class Bundler::SourceMap

def all_requirements
  requirements = direct_requirements.dup
  unmet_deps = sources.non_default_explicit_sources.map do |source|
    (source.spec_names - pinned_spec_names).each do |indirect_dependency_name|
      previous_source = requirements[indirect_dependency_name]
      if previous_source.nil?
        requirements[indirect_dependency_name] = source
      else
        no_ambiguous_sources = Bundler.feature_flag.bundler_3_mode?
        msg = ["The gem '#{indirect_dependency_name}' was found in multiple relevant sources."]
        msg.concat [previous_source, source].map {|s| "  * #{s}" }.sort
        msg << "You #{no_ambiguous_sources ? :must : :should} add this gem to the source block for the source you wish it to be installed from."
        msg = msg.join("\n")
        raise SecurityError, msg if no_ambiguous_sources
        Bundler.ui.warn "Warning: #{msg}"
      end
    end
    source.unmet_deps
  end
  sources.default_source.add_dependency_names(unmet_deps.flatten - requirements.keys)
  requirements
end

def direct_requirements
  @direct_requirements ||= begin
    requirements = {}
    default = sources.default_source
    dependencies.each do |dep|
      dep_source = dep.source || default
      dep_source.add_dependency_names(dep.name)
      requirements[dep.name] = dep_source
    end
    requirements
  end
end

def initialize(sources, dependencies, locked_specs)
  @sources = sources
  @dependencies = dependencies
  @locked_specs = locked_specs
end

def locked_requirements
  @locked_requirements ||= begin
    requirements = {}
    locked_specs.each do |locked_spec|
      source = locked_spec.source
      source.add_dependency_names(locked_spec.name)
      requirements[locked_spec.name] = source
    end
    requirements
  end
end

def pinned_spec_names(skip = nil)
  direct_requirements.reject {|_, source| source == skip }.keys
end