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adding 'by' to array comprehensions

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This commit is contained in:
Jeremy Ashkenas 2010-02-06 10:12:57 -05:00
parent b795ae7fe1
commit decaea0f5f
2 changed files with 9 additions and 2 deletions
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5
lib/coffee_script/nodes.rb
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@ -848,8 +848,9 @@ module CoffeeScript
for_part = "#{index_var}=0, #{source.compile(o.merge(:index => ivar, :step => @step))}, #{index_var}++"
else
index_var = nil
source_part = "#{svar} = #{source.compile(o)};\n#{idt}"
for_part = @object ? "#{ivar} in #{svar}" : "#{ivar} = 0; #{ivar} < #{svar}.length; #{ivar}++"
source_part = "#{svar} = #{@source.compile(o)};\n#{idt}"
step_part = @step ? "#{ivar} += #{@step.compile(o)}" : "#{ivar}++"
for_part = @object ? "#{ivar} in #{svar}" : "#{ivar} = 0; #{ivar} < #{svar}.length; #{step_part}"
var_part = "#{body_dent}#{@name} = #{svar}[#{ivar}];\n" if @name
# body.unshift(AssignNode.new(@name, ValueNode.new(svar, [IndexNode.new(ivar)]))) if @name
end

6
test/fixtures/execution/test_array_comprehension.coffee vendored
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@ -40,3 +40,9 @@ for method in methods
print obj.one() is "I'm one"
print obj.two() is "I'm two"
print obj.three() is "I'm three"
# Steps should work for array comprehensions.
array: [0..10]
print num % 2 is 0 for num in array by 2