From 174772b5b8d9f5bf5e3c8e8152adfd89f0e83f6b Mon Sep 17 00:00:00 2001
From: Justin Wernick <justin@worthe-it.co.za>
Date: Tue, 19 Apr 2022 20:22:56 +0200
Subject: Refile for merging repos

---
 aoc12/src/main.rs | 136 ------------------------------------------------------
 1 file changed, 136 deletions(-)
 delete mode 100644 aoc12/src/main.rs

(limited to 'aoc12/src')

diff --git a/aoc12/src/main.rs b/aoc12/src/main.rs
deleted file mode 100644
index 2356402..0000000
--- a/aoc12/src/main.rs
+++ /dev/null
@@ -1,136 +0,0 @@
-extern crate regex;
-use regex::Regex;
-
-use std::io::BufReader;
-use std::io::prelude::*;
-use std::fs::File;
-
-enum Instruction {
-    CpyLit(i32, usize),
-    CpyReg(usize, usize),
-    Inc(usize),
-    Dec(usize),  
-    Jnz(usize, i32),
-    Jmp(i32),
-    Noop
-}
-
-impl Instruction {
-    fn parse(line: &str) -> Instruction {
-        let cpy_lit: Regex = Regex::new(r"cpy ([-\d]+) (a|b|c|d)").unwrap();
-        let cpy_reg = Regex::new(r"cpy (a|b|c|d) (a|b|c|d)").unwrap();
-        let inc = Regex::new(r"inc (a|b|c|d)").unwrap();
-        let dec = Regex::new(r"dec (a|b|c|d)").unwrap();
-        let jnz_lit = Regex::new(r"jnz ([-\d]+) ([-\d]+)").unwrap();
-        let jnz_reg = Regex::new(r"jnz (a|b|c|d) ([-\d]+)").unwrap();
-
-        let cpy_lit_match = cpy_lit.captures(line);
-        let cpy_reg_match = cpy_reg.captures(line);
-        let inc_match = inc.captures(line);
-        let dec_match = dec.captures(line);
-        let jnz_lit_match = jnz_lit.captures(line);
-        let jnz_reg_match = jnz_reg.captures(line);
-        
-        if cpy_lit_match.is_some() {
-            let cap = cpy_lit_match.unwrap();
-            let src: i32 = cap.at(1).unwrap().parse().unwrap();
-            let dest = to_register_index(cap.at(2).unwrap());
-            Instruction::CpyLit(src, dest)
-        }
-        else if cpy_reg_match.is_some() {
-            let cap = cpy_reg_match.unwrap();
-            let src = to_register_index(cap.at(1).unwrap());
-            let dest = to_register_index(cap.at(2).unwrap());
-            Instruction::CpyReg(src, dest)
-        }
-        else if inc_match.is_some() {
-            let cap = inc_match.unwrap();
-            let dest = to_register_index(cap.at(1).unwrap());
-            Instruction::Inc(dest)
-        }
-        else if dec_match.is_some() {
-            let cap = dec_match.unwrap();
-            let dest = to_register_index(cap.at(1).unwrap());
-            Instruction::Dec(dest)
-        }
-        else if jnz_lit_match.is_some() {
-            let cap = jnz_lit_match.unwrap();
-            let condition: i32 = cap.at(1).unwrap().parse().unwrap();
-            let offset: i32 = cap.at(2).unwrap().parse().unwrap();
-            if condition != 0 {
-                Instruction::Jmp(offset)
-            }
-            else {
-                Instruction::Noop
-            }
-        }
-        else if jnz_reg_match.is_some() {
-            let cap = jnz_reg_match.unwrap();
-            let condition = to_register_index(cap.at(1).unwrap());
-            let offset: i32 = cap.at(2).unwrap().parse().unwrap();
-            Instruction::Jnz(condition, offset)
-        }
-        else {
-            panic!("Invalid instruction line")
-        }
-    }
-}
-
-fn main() {
-    let program = read_file();
-
-    let mut registers: [i32; 4] = [0, 0, 1, 0];
-    let mut pc: usize = 0;
-    
-    while pc < program.len() {
-        let mut pc_next: usize = pc+1;
-
-        match program[pc] {
-            Instruction::CpyLit(src, dest) => {
-                registers[dest] = src;
-            },
-            Instruction::CpyReg(src, dest) => {
-                registers[dest] = registers[src];
-            },
-            Instruction::Inc(dest) => {
-                registers[dest] += 1;
-            },
-            Instruction::Dec(dest) => {
-                registers[dest] -= 1;
-            },
-            Instruction::Jnz(condition, offset) => {
-                if registers[condition] != 0 {
-                    pc_next = (pc as i32 + offset) as usize;
-                }
-            },
-            Instruction::Jmp(offset) => {
-                pc_next = (pc as i32 + offset) as usize
-            },
-            Instruction::Noop => {}
-        }
-
-        pc = pc_next;
-    }
-    
-    println!("a: {}, b: {}, c: {}, d: {}", registers[0], registers[1], registers[2], registers[3]);
-    
-}
-
-fn to_register_index(name: &str) -> usize {
-    match name {
-        "a" => 0,
-        "b" => 1,
-        "c" => 2,
-        "d" => 3,
-        _ => panic!("Invalid register provided")
-    }
-}
-
-fn read_file() -> Vec<Instruction> {
-    let file = BufReader::new(File::open("input.txt").unwrap());
-    file.lines()
-        .map(|line| line.unwrap())
-        .filter(|line| line.len() > 0)
-        .map(|line| Instruction::parse(line.trim()))
-        .collect()
-}
-- 
cgit v1.2.3