Arsenic : C++ implementation of the Lox interpreter

A Tree-walk Interpreter implementation as shown in Crafting Interpreters.

Chapters complete

1. Intro
2. A Map of thr Territory
3. The Arsenic(Lox) language
4. Scanning
5. Represening code
6. Parsing Expressions
7. Evaluating Expressions
8. Statements and State
9. Control flow
10. Functions
11. Resolving and Binding (in progress)
12. Classes (in progress)
13. Inheritance (in progress)

Building

For normal build run:

# in build dir
cmake <src-dir> 

For debug build run:

# in build dir
cmake -DCMAKE_BUILD_TYPE=Debug <src-dir> 

and then

cmake --build .

Usage

Below program prints Fibonacci sequence till 20th number.

fun fib(n) {
  if (n <= 1)
    return n;
  return fib(n - 2) + fib(n - 1);
}

for (var i = 0; i < 20; i = i + 1) {
  print fib(i);
}

To run above code, do:

arsenic test.nic

Classes with basic Inheritance

class Doughnut {
  cook() {
  print "Fry until golden brown.";
  }
}

class BostonCream < Doughnut {}

BostonCream().cook();