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Edit File : conflict.rb \| Size : 3.19 KB
# 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 && @dependency == other.dependency && @activated == other.activated && @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(&:full_name) unless alternates.empty? matching = <<-MATCHING.chomp Gems matching %s: %s MATCHING matching = format(matching, dependency, alternates.join(", ")) end explanation = <<-EXPLANATION Activated %s which does not match conflicting dependency (%s) Conflicting dependency chains: %s versus: %s %s EXPLANATION format(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.to_s 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 Back

Edit File : conflict.rb | Size : 3.19 KB

# 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 &&
      @dependency == other.dependency &&
      @activated  == other.activated  &&
      @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(&:full_name)

unless alternates.empty?
      matching = <<-MATCHING.chomp

Gems matching %s:
    %s
      MATCHING

matching = format(matching, dependency, alternates.join(", "))
    end

explanation = <<-EXPLANATION
  Activated %s
  which does not match conflicting dependency (%s)

Conflicting dependency chains:
    %s

versus:
    %s
%s
    EXPLANATION

format(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.to_s

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

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