Ville T Oikarinen
ABSTRACT
This demonstration shows a lightweight and fast method for creating a tested and working domain specific language. The method is demonstrated using the ngrease metalanguage.
The creation of a new language is started by writing a representative example of the final product with a test that tests the transformation from a stub source to the result.
The test is made to pass by writing a constant transformer that unconditionally outputs the result.
At each step the language is extended by refactoring: Some part of the transformer template is converted from a constant subtree to a reference to data read from the source tree, thus driving additions to the new language.
Optionally, each refactoring step can be driven by a new test that demonstrates the lack of parameterization of some part of the final product.
- http://ngrease.sourceforge.net/introduction.htmlGoogle Scholar
- http://www.refactoring.com/catalog/parameterizeMethod.html; accessed 25.7.2007Google Scholar
Index Terms
- Extracting a domain specific language from an example: a bottom-up method using the ngrease metalanguage
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