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advent_of_code_2025
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4
.gitignore vendored
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@ -1,3 +1 @@
*.pyc *.pyc
.zig-cache
zig-out/

0
python/day02.py → src/day02.py
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0
python/day1.py → src/day1.py
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0
python/utils/load.py → src/utils/load.py
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59
zig/build.zig
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const std = @import("std");
// Although this function looks imperative, it does not perform the build
// directly and instead it mutates the build graph (`b`) that will be then
// executed by an external runner. The functions in `std.Build` implement a DSL
// for defining build steps and express dependencies between them, allowing the
// build runner to parallelize the build automatically (and the cache system to
// know when a step doesn't need to be re-run).
pub fn build(b: *std.Build) void {
// Standard target options allow the person running `zig build` to choose
// what target to build for. Here we do not override the defaults, which
// means any target is allowed, and the default is native. Other options
// for restricting supported target set are available.
const target = b.standardTargetOptions(.{});
// Standard optimization options allow the person running `zig build` to select
// between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not
// set a preferred release mode, allowing the user to decide how to optimize.
const optimize = b.standardOptimizeOption(.{});
// It's also possible to define more custom flags to toggle optional features
// of this build script using `b.option()`. All defined flags (including
// target and optimize options) will be listed when running `zig build --help`
// in this directory.
const exe = b.addExecutable(.{
.name = "zig",
.root_module = b.createModule(.{
.root_source_file = b.path("src/main.zig"),
.target = target,
.optimize = optimize,
.imports = &.{},
}),
});
b.installArtifact(exe);
const run_step = b.step("run", "Run the app");
const run_cmd = b.addRunArtifact(exe);
run_step.dependOn(&run_cmd.step);
run_cmd.step.dependOn(b.getInstallStep());
if (b.args) |args| {
run_cmd.addArgs(args);
}
const exe_tests = b.addTest(.{
.root_module = exe.root_module,
});
// A run step that will run the second test executable.
const run_exe_tests = b.addRunArtifact(exe_tests);
// A top level step for running all tests. dependOn can be called multiple
// times and since the two run steps do not depend on one another, this will
// make the two of them run in parallel.
const test_step = b.step("test", "Run tests");
test_step.dependOn(&run_exe_tests.step);
}

81
zig/build.zig.zon
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@ -1,81 +0,0 @@
.{
// This is the default name used by packages depending on this one. For
// example, when a user runs `zig fetch --save <url>`, this field is used
// as the key in the `dependencies` table. Although the user can choose a
// different name, most users will stick with this provided value.
//
// It is redundant to include "zig" in this name because it is already
// within the Zig package namespace.
.name = .zig,
// This is a [Semantic Version](https://semver.org/).
// In a future version of Zig it will be used for package deduplication.
.version = "0.0.0",
// Together with name, this represents a globally unique package
// identifier. This field is generated by the Zig toolchain when the
// package is first created, and then *never changes*. This allows
// unambiguous detection of one package being an updated version of
// another.
//
// When forking a Zig project, this id should be regenerated (delete the
// field and run `zig build`) if the upstream project is still maintained.
// Otherwise, the fork is *hostile*, attempting to take control over the
// original project's identity. Thus it is recommended to leave the comment
// on the following line intact, so that it shows up in code reviews that
// modify the field.
.fingerprint = 0xc1ce10815a5d4f65, // Changing this has security and trust implications.
// Tracks the earliest Zig version that the package considers to be a
// supported use case.
.minimum_zig_version = "0.15.2",
// This field is optional.
// Each dependency must either provide a `url` and `hash`, or a `path`.
// `zig build --fetch` can be used to fetch all dependencies of a package, recursively.
// Once all dependencies are fetched, `zig build` no longer requires
// internet connectivity.
.dependencies = .{
// See `zig fetch --save <url>` for a command-line interface for adding dependencies.
//.example = .{
// // When updating this field to a new URL, be sure to delete the corresponding
// // `hash`, otherwise you are communicating that you expect to find the old hash at
// // the new URL. If the contents of a URL change this will result in a hash mismatch
// // which will prevent zig from using it.
// .url = "https://example.com/foo.tar.gz",
//
// // This is computed from the file contents of the directory of files that is
// // obtained after fetching `url` and applying the inclusion rules given by
// // `paths`.
// //
// // This field is the source of truth; packages do not come from a `url`; they
// // come from a `hash`. `url` is just one of many possible mirrors for how to
// // obtain a package matching this `hash`.
// //
// // Uses the [multihash](https://multiformats.io/multihash/) format.
// .hash = "...",
//
// // When this is provided, the package is found in a directory relative to the
// // build root. In this case the package's hash is irrelevant and therefore not
// // computed. This field and `url` are mutually exclusive.
// .path = "foo",
//
// // When this is set to `true`, a package is declared to be lazily
// // fetched. This makes the dependency only get fetched if it is
// // actually used.
// .lazy = false,
//},
},
// Specifies the set of files and directories that are included in this package.
// Only files and directories listed here are included in the `hash` that
// is computed for this package. Only files listed here will remain on disk
// when using the zig package manager. As a rule of thumb, one should list
// files required for compilation plus any license(s).
// Paths are relative to the build root. Use the empty string (`""`) to refer to
// the build root itself.
// A directory listed here means that all files within, recursively, are included.
.paths = .{
"build.zig",
"build.zig.zon",
"src",
// For example...
//"LICENSE",
//"README.md",
},
}

13
zig/src/days/day01.zig
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const std = @import("std");
const debug = std.debug;
const day = @import("../utils/day.zig");
pub const Day = struct {
pub const nb = 1;
pub fn part1(_: []const u8) void {
debug.print("hello from day01 - part 1", .{});
}
pub fn part2(_: []const u8) void {
debug.print("hello from day01 - part 2", .{});
}
};

40
zig/src/main.zig
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const std = @import("std");
const debug = std.debug;
const Day = @import("utils/day.zig").Day;
const Map = std.AutoHashMap(usize, Day);
const import_days = struct {
pub const day01 = @import("days/day01.zig");
};
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
const alloc = gpa.allocator();
const args = try std.process.argsAlloc(alloc);
defer std.process.argsFree(alloc, args);
if (args.len < 2) return error.InvalidArgs;
const arg_day_nb = try std.fmt.parseInt(usize, args[1], 10);
var days = Map.init(alloc);
defer days.deinit();
debug.print("Running day {d}\n", .{arg_day_nb});
inline for (comptime std.meta.declarations(import_days)) |decl| {
const day_str = decl.name[3..]; // Skip "day" prefix
const day_number = try std.fmt.parseInt(usize, day_str, 10);
if (day_number == arg_day_nb) {
const imported_day = @field(import_days, decl.name).Day;
const day = Day{ .nb = imported_day.nb, .part1 = imported_day.part1, .part2 = imported_day.part2 };
// TODO: get the correct input values
const buffer = "coucou";
day.part1(buffer);
day.part2(buffer);
break;
}
}
}

8
zig/src/utils/day.zig
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const std = @import("std");
const fn_part_run = *const fn (str_buffer: []const u8) void;
pub const Day = struct {
nb: u32 = 0,
part1: fn_part_run,
part2: fn_part_run,
};

8
zig/src/utils/input.zig
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const std = @import("std");
pub fn read_input(day_nb: comptime_int, alloc: std.mem.Allocator) void {
var path = "../../inputs/day01.txt";
const file = try std.fs.cwd().readFile(
path,
);
}