adventofcode

day3.ha (1086B)

// SPDX-FileCopyrightText: 2023 Haelwenn (lanodan) Monnier <contact+aoc2023@hacktivis.me>
// SPDX-License-Identifier: MIT
use bufio;
use os;
use strings;
use ascii;
export fn main() void = {
	let symbols: [](size, size) = [];
	let numbers: [](size, size, rune) = [];
	for(let y = 0z; true; y += 1) {
		const line = match(bufio::read_line(os::stdin)) {
		case let l: []u8 => yield l;
		case io::EOF => break;
		case => abort();
		};
		const line = strings::fromutf8(line)!;
		let iter = strings::iter(line);
		
		for(let x = 0z; true; x += 1) {
			const c = match(strings::next(&iter)) {
			case let c: rune => yield c;
			case void => break;
			};
			if(c == '.') {
				continue;
			} else if(ascii::isdigit(c)) {
				append(numbers, (x, y, c));
			} else {
				// assume symbol
				append(symbols, (x, y));
			};
		};
	};
	for(let n = 0z; n < len(numbers); n += 1) {
		const num = numbers[n];
		for(let s = 0z; s < len(symbols); s += 1) {
			const sym = symbols[s];
			if(
				(math::absi(num.0 - sym.0) < 2) &&
				(math::absi(num.1 - sym.1) < 2)
			) {
				
			};
		};
	};
};