| 11. | These tree parsers are unique to ANTLR and greatly simplify the processing of abstract syntax trees.
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| 12. | LeftHere you see a syntax tree.
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| 13. | The parser typically retrieves this information from the lexer and stores it in the abstract syntax tree.
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| 14. | Note : we define a location in an expression as a leaf node in the syntax tree.
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| 15. | The input to the code generator typically consists of a parse tree or an abstract syntax tree.
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| 16. | It may help to think of the abstract syntax tree of a programming language and algebraic data types.
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| 17. | Parsers can automatically generate parse trees or abstract syntax trees which can be further processed with tree parsers.
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| 18. | They would all converge to an abstract syntax tree in a unique format that a compiler can handle.
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| 19. | The Tree Grammar Engine ( TGE ) then converts these into Parrot Abstract Syntax Trees ( PAST ).
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| 20. | A semantic representation of this sort is at a higher-level of abstraction than a syntax tree.
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