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denoland-deno/cli/tsc.rs
2020-06-26 08:23:25 -04:00

1630 lines
45 KiB
Rust

// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
use crate::colors;
use crate::diagnostics::Diagnostic;
use crate::diagnostics::DiagnosticItem;
use crate::disk_cache::DiskCache;
use crate::doc::Location;
use crate::file_fetcher::SourceFile;
use crate::file_fetcher::SourceFileFetcher;
use crate::global_state::GlobalState;
use crate::import_map::ImportMap;
use crate::module_graph::ModuleGraph;
use crate::module_graph::ModuleGraphLoader;
use crate::msg;
use crate::msg::MediaType;
use crate::op_error::OpError;
use crate::ops;
use crate::permissions::Permissions;
use crate::source_maps::SourceMapGetter;
use crate::startup_data;
use crate::state::State;
use crate::swc_common::comments::CommentKind;
use crate::swc_common::Span;
use crate::swc_ecma_ast;
use crate::swc_util::AstParser;
use crate::swc_util::SwcDiagnosticBuffer;
use crate::version;
use crate::web_worker::WebWorker;
use crate::worker::WorkerEvent;
use core::task::Context;
use deno_core::Buf;
use deno_core::ErrBox;
use deno_core::ModuleSpecifier;
use deno_core::StartupData;
use futures::future::Either;
use futures::future::Future;
use futures::future::FutureExt;
use log::debug;
use log::info;
use log::Level;
use regex::Regex;
use serde::Deserialize;
use serde::Serialize;
use serde_json::json;
use serde_json::Value;
use sourcemap::SourceMap;
use std::collections::HashMap;
use std::collections::HashSet;
use std::fs;
use std::io;
use std::ops::Deref;
use std::ops::DerefMut;
use std::path::PathBuf;
use std::pin::Pin;
use std::str;
use std::sync::atomic::Ordering;
use std::sync::Arc;
use std::sync::Mutex;
use std::task::Poll;
use swc_ecma_visit::Node;
use swc_ecma_visit::Visit;
use url::Url;
pub const AVAILABLE_LIBS: &[&str] = &[
"deno.ns",
"deno.window",
"deno.worker",
"deno.shared_globals",
"deno.unstable",
"dom",
"dom.iterable",
"es5",
"es6",
"esnext",
"es2020",
"es2020.full",
"es2019",
"es2019.full",
"es2018",
"es2018.full",
"es2017",
"es2017.full",
"es2016",
"es2016.full",
"es2015",
"es2015.collection",
"es2015.core",
"es2015.generator",
"es2015.iterable",
"es2015.promise",
"es2015.proxy",
"es2015.reflect",
"es2015.symbol",
"es2015.symbol.wellknown",
"es2016.array.include",
"es2017.intl",
"es2017.object",
"es2017.sharedmemory",
"es2017.string",
"es2017.typedarrays",
"es2018.asyncgenerator",
"es2018.asynciterable",
"es2018.intl",
"es2018.promise",
"es2018.regexp",
"es2019.array",
"es2019.object",
"es2019.string",
"es2019.symbol",
"es2020.bigint",
"es2020.promise",
"es2020.string",
"es2020.symbol.wellknown",
"esnext.array",
"esnext.asynciterable",
"esnext.bigint",
"esnext.intl",
"esnext.promise",
"esnext.string",
"esnext.symbol",
"scripthost",
"webworker",
"webworker.importscripts",
];
#[derive(Debug, Clone)]
pub struct CompiledModule {
pub code: String,
pub name: String,
}
pub struct CompilerWorker(WebWorker);
impl CompilerWorker {
pub fn new(name: String, startup_data: StartupData, state: State) -> Self {
let state_ = state.clone();
let mut worker = WebWorker::new(name, startup_data, state_, false);
{
let isolate = &mut worker.isolate;
ops::compiler::init(isolate, &state);
}
Self(worker)
}
}
impl Deref for CompilerWorker {
type Target = WebWorker;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl DerefMut for CompilerWorker {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}
impl Future for CompilerWorker {
type Output = Result<(), ErrBox>;
fn poll(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
let inner = self.get_mut();
inner.0.poll_unpin(cx)
}
}
// TODO(bartlomieju): use JSONC parser from dprint instead of Regex
lazy_static! {
static ref CHECK_JS_RE: Regex =
Regex::new(r#""checkJs"\s*?:\s*?true"#).unwrap();
}
/// Create a new worker with snapshot of TS compiler and setup compiler's
/// runtime.
fn create_compiler_worker(
global_state: GlobalState,
permissions: Permissions,
) -> CompilerWorker {
// TODO(bartlomieju): these $deno$ specifiers should be unified for all subcommands
// like 'eval', 'repl'
let entry_point =
ModuleSpecifier::resolve_url_or_path("./__$deno$ts_compiler.ts").unwrap();
let worker_state = State::new(
global_state.clone(),
Some(permissions),
entry_point,
None,
true,
)
.expect("Unable to create worker state");
// TODO(bartlomieju): this metric is never used anywhere
// Count how many times we start the compiler worker.
global_state.compiler_starts.fetch_add(1, Ordering::SeqCst);
let mut worker = CompilerWorker::new(
"TS".to_string(),
startup_data::compiler_isolate_init(),
worker_state,
);
worker.execute("bootstrap.tsCompilerRuntime()").unwrap();
worker
}
#[derive(Clone)]
pub enum TargetLib {
Main,
Worker,
}
/// Struct which represents the state of the compiler
/// configuration where the first is canonical name for the configuration file,
/// second is a vector of the bytes of the contents of the configuration file,
/// third is bytes of the hash of contents.
