eutro / aoc2022

Solutions to Advent of Code in Prolog

AOC 2022

These are my solutions to Advent of Code 2022, written in Prolog.

Building

Solutions are written for SWI-Prolog, and it (the swipl command) is required to run these solutions. To run the solution for a day, consult the source file and query tha main. goal. This will read the input from current_input (stdin by default, or AOC_INPUT when linked using cmp.sh/Tup), and output answers to current_output (stdout by default). Some days also require linking against their C source file.

Builds are automated using Tup (and the scripts use it), but I'm sure you can compile things manually too (yeehaw).

Here's what the scripts do:

• ./fetch.sh [day]: fetch input for the given day (defaults to today), putting it in the inputs directory.
  • Requires session.key in the containing directory, which must contain your session cookie from the Advent of Code website.
• ./cmp.sh [day]: compile the solution for the given day (or today), outputting to the out directory.
  • This just calls tup for the specified day.
• ./run.sh [day] [--]: run the solution for the given day.
  • Recompiles by calling cmp.sh.
  • If -- is not provided, fetch input (with fetch.sh) if not yet downloaded.
  • With --, just read input from stdin.