| 11. | Computer scientists often need to manipulate abstract syntax trees.
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| 12. | These are recognizers that process abstract syntax trees which can be automatically generated by parsers.
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| 13. | Algebraic data types are highly-suited to implementing abstract syntax.
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| 14. | These tree parsers are unique to ANTLR and greatly simplify the processing of abstract syntax trees.
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| 15. | The first working drafts of the abstract syntax, reference and synopsis were published in July 2002.
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| 16. | The parser typically retrieves this information from the lexer and stores it in the abstract syntax tree.
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| 17. | The input to the code generator typically consists of a parse tree or an abstract syntax tree.
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| 18. | The abstract syntax tree is at the center of the syntax extensions, which are in fact OCaml programs.
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| 19. | Parsers can automatically generate parse trees or abstract syntax trees which can be further processed with tree parsers.
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| 20. | They would all converge to an abstract syntax tree in a unique format that a compiler can handle.
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