[Tutor] python parser
eike.welk at gmx.net
Mon Dec 22 21:54:27 CET 2008
I have written a (currently mostly defunct) compiler in Python for a
specialized programming language. The parser may serve as an example
The method --- Parser._defineLanguageSyntax --- creates the Pyparsing
object. There are gigantic amounts of (mostly correct) comments in
the file. Excuse the bad English and the typos. The style is somewhat
adapted to the IDE Pydev.
The parser reads the program text (no scanner) and creates a tree
structure from it. I call it AST or Parse Tree (I can't decide how to
call it). This tree is used in subsequent passes of the compiler.
I use a modified version of Pyparsing where I fixed things that I
considered bugs, and where I implemented some of my wishes:
More information about the Tutor