#[derive(Clone)]
pub struct CompilerConfig {
pub path: Option<PathBuf>,
pub content: Option<Vec<u8>>,
pub hash: Vec<u8>,
pub compile_js: bool,
}
impl CompilerConfig {
/// Take the passed flag and resolve the file name relative to the cwd.
pub fn load(config_path: Option<String>) -> Result<Self, ErrBox> {
let config_file = match &config_path {
Some(config_file_name) => {
debug!("Compiler config file: {}", config_file_name);
let cwd = std::env::current_dir().unwrap();
Some(cwd.join(config_file_name))
}
_ => None,
};
// Convert the PathBuf to a canonicalized string. This is needed by the
// compiler to properly deal with the configuration.
let config_path = match &config_file {
Some(config_file) => Some(config_file.canonicalize().map_err(|_| {
io::Error::new(
io::ErrorKind::InvalidInput,
format!(
"Could not find the config file: {}",
config_file.to_string_lossy()
),
)
})),
_ => None,
};
// Load the contents of the configuration file
let config = match &config_file {
Some(config_file) => {
debug!("Attempt to load config: {}", config_file.to_str().unwrap());
let config = fs::read(&config_file)?;
Some(config)
}
_ => None,
};
let config_hash = match &config {
Some(bytes) => bytes.clone(),
_ => b"".to_vec(),
};
// If `checkJs` is set to true in `compilerOptions` then we're gonna be compiling
// JavaScript files as well
let compile_js = if let Some(config_content) = config.clone() {
let config_str = std::str::from_utf8(&config_content)?;
CHECK_JS_RE.is_match(config_str)
} else {
false
};
let ts_config = Self {
path: config_path.unwrap_or_else(|| Ok(PathBuf::new())).ok(),
content: config,
hash: config_hash,
compile_js,
};
Ok(ts_config)
}
}
/// Information associated with compiled file in cache.
/// version_hash is used to validate versions of the file
/// and could be used to remove stale file in cache.
#[derive(Deserialize, Serialize)]
pub struct CompiledFileMetadata {
pub version_hash: String,
}
impl CompiledFileMetadata {
pub fn from_json_string(
metadata_string: String,
) -> Result<Self, serde_json::Error> {
serde_json::from_str::<Self>(&metadata_string)
}
pub fn to_json_string(&self) -> Result<String, serde_json::Error> {
serde_json::to_string(self)
}
}
/// Emit a SHA256 hash based on source code, deno version and TS config.
/// Used to check if a recompilation for source code is needed.
pub fn source_code_version_hash(
source_code: &[u8],
version: &str,
config_hash: &[u8],
) -> String {
crate::checksum::gen(vec![source_code, version.as_bytes(), config_hash])
}
fn maybe_log_stats(maybe_stats: Option<Vec<Stat>>) {
if let Some(stats) = maybe_stats {
debug!("DEBUG - Compilation Statistics:");
for stat in stats {
debug!("{}: {}", stat.key, stat.value);
}
}
}
pub struct TsCompilerInner {
pub file_fetcher: SourceFileFetcher,
pub config: CompilerConfig,
pub disk_cache: DiskCache,
/// Set of all URLs that have been compiled. This prevents double
/// compilation of module.
pub compiled: Mutex<HashSet<Url>>,
/// This setting is controlled by `--reload` flag. Unless the flag
/// is provided disk cache is used.
pub use_disk_cache: bool,
/// This setting is controlled by `compilerOptions.checkJs`
pub compile_js: bool,
}
#[derive(Clone)]
pub struct TsCompiler(Arc<TsCompilerInner>);
impl Deref for TsCompiler {
type Target = TsCompilerInner;
fn deref(&self) -> &Self::Target {
&self.0
}
}
#[derive(Deserialize, Debug)]
#[serde(rename_all = "camelCase")]
struct Stat {
key: String,
value: f64,
}
#[derive(Deserialize)]
#[serde(rename_all = "camelCase")]
struct EmittedSource {
filename: String,
contents: String,
}
#[derive(Deserialize)]
#[serde(rename_all = "camelCase")]
struct BundleResponse {
diagnostics: Diagnostic,
bundle_output: Option<String>,
stats: Option<Vec<Stat>>,
}
#[derive(Deserialize)]
#[serde(rename_all = "camelCase")]
struct CompileResponse {
diagnostics: Diagnostic,
emit_map: HashMap<String, EmittedSource>,
build_info: Option<String>,
stats: Option<Vec<Stat>>,
}
// TODO(bartlomieju): possible deduplicate once TS refactor is stabilized
#[derive(Deserialize)]
#[serde(rename_all = "camelCase")]
#[allow(unused)]
struct RuntimeBundleResponse {
diagnostics: Vec<DiagnosticItem>,
output: String,
}
#[derive(Deserialize)]
#[serde(rename_all = "camelCase")]
struct RuntimeCompileResponse {
diagnostics: Vec<DiagnosticItem>,
emit_map: HashMap<String, EmittedSource>,
}
impl TsCompiler {
pub fn new(
file_fetcher: SourceFileFetcher,
disk_cache: DiskCache,
use_disk_cache: bool,
config_path: Option<String>,
) -> Result<Self, ErrBox> {
let config = CompilerConfig::load(config_path)?;
Ok(TsCompiler(Arc::new(TsCompilerInner {
file_fetcher,
disk_cache,
compile_js: config.compile_js,
config,
compiled: Mutex::new(HashSet::new()),
use_disk_cache,
})))
}
/// Mark given module URL as compiled to avoid multiple compilations of same
/// module in single run.
fn mark_compiled(&self, url: &Url) {
let mut c = self.compiled.lock().unwrap();
c.insert(url.clone());
}
fn has_compiled(&self, url: &Url) -> bool {
let c = self.compiled.lock().unwrap();
c.contains(url)
}
/// Check if there is compiled source in cache that is valid and can be used
/// again.
