class Arel::Visitors::Visitor
Constants
- DISPATCH
Public Instance Methods
accept(object)
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# File lib/arel/visitors/visitor.rb, line 4 def accept object visit object end
Private Instance Methods
dispatch()
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# File lib/arel/visitors/visitor.rb, line 17 def dispatch DISPATCH[self.class] end
visit(object, attribute = nil)
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# File lib/arel/visitors/visitor.rb, line 21 def visit object, attribute = nil send dispatch[object.class], object, attribute rescue NoMethodError => e raise e if respond_to?(dispatch[object.class], true) superklass = object.class.ancestors.find { |klass| respond_to?(dispatch[klass], true) } raise(TypeError, "Cannot visit #{object.class}") unless superklass dispatch[object.class] = dispatch[superklass] retry end