Crystal implementation of the Monkey Language

Monyet has a sibling implementation for Kotlin: monkey.kt

The two books (Writing An Interpreter In Go and Writing A Compiler in Go) are implemented.

Before running the command you must have crystal and shards installed on your machine

There are two different implementations for the compiler/VM.

• The default variant, based on Array(UInt8) as Bytecode and OffsetArray arrays for read operations
• The slices variant, based purely on Slice(UInt8)

The slices variant is more idiomatic but the default variant has better performance (around 10%).

To compile with a different variant you can the flag --define=slice to your compile or test. Additionally, both build.sh and test.sh have lines that you can comment/uncomment to enable different variants