Embedded Interpretation
Embed interpreter actions into the grammar, so that executing the parser causes the text to be directly interpreted to produce the response.
There are many occasions where you may want to run a DSL script and get an immediate result, such as performing a calculation or running a query. Embedded Interpretation interprets the DSL script during parsing, so the result of the parse is the result of the script itself.
For more details see chapter 26 of the DSL book