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Diffstat (limited to 'ruby_1_9_3/lib/rubygems/dependency_list.rb')
| -rw-r--r-- | ruby_1_9_3/lib/rubygems/dependency_list.rb | 252 |
1 files changed, 0 insertions, 252 deletions
diff --git a/ruby_1_9_3/lib/rubygems/dependency_list.rb b/ruby_1_9_3/lib/rubygems/dependency_list.rb deleted file mode 100644 index 9f1da9166c..0000000000 --- a/ruby_1_9_3/lib/rubygems/dependency_list.rb +++ /dev/null @@ -1,252 +0,0 @@ -#-- -# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others. -# All rights reserved. -# See LICENSE.txt for permissions. -#++ - -require 'tsort' -require 'rubygems/deprecate' - -## -# Gem::DependencyList is used for installing and uninstalling gems in the -# correct order to avoid conflicts. - -class Gem::DependencyList - attr_reader :specs - - include Enumerable - include TSort - - ## - # Allows enabling/disabling use of development dependencies - - attr_accessor :development - - ## - # Creates a DependencyList from the current specs. - - def self.from_specs - list = new - list.add(*Gem::Specification.map) - list - end - - ## - # Creates a DependencyList from a Gem::SourceIndex +source_index+ - - def self.from_source_index(ignored=nil) - warn "NOTE: DependencyList.from_source_index ignores it's arg" if ignored - - from_specs - end - - ## - # Creates a new DependencyList. If +development+ is true, development - # dependencies will be included. - - def initialize development = false - @specs = [] - - @development = development - end - - ## - # Adds +gemspecs+ to the dependency list. - - def add(*gemspecs) - @specs.push(*gemspecs) - end - - def clear - @specs.clear - end - - ## - # Return a list of the gem specifications in the dependency list, sorted in - # order so that no gemspec in the list depends on a gemspec earlier in the - # list. - # - # This is useful when removing gems from a set of installed gems. By - # removing them in the returned order, you don't get into as many dependency - # issues. - # - # If there are circular dependencies (yuck!), then gems will be returned in - # order until only the circular dependents and anything they reference are - # left. Then arbitrary gemspecs will be returned until the circular - # dependency is broken, after which gems will be returned in dependency - # order again. - - def dependency_order - sorted = strongly_connected_components.flatten - - result = [] - seen = {} - - sorted.each do |spec| - if index = seen[spec.name] then - if result[index].version < spec.version then - result[index] = spec - end - else - seen[spec.name] = result.length - result << spec - end - end - - result.reverse - end - - ## - # Iterator over dependency_order - - def each(&block) - dependency_order.each(&block) - end - - def find_name(full_name) - @specs.find { |spec| spec.full_name == full_name } - end - - def inspect # :nodoc: - "#<%s:0x%x %p>" % [self.class, object_id, map { |s| s.full_name }] - end - - ## - # Are all the dependencies in the list satisfied? - - def ok? - why_not_ok?(:quick).empty? - end - - def why_not_ok? quick = false - unsatisfied = Hash.new { |h,k| h[k] = [] } - each do |spec| - spec.runtime_dependencies.each do |dep| - inst = Gem::Specification.any? { |installed_spec| - dep.name == installed_spec.name and - dep.requirement.satisfied_by? installed_spec.version - } - - unless inst or @specs.find { |s| s.satisfies_requirement? dep } then - unsatisfied[spec.name] << dep - return unsatisfied if quick - end - end - end - - unsatisfied - end - - ## - # Is is ok to remove a gemspec from the dependency list? - # - # If removing the gemspec creates breaks a currently ok dependency, then it - # is NOT ok to remove the gemspec. - - def ok_to_remove?(full_name) - gem_to_remove = find_name full_name - - siblings = @specs.find_all { |s| - s.name == gem_to_remove.name && - s.full_name != gem_to_remove.full_name - } - - deps = [] - - @specs.each do |spec| - spec.dependencies.each do |dep| - deps << dep if gem_to_remove.satisfies_requirement?(dep) - end - end - - deps.all? { |dep| - siblings.any? { |s| - s.satisfies_requirement? dep - } - } - end - - ## - # Remove everything in the DependencyList that matches but doesn't - # satisfy items in +dependencies+ (a hash of gem names to arrays of - # dependencies). - - def remove_specs_unsatisfied_by dependencies - specs.reject! { |spec| - dep = dependencies[spec.name] - dep and not dep.requirement.satisfied_by? spec.version - } - end - - ## - # Removes the gemspec matching +full_name+ from the dependency list - - def remove_by_name(full_name) - @specs.delete_if { |spec| spec.full_name == full_name } - end - - ## - # Return a hash of predecessors. <tt>result[spec]</tt> is an Array of - # gemspecs that have a dependency satisfied by the named gemspec. - - def spec_predecessors - result = Hash.new { |h,k| h[k] = [] } - - specs = @specs.sort.reverse - - specs.each do |spec| - specs.each do |other| - next if spec == other - - other.dependencies.each do |dep| - if spec.satisfies_requirement? dep then - result[spec] << other - end - end - end - end - - result - end - - def tsort_each_node(&block) - @specs.each(&block) - end - - def tsort_each_child(node, &block) - specs = @specs.sort.reverse - - dependencies = node.runtime_dependencies - dependencies.push(*node.development_dependencies) if @development - - dependencies.each do |dep| - specs.each do |spec| - if spec.satisfies_requirement? dep then - begin - yield spec - rescue TSort::Cyclic - # do nothing - end - break - end - end - end - end - - private - - ## - # Count the number of gemspecs in the list +specs+ that are not in - # +ignored+. - - def active_count(specs, ignored) - specs.count { |spec| ignored[spec.full_name].nil? } - end -end - -class Gem::DependencyList - class << self - extend Gem::Deprecate - deprecate :from_source_index, "from_specs", 2011, 11 - end -end |