fn has_compiled_source(
&self,
file_fetcher: &SourceFileFetcher,
url: &Url,
) -> bool {
let specifier = ModuleSpecifier::from(url.clone());
if let Some(source_file) = file_fetcher
.fetch_cached_source_file(&specifier, Permissions::allow_all())
{
if let Some(metadata) = self.get_metadata(&url) {
// Compare version hashes
let version_hash_to_validate = source_code_version_hash(
&source_file.source_code,
version::DENO,
&self.config.hash,
);
if metadata.version_hash == version_hash_to_validate {
return true;
}
}
}
false
}
fn has_valid_cache(
&self,
file_fetcher: &SourceFileFetcher,
url: &Url,
build_info: &Option<String>,
) -> Result<bool, ErrBox> {
if let Some(build_info_str) = build_info.as_ref() {
let build_inf_json: Value = serde_json::from_str(build_info_str)?;
let program_val = build_inf_json["program"].as_object().unwrap();
let file_infos = program_val["fileInfos"].as_object().unwrap();
if !self.has_compiled_source(file_fetcher, url) {
return Ok(false);
}
for (filename, file_info) in file_infos.iter() {
if filename.starts_with("asset://") {
continue;
}
let url = Url::parse(&filename).expect("Filename is not a valid url");
let specifier = ModuleSpecifier::from(url);
if let Some(source_file) = file_fetcher
.fetch_cached_source_file(&specifier, Permissions::allow_all())
{
let existing_hash = crate::checksum::gen(vec![
&source_file.source_code,
version::DENO.as_bytes(),
]);
let expected_hash =
file_info["version"].as_str().unwrap().to_string();
if existing_hash != expected_hash {
// hashes don't match, somethings changed
return Ok(false);
}
} else {
// no cached source file
return Ok(false);
}
}
} else {
// no build info
return Ok(false);
}
Ok(true)
}
/// Asynchronously compile module and all it's dependencies.
///
/// This method compiled every module at most once.
///
/// If `--reload` flag was provided then compiler will not on-disk cache and
/// force recompilation.
///
/// If compilation is required then new V8 worker is spawned with fresh TS
/// compiler.
pub async fn compile_module_graph(
&self,
global_state: GlobalState,
source_file: &SourceFile,
target: TargetLib,
permissions: Permissions,
module_graph: ModuleGraph,
allow_js: bool,
) -> Result<(), ErrBox> {
let module_url = source_file.url.clone();
let build_info_key = self
.disk_cache
.get_cache_filename_with_extension(&module_url, "buildinfo");
let build_info = match self.disk_cache.get(&build_info_key) {
Ok(bytes) => Some(String::from_utf8(bytes)?),
Err(_) => None,
};
// Only use disk cache if `--reload` flag was not used or this file has
// already been compiled during current process lifetime.
if (self.use_disk_cache || self.has_compiled(&source_file.url))
&& self.has_valid_cache(
&global_state.file_fetcher,
&source_file.url,
&build_info,
)?
{
return Ok(());
}
let module_graph_json =
serde_json::to_value(module_graph).expect("Failed to serialize data");
let target = match target {
TargetLib::Main => "main",
TargetLib::Worker => "worker",
};
let root_names = vec![module_url.to_string()];
let unstable = global_state.flags.unstable;
let performance = match global_state.flags.log_level {
Some(Level::Debug) => true,
_ => false,
};
let compiler_config = self.config.clone();
let cwd = std::env::current_dir().unwrap();
let j = match (compiler_config.path, compiler_config.content) {
(Some(config_path), Some(config_data)) => json!({
"type": msg::CompilerRequestType::Compile,
"allowJs": allow_js,
"target": target,
"rootNames": root_names,
"unstable": unstable,
"performance": performance,
"configPath": config_path,
"config": str::from_utf8(&config_data).unwrap(),
"cwd": cwd,
"sourceFileMap": module_graph_json,
"buildInfo": if self.use_disk_cache { build_info } else { None },
}),
_ => json!({
"type": msg::CompilerRequestType::Compile,
"allowJs": allow_js,
"target": target,
"rootNames": root_names,
"unstable": unstable,
"performance": performance,
"cwd": cwd,
"sourceFileMap": module_graph_json,
"buildInfo": if self.use_disk_cache { build_info } else { None },
}),
};
let req_msg = j.to_string().into_boxed_str().into_boxed_bytes();
// TODO(bartlomieju): lift this call up - TSC shouldn't print anything
info!(
"{} {}",
colors::green("Compile".to_string()),
module_url.to_string()
);
let msg =
execute_in_same_thread(global_state.clone(), permissions, req_msg)
.await?;
let json_str = std::str::from_utf8(&msg).unwrap();
let compile_response: CompileResponse = serde_json::from_str(json_str)?;
if !compile_response.diagnostics.items.is_empty() {
return Err(ErrBox::from(compile_response.diagnostics));
}
maybe_log_stats(compile_response.stats);
if let Some(build_info) = compile_response.build_info {
self.cache_build_info(&module_url, build_info)?;
}
self.cache_emitted_files(compile_response.emit_map)?;
Ok(())
}
/// Get associated `CompiledFileMetadata` for given module if it exists.
