98 lines
2.4 KiB
Ruby
98 lines
2.4 KiB
Ruby
module Logic
|
|
def self.from_h(h)
|
|
class_from_name(h['term']).from_h(h)
|
|
end
|
|
|
|
def self.from_json(s)
|
|
from_h(JSON.parse(s))
|
|
end
|
|
|
|
def self.class_from_name(name)
|
|
[ChampValue, Constant, Empty, LessThan, LessThanEq, Eq, NotEq, GreaterThanEq, GreaterThan, EmptyOperator, And, Or]
|
|
.find { |c| c.name == name }
|
|
end
|
|
|
|
def self.ensure_compatibility_from_left(condition)
|
|
left = condition.left
|
|
right = condition.right
|
|
operator_class = condition.class
|
|
|
|
case [left.type, condition]
|
|
in [:boolean, _]
|
|
operator_class = Eq
|
|
in [:empty, _]
|
|
operator_class = EmptyOperator
|
|
in [:enum, _]
|
|
operator_class = Eq
|
|
in [:number, EmptyOperator]
|
|
operator_class = Eq
|
|
in [:number, _]
|
|
end
|
|
|
|
if !compatible_type?(left, right)
|
|
right = case left.type
|
|
when :boolean
|
|
Constant.new(true)
|
|
when :empty
|
|
Empty.new
|
|
when :enum
|
|
Constant.new(left.options.first.second)
|
|
when :number
|
|
Constant.new(0)
|
|
end
|
|
end
|
|
|
|
operator_class.new(left, right)
|
|
end
|
|
|
|
def self.compatible_type?(left, right)
|
|
case [left.type, right.type]
|
|
in [a, ^a] # syntax for same type
|
|
true
|
|
in [:enum, :string]
|
|
left.options.map(&:second).include?(right.value)
|
|
else
|
|
false
|
|
end
|
|
end
|
|
|
|
def self.add_empty_condition_to(condition)
|
|
empty_condition = EmptyOperator.new(Empty.new, Empty.new)
|
|
|
|
if condition.nil?
|
|
empty_condition
|
|
elsif [And, Or].include?(condition.class)
|
|
condition.tap { |c| c.operands << empty_condition }
|
|
else
|
|
Logic::And.new([condition, empty_condition])
|
|
end
|
|
end
|
|
|
|
def self.split_condition(condition)
|
|
[condition.left, condition.class.name, condition.right]
|
|
end
|
|
|
|
def ds_eq(left, right) = Logic::Eq.new(left, right)
|
|
|
|
def ds_not_eq(left, right) = Logic::NotEq.new(left, right)
|
|
|
|
def greater_than(left, right) = Logic::GreaterThan.new(left, right)
|
|
|
|
def greater_than_eq(left, right) = Logic::GreaterThanEq.new(left, right)
|
|
|
|
def less_than(left, right) = Logic::LessThan.new(left, right)
|
|
|
|
def less_than_eq(left, right) = Logic::LessThanEq.new(left, right)
|
|
|
|
def constant(value) = Logic::Constant.new(value)
|
|
|
|
def champ_value(stable_id) = Logic::ChampValue.new(stable_id)
|
|
|
|
def empty = Logic::Empty.new
|
|
|
|
def empty_operator(left, right) = Logic::EmptyOperator.new(left, right)
|
|
|
|
def ds_or(operands) = Logic::Or.new(operands)
|
|
|
|
def ds_and(operands) = Logic::And.new(operands)
|
|
end
|