KLox

An interpreter for Lox. Written in Kotlin.

Currently in progress of being rewritten for Graal/Truffle.

Notable differences to jLox

• C-style multiline comments (/* ... */) implemented; can be nested
• C-style ternary operator implemented
• Strings can be concatenated with anything
• Division by 0 causes a RuntimeError instead of NaN
• Variables are not initialized to nil by default; access before initialization leads to a RuntimeError
• Maximum function arguments are 16 instead of 8
• 'print $obj' statement is replaced by print($obj) and printLine($obj) native functions
• More native functions, see Interpreter class for a list of them

Build/Run

# Run as REPL
./gradlew run

# Execute $file
./gradlew run $file

Code style

Follow the style used by the default code formatter in IntelliJ IDEA. Max line length is 150.