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# File 'lib/preval/visitors/arithmetic.rb', line 22
def on_binary(node)
left, operation, right = node.body
if left.is?(:@int) && OPERATORS.include?(operation) && right.is?(:@int)
value = left.to_int.public_send(operation, right.to_int).to_s
node.update(:@int, value)
elsif i[+ -].include?(operation)
if right.int?(0)
node.replace(left)
elsif left.int?(0)
node.replace(right)
end
elsif i[* /].include?(operation)
if right.int?(1)
node.replace(left)
elsif left.int?(1)
node.replace(right)
end
elsif operation == :**
if left.is?(:@int) && right.int?(0)
node.update(:@int, left.to_int < 0 ? -1 : 1)
elsif right.int?(1)
node.replace(left)
elsif left.int?(1)
node.replace(left)
end
end
end
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