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denoland-deno/cli/op_fetch_asset.rs
Ryan Dahl bf9930066d
Reduce size of TypeScript Compiler snapshot (#6809)
This PR is intentionally ugly. It duplicates all of the code in cli/js2/ into
cli/tsc/  ... because it's very important that we all understand that this code
is unnecessarily duplicated in our binary. I hope this ugliness provides the
motivation to clean it up.

The typescript git submodule is removed, because it's a very large repo and
contains all sorts of stuff we don't need. Instead the necessary files are
copied directly into the deno repo. Hence +200k lines.

COMPILER_SNAPSHOT.bin size
```
master         3448139
this branch    3320972
```

Fixes #6812
2020-07-22 12:03:46 -04:00

115 lines
5.2 KiB
Rust

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
// Note: this module is used both in build.rs and main.rs.
pub use deno_core::v8_set_flags;
use deno_core::CoreIsolateState;
use deno_core::Op;
use deno_core::OpDispatcher;
use deno_core::ZeroCopyBuf;
use std::collections::HashMap;
use std::path::PathBuf;
fn get_asset(name: &str) -> Option<&'static str> {
macro_rules! inc {
($e:expr) => {
Some(include_str!(concat!("dts/", $e)))
};
}
match name {
"system_loader.js" => Some(include_str!("system_loader.js")),
"system_loader_es5.js" => Some(include_str!("system_loader_es5.js")),
"bootstrap.ts" => Some("console.log(\"hello deno\");"),
"typescript.d.ts" => inc!("typescript.d.ts"),
"lib.dom.d.ts" => inc!("lib.dom.d.ts"),
"lib.dom.iterable.d.ts" => inc!("lib.dom.iterable.d.ts"),
"lib.es5.d.ts" => inc!("lib.es5.d.ts"),
"lib.es6.d.ts" => inc!("lib.es6.d.ts"),
"lib.esnext.d.ts" => inc!("lib.esnext.d.ts"),
"lib.es2020.d.ts" => inc!("lib.es2020.d.ts"),
"lib.es2020.full.d.ts" => inc!("lib.es2020.full.d.ts"),
"lib.es2019.d.ts" => inc!("lib.es2019.d.ts"),
"lib.es2019.full.d.ts" => inc!("lib.es2019.full.d.ts"),
"lib.es2018.d.ts" => inc!("lib.es2018.d.ts"),
"lib.es2018.full.d.ts" => inc!("lib.es2018.full.d.ts"),
"lib.es2017.d.ts" => inc!("lib.es2017.d.ts"),
"lib.es2017.full.d.ts" => inc!("lib.es2017.full.d.ts"),
"lib.es2016.d.ts" => inc!("lib.es2016.d.ts"),
"lib.es2016.full.d.ts" => inc!("lib.es2016.full.d.ts"),
"lib.es2015.d.ts" => inc!("lib.es2015.d.ts"),
"lib.es2015.collection.d.ts" => inc!("lib.es2015.collection.d.ts"),
"lib.es2015.core.d.ts" => inc!("lib.es2015.core.d.ts"),
"lib.es2015.generator.d.ts" => inc!("lib.es2015.generator.d.ts"),
"lib.es2015.iterable.d.ts" => inc!("lib.es2015.iterable.d.ts"),
"lib.es2015.promise.d.ts" => inc!("lib.es2015.promise.d.ts"),
"lib.es2015.proxy.d.ts" => inc!("lib.es2015.proxy.d.ts"),
"lib.es2015.reflect.d.ts" => inc!("lib.es2015.reflect.d.ts"),
"lib.es2015.symbol.d.ts" => inc!("lib.es2015.symbol.d.ts"),
"lib.es2015.symbol.wellknown.d.ts" => {
inc!("lib.es2015.symbol.wellknown.d.ts")
}
"lib.es2016.array.include.d.ts" => inc!("lib.es2016.array.include.d.ts"),
"lib.es2017.intl.d.ts" => inc!("lib.es2017.intl.d.ts"),
"lib.es2017.object.d.ts" => inc!("lib.es2017.object.d.ts"),
"lib.es2017.sharedmemory.d.ts" => inc!("lib.es2017.sharedmemory.d.ts"),
"lib.es2017.string.d.ts" => inc!("lib.es2017.string.d.ts"),
"lib.es2017.typedarrays.d.ts" => inc!("lib.es2017.typedarrays.d.ts"),
"lib.es2018.asyncgenerator.d.ts" => inc!("lib.es2018.asyncgenerator.d.ts"),
"lib.es2018.asynciterable.d.ts" => inc!("lib.es2018.asynciterable.d.ts"),
"lib.es2018.intl.d.ts" => inc!("lib.es2018.intl.d.ts"),
"lib.es2018.promise.d.ts" => inc!("lib.es2018.promise.d.ts"),
"lib.es2018.regexp.d.ts" => inc!("lib.es2018.regexp.d.ts"),
"lib.es2019.array.d.ts" => inc!("lib.es2019.array.d.ts"),
"lib.es2019.object.d.ts" => inc!("lib.es2019.object.d.ts"),
"lib.es2019.string.d.ts" => inc!("lib.es2019.string.d.ts"),
"lib.es2019.symbol.d.ts" => inc!("lib.es2019.symbol.d.ts"),
"lib.es2020.bigint.d.ts" => inc!("lib.es2020.bigint.d.ts"),
"lib.es2020.promise.d.ts" => inc!("lib.es2020.promise.d.ts"),
"lib.es2020.string.d.ts" => inc!("lib.es2020.string.d.ts"),
"lib.es2020.symbol.wellknown.d.ts" => {
inc!("lib.es2020.symbol.wellknown.d.ts")
}
"lib.esnext.array.d.ts" => inc!("lib.esnext.array.d.ts"),
"lib.esnext.asynciterable.d.ts" => inc!("lib.esnext.asynciterable.d.ts"),
"lib.esnext.bigint.d.ts" => inc!("lib.esnext.bigint.d.ts"),
"lib.esnext.intl.d.ts" => inc!("lib.esnext.intl.d.ts"),
"lib.esnext.promise.d.ts" => inc!("lib.esnext.promise.d.ts"),
"lib.esnext.string.d.ts" => inc!("lib.esnext.string.d.ts"),
"lib.esnext.symbol.d.ts" => inc!("lib.esnext.symbol.d.ts"),
"lib.scripthost.d.ts" => inc!("lib.scripthost.d.ts"),
"lib.webworker.d.ts" => inc!("lib.webworker.d.ts"),
"lib.webworker.importscripts.d.ts" => {
inc!("lib.webworker.importscripts.d.ts")
}
_ => None,
}
}
/// Warning: Returns a non-JSON op dispatcher. Must be manually attached to
/// CoreIsolate.
pub fn op_fetch_asset<S: ::std::hash::BuildHasher>(
custom_assets: HashMap<String, PathBuf, S>,
) -> impl OpDispatcher {
for (_, path) in custom_assets.iter() {
println!("cargo:rerun-if-changed={}", path.display());
}
move |_state: &mut CoreIsolateState,
zero_copy_bufs: &mut [ZeroCopyBuf]|
-> Op {
assert_eq!(zero_copy_bufs.len(), 1, "Invalid number of arguments");
let name = std::str::from_utf8(&zero_copy_bufs[0]).unwrap();
let asset_code = if let Some(source_code) = 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!("fetch_asset bad asset {}", name)
};
let vec = asset_code.into_bytes();
deno_core::Op::Sync(vec.into_boxed_slice())
}
}