pub fn get_metadata(&self, url: &Url) -> Option<CompiledFileMetadata> {
// Try to load cached version:
// 1. check if there's 'meta' file
let cache_key = self
.disk_cache
.get_cache_filename_with_extension(url, "meta");
if let Ok(metadata_bytes) = self.disk_cache.get(&cache_key) {
if let Ok(metadata) = std::str::from_utf8(&metadata_bytes) {
if let Ok(read_metadata) =
CompiledFileMetadata::from_json_string(metadata.to_string())
{
return Some(read_metadata);
}
}
}
None
}
fn cache_build_info(
&self,
url: &Url,
build_info: String,
) -> std::io::Result<()> {
let js_key = self
.disk_cache
.get_cache_filename_with_extension(url, "buildinfo");
self.disk_cache.set(&js_key, build_info.as_bytes())?;
Ok(())
}
fn cache_emitted_files(
&self,
emit_map: HashMap<String, EmittedSource>,
) -> std::io::Result<()> {
for (emitted_name, source) in emit_map.iter() {
let specifier = ModuleSpecifier::resolve_url(&source.filename)
.expect("Should be a valid module specifier");
let source_file = self
.file_fetcher
.fetch_cached_source_file(&specifier, Permissions::allow_all())
.expect("Source file not found");
// NOTE: JavaScript files are only cached to disk if `checkJs`
// option in on
if source_file.media_type == msg::MediaType::JavaScript
&& !self.compile_js
{
continue;
}
if emitted_name.ends_with(".map") {
self.cache_source_map(&specifier, &source.contents)?;
} else if emitted_name.ends_with(".js") {
self.cache_compiled_file(&specifier, source_file, &source.contents)?;
} else {
panic!("Trying to cache unknown file type {}", emitted_name);
}
}
Ok(())
}
pub fn get_compiled_module(
&self,
module_url: &Url,
) -> Result<CompiledModule, ErrBox> {
let compiled_source_file = self.get_compiled_source_file(module_url)?;
let compiled_module = CompiledModule {
code: str::from_utf8(&compiled_source_file.source_code)
.unwrap()
.to_string(),
name: module_url.to_string(),
};
Ok(compiled_module)
}
/// Return compiled JS file for given TS module.
// TODO: ideally we shouldn't construct SourceFile by hand, but it should be delegated to
// SourceFileFetcher
pub fn get_compiled_source_file(
&self,
module_url: &Url,
) -> Result<SourceFile, ErrBox> {
let cache_key = self
.disk_cache
.get_cache_filename_with_extension(&module_url, "js");
let compiled_code = self.disk_cache.get(&cache_key)?;
let compiled_code_filename = self.disk_cache.location.join(cache_key);
debug!("compiled filename: {:?}", compiled_code_filename);
let compiled_module = SourceFile {
url: module_url.clone(),
filename: compiled_code_filename,
media_type: msg::MediaType::JavaScript,
source_code: compiled_code,
types_header: None,
};
Ok(compiled_module)
}
/// Save compiled JS file for given TS module to on-disk cache.
///
/// Along compiled file a special metadata file is saved as well containing
/// hash that can be validated to avoid unnecessary recompilation.
fn cache_compiled_file(
&self,
module_specifier: &ModuleSpecifier,
source_file: SourceFile,
contents: &str,
) -> std::io::Result<()> {
let js_key = self
.disk_cache
.get_cache_filename_with_extension(module_specifier.as_url(), "js");
self.disk_cache.set(&js_key, contents.as_bytes())?;
self.mark_compiled(module_specifier.as_url());
let version_hash = source_code_version_hash(
&source_file.source_code,
version::DENO,
&self.config.hash,
);
let compiled_file_metadata = CompiledFileMetadata { version_hash };
let meta_key = self
.disk_cache
.get_cache_filename_with_extension(module_specifier.as_url(), "meta");
self.disk_cache.set(
&meta_key,
compiled_file_metadata.to_json_string()?.as_bytes(),
)
}
/// Return associated source map file for given TS module.
// TODO: ideally we shouldn't construct SourceFile by hand, but it should be delegated to
// SourceFileFetcher
pub fn get_source_map_file(
&self,
module_specifier: &ModuleSpecifier,
) -> Result<SourceFile, ErrBox> {
let cache_key = self
.disk_cache
.get_cache_filename_with_extension(module_specifier.as_url(), "js.map");
let source_code = self.disk_cache.get(&cache_key)?;
let source_map_filename = self.disk_cache.location.join(cache_key);
debug!("source map filename: {:?}", source_map_filename);
let source_map_file = SourceFile {
url: module_specifier.as_url().to_owned(),
filename: source_map_filename,
media_type: msg::MediaType::JavaScript,
source_code,
types_header: None,
};
Ok(source_map_file)
}
/// Save source map file for given TS module to on-disk cache.
fn cache_source_map(
&self,
module_specifier: &ModuleSpecifier,
contents: &str,
) -> std::io::Result<()> {
let js_key = self
.disk_cache
.get_cache_filename_with_extension(module_specifier.as_url(), "js");
let js_path = self.disk_cache.location.join(js_key);
let js_file_url =
Url::from_file_path(js_path).expect("Bad file URL for file");
let source_map_key = self
.disk_cache
.get_cache_filename_with_extension(module_specifier.as_url(), "js.map");
let mut sm = SourceMap::from_slice(contents.as_bytes())
.expect("Invalid source map content");
sm.set_file(Some(&js_file_url.to_string()));
sm.set_source(0, &module_specifier.to_string());
let mut output: Vec<u8> = vec![];
sm.to_writer(&mut output)
.expect("Failed to write source map");
self.disk_cache.set(&source_map_key, &output)
}
}
impl SourceMapGetter for TsCompiler {
fn get_source_map(&self, script_name: &str) -> Option<Vec<u8>> {
self.try_to_resolve_and_get_source_map(script_name)
}
fn get_source_line(&self, script_name: &str, line: usize) -> Option<String> {
self
.try_resolve_and_get_source_file(script_name)
.and_then(|out| {
str::from_utf8(&out.source_code).ok().map(|v| {
// Do NOT use .lines(): it skips the terminating empty line.
