isEmptyLeaf

abstract val isEmptyLeaf: Boolean
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an Empty Leaf is constructed by a parse by specifically matching nothing, caused by:

  • a rule with no items (for example 'rule = ;')
  • an optional item (for example 'rule = item?;')
  • a list of items with 0 multiplicity (for example 'rule = item*;')

    true if this node is an EmptyLeaf