mirror of
https://github.com/denoland/deno
synced 2024-08-28 20:39:51 +00:00
159 lines
4.3 KiB
Rust
159 lines
4.3 KiB
Rust
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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use deno_core::v8;
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use deno_core::ModuleSpecifier;
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use serde::Serialize;
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use std::cell::RefCell;
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use std::thread;
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use deno_terminal::colors;
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/// The log level to use when printing diagnostic log messages, warnings,
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/// or errors in the worker.
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///
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/// Note: This is disconnected with the log crate's log level and the Rust code
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/// in this crate will respect that value instead. To specify that, use
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/// `log::set_max_level`.
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#[derive(Debug, Default, Clone, Copy)]
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pub enum WorkerLogLevel {
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// WARNING: Ensure this is kept in sync with
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// the JS values (search for LogLevel).
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Error = 1,
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Warn = 2,
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#[default]
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Info = 3,
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Debug = 4,
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}
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impl From<log::Level> for WorkerLogLevel {
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fn from(value: log::Level) -> Self {
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match value {
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log::Level::Error => WorkerLogLevel::Error,
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log::Level::Warn => WorkerLogLevel::Warn,
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log::Level::Info => WorkerLogLevel::Info,
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log::Level::Debug => WorkerLogLevel::Debug,
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log::Level::Trace => WorkerLogLevel::Debug,
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}
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}
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}
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/// Common bootstrap options for MainWorker & WebWorker
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#[derive(Clone)]
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pub struct BootstrapOptions {
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/// Sets `Deno.args` in JS runtime.
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pub args: Vec<String>,
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pub cpu_count: usize,
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pub log_level: WorkerLogLevel,
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pub enable_op_summary_metrics: bool,
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pub enable_testing_features: bool,
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pub locale: String,
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pub location: Option<ModuleSpecifier>,
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/// Sets `Deno.noColor` in JS runtime.
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pub no_color: bool,
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pub is_tty: bool,
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// --unstable flag, deprecated
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pub unstable: bool,
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// --unstable-* flags
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pub unstable_features: Vec<i32>,
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pub user_agent: String,
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pub inspect: bool,
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pub has_node_modules_dir: bool,
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pub argv0: Option<String>,
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pub node_ipc_fd: Option<i64>,
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pub disable_deprecated_api_warning: bool,
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pub verbose_deprecated_api_warning: bool,
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pub future: bool,
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}
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impl Default for BootstrapOptions {
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fn default() -> Self {
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let cpu_count = thread::available_parallelism()
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.map(|p| p.get())
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.unwrap_or(1);
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let runtime_version = env!("CARGO_PKG_VERSION");
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let user_agent = format!("Deno/{runtime_version}");
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Self {
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user_agent,
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cpu_count,
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no_color: !colors::use_color(),
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is_tty: deno_terminal::is_stdout_tty(),
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enable_op_summary_metrics: Default::default(),
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enable_testing_features: Default::default(),
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log_level: Default::default(),
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locale: "en".to_string(),
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location: Default::default(),
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unstable: Default::default(),
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unstable_features: Default::default(),
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inspect: Default::default(),
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args: Default::default(),
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has_node_modules_dir: Default::default(),
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argv0: None,
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node_ipc_fd: None,
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disable_deprecated_api_warning: false,
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verbose_deprecated_api_warning: false,
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future: false,
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}
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}
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}
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/// This is a struct that we use to serialize the contents of the `BootstrapOptions`
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/// struct above to a V8 form. While `serde_v8` is not as fast as hand-coding this,
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/// it's "fast enough" while serializing a large tuple like this that it doesn't appear
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/// on flamegraphs.
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///
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/// Note that a few fields in here are derived from the process and environment and
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/// are not sourced from the underlying `BootstrapOptions`.
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///
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/// Keep this in sync with `99_main.js`.
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#[derive(Serialize)]
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struct BootstrapV8<'a>(
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// location
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Option<&'a str>,
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// unstable
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bool,
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// granular unstable flags
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&'a [i32],
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// inspect
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bool,
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// enable_testing_features
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bool,
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// has_node_modules_dir
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bool,
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// argv0
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Option<&'a str>,
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// disable_deprecated_api_warning,
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bool,
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// verbose_deprecated_api_warning
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bool,
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// future
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bool,
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);
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impl BootstrapOptions {
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/// Return the v8 equivalent of this structure.
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pub fn as_v8<'s>(
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&self,
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scope: &mut v8::HandleScope<'s>,
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) -> v8::Local<'s, v8::Value> {
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let scope = RefCell::new(scope);
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let ser = deno_core::serde_v8::Serializer::new(&scope);
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let bootstrap = BootstrapV8(
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self.location.as_ref().map(|l| l.as_str()),
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self.unstable,
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self.unstable_features.as_ref(),
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self.inspect,
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self.enable_testing_features,
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self.has_node_modules_dir,
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self.argv0.as_deref(),
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self.disable_deprecated_api_warning,
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self.verbose_deprecated_api_warning,
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self.future,
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);
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bootstrap.serialize(ser).unwrap()
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}
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}
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