// (due to internally using .split_terminator() instead of .split())
let lines: Vec<&str> = v.split('\n').collect();
assert!(lines.len() > line);
lines[line].to_string()
})
})
}
}
// `SourceMapGetter` related methods
impl TsCompiler {
fn try_to_resolve(&self, script_name: &str) -> Option<ModuleSpecifier> {
// if `script_name` can't be resolved to ModuleSpecifier it's probably internal
// script (like `gen/cli/bundle/compiler.js`) so we won't be
// able to get source for it anyway
ModuleSpecifier::resolve_url(script_name).ok()
}
fn try_resolve_and_get_source_file(
&self,
script_name: &str,
) -> Option<SourceFile> {
if let Some(module_specifier) = self.try_to_resolve(script_name) {
return self
.file_fetcher
.fetch_cached_source_file(&module_specifier, Permissions::allow_all());
}
None
}
fn try_to_resolve_and_get_source_map(
&self,
script_name: &str,
) -> Option<Vec<u8>> {
if let Some(module_specifier) = self.try_to_resolve(script_name) {
return match self.get_source_map_file(&module_specifier) {
Ok(out) => Some(out.source_code),
Err(_) => {
// Check if map is inlined
if let Ok(compiled_source) =
self.get_compiled_module(module_specifier.as_url())
{
let mut content_lines = compiled_source
.code
.split('\n')
.map(|s| s.to_string())
.collect::<Vec<String>>();
if !content_lines.is_empty() {
let last_line = content_lines.pop().unwrap();
if last_line.starts_with(
"//# sourceMappingURL=data:application/json;base64,",
) {
let encoded = last_line.trim_start_matches(
"//# sourceMappingURL=data:application/json;base64,",
);
let decoded_map =
base64::decode(encoded).expect("failed to parse source map");
return Some(decoded_map);
}
}
}
None
}
};
}
None
}
}
async fn execute_in_same_thread(
global_state: GlobalState,
permissions: Permissions,
req: Buf,
) -> Result<Buf, ErrBox> {
let mut worker = create_compiler_worker(global_state.clone(), permissions);
let handle = worker.thread_safe_handle();
handle.post_message(req)?;
let mut event_fut = handle.get_event().boxed_local();
loop {
let select_result = futures::future::select(event_fut, &mut worker).await;
match select_result {
Either::Left((event_result, _worker)) => {
let event = event_result
.expect("Compiler didn't respond")
.expect("Empty message");
let buf = match event {
WorkerEvent::Message(buf) => Ok(buf),
WorkerEvent::Error(error) => Err(error),
WorkerEvent::TerminalError(error) => Err(error),
}?;
return Ok(buf);
}
Either::Right((worker_result, event_fut_)) => {
event_fut = event_fut_;
worker_result?;
}
}
}
}
pub async fn bundle(
global_state: &GlobalState,
compiler_config: CompilerConfig,
module_specifier: ModuleSpecifier,
maybe_import_map: Option<ImportMap>,
unstable: bool,
) -> Result<String, ErrBox> {
debug!(
"Invoking the compiler to bundle. module_name: {}",
module_specifier.to_string()
);
let permissions = Permissions::allow_all();
let mut module_graph_loader = ModuleGraphLoader::new(
global_state.file_fetcher.clone(),
maybe_import_map,
permissions.clone(),
false,
true,
);
module_graph_loader
.add_to_graph(&module_specifier, None)
.await?;
let module_graph = module_graph_loader.get_graph();
let module_graph_json =
serde_json::to_value(module_graph).expect("Failed to serialize data");
let root_names = vec![module_specifier.to_string()];
let target = "main";
let cwd = std::env::current_dir().unwrap();
let performance = match global_state.flags.log_level {
Some(Level::Debug) => true,
_ => false,
};
// TODO(bartlomieju): this is non-sense; CompilerConfig's `path` and `content` should
// be optional
let j = match (compiler_config.path, compiler_config.content) {
(Some(config_path), Some(config_data)) => json!({
"type": msg::CompilerRequestType::Bundle,
"target": target,
"rootNames": root_names,
"unstable": unstable,
"performance": performance,
"configPath": config_path,
"config": str::from_utf8(&config_data).unwrap(),
"cwd": cwd,
"sourceFileMap": module_graph_json,
}),
_ => json!({
"type": msg::CompilerRequestType::Bundle,
"target": target,
"rootNames": root_names,
"unstable": unstable,
"performance": performance,
"cwd": cwd,
"sourceFileMap": module_graph_json,
}),
};
let req_msg = j.to_string().into_boxed_str().into_boxed_bytes();
let msg =
execute_in_same_thread(global_state.clone(), permissions, req_msg).await?;
let json_str = std::str::from_utf8(&msg).unwrap();
let bundle_response: BundleResponse = serde_json::from_str(json_str)?;
maybe_log_stats(bundle_response.stats);
if !bundle_response.diagnostics.items.is_empty() {
return Err(ErrBox::from(bundle_response.diagnostics));
}
assert!(bundle_response.bundle_output.is_some());
let output = bundle_response.bundle_output.unwrap();
Ok(output)
}
async fn create_runtime_module_graph(
global_state: GlobalState,
permissions: Permissions,
root_name: &str,
sources: &Option<HashMap<String, String>>,
maybe_options: &Option<String>,
) -> Result<(Vec<String>, ModuleGraph), OpError> {
let mut root_names = vec![];
let mut module_graph_loader = ModuleGraphLoader::new(
global_state.file_fetcher.clone(),
None,
permissions,
false,
false,
);
if let Some(s_map) = sources {
root_names.push(root_name.to_string());
module_graph_loader.build_local_graph(root_name, s_map)?;
} else {
let module_specifier =
ModuleSpecifier::resolve_import(root_name, "<unknown>")?;
root_names.push(module_specifier.to_string());
module_graph_loader
.add_to_graph(&module_specifier, None)
.await?;
}
// download all additional files from TSconfig and add them to root_names
if let Some(options) = maybe_options {
let options_json: serde_json::Value = serde_json::from_str(options)?;
if let Some(types_option) = options_json.get("types") {
let types_arr = types_option.as_array().expect("types is not an array");
for type_value in types_arr {
let type_str = type_value
.as_str()
.expect("type is not a string")
.to_string();
let type_specifier = ModuleSpecifier::resolve_url_or_path(&type_str)?;
module_graph_loader
.add_to_graph(&type_specifier, None)
.await?;
root_names.push(type_specifier.to_string())
}
}
}
Ok((root_names, module_graph_loader.get_graph()))
}
/// This function is used by `Deno.compile()` API.
