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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
mod op_fetch_asset;
use deno_core::JsRuntime;
use deno_core::RuntimeOptions;
use std::collections::HashMap;
use std::env;
use std::path::Path;
use std::path::PathBuf;
fn create_snapshot(
mut js_runtime: JsRuntime,
snapshot_path: &Path,
files: Vec<PathBuf>,
) {
deno_web::init(&mut js_runtime);
deno_fetch::init(&mut js_runtime);
// 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(
&("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 js_runtime = JsRuntime::new(RuntimeOptions {
will_snapshot: true,
..Default::default()
});
create_snapshot(js_runtime, snapshot_path, files);
}
fn create_compiler_snapshot(
snapshot_path: &Path,
files: Vec<PathBuf>,
cwd: &Path,
) {
let mut custom_libs: HashMap<String, PathBuf> = HashMap::new();
custom_libs
.insert("lib.deno.web.d.ts".to_string(), deno_web::get_declaration());
custom_libs.insert(
"lib.deno.fetch.d.ts".to_string(),
deno_fetch::get_declaration(),
);
custom_libs.insert(
"lib.deno.window.d.ts".to_string(),
cwd.join("dts/lib.deno.window.d.ts"),
);
custom_libs.insert(
"lib.deno.worker.d.ts".to_string(),
cwd.join("dts/lib.deno.worker.d.ts"),
);
custom_libs.insert(
"lib.deno.shared_globals.d.ts".to_string(),
cwd.join("dts/lib.deno.shared_globals.d.ts"),
);
custom_libs.insert(
"lib.deno.ns.d.ts".to_string(),
cwd.join("dts/lib.deno.ns.d.ts"),
);
custom_libs.insert(
"lib.deno.unstable.d.ts".to_string(),
cwd.join("dts/lib.deno.unstable.d.ts"),
);
let mut js_runtime = JsRuntime::new(RuntimeOptions {
will_snapshot: true,
..Default::default()
});
js_runtime.register_op(
"op_fetch_asset",
op_fetch_asset::op_fetch_asset(custom_libs),
);
create_snapshot(js_runtime, snapshot_path, files);
}
fn ts_version() -> String {
std::fs::read_to_string("tsc/00_typescript.js")
.unwrap()
.lines()
.find(|l| l.contains("ts.version = "))
.expect(
"Failed to find the pattern `ts.version = ` in typescript source code",
)
.chars()
.skip_while(|c| !char::is_numeric(*c))
.take_while(|c| *c != '"')
.collect::<String>()
}
fn main() {
// Don't build V8 if "cargo doc" is being run. This is to support docs.rs.
if env::var_os("RUSTDOCFLAGS").is_some() {
return;
}
// To debug snapshot issues uncomment:
// op_fetch_asset::trace_serializer();
println!("cargo:rustc-env=TS_VERSION={}", ts_version());
println!(
"cargo:rustc-env=DENO_WEB_LIB_PATH={}",
deno_web::get_declaration().display()
);
println!(
"cargo:rustc-env=DENO_FETCH_LIB_PATH={}",
deno_fetch::get_declaration().display()
);
println!(
"cargo:rustc-env=TARGET={}",
std::env::var("TARGET").unwrap()
);
let c = PathBuf::from(env::var_os("CARGO_MANIFEST_DIR").unwrap());
let o = PathBuf::from(env::var_os("OUT_DIR").unwrap());
// Main snapshot
let runtime_snapshot_path = o.join("CLI_SNAPSHOT.bin");
let compiler_snapshot_path = o.join("COMPILER_SNAPSHOT.bin");
let js_files = get_js_files("rt");
create_runtime_snapshot(&runtime_snapshot_path, js_files);
let js_files = get_js_files("tsc");
create_compiler_snapshot(&compiler_snapshot_path, js_files, &c);
#[cfg(target_os = "windows")]
{
let mut res = winres::WindowsResource::new();
res.set_icon("deno.ico");
res.set_language(winapi::um::winnt::MAKELANGID(
winapi::um::winnt::LANG_ENGLISH,
winapi::um::winnt::SUBLANG_ENGLISH_US,
));
res.compile().unwrap();
}
}
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
}
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