我在文件里读到"http://docs.python.org/py3k/reference/grammar.html>这个页面 ,注意到其中写着
This is the full Python grammar, as it is read by the parser generator and used to parse Python source files
然而,我很难弄清楚CPython(CPython)采集器生成器的用途。那么,CPython(CPython)使用什么生成器?是否有其他采集器生成器可以在不作任何修改的情况下使用该页面上的语法?
Python是开放源码 所以你可以检查源码...
在 Python 源目录中, Python 源目录是一个含有“ Python. asdl” 的“ Parser” 目录, 带有该注释
-- ASDL s four builtin types are identifier, int, string, object
同一目录中还有一个“ asdl. py” 文件...
"""An implementation of the Zephyr Abstract Syntax Definition Language. See http://asdl.sourceforge.net/ and http://www.cs.princeton.edu/research/techreps/TR-554-97 Only supports top level module decl, not view. I m guessing that view is intended to support the browser and I m not interested in the browser. Changes for Python: Add support for module versions """
因此,它似乎是一个定制的采集器生成器。 LALR(1) 采集器生成器并不难写。
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