dioxus/packages/interpreter/build.rs
2024-03-06 17:05:03 -08:00

68 lines
2.1 KiB
Rust

use std::{collections::hash_map::DefaultHasher, hash::Hasher, process::Command};
fn main() {
// If any TS changes, re-run the build script
println!("cargo:rerun-if-changed=src/ts/*.ts");
// Compute the hash of the ts files
let hash = hash_ts_files();
// If the hash matches the one on disk, we're good and don't need to update bindings
if include_str!("src/js/hash.txt").trim() == hash.to_string() {
return;
}
// Otherwise, generate the bindings and write the new hash to disk
// Generate the bindings for both native and web
gen_bindings("common", "common");
gen_bindings("native", "native");
gen_bindings("core", "core");
std::fs::write("src/js/hash.txt", hash.to_string()).unwrap();
}
/// Hashes the contents of a directory
fn hash_ts_files() -> u128 {
let mut out = 0;
let files = [
include_str!("src/ts/common.ts"),
include_str!("src/ts/native.ts"),
include_str!("src/ts/core.ts"),
];
for file in files.iter() {
let mut hasher = DefaultHasher::new();
hasher.write(file.as_bytes());
out += hasher.finish() as u128;
}
out
}
// okay...... so tsc might fail if the user doesn't have it installed
// we don't really want to fail if that's the case
// but if you started *editing* the .ts files, you're gonna have a bad time
// so.....
// we need to hash each of the .ts files and add that hash to the JS files
// if the hashes don't match, we need to fail the build
// that way we also don't need
fn gen_bindings(input_name: &str, output_name: &str) {
// If the file is generated, and the hash is different, we need to generate it
let status = Command::new("bun")
.arg("build")
.arg(format!("src/ts/{input_name}.ts"))
.arg("--outfile")
.arg(format!("src/js/{output_name}.js"))
.arg("--minify-whitespace")
.arg("--minify-syntax")
.status()
.unwrap();
if !status.success() {
panic!(
"Failed to generate bindings for {}. Make sure you have tsc installed",
input_name
);
}
}