Module: Gem::Deprecate

Included in:
Gem, DependencyInstaller, Exception, Installer, Specification, StreamUI, TestCase
Defined in:
lib/rubygems/deprecate.rb

Overview

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

Class Method Summary collapse

Class Method Details

.deprecate(name, repl, year, month) ⇒ Object

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.


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# File 'lib/rubygems/deprecate.rb', line 50

def deprecate name, repl, year, month
  class_eval {
    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

.skipObject

:nodoc:


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# File 'lib/rubygems/deprecate.rb', line 26

def self.skip # :nodoc:
  @skip ||= false
end

.skip=(v) ⇒ Object

:nodoc:


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# File 'lib/rubygems/deprecate.rb', line 30

def self.skip= v # :nodoc:
  @skip = v
end

.skip_duringObject

Temporarily turn off warnings. Intended for tests only.


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# 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