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denoland-deno/cli/build.rs

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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
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use deno_core::CoreOp;
use deno_core::Isolate;
use deno_core::Op;
use deno_core::StartupData;
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use deno_core::ZeroCopyBuf;
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use std::collections::HashMap;
use std::env;
use std::path::PathBuf;
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fn op_fetch_asset(
custom_assets: HashMap<String, PathBuf>,
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) -> impl Fn(&[u8], Option<ZeroCopyBuf>) -> CoreOp {
move |control: &[u8], zero_copy_buf: Option<ZeroCopyBuf>| -> CoreOp {
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assert!(zero_copy_buf.is_none()); // zero_copy_buf unused in this op.
let custom_assets = custom_assets.clone();
let name = std::str::from_utf8(control).unwrap();
let asset_code = if let Some(source_code) = deno_typescript::get_asset(name)
{
source_code.to_string()
} else if let Some(asset_path) = custom_assets.get(name) {
let source_code_vec =
std::fs::read(&asset_path).expect("Asset not found");
let source_code = std::str::from_utf8(&source_code_vec).unwrap();
source_code.to_string()
} else {
panic!("op_fetch_asset bad asset {}", name)
};
let vec = asset_code.into_bytes();
Op::Sync(vec.into_boxed_slice())
}
}
fn main() {
// To debug snapshot issues uncomment:
// deno_typescript::trace_serializer();
println!(
"cargo:rustc-env=TS_VERSION={}",
deno_typescript::ts_version()
);
let c = PathBuf::from(env::var_os("CARGO_MANIFEST_DIR").unwrap());
let o = PathBuf::from(env::var_os("OUT_DIR").unwrap());
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// Main snapshot
let root_names = vec![c.join("js/main.ts")];
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let bundle_path = o.join("CLI_SNAPSHOT.js");
let snapshot_path = o.join("CLI_SNAPSHOT.bin");
let main_module_name =
deno_typescript::compile_bundle(&bundle_path, root_names)
.expect("Bundle compilation failed");
assert!(bundle_path.exists());
let runtime_isolate = &mut Isolate::new(StartupData::None, true);
deno_typescript::mksnapshot_bundle(
runtime_isolate,
&snapshot_path,
&bundle_path,
&main_module_name,
)
.expect("Failed to create snapshot");
// Compiler snapshot
let root_names = vec![c.join("js/compiler.ts")];
let bundle_path = o.join("COMPILER_SNAPSHOT.js");
let snapshot_path = o.join("COMPILER_SNAPSHOT.bin");
let mut custom_libs: HashMap<String, PathBuf> = HashMap::new();
custom_libs.insert(
"lib.deno_main.d.ts".to_string(),
c.join("js/lib.deno_main.d.ts"),
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);
custom_libs.insert(
"lib.deno_worker.d.ts".to_string(),
c.join("js/lib.deno_worker.d.ts"),
);
custom_libs.insert("lib.deno.d.ts".to_string(), c.join("js/lib.deno.d.ts"));
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let main_module_name =
deno_typescript::compile_bundle(&bundle_path, root_names)
.expect("Bundle compilation failed");
assert!(bundle_path.exists());
let runtime_isolate = &mut Isolate::new(StartupData::None, true);
runtime_isolate.register_op("fetch_asset", op_fetch_asset(custom_libs));
deno_typescript::mksnapshot_bundle_ts(
runtime_isolate,
&snapshot_path,
&bundle_path,
&main_module_name,
)
.expect("Failed to create snapshot");
}