mirror of
https://github.com/denoland/deno.git
synced 2024-12-22 15:24:46 -05:00
328 lines
9.1 KiB
Rust
328 lines
9.1 KiB
Rust
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
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use deno_runtime::deno_broadcast_channel;
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use deno_runtime::deno_console;
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use deno_runtime::deno_crypto;
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use deno_runtime::deno_fetch;
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use deno_runtime::deno_net;
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use deno_runtime::deno_url;
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use deno_runtime::deno_web;
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use deno_runtime::deno_websocket;
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use deno_runtime::deno_webstorage;
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use deno_runtime::deno_core::error::custom_error;
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use deno_runtime::deno_core::error::AnyError;
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use deno_runtime::deno_core::op;
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use deno_runtime::deno_core::serde::Deserialize;
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use deno_runtime::deno_core::serde_json::json;
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use deno_runtime::deno_core::serde_json::Value;
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use deno_runtime::deno_core::Extension;
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use deno_runtime::deno_core::JsRuntime;
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use deno_runtime::deno_core::OpState;
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use deno_runtime::deno_core::RuntimeOptions;
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use regex::Regex;
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use std::collections::HashMap;
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use std::convert::TryFrom;
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use std::env;
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use std::path::Path;
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use std::path::PathBuf;
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pub fn create_tsc_snapshot(snapshot_path: &Path) {
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let mut js_runtime = JsRuntime::new(RuntimeOptions {
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will_snapshot: true,
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extensions: vec![tsc_snapshot_init()],
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..Default::default()
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});
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load_js_files(&mut js_runtime);
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write_snapshot(js_runtime, snapshot_path);
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}
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// TODO(bartlomieju): this module contains a lot of duplicated
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// logic with `build_runtime.rs`
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fn write_snapshot(mut js_runtime: JsRuntime, snapshot_path: &Path) {
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let snapshot = js_runtime.snapshot();
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let snapshot_slice: &[u8] = &*snapshot;
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println!("Snapshot size: {}", snapshot_slice.len());
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let compressed_snapshot_with_size = {
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let mut vec = vec![];
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vec.extend_from_slice(
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&u32::try_from(snapshot.len())
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.expect("snapshot larger than 4gb")
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.to_le_bytes(),
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);
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vec.extend_from_slice(
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&zstd::bulk::compress(snapshot_slice, 22)
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.expect("snapshot compression failed"),
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);
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vec
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};
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println!(
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"Snapshot compressed size: {}",
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compressed_snapshot_with_size.len()
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);
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std::fs::write(&snapshot_path, compressed_snapshot_with_size).unwrap();
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println!("Snapshot written to: {} ", snapshot_path.display());
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}
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#[derive(Debug, Deserialize)]
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struct LoadArgs {
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/// The fully qualified specifier that should be loaded.
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specifier: String,
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}
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fn tsc_snapshot_init() -> Extension {
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// libs that are being provided by op crates.
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let mut op_crate_libs = HashMap::new();
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op_crate_libs.insert("deno.console", deno_console::get_declaration());
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op_crate_libs.insert("deno.url", deno_url::get_declaration());
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op_crate_libs.insert("deno.web", deno_web::get_declaration());
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op_crate_libs.insert("deno.fetch", deno_fetch::get_declaration());
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op_crate_libs.insert("deno.webgpu", deno_webgpu_get_declaration());
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op_crate_libs.insert("deno.websocket", deno_websocket::get_declaration());
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op_crate_libs.insert("deno.webstorage", deno_webstorage::get_declaration());
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op_crate_libs.insert("deno.crypto", deno_crypto::get_declaration());
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op_crate_libs.insert(
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"deno.broadcast_channel",
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deno_broadcast_channel::get_declaration(),
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);
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op_crate_libs.insert("deno.net", deno_net::get_declaration());
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// ensure we invalidate the build properly.
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for (_, path) in op_crate_libs.iter() {
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println!("cargo:rerun-if-changed={}", path.display());
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}
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// libs that should be loaded into the isolate before snapshotting.
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let libs = vec![
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// Deno custom type libraries
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"deno.window",
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"deno.worker",
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"deno.shared_globals",
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"deno.ns",
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"deno.unstable",
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// Deno built-in type libraries
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"es5",
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"es2015.collection",
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"es2015.core",
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"es2015",
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"es2015.generator",
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"es2015.iterable",
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"es2015.promise",
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"es2015.proxy",
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"es2015.reflect",
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"es2015.symbol",
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"es2015.symbol.wellknown",
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"es2016.array.include",
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"es2016",
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"es2017",
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"es2017.intl",
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"es2017.object",
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"es2017.sharedmemory",
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"es2017.string",
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"es2017.typedarrays",
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"es2018.asyncgenerator",
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"es2018.asynciterable",
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"es2018",
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"es2018.intl",
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"es2018.promise",
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"es2018.regexp",
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"es2019.array",
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"es2019",
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"es2019.object",
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"es2019.string",
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"es2019.symbol",
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"es2020.bigint",
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"es2020",
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"es2020.date",
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"es2020.intl",
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"es2020.number",
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"es2020.promise",
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"es2020.sharedmemory",
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"es2020.string",
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"es2020.symbol.wellknown",
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"es2021",
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"es2021.intl",
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"es2021.promise",
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"es2021.string",
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"es2021.weakref",
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"es2022",
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"es2022.array",
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"es2022.error",
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"es2022.intl",
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"es2022.object",
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"es2022.string",
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"esnext",
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"esnext.array",
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"esnext.intl",
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];
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let cli_dir = cli_dir();
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let path_dts = cli_dir.join("dts");
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// ensure we invalidate the build properly.
