73 lines
1.6 KiB
Ruby
73 lines
1.6 KiB
Ruby
class ConditionForm
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include ActiveModel::Model
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include Logic
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attr_accessor :top_operator_name, :rows, :source_tdcs
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def to_condition
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case sub_conditions.count
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when 0
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nil
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when 1
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sub_conditions.first
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else
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top_operator_class.new(sub_conditions)
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end
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end
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def delete_row(i)
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rows.slice!(i)
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self
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end
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def change_champ(i)
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sub_conditions[i] = Logic.ensure_compatibility_from_left(sub_conditions[i], source_tdcs)
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self
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end
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private
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def top_operator_class
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Logic.class_from_name(top_operator_name)
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end
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def sub_conditions
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@sub_conditions ||= rows.map { |row| row_to_condition(row) }
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end
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def row_to_condition(row)
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left = Logic.from_json(row[:targeted_champ])
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right = parse_value(left.type(source_tdcs), row[:value])
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Logic.class_from_name(row[:operator_name]).new(left, right)
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end
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def parse_value(left_type, value)
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return empty if value.blank?
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if left_type == :number
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# in this special case, we try to cast as Float, then Integer
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# but it can still be a previous string value or a mistap
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number = parse_to_number(value)
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return constant(number) if number
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end
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# otherwise it can be a serialized Constant(true | false) term
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# or a serialized Empty term
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term = Logic.from_json(value) rescue nil
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return term if term.present?
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# if anything else, save it as a constant of string
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constant(value)
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end
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def parse_to_number(str)
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float = Float(str)
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float % 1 == 0 ? float.to_i : float
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rescue ArgumentError
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nil
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end
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end
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