etc/tatsu.ebnf contains a grammar for the Tatsu grammar
language written in its own grammar language. It is used in the
bootstrap test suite to prove that Tatsu can generate a parser to
parse its own language, and the resulting parser is made the bootstrap
parser every time Tatsu is stable (see
the generated parser).
Tatsu uses Tatsu to translate grammars into parsers, so it is a good example of end-to-end translation.
examples/regexp contains a regexp-to-EBNF translator and
parser generator. The project has no practical use, but it’s a complete,
end-to-end example of how to implement a translator using Tatsu.
examples/calc implements a calculator for simple
expressions, and is written as a tutorial over most of the features
provided by Tatsu.
examples/g2e contains a ANTLR to Tatsu grammar
translator. The project is a good example of the use of models and
templates in translation. The program,
g2e.py generates the
Tatsu grammar on standard output, but because the model used is
Tatsu‘s own, the same code can be used to directly generate a parser
from an ANTLR grammar. Please take a look at the examples README to
know about limitations.