17.7: Chapter Summary
- Page ID
- 46450
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This concludes our tutorial of PetitParser. We have reviewed the following points:
- A parser is a composition of multiple smaller parsers combined with combinators.
- To parse a string, use the method
parse:
. - To know if a string matches a grammar, use the method
matches:
. - The method
flatten
returns a String from the result of the parsing. - The method
==>
performs the transformation given in the block given in parameter. - Compose parsers (and create a grammar) by subclassing
PPCompositeParser
. - Test your parser by subclassing
PPCompositeParserTest
.
For a more extensive view of PetitParser, its concepts and implementation, the Moose book1 and Lukas Renggli’s PhD2 have both a dedicated chapter.