parse-tree-notation is an actively used grammar language created in 1994. An important aspect of Parse Tree Notation (PTN) is that the data structure being manipulated is the parse tree for the program, not its token list. Pattern matching in PTN is on subtrees of the program's parse tree, using DCG rules to identify the subtrees of interest
- parse-tree-notation first appeared in 1994
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Last updated February 18th, 2020