module Gem::Deprecate

Provides a single method deprecate to be used to declare when something is going away.

class Legacy
  def self.klass_method
    # ...
  end

  def instance_method
    # ...
  end

  extend Gem::Deprecate
  deprecate :instance_method, "X.z", 2011, 4

  class << self
    extend Gem::Deprecate
    deprecate :klass_method, :none, 2011, 4
  end
end

Public Class Methods

rubygems_deprecate(name, replacement=:none) click to toggle source

Simple deprecation method that deprecates name by wrapping it up in a dummy method. It warns on each call to the dummy method telling the user of repl (unless repl is :none) and the Rubygems version that it is planned to go away.

# File lib/rubygems/deprecate.rb, line 78
def rubygems_deprecate(name, replacement=:none)
  class_eval do
    old = "_deprecated_#{name}"
    alias_method old, name
    define_method name do |*args, &block|
      klass = self.kind_of? Module
      target = klass ? "#{self}." : "#{self.class}#"
      msg = [ "NOTE: #{target}#{name} is deprecated",
              replacement == :none ? " with no replacement" : "; use #{replacement} instead",
              ". It will be removed in Rubygems #{Gem::Deprecate.next_rubygems_major_version}",
              "\n#{target}#{name} called from #{Gem.location_of_caller.join(":")}",
      ]
      warn "#{msg.join}." unless Gem::Deprecate.skip
      send old, *args, &block
    end
  end
end
rubygems_deprecate_command() click to toggle source

Deprecation method to deprecate Rubygems commands

# File lib/rubygems/deprecate.rb, line 97
def rubygems_deprecate_command
  class_eval do
    define_method "deprecated?" do
      true
    end

    define_method "deprecation_warning" do
      msg = [ "#{self.command} command is deprecated",
              ". It will be removed in Rubygems #{Gem::Deprecate.next_rubygems_major_version}.\n",
      ]

      alert_warning "#{msg.join}" unless Gem::Deprecate.skip
    end
  end
end
skip_during() { || ... } click to toggle source

Temporarily turn off warnings. Intended for tests only.

# File lib/rubygems/deprecate.rb, line 37
def skip_during
  Gem::Deprecate.skip, original = true, Gem::Deprecate.skip
  yield
ensure
  Gem::Deprecate.skip = original
end

Public Instance Methods

deprecate(name, repl, year, month) click to toggle source

Simple deprecation method that deprecates name by wrapping it up in a dummy method. It warns on each call to the dummy method telling the user of repl (unless repl is :none) and the year/month that it is planned to go away.

# File lib/rubygems/deprecate.rb, line 54
def deprecate(name, repl, year, month)
  class_eval do
    old = "_deprecated_#{name}"
    alias_method old, name
    define_method name do |*args, &block|
      klass = self.kind_of? Module
      target = klass ? "#{self}." : "#{self.class}#"
      msg = [ "NOTE: #{target}#{name} is deprecated",
              repl == :none ? " with no replacement" : "; use #{repl} instead",
              ". It will be removed on or after %4d-%02d-01." % [year, month],
              "\n#{target}#{name} called from #{Gem.location_of_caller.join(":")}",
      ]
      warn "#{msg.join}." unless Gem::Deprecate.skip
      send old, *args, &block
    end
  end
end

Private Instance Methods

rubygems_deprecate(name, replacement=:none) click to toggle source

Simple deprecation method that deprecates name by wrapping it up in a dummy method. It warns on each call to the dummy method telling the user of repl (unless repl is :none) and the Rubygems version that it is planned to go away.

# File lib/rubygems/deprecate.rb, line 78
def rubygems_deprecate(name, replacement=:none)
  class_eval do
    old = "_deprecated_#{name}"
    alias_method old, name
    define_method name do |*args, &block|
      klass = self.kind_of? Module
      target = klass ? "#{self}." : "#{self.class}#"
      msg = [ "NOTE: #{target}#{name} is deprecated",
              replacement == :none ? " with no replacement" : "; use #{replacement} instead",
              ". It will be removed in Rubygems #{Gem::Deprecate.next_rubygems_major_version}",
              "\n#{target}#{name} called from #{Gem.location_of_caller.join(":")}",
      ]
      warn "#{msg.join}." unless Gem::Deprecate.skip
      send old, *args, &block
    end
  end
end
rubygems_deprecate_command() click to toggle source

Deprecation method to deprecate Rubygems commands

# File lib/rubygems/deprecate.rb, line 97
def rubygems_deprecate_command
  class_eval do
    define_method "deprecated?" do
      true
    end

    define_method "deprecation_warning" do
      msg = [ "#{self.command} command is deprecated",
              ". It will be removed in Rubygems #{Gem::Deprecate.next_rubygems_major_version}.\n",
      ]

      alert_warning "#{msg.join}" unless Gem::Deprecate.skip
    end
  end
end
skip_during() { || ... } click to toggle source

Temporarily turn off warnings. Intended for tests only.

# File lib/rubygems/deprecate.rb, line 37
def skip_during
  Gem::Deprecate.skip, original = true, Gem::Deprecate.skip
  yield
ensure
  Gem::Deprecate.skip = original
end