pub async fn runtime_compile(
global_state: GlobalState,
permissions: Permissions,
root_name: &str,
sources: &Option<HashMap<String, String>>,
maybe_options: &Option<String>,
) -> Result<Value, OpError> {
let (root_names, module_graph) = create_runtime_module_graph(
global_state.clone(),
permissions.clone(),
root_name,
sources,
maybe_options,
)
.await?;
let module_graph_json =
serde_json::to_value(module_graph).expect("Failed to serialize data");
let req_msg = json!({
"type": msg::CompilerRequestType::RuntimeCompile,
"target": "runtime",
"rootNames": root_names,
"sourceFileMap": module_graph_json,
"options": maybe_options,
"unstable": global_state.flags.unstable,
})
.to_string()
.into_boxed_str()
.into_boxed_bytes();
let compiler = global_state.ts_compiler.clone();
let msg = execute_in_same_thread(global_state, permissions, req_msg).await?;
let json_str = std::str::from_utf8(&msg).unwrap();
let response: RuntimeCompileResponse = serde_json::from_str(json_str)?;
if response.diagnostics.is_empty() && sources.is_none() {
compiler.cache_emitted_files(response.emit_map)?;
}
// We're returning `Ok()` instead of `Err()` because it's not runtime
// error if there were diagnostics produced; we want to let user handle
// diagnostics in the runtime.
Ok(serde_json::from_str::<Value>(json_str).unwrap())
}
/// This function is used by `Deno.bundle()` API.
pub async fn runtime_bundle(
global_state: GlobalState,
permissions: Permissions,
root_name: &str,
sources: &Option<HashMap<String, String>>,
maybe_options: &Option<String>,
) -> Result<Value, OpError> {
let (root_names, module_graph) = create_runtime_module_graph(
global_state.clone(),
permissions.clone(),
root_name,
sources,
maybe_options,
)
.await?;
let module_graph_json =
serde_json::to_value(module_graph).expect("Failed to serialize data");
let req_msg = json!({
"type": msg::CompilerRequestType::RuntimeBundle,
"target": "runtime",
"rootNames": root_names,
"sourceFileMap": module_graph_json,
"options": maybe_options,
"unstable": global_state.flags.unstable,
})
.to_string()
.into_boxed_str()
.into_boxed_bytes();
let msg = execute_in_same_thread(global_state, permissions, req_msg).await?;
let json_str = std::str::from_utf8(&msg).unwrap();
let _response: RuntimeBundleResponse = serde_json::from_str(json_str)?;
// We're returning `Ok()` instead of `Err()` because it's not runtime
// error if there were diagnostics produced; we want to let user handle
// diagnostics in the runtime.
Ok(serde_json::from_str::<Value>(json_str).unwrap())
}
/// This function is used by `Deno.transpileOnly()` API.
pub async fn runtime_transpile(
global_state: GlobalState,
permissions: Permissions,
sources: &HashMap<String, String>,
options: &Option<String>,
) -> Result<Value, OpError> {
let req_msg = json!({
"type": msg::CompilerRequestType::RuntimeTranspile,
"sources": sources,
"options": options,
})
.to_string()
.into_boxed_str()
.into_boxed_bytes();
let msg = execute_in_same_thread(global_state, permissions, req_msg).await?;
let json_str = std::str::from_utf8(&msg).unwrap();
let v = serde_json::from_str::<serde_json::Value>(json_str)
.expect("Error decoding JSON string.");
Ok(v)
}
#[derive(Clone, Debug, PartialEq)]
enum DependencyKind {
Import,
DynamicImport,
Export,
}
#[derive(Clone, Debug, PartialEq)]
struct DependencyDescriptor {
span: Span,
specifier: String,
kind: DependencyKind,
}
struct DependencyVisitor {
dependencies: Vec<DependencyDescriptor>,
}
impl Visit for DependencyVisitor {
fn visit_import_decl(
&mut self,
import_decl: &swc_ecma_ast::ImportDecl,
_parent: &dyn Node,
) {
let src_str = import_decl.src.value.to_string();
self.dependencies.push(DependencyDescriptor {
specifier: src_str,
kind: DependencyKind::Import,
span: import_decl.span,
});
}
fn visit_named_export(
&mut self,
named_export: &swc_ecma_ast::NamedExport,
_parent: &dyn Node,
) {
if let Some(src) = &named_export.src {
let src_str = src.value.to_string();
self.dependencies.push(DependencyDescriptor {
specifier: src_str,
kind: DependencyKind::Export,
span: named_export.span,
});
}
}
fn visit_export_all(
&mut self,
export_all: &swc_ecma_ast::ExportAll,
_parent: &dyn Node,
) {
let src_str = export_all.src.value.to_string();
self.dependencies.push(DependencyDescriptor {
specifier: src_str,
kind: DependencyKind::Export,
span: export_all.span,
});
}
fn visit_ts_import_type(
&mut self,
ts_import_type: &swc_ecma_ast::TsImportType,
_parent: &dyn Node,
) {
// TODO(bartlomieju): possibly add separate DependencyKind
let src_str = ts_import_type.arg.value.to_string();
self.dependencies.push(DependencyDescriptor {
specifier: src_str,
kind: DependencyKind::Import,
span: ts_import_type.arg.span,
});
}
fn visit_call_expr(
&mut self,
call_expr: &swc_ecma_ast::CallExpr,
