{
    "info": {
        "author": "Allen Short",
        "author_email": "washort42@gmail.com",
        "bugtrack_url": null,
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        "description": "========\nPyMeta\n========\n\n--------------------------------------------\nA Pattern-Matching Language Based on Python\n--------------------------------------------\n\nSummary\n=======\n\nPyMeta is an implementation of OMeta, an object-oriented pattern-matching\nlanguage developed by Alessandro Warth\n(http://www.cs.ucla.edu/~awarth/ometa/). PyMeta provides a compact syntax based\non Parsing Expression Grammars (PEGs) for common lexing, parsing and\ntree-transforming activities in a way that's easy to reason about for Python\nprogrammers.\n\n\nHow It Works\n============\n\nPyMeta compiles a grammar to a Python class, with the rules as methods. The\nrules specify parsing expressions, which consume input and return values if\nthey succeed in matching.\n\nBasic syntax\n~~~~~~~~~~~~~~~~\n\n``foo ::= ....``\n   Define a rule named foo.\n``expr1 expr2``\n   Match expr1, and then match expr2 if it succeeds, returning the value of\n   expr2. Like Python's ``and``.\n``expr1 | expr2``\n  Try to match expr1 --- if it fails, match expr2 instead. Like Python's\n  ``or``.\n``expr*``\n  Match expr zero or more times, returning a list of matches.\n``expr+``\n  Match expr one or more times, returning a list of matches.\n``expr?``\n  Try to match expr. Returns None if it fails to match.\n``~expr``\n  Fail if the next item in the input matches expr.\n``<ruleName>``\n  Call the rule ``ruleName``.\n``'x'``\n  Match the literal character 'x'.\n``expr:name``\n  Bind the result of expr to the local variable ``name``.\n``=> pythonExpression``\n  Evaluate the given Python expression and return its result.\n\nComments like Python comments are supported as well, starting with #\nand extending to the end of the line.\n\nInterface\n=========\n\nThe starting point for defining a new grammar is\n``pymeta.grammar.OMeta.makeGrammar``, which takes a grammar definition and a\ndict of variable bindings for its embedded expressions and produces a Python\nclass. Grammars can be subclassed as usual, and makeGrammar can be called on\nthese classes to override rules and provide new ones. To invoke a grammar rule,\ncall ``grammarObject.apply()`` with its name.\n\nExample Usage\n=============\n\n>>> from pymeta.grammar import OMeta\n>>> exampleGrammar = \"\"\"\nones ::= '1' '1' => 1\ntwos ::= '2' '2' => 2\nstuff ::= (<ones> | <twos>)+\n\"\"\"\n>>> Example = OMeta.makeGrammar(exampleGrammar, {})\n>>> g = Example(\"11221111\")\n>>> result, error = g.apply(\"stuff\")\n>>> result\n[1, 2, 1, 1]",
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        "license": "MIT License",
        "maintainer": null,
        "maintainer_email": null,
        "name": "PyMeta",
        "package_url": "https://pypi.org/project/PyMeta/",
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        "summary": "Pattern-matching language based on OMeta",
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