lox_rs

This is a rust implementation of the lox interpreter from https://www.craftinginterpreters.com.

Other features added that are not explicitly covered in the book:

• keep track of column
• logging framework
• repl expression output
• can't use variable if undefined
• break
• continue
  • The implementation is slightly strange for this. It will stop the execution of the current block that is the a direct chlid of a loop statement, but it will keep executing other blocks after the block that contained the continue. This is done because the desugared for loop needs to be able to execute the last block. If I implement some kind of goto statement it could fix this issue.
• use let instead of var, but var is supported so I can still interpret lox code
• if and while require a block but no parentheses just like rust