parent: &dyn Node,
) {
use swc_ecma_ast::Expr::*;
use swc_ecma_ast::ExprOrSuper::*;
swc_ecma_visit::visit_call_expr(self, call_expr, parent);
let boxed_expr = match call_expr.callee.clone() {
Super(_) => return,
Expr(boxed) => boxed,
};
match &*boxed_expr {
Ident(ident) => {
if &ident.sym.to_string() != "import" {
return;
}
}
_ => return,
};
if let Some(arg) = call_expr.args.get(0) {
match &*arg.expr {
Lit(lit) => {
if let swc_ecma_ast::Lit::Str(str_) = lit {
let src_str = str_.value.to_string();
self.dependencies.push(DependencyDescriptor {
specifier: src_str,
kind: DependencyKind::DynamicImport,
span: call_expr.span,
});
}
}
_ => return,
}
}
}
}
#[derive(Clone, Debug, PartialEq)]
pub struct ImportDesc {
pub specifier: String,
pub deno_types: Option<String>,
pub location: Location,
}
#[derive(Clone, Debug, PartialEq)]
pub enum TsReferenceKind {
Lib,
Types,
Path,
}
#[derive(Clone, Debug, PartialEq)]
pub struct TsReferenceDesc {
pub kind: TsReferenceKind,
pub specifier: String,
pub location: Location,
}
// TODO(bartlomieju): handle imports in ambient contexts/TS modules
/// This function is a port of `ts.preProcessFile()`
///
/// Additionally it captures `@deno-types` references directly
/// preceeding `import .. from` and `export .. from` statements.
pub fn pre_process_file(
file_name: &str,
media_type: MediaType,
source_code: &str,
analyze_dynamic_imports: bool,
) -> Result<(Vec<ImportDesc>, Vec<TsReferenceDesc>), SwcDiagnosticBuffer> {
let parser = AstParser::new();
parser.parse_module(file_name, media_type, source_code, |parse_result| {
let module = parse_result?;
let mut collector = DependencyVisitor {
dependencies: vec![],
};
let module_span = module.span;
collector.visit_module(&module, &module);
let dependency_descriptors = collector.dependencies;
// for each import check if there's relevant @deno-types directive
let imports = dependency_descriptors
.iter()
.filter(|desc| {
if analyze_dynamic_imports {
return true;
}
desc.kind != DependencyKind::DynamicImport
})
.map(|desc| {
let location = parser.get_span_location(desc.span);
let deno_types = get_deno_types(&parser, desc.span);
ImportDesc {
specifier: desc.specifier.to_string(),
deno_types,
location: location.into(),
}
})
.collect();
// analyze comment from beginning of the file and find TS directives
let comments = parser
.comments
.take_leading_comments(module_span.lo())
.unwrap_or_else(Vec::new);
let mut references = vec![];
for comment in comments {
if comment.kind != CommentKind::Line {
continue;
}
let text = comment.text.to_string();
if let Some((kind, specifier)) = parse_ts_reference(text.trim()) {
let location = parser.get_span_location(comment.span);
references.push(TsReferenceDesc {
kind,
specifier,
location: location.into(),
});
}
}
Ok((imports, references))
})
}
fn get_deno_types(parser: &AstParser, span: Span) -> Option<String> {
let comments = parser.get_span_comments(span);
if comments.is_empty() {
return None;
}
// @deno-types must directly prepend import statement - hence
// checking last comment for span
let last = comments.last().unwrap();
let comment = last.text.trim_start();
parse_deno_types(&comment)
}
// TODO(bartlomieju): refactor
fn parse_ts_reference(comment: &str) -> Option<(TsReferenceKind, String)> {
let (kind, specifier_in_quotes) = if comment.starts_with("/ <reference path=")
{
(
TsReferenceKind::Path,
comment.trim_start_matches("/ <reference path="),
)
} else if comment.starts_with("/ <reference lib=") {
(
TsReferenceKind::Lib,
comment.trim_start_matches("/ <reference lib="),
)
} else if comment.starts_with("/ <reference types=") {
(
TsReferenceKind::Types,
comment.trim_start_matches("/ <reference types="),
)
} else {
return None;
};
let specifier = specifier_in_quotes
.trim_end_matches("/>")
.trim_end()
.trim_start_matches('\"')
.trim_start_matches('\'')
.trim_end_matches('\"')
.trim_end_matches('\'')
.to_string();
Some((kind, specifier))
}
fn parse_deno_types(comment: &str) -> Option<String> {
if comment.starts_with("@deno-types") {
let split: Vec<String> =
comment.split('=').map(|s| s.to_string()).collect();
assert_eq!(split.len(), 2);
let specifier_in_quotes = split.get(1).unwrap().to_string();
let specifier = specifier_in_quotes
.trim()
.trim_start_matches('\"')
.trim_start_matches('\'')
.trim_end_matches('\"')
.trim_end_matches('\'')
.to_string();
return Some(specifier);
}
None
}
#[cfg(test)]
mod tests {
use super::*;
use crate::fs as deno_fs;
use deno_core::ModuleSpecifier;
use std::path::PathBuf;
use tempfile::TempDir;
#[test]
fn test_parse_deno_types() {
assert_eq!(
parse_deno_types("@deno-types=./a/b/c.d.ts"),
Some("./a/b/c.d.ts".to_string())
);
assert_eq!(
parse_deno_types("@deno-types = https://dneo.land/x/some/package/a.d.ts"),
