(Not to mention useful for compiler plugins!)Įvery node in the Kotlin IR syntax tree implements IrElement. Many of these “lowerings” are the same across all Kotlin platforms - suspend functions for example - which makes having a common backend representation for Kotlin extremely useful. Before it can be converted to JVM byte code, JavaScript, or LLVM’s own IR, these high-level concepts need to be lowered. Kotlin code is represented this way because Kotlin is a high-level programming language, allowing for many advanced programming concepts. Kotlin intermediate representation (IR) is an abstract syntax tree for representing Kotlin code. Part 6 - Support Libraries, Publishing, and Integration Testing.In this part we will drive right into the structure of Kotlin IR and what it looks like. In Part 1 we learned how to set up a Gradle project for building a Kotlin compiler plugin. If official documentation exists, please refer to it first. As such, information contained in this article about IR and compiler plugins could be out-of-date or incorrect. At the time of writing this article, Kotlin compatibility for IR backend is in Alpha status and the compiler plugin API is Experimental.
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