This repo contains a tiny parser toolkit that can be used to build new parsers and programming languages.

It provides:

• Configurable tokenizer
• Parser core (accept functions with state restoration)
• Compiler error management (emission, rendering, source locations)

Invoke zig build run to run a tiny command line calculator that can evaluate basic expressions, parens and invoke functions:

$ zig build run ? 10 = 10 ? 10 + 10 = 20 ? 5 * 3 = 15 ? a = 10 = 10 ? sqrt(a) = 3.1622776601683795 ? sin(3.14) = 0.0015926529164868282 ? a = a + 1 = 11 ? a = a + 1 = 12 ? ^D 

Available functions are:

fn sin(v: f64) f64 fn cos(v: f64) f64 fn tan(v: f64) f64 fn sqrt(v: f64) f64 fn pow(a: f64, b: f64) f64 fn ln(v: f64) f64 fn ln10(v: f64) f64 fn ln2(v: f64) f64 fn log(b: f64, v: f64) f64