Some("https://dneo.land/x/some/package/a.d.ts".to_string())
);
assert_eq!(
parse_deno_types("@deno-types = ./a/b/c.d.ts"),
Some("./a/b/c.d.ts".to_string())
);
assert!(parse_deno_types("asdf").is_none());
assert!(parse_deno_types("// deno-types = fooo").is_none());
}
#[test]
fn test_parse_ts_reference() {
assert_eq!(
parse_ts_reference(r#"/ <reference lib="deno.shared_globals" />"#),
Some((TsReferenceKind::Lib, "deno.shared_globals".to_string()))
);
assert_eq!(
parse_ts_reference(r#"/ <reference path="./type/reference/dep.ts" />"#),
Some((TsReferenceKind::Path, "./type/reference/dep.ts".to_string()))
);
assert_eq!(
parse_ts_reference(r#"/ <reference types="./type/reference.d.ts" />"#),
Some((TsReferenceKind::Types, "./type/reference.d.ts".to_string()))
);
assert!(parse_ts_reference("asdf").is_none());
assert!(
parse_ts_reference(r#"/ <reference unknown="unknown" />"#).is_none()
);
}
#[tokio::test]
async fn test_compile() {
let p = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"))
.parent()
.unwrap()
.join("cli/tests/002_hello.ts");
let specifier =
ModuleSpecifier::resolve_url_or_path(p.to_str().unwrap()).unwrap();
let out = SourceFile {
url: specifier.as_url().clone(),
filename: PathBuf::from(p.to_str().unwrap().to_string()),
media_type: msg::MediaType::TypeScript,
source_code: include_bytes!("./tests/002_hello.ts").to_vec(),
types_header: None,
};
let mock_state =
GlobalState::mock(vec![String::from("deno"), String::from("hello.ts")]);
let mut module_graph_loader = ModuleGraphLoader::new(
mock_state.file_fetcher.clone(),
None,
Permissions::allow_all(),
false,
false,
);
module_graph_loader
.add_to_graph(&specifier, None)
.await
.expect("Failed to create graph");
let module_graph = module_graph_loader.get_graph();
let result = mock_state
.ts_compiler
.compile_module_graph(
mock_state.clone(),
&out,
TargetLib::Main,
Permissions::allow_all(),
module_graph,
false,
)
.await;
assert!(result.is_ok());
let compiled_file = mock_state
.ts_compiler
.get_compiled_module(&out.url)
.unwrap();
let source_code = compiled_file.code;
assert!(source_code
.as_bytes()
.starts_with(b"\"use strict\";\nconsole.log(\"Hello World\");"));
let mut lines: Vec<String> =
source_code.split('\n').map(|s| s.to_string()).collect();
let last_line = lines.pop().unwrap();
assert!(last_line
.starts_with("//# sourceMappingURL=data:application/json;base64"));
}
#[tokio::test]
async fn test_bundle() {
let p = std::path::PathBuf::from(env!("CARGO_MANIFEST_DIR"))
.parent()
.unwrap()
.join("cli/tests/002_hello.ts");
use deno_core::ModuleSpecifier;
let module_name =
ModuleSpecifier::resolve_url_or_path(p.to_str().unwrap()).unwrap();
let state = GlobalState::mock(vec![
String::from("deno"),
p.to_string_lossy().into(),
String::from("$deno$/bundle.js"),
]);
let result = bundle(
&state,
CompilerConfig::load(None).unwrap(),
module_name,
None,
false,
)
.await;
assert!(result.is_ok());
}
#[test]
fn test_source_code_version_hash() {
assert_eq!(
"0185b42de0686b4c93c314daaa8dee159f768a9e9a336c2a5e3d5b8ca6c4208c",
source_code_version_hash(b"1+2", "0.4.0", b"{}")
);
// Different source_code should result in different hash.
assert_eq!(
"e58631f1b6b6ce2b300b133ec2ad16a8a5ba6b7ecf812a8c06e59056638571ac",
source_code_version_hash(b"1", "0.4.0", b"{}")
);
// Different version should result in different hash.
assert_eq!(
"307e6200347a88dbbada453102deb91c12939c65494e987d2d8978f6609b5633",
source_code_version_hash(b"1", "0.1.0", b"{}")
);
// Different config should result in different hash.
assert_eq!(
"195eaf104a591d1d7f69fc169c60a41959c2b7a21373cd23a8f675f877ec385f",
source_code_version_hash(b"1", "0.4.0", b"{\"compilerOptions\": {}}")
);
}
#[test]
fn test_compile_js() {
let temp_dir = TempDir::new().expect("tempdir fail");
let temp_dir_path = temp_dir.path();
let test_cases = vec![
// valid JSON
(r#"{ "compilerOptions": { "checkJs": true } } "#, true),
// JSON with comment
(
r#"{ "compilerOptions": { // force .js file compilation by Deno "checkJs": true } } "#,
true,
),
// invalid JSON
(r#"{ "compilerOptions": { "checkJs": true },{ } "#, true),
// without content
("", false),
];
let path = temp_dir_path.join("tsconfig.json");
let path_str = path.to_str().unwrap().to_string();
for (json_str, expected) in test_cases {
deno_fs::write_file(&path, json_str.as_bytes(), 0o666).unwrap();
let config = CompilerConfig::load(Some(path_str.clone())).unwrap();
assert_eq!(config.compile_js, expected);
}
}
#[test]
fn test_compiler_config_load() {
let temp_dir = TempDir::new().expect("tempdir fail");
let temp_dir_path = temp_dir.path();
let path = temp_dir_path.join("doesnotexist.json");
let path_str = path.to_str().unwrap().to_string();
let res = CompilerConfig::load(Some(path_str));
assert!(res.is_err());
}
}