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Replace nested ifs with case/when

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Signed-off-by: Santiago Pastorino <santiago@wyeworks.com>
This commit is contained in:
Pavel Gorbokon 2010-12-07 19:00:49 +02:00 committed by Santiago Pastorino
parent 4c4c7a272f
commit 1ce9b73e5c
1 changed files with 43 additions and 45 deletions
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88
activesupport/lib/active_support/callbacks.rb
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@ -178,49 +178,48 @@ module ActiveSupport
# options[0] is the compiled form of supplied conditions
# options[1] is the "end" for the conditional
#
if @kind == :before || @kind == :around
if @kind == :before
# if condition # before_save :filter_name, :if => :condition
# filter_name
# end
filter = <<-RUBY_EVAL
unless halted
result = #{@filter}
halted = (#{chain.config[:terminator]})
end
RUBY_EVAL
case @kind
when :before
# if condition # before_save :filter_name, :if => :condition
# filter_name
# end
filter = <<-RUBY_EVAL
unless halted
result = #{@filter}
halted = (#{chain.config[:terminator]})
end
RUBY_EVAL
[@compiled_options[0], filter, @compiled_options[1]].compact.join("\n")
else
# Compile around filters with conditions into proxy methods
# that contain the conditions.
#
# For `around_save :filter_name, :if => :condition':
#
# def _conditional_callback_save_17
# if condition
# filter_name do
# yield self
# end
# else
# yield self
# end
# end
#
name = "_conditional_callback_#{@kind}_#{next_id}"
@klass.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
def #{name}(halted)
#{@compiled_options[0] || "if true"} && !halted
#{@filter} do
yield self
end
else
[@compiled_options[0], filter, @compiled_options[1]].compact.join("\n")
when :around
# Compile around filters with conditions into proxy methods
# that contain the conditions.
#
# For `around_save :filter_name, :if => :condition':
#
# def _conditional_callback_save_17
# if condition
# filter_name do
# yield self
# end
# else
# yield self
# end
# end
#
name = "_conditional_callback_#{@kind}_#{next_id}"
@klass.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
def #{name}(halted)
#{@compiled_options[0] || "if true"} && !halted
#{@filter} do
yield self
end
else
yield self
end
RUBY_EVAL
"#{name}(halted) do"
end
end
RUBY_EVAL
"#{name}(halted) do"
end
end
@ -229,15 +228,14 @@ module ActiveSupport
def end(key=nil, object=nil)
return if key && !object.send("_one_time_conditions_valid_#{@callback_id}?")
if @kind == :around || @kind == :after
case @kind
when :after
# if condition # after_save :filter_name, :if => :condition
# filter_name
# end
if @kind == :after
[@compiled_options[0], @filter, @compiled_options[1]].compact.join("\n")
else
"end"
end
[@compiled_options[0], @filter, @compiled_options[1]].compact.join("\n")
when :around
"end"
end
end