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for name in libs.iter() {
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println!(
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"cargo:rerun-if-changed={}",
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path_dts.join(format!("lib.{}.d.ts", name)).display()
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);
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}
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// create a copy of the vector that includes any op crate libs to be passed
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// to the JavaScript compiler to build into the snapshot
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let mut build_libs = libs.clone();
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for (op_lib, _) in op_crate_libs.iter() {
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build_libs.push(op_lib.to_owned());
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}
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#[op]
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fn op_build_info(state: &mut OpState) -> Value {
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let build_specifier = "asset:///bootstrap.ts";
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let build_libs = state.borrow::<Vec<&str>>();
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json!({
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"buildSpecifier": build_specifier,
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"libs": build_libs,
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})
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}
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#[op]
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fn op_cwd() -> String {
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"cache:///".into()
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}
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#[op]
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fn op_exists() -> bool {
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false
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}
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#[op]
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fn op_script_version(
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_state: &mut OpState,
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_args: Value,
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) -> Result<Option<String>, AnyError> {
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Ok(Some("1".to_string()))
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}
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#[op]
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// using the same op that is used in `tsc.rs` for loading modules and reading
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// files, but a slightly different implementation at build time.
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fn op_load(state: &mut OpState, args: LoadArgs) -> Result<Value, AnyError> {
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let op_crate_libs = state.borrow::<HashMap<&str, PathBuf>>();
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let path_dts = state.borrow::<PathBuf>();
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let re_asset =
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Regex::new(r"asset:/{3}lib\.(\S+)\.d\.ts").expect("bad regex");
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let build_specifier = "asset:///bootstrap.ts";
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// we need a basic file to send to tsc to warm it up.
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if args.specifier == build_specifier {
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Ok(json!({
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"data": r#"console.log("hello deno!");"#,
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"version": "1",
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// this corresponds to `ts.ScriptKind.TypeScript`
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"scriptKind": 3
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}))
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// specifiers come across as `asset:///lib.{lib_name}.d.ts` and we need to
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// parse out just the name so we can lookup the asset.
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} else if let Some(caps) = re_asset.captures(&args.specifier) {
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if let Some(lib) = caps.get(1).map(|m| m.as_str()) {
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// if it comes from an op crate, we were supplied with the path to the
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// file.
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let path = if let Some(op_crate_lib) = op_crate_libs.get(lib) {
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PathBuf::from(op_crate_lib).canonicalize().unwrap()
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// otherwise we are will generate the path ourself
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} else {
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path_dts.join(format!("lib.{}.d.ts", lib))
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};
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let data = std::fs::read_to_string(path)?;
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Ok(json!({
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"data": data,
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"version": "1",
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// this corresponds to `ts.ScriptKind.TypeScript`
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"scriptKind": 3
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}))
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} else {
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Err(custom_error(
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"InvalidSpecifier",
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format!("An invalid specifier was requested: {}", args.specifier),
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))
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}
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} else {
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Err(custom_error(
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"InvalidSpecifier",
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format!("An invalid specifier was requested: {}", args.specifier),
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))
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}
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}
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Extension::builder()
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.ops(vec![
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op_build_info::decl(),
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op_cwd::decl(),
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op_exists::decl(),
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op_load::decl(),
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op_script_version::decl(),
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])
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.state(move |state| {
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state.put(op_crate_libs.clone());
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state.put(build_libs.clone());
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state.put(path_dts.clone());
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Ok(())
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})
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.build()
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}
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fn deno_webgpu_get_declaration() -> PathBuf {
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cli_dir().join("dts").join("lib.deno_webgpu.d.ts")
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}
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fn load_js_files(js_runtime: &mut JsRuntime) {
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let js_files = get_js_files(tsc_dir());
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let cwd = cli_dir();
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let display_root = cwd.parent().unwrap();
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for file in js_files {
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println!("cargo:rerun-if-changed={}", file.display());
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let display_path = file.strip_prefix(display_root).unwrap();
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let display_path_str = display_path.display().to_string();
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js_runtime
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.execute_script(
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&("deno:".to_string() + &display_path_str.replace('\\', "/")),
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&std::fs::read_to_string(&file).unwrap(),
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)
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.unwrap();
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}
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}
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fn root_dir() -> PathBuf {
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// TODO(nayeemrmn): https://github.com/rust-lang/cargo/issues/3946 to get the workspace root.
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Path::new(env!("CARGO_MANIFEST_DIR"))
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.join("..")
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.canonicalize()
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.unwrap()
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}
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fn cli_dir() -> PathBuf {
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root_dir().join("cli")
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}
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fn tsc_dir() -> PathBuf {
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cli_dir().join("tsc")
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}
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fn get_js_files(dir: PathBuf) -> Vec<PathBuf> {
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let mut js_files = std::fs::read_dir(dir.clone())
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.unwrap()
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.map(|dir_entry| {
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let file = dir_entry.unwrap();
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dir.join(file.path())
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})
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.filter(|path| path.extension().unwrap_or_default() == "js")
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.collect::<Vec<PathBuf>>();
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js_files.sort();
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js_files
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}
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