Kolasu
Kolasu supplies the infrastructure to build a custom, possibly mutable, Abstract Syntax Tree (AST) using Kotlin. In particular, it can be integrated easily with ANTLR, but it can also be used on its own. Kolasu strives to be usable and idiomatic also in Java projects.
It stands for Kotlin Language Support.
Features
Extend your AST classes from Node to get these features:
- Navigation: utility methods to traverse, search, and modify the AST
- Printing: print the AST as XML, as JSON, as a parse tree
Classes can have a name, and classes can reference a name. Utilities for resolving these references are supplied.
Kolasu tries to be non-invasive and implements this functionality by introspecting the AST. All properties, and therefore the whole tree structure, will be detected automatically.
Origin
Kolasu was born as a small framework to support building languages using ANTLR and Kotlin. It evolved over the time as it was used at Strumenta as part of open-source and commercial projects for building transpilers, interpreters, compilers, and more.
Using Kolasu in your project
Releases are published on Maven Central:
dependencies {
compile "com.strumenta.kolasu:kolasu-core:1.3.4"
}
How to format code
Run:
./gradlew ktlintFormat
Projects using Kolasu
Kolasu is used in several internal and commercial projects developed at Strumenta.
It is also used in an open-source project named Jariko. Jariko is an interpreter for RPG running on the JVM.
Publishing
To publish releases you need to set the environment variables GPR_USER and GPR_API_KEY.