Experiment with the Rust programming language for 2019

It's about time I give Rust a whirl.

.github/workflows/puzzles.yaml

@@ -11,6 +11,26 @@ on:
     - cron: '0 0 1 * *'
 
 jobs:
+  aoc-2019:
+    name: AoC 2019 — Rust
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./2019
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up environment
+        run: rustup show active-toolchain
+
+      - name: Run
+        run: make
+
+      - name: Lint
+        run: make lint
+
   aoc-2021:
     name: AoC 2021 — Python
     runs-on: ubuntu-latest

2019/.cargo/config.toml

@@ -0,0 +1,2 @@
+[net]
+offline = true

2019/.gitignore

@@ -0,0 +1,2 @@
+Cargo.lock
+target/

2019/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "aoc-2019"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

2019/Makefile

@@ -0,0 +1,46 @@
+MAKEFLAGS += --warn-undefined-variables
+SHELL := bash
+.SHELLFLAGS := -eu -o pipefail -c
+.DEFAULT_GOAL := all
+.DELETE_ON_ERROR:
+.SUFFIXES:
+
+CARGO ?= cargo
+PROFILE ?= release
+
+ext := .rs
+srcdir := src/bin
+srcs := $(wildcard $(srcdir)/puzzle_*$(ext))
+answers := $(subst puzzle,answer,$(patsubst %$(ext),%.txt, $(notdir $(srcs))))
+
+include $(CURDIR)/../mk-common/common.mk
+
+targetdir := target/$(PROFILE)
+
+answer_%.txt: $(targetdir)/puzzle_% input_%.txt
+	./$< < $(filter-out $<, $^) | tee $@
+
+.NOTINTERMEDIATE: $(targetdir)/puzzle_%
+$(targetdir)/puzzle_%: $(srcdir)/puzzle_%$(ext)
+	$(CARGO) build --profile $(PROFILE) --bin $(notdir $@)
+
+.PHONY: lint
+lint: lint-code lint-format
+
+.PHONY: lint-code
+lint-code:
+	$(CARGO) clippy
+
+.PHONY: lint-format
+lint-format:
+	$(CARGO) fmt --check
+
+.PHONY: format
+format:
+	$(CARGO) clippy --fix --allow-dirty
+	$(CARGO) fmt
+
+.PHONY: distclean
+distclean: clean
+	$(CARGO) clean
+	$(RM) Cargo.lock

2019/src/bin/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, World!");
+}