Contents

require_relative '../function'

module Dentaku
  module AST
    class If < Function
      attr_reader :predicate, :left, :right

      def self.min_param_count
        3
      end

      def self.max_param_count
        3
      end

      def initialize(predicate, left, right)
        @predicate = predicate
        @left      = left
        @right     = right
      end

      def value(context = {})
        predicate.value(context) ? left.value(context) : right.value(context)
      end

      def node_type
        :condition
      end

      def type
        left.type
      end

      def dependencies(context = {})
        deps = predicate.dependencies(context)

        if deps.empty?
          predicate.value(context) ? left.dependencies(context) : right.dependencies(context)
        else
          (deps + left.dependencies(context) + right.dependencies(context)).uniq
        end
      end
    end
  end
end

Dentaku::AST::Function.register_class(:if, Dentaku::AST::If)

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
dentaku-3.4.2	lib/dentaku/ast/functions/if.rb
dentaku-3.4.1	lib/dentaku/ast/functions/if.rb
dentaku-3.4.0	lib/dentaku/ast/functions/if.rb
dentaku-3.3.4	lib/dentaku/ast/functions/if.rb
dentaku-3.3.3	lib/dentaku/ast/functions/if.rb