not match conflicting dependency (%s) Conflicting dependency chains: %s versus: %s %s EXPLANATION explanation % [ activated, requirement, request_path(@activated).reverse.join(", depends on\n "), request_path(@failed_dep).reverse.join(", depends on\n "), matching, ] end ## # Returns true if the conflicting dependency's name matches +spec+. def for_spec?(spec) @dependency.name == spec.name end def pretty_print(q) # :nodoc: q.group 2, '[Dependency conflict: ', ']' do q.breakable q.text 'activated ' q.pp @activated q.breakable q.text ' dependency ' q.pp @dependency q.breakable if @dependency == @failed_dep q.text ' failed' else q.text ' failed dependency ' q.pp @failed_dep end end end ## # Path of activations from the +current+ list. def request_path(current) path = [] while current do case current when Gem::Resolver::ActivationRequest then path << "#{current.request.dependency}, #{current.spec.version} activated" current = current.parent when Gem::Resolver::DependencyRequest then path << "#{current.dependency}" current = current.requester else raise Gem::Exception, "[BUG] unknown request class #{current.class}" end end path = ['user request (gem command or Gemfile)'] if path.empty? path end ## # Return the Specification that listed the dependency def requester @failed_dep.requester end end