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# File 'lib/copper/comparison.rb', line 4
def value(vars = {})
lhs = elements[0].value(vars)
comp_op = elements[1].value(vars)
rhs = elements[2].value(vars)
return true if rhs.nil? && lhs.nil?
return false if rhs.nil? || lhs.nil?
puts "[DEBUG] Comparing #{lhs} (#{lhs.class.name}) #{comp_op} #{rhs} (#{rhs.class.name})" if $debug
begin
case comp_op
when '='
return equality(lhs, rhs)
when '=='
return equality(lhs, rhs)
when '>'
return lhs > rhs
when '<'
return lhs < rhs
when '<='
return lhs <= rhs
when '>='
return lhs > rhs
when '!='
return lhs != rhs
when 'in'
rhs_class = ::Copper::DataTypes::DataType.get_class(rhs.class.name)
rhs_obj = rhs_class.new(rhs)
if rhs_obj.respond_to?(:in)
return rhs_obj.in(lhs)
else
raise ::Copper::RuntimeError, "in is not a valid comparision on #{rhs_class.name}"
end
when '->'
console(lhs)
end
rescue NoMethodError => exc
raise ParseError, "comparison error: #{exc.message}"
end
end
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