Class: FastRuby::Reductor

Inherits:
Object show all
Defined in:
lib/fastruby/builder/reductor.rb,
lib/fastruby/modules/reductor/for.rb,
lib/fastruby/modules/reductor/case.rb,
lib/fastruby/modules/reductor/nontree.rb,
lib/fastruby/modules/reductor/recursive.rb,
lib/fastruby/modules/reductor/fastruby_flag.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.reduce_for(ntype, options = {}, &blk) ⇒ Object 



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# File 'lib/fastruby/builder/reductor.rb', line 28

def self.reduce_for(ntype, options = {}, &blk)
  define_method_handler(:reduce, options, &blk).condition{|tree| tree.respond_to?(:node_type) && tree.node_type == ntype}
end

Instance Method Details

#call(*args) ⇒ Object 



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# File 'lib/fastruby/builder/reductor.rb', line 32

def call(*args)
  reduce *args
end

#when_array_to_if(array, temporal_var_name) ⇒ Object 



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# File 'lib/fastruby/modules/reductor/case.rb', line 27

def when_array_to_if(array, temporal_var_name)
  if array.size == 1
    array[0] || fs(:nil)
  else
    first_when_tree = array[0]
    comparers = first_when_tree[1][1..-1]

    condition_tree = fs(:or)
    comparers.each do |st|
      condition_tree << fs(:call, st, :===, fs(:arglist, fs(:lvar, temporal_var_name))) 
    end

    fs(:if, condition_tree, first_when_tree[2], when_array_to_if(array[1..-1], temporal_var_name) )
  end
end