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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
use std::env;
use std::path::Path;
use std::path::PathBuf;
// This is a shim that allows to generate documentation on docs.rs
#[cfg(not(feature = "docsrs"))]
mod not_docs {
use super::*;
use deno_core::Extension;
use deno_core::JsRuntime;
use deno_core::RuntimeOptions;
// TODO(bartlomieju): this module contains a lot of duplicated
// logic with `cli/build.rs`, factor out to `deno_core`.
fn create_snapshot(
mut js_runtime: JsRuntime,
snapshot_path: &Path,
files: Vec<PathBuf>,
) {
// TODO(nayeemrmn): https://github.com/rust-lang/cargo/issues/3946 to get the
// workspace root.
let display_root = Path::new(env!("CARGO_MANIFEST_DIR")).parent().unwrap();
for file in files {
println!("cargo:rerun-if-changed={}", file.display());
let display_path = file.strip_prefix(display_root).unwrap();
let display_path_str = display_path.display().to_string();
js_runtime
.execute_script(
&("deno:".to_string() + &display_path_str.replace('\\', "/")),
&std::fs::read_to_string(&file).unwrap(),
)
.unwrap();
}
let snapshot = js_runtime.snapshot();
let snapshot_slice: &[u8] = &*snapshot;
println!("Snapshot size: {}", snapshot_slice.len());
std::fs::write(&snapshot_path, snapshot_slice).unwrap();
println!("Snapshot written to: {} ", snapshot_path.display());
}
fn create_runtime_snapshot(snapshot_path: &Path, files: Vec<PathBuf>) {
let extensions: Vec<Extension> = vec![
deno_webidl::init(),
deno_console::init(),
deno_url::init(),
deno_tls::init(),
deno_web::init(deno_web::BlobStore::default(), Default::default()),
deno_fetch::init::<deno_fetch::NoFetchPermissions>(
"".to_owned(),
None,
None,
None,
None,
None,
),
deno_websocket::init::<deno_websocket::NoWebSocketPermissions>(
"".to_owned(),
None,
None,
),
deno_webstorage::init(None),
deno_crypto::init(None),
deno_webgpu::init(false),
deno_timers::init::<deno_timers::NoTimersPermission>(),
deno_broadcast_channel::init(
deno_broadcast_channel::InMemoryBroadcastChannel::default(),
false, // No --unstable.
),
deno_ffi::init::<deno_ffi::NoFfiPermissions>(false),
deno_net::init::<deno_net::NoNetPermissions>(
None, false, // No --unstable.
None,
),
deno_http::init(),
];
let js_runtime = JsRuntime::new(RuntimeOptions {
will_snapshot: true,
extensions,
..Default::default()
});
create_snapshot(js_runtime, snapshot_path, files);
}
fn get_js_files(d: &str) -> Vec<PathBuf> {
let manifest_dir = Path::new(env!("CARGO_MANIFEST_DIR"));
let mut js_files = std::fs::read_dir(d)
.unwrap()
.map(|dir_entry| {
let file = dir_entry.unwrap();
manifest_dir.join(file.path())
})
.filter(|path| path.extension().unwrap_or_default() == "js")
.collect::<Vec<PathBuf>>();
js_files.sort();
js_files
}
pub fn build_snapshot(runtime_snapshot_path: PathBuf) {
let js_files = get_js_files("js");
create_runtime_snapshot(&runtime_snapshot_path, js_files);
}
}
fn main() {
// To debug snapshot issues uncomment:
// op_fetch_asset::trace_serializer();
println!("cargo:rustc-env=TARGET={}", env::var("TARGET").unwrap());
println!("cargo:rustc-env=PROFILE={}", env::var("PROFILE").unwrap());
let o = PathBuf::from(env::var_os("OUT_DIR").unwrap());
// Main snapshot
let runtime_snapshot_path = o.join("CLI_SNAPSHOT.bin");
// If we're building on docs.rs we just create
// and empty snapshot file and return, because `rusty_v8`
// doesn't actually compile on docs.rs
if env::var_os("DOCS_RS").is_some() {
let snapshot_slice = &[];
std::fs::write(&runtime_snapshot_path, snapshot_slice).unwrap();
return;
}
#[cfg(not(feature = "docsrs"))]
not_docs::build_snapshot(runtime_snapshot_path)
}
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