If you look at Xtext’s documentation here, there is a mention of the possibility of adding import name space support to your DSLs. This allows your DSL to have Java like imports. For example, in our block language, it should be possible to import the name space from another Block and then use in our alias.
Continue ReadingOne of my favorite features of Xtext is the ability to have context dependant FQNs. One application of the feature is the this keyword, which is used to refer to the current instance in languages like Java. The full code for this example can be found here. The basic block language We are using the same block langague that we used in a previous tip.
Continue ReadingSometimes it happens that you have an Xtext DSL that needs generate code to be consumed by another DSL. We can see an example of the need in the question in the Eclipse Forums. This is especially a problem when you use maven to build your projects. There is a simple solution for that.
Continue ReadingSometimes, you need some constraints for your DSL and you can use the grammar language for that. However, this is not a good idea. For example, in a previous post, I created a grammar rule to parse hexadecimal numbers with exactly two digits. To do this, we created the following rule:
Continue ReadingSometimes we have a value that has different representations. For example, an integer can be represented in base 10, base 2, base 16 or any other. Depending of the domain, one of these representations might mean more to the experts. Xtext allows to do this very easily. The full code for this example can be found here.
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