diff options
Diffstat (limited to 'activesupport/lib/active_support')
4 files changed, 78 insertions, 17 deletions
diff --git a/activesupport/lib/active_support/core_ext/object/duplicable.rb b/activesupport/lib/active_support/core_ext/object/duplicable.rb index ea81df2bd8..b028df97ee 100644 --- a/activesupport/lib/active_support/core_ext/object/duplicable.rb +++ b/activesupport/lib/active_support/core_ext/object/duplicable.rb @@ -106,8 +106,8 @@ require "bigdecimal" class BigDecimal # BigDecimals are duplicable: # - # BigDecimal.new("1.2").duplicable? # => true - # BigDecimal.new("1.2").dup # => #<BigDecimal:...,'0.12E1',18(18)> + # BigDecimal.new("1.2").duplicable? # => true + # BigDecimal.new("1.2").dup # => #<BigDecimal:...,'0.12E1',18(18)> def duplicable? true end @@ -124,21 +124,31 @@ class Method end class Complex - # Complexes are not duplicable: - # - # Complex(1).duplicable? # => false - # Complex(1).dup # => TypeError: can't copy Complex - def duplicable? - false + begin + Complex(1).dup + rescue TypeError + + # Complexes are not duplicable: + # + # Complex(1).duplicable? # => false + # Complex(1).dup # => TypeError: can't copy Complex + def duplicable? + false + end end end class Rational - # Rationals are not duplicable: - # - # Rational(1).duplicable? # => false - # Rational(1).dup # => TypeError: can't copy Rational - def duplicable? - false + begin + Rational(1).dup + rescue TypeError + + # Rationals are not duplicable: + # + # Rational(1).duplicable? # => false + # Rational(1).dup # => TypeError: can't copy Rational + def duplicable? + false + end end end diff --git a/activesupport/lib/active_support/deprecation.rb b/activesupport/lib/active_support/deprecation.rb index 191e582de8..72c74e966a 100644 --- a/activesupport/lib/active_support/deprecation.rb +++ b/activesupport/lib/active_support/deprecation.rb @@ -15,6 +15,7 @@ module ActiveSupport require "active_support/deprecation/instance_delegator" require "active_support/deprecation/behaviors" require "active_support/deprecation/reporting" + require "active_support/deprecation/constant_accessor" require "active_support/deprecation/method_wrappers" require "active_support/deprecation/proxy_wrappers" require "active_support/core_ext/module/deprecation" @@ -32,7 +33,7 @@ module ActiveSupport # and the second is a library name # # ActiveSupport::Deprecation.new('2.0', 'MyLibrary') - def initialize(deprecation_horizon = "5.2", gem_name = "Rails") + def initialize(deprecation_horizon = "5.3", gem_name = "Rails") self.gem_name = gem_name self.deprecation_horizon = deprecation_horizon # By default, warnings are not silenced and debugging is off. diff --git a/activesupport/lib/active_support/deprecation/constant_accessor.rb b/activesupport/lib/active_support/deprecation/constant_accessor.rb new file mode 100644 index 0000000000..2b19de365f --- /dev/null +++ b/activesupport/lib/active_support/deprecation/constant_accessor.rb @@ -0,0 +1,50 @@ +require "active_support/inflector/methods" + +module ActiveSupport + class Deprecation + # DeprecatedConstantAccessor transforms a constant into a deprecated one by + # hooking +const_missing+. + # + # It takes the names of an old (deprecated) constant and of a new constant + # (both in string form) and optionally a deprecator. The deprecator defaults + # to +ActiveSupport::Deprecator+ if none is specified. + # + # The deprecated constant now returns the same object as the new one rather + # than a proxy object, so it can be used transparently in +rescue+ blocks + # etc. + # + # PLANETS = %w(mercury venus earth mars jupiter saturn uranus neptune pluto) + # + # (In a later update, the original implementation of `PLANETS` has been removed.) + # + # PLANETS_POST_2006 = %w(mercury venus earth mars jupiter saturn uranus neptune) + # include ActiveSupport::Deprecation::DeprecatedConstantAccessor + # deprecate_constant 'PLANETS', 'PLANETS_POST_2006' + # + # PLANETS.map { |planet| planet.capitalize } + # # => DEPRECATION WARNING: PLANETS is deprecated! Use PLANETS_POST_2006 instead. + # (Backtrace information…) + # ["Mercury", "Venus", "Earth", "Mars", "Jupiter", "Saturn", "Uranus", "Neptune"] + module DeprecatedConstantAccessor + def self.included(base) + extension = Module.new do + def const_missing(missing_const_name) + if class_variable_defined?(:@@_deprecated_constants) + if (replacement = class_variable_get(:@@_deprecated_constants)[missing_const_name.to_s]) + replacement[:deprecator].warn(replacement[:message] || "#{name}::#{missing_const_name} is deprecated! Use #{replacement[:new]} instead.", caller_locations) + return ActiveSupport::Inflector.constantize(replacement[:new].to_s) + end + end + super + end + + def deprecate_constant(const_name, new_constant, message: nil, deprecator: ActiveSupport::Deprecation.instance) + class_variable_set(:@@_deprecated_constants, {}) unless class_variable_defined?(:@@_deprecated_constants) + class_variable_get(:@@_deprecated_constants)[const_name.to_s] = { new: new_constant, message: message, deprecator: deprecator } + end + end + base.singleton_class.prepend extension + end + end + end +end diff --git a/activesupport/lib/active_support/gem_version.rb b/activesupport/lib/active_support/gem_version.rb index a641b96c57..371a39a5e6 100644 --- a/activesupport/lib/active_support/gem_version.rb +++ b/activesupport/lib/active_support/gem_version.rb @@ -6,9 +6,9 @@ module ActiveSupport module VERSION MAJOR = 5 - MINOR = 1 + MINOR = 2 TINY = 0 - PRE = "beta1" + PRE = "alpha" STRING = [MAJOR, MINOR, TINY, PRE].compact.join(".") end |