Module: RulerCoaster::Parser

Included in:
RulerCoaster
Defined in:
lib/ruler_coaster/parser.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.symbolyze_keys(hash) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 65

def symbolyze_keys(hash)
  {}.tap do |symbolyzed_hash|
    hash.each do |key, value|
      symbolyzed_hash[key.to_sym] = \
        if value.is_a?(Hash)
          symbolyze_keys(value)
        else
          value
        end
    end
  end
end

Instance Method Details

#parse(root) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 3

def parse(root)
  visit(symbolyze_keys(root))
end

#visit(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 7

def visit(node)
  send("visit_#{node[:type]}", node)
end

#visit_and(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 11

def visit_and(node)
  Logic::And.new(visit(node[:left]), visit(node[:right]))
end

#visit_contain(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 47

def visit_contain(node)
  Operator::Contain.new node[:value], node[:value_type]
end

#visit_empty(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 55

def visit_empty(node)
  Operator::Empty.new node[:value], node[:value_type]
end

#visit_equal(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 31

def visit_equal(node)
  Operator::Equal.new node[:value], node[:value_type]
end

#visit_greater_than(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 39

def visit_greater_than(node)
  Operator::GreaterThan.new node[:value], node[:value_type]
end

#visit_less_than(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 43

def visit_less_than(node)
  Operator::LessThan.new node[:value], node[:value_type]
end

#visit_nor(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 23

def visit_nor(node)
  Logic::Nor.new(visit(node[:left]), visit(node[:right]))
end

#visit_not(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 15

def visit_not(node)
  Logic::Not.new(visit(node[:left]), visit(node[:right]))
end

#visit_not_contain(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 51

def visit_not_contain(node)
  Operator::NotContain.new node[:value], node[:value_type]
end

#visit_not_empty(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 59

def visit_not_empty(node)
  Operator::NotEmpty.new node[:value], node[:value_type]
end

#visit_not_equal(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 35

def visit_not_equal(node)
  Operator::NotEqual.new node[:value], node[:value_type]
end

#visit_or(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 19

def visit_or(node)
  Logic::Or.new(visit(node[:left]), visit(node[:right]))
end

#visit_rule(node) ⇒ Object 



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# File 'lib/ruler_coaster/parser.rb', line 27

def visit_rule(node)
  Rule.new(node[:path], visit(node[:operator]))
end