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Utilities for abstract syntax trees and parsing with PLY.

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About

Bare essentials for building abstract syntax trees (AST) and Python lex-yacc ([PLY](https://github.com/dabeaz/ply)) parsers. The package includes:

  • two classes for tree nodes: Terminal, Operator
  • a Lexer and Parser class, and a helper function to erase and rewrite the table files.

The examples under examples/ demonstrate how to use these classes to create a richer AST, a parser, and different backends that use the same parser.

These classes provide the boilerplate for parsing with PLY, and are based on code that was developed in [tulip](https://github.com/tulip-control/tulip-control) and [promela](https://github.com/johnyf/promela).

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