Sha256: 08649c3eae5d2deb8a82ea8481400735ba6848dee742af1d90c9d73b5d9262ac
Contents?: true
Size: 733 Bytes
Versions: 120
Compression:
Stored size: 733 Bytes
Contents
module Arel
module Visitors
class Visitor
def accept object
visit object
end
private
DISPATCH = Hash.new do |hash, klass|
hash[klass] = "visit_#{(klass.name || '').gsub('::', '_')}"
end
def dispatch
DISPATCH
end
def visit object
send dispatch[object.class], object
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
end
end
end
Version data entries
120 entries across 102 versions & 14 rubygems