rom: build.rs script to generate Pokemon structs

Signed-off-by: Maxime “pep” Buquet <pep@bouah.net>

rom/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "rom"
+version = "0.1.0"
+authors = ["Maxime “pep” Buquet <pep@bouah.net>"]
+edition = "2021"
+license = "AGPL-3.0-or-later"
+
+[build-dependencies]
+quote = "1.0"

rom/build.rs

@@ -0,0 +1,43 @@
+// Copyright (C) 2021 "Maxime “pep” Buquet <pep@bouah.net>"
+//
+// This program is free software: you can redistribute it and/or modify it
+// under the terms of the GNU Affero General Public License as published by the
+// Free Software Foundation, either version 3 of the License, or (at your
+// option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License
+// for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+use std::fs::File;
+use std::io::{BufWriter, Write};
+use std::path::Path;
+
+use quote::{format_ident, quote};
+
+fn main() {
+    let output = Path::new(&env::var("OUT_DIR").unwrap()).join("output.rs");
+    let mut output = BufWriter::new(File::create(&output).unwrap());
+
+    let pkmn_names: Vec<_> = [
+        "Rhydon",
+        "Kangashkan",
+        "NidoranM",
+    ].iter()
+    .map(|n| format_ident!("{}", n))
+    .collect();
+
+    let tokens = quote! {
+        /// Generated file containing various resources extracted from the provided ROM.
+
+        pub enum PokemonNames {
+            #(#pkmn_names),*
+        }
+    };
+
+    write!(output, "{}", tokens).unwrap();
+}