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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use crate::dom::bindings::inheritance::Castable;
use crate::dom::bindings::str::DOMString;
use crate::dom::globalscope::GlobalScope;
use crate::dom::workerglobalscope::WorkerGlobalScope;
use devtools_traits::{ConsoleMessage, LogLevel, ScriptToDevtoolsControlMsg};
use js::rust::describe_scripted_caller;
use std::io;
// https://developer.mozilla.org/en-US/docs/Web/API/Console
pub struct Console(());
impl Console {
#[allow(unsafe_code)]
fn send_to_devtools(global: &GlobalScope, level: LogLevel, message: DOMString) {
if let Some(chan) = global.devtools_chan() {
let caller = unsafe { describe_scripted_caller(*GlobalScope::get_cx()) }.unwrap_or_default();
let console_message = ConsoleMessage {
message: String::from(message),
logLevel: level,
filename: caller.filename,
lineNumber: caller.line as usize,
columnNumber: caller.col as usize,
};
let worker_id = global
.downcast::<WorkerGlobalScope>()
.map(|worker| worker.get_worker_id());
let devtools_message = ScriptToDevtoolsControlMsg::ConsoleAPI(
global.pipeline_id(),
console_message,
worker_id,
);
chan.send(devtools_message).unwrap();
}
}
}
// In order to avoid interleaving the stdout output of the Console API methods
// with stderr that could be in use on other threads, we lock stderr until
// we're finished with stdout. Since the stderr lock is reentrant, there is
// no risk of deadlock if the callback ends up trying to write to stderr for
// any reason.
fn with_stderr_lock<F>(f: F)
where
F: FnOnce(),
{
let stderr = io::stderr();
let _handle = stderr.lock();
f()
}
fn console_messages(global: &GlobalScope, messages: &[DOMString], level: LogLevel) {
console_message(global, DOMString::from(messages.join(" ")), level)
}
fn console_message(global: &GlobalScope, message: DOMString, level: LogLevel) {
with_stderr_lock(move || {
let prefix = global.current_group_label().unwrap_or_default();
let message = DOMString::from(format!("{}{}", prefix, message));
println!("{}", message);
Console::send_to_devtools(global, level, message);
})
}
#[allow(non_snake_case)]
impl Console {
// https://developer.mozilla.org/en-US/docs/Web/API/Console/log
pub fn Log(global: &GlobalScope, messages: Vec<DOMString>) {
console_messages(global, &messages, LogLevel::Log)
}
// https://developer.mozilla.org/en-US/docs/Web/API/Console/clear
pub fn Clear(global: &GlobalScope) {
let message: Vec<DOMString> = Vec::new();
console_messages(global, &message, LogLevel::Clear)
}
// https://developer.mozilla.org/en-US/docs/Web/API/Console
pub fn Debug(global: &GlobalScope, messages: Vec<DOMString>) {
console_messages(global, &messages, LogLevel::Debug)
}
// https://developer.mozilla.org/en-US/docs/Web/API/Console/info
pub fn Info(global: &GlobalScope, messages: Vec<DOMString>) {
console_messages(global, &messages, LogLevel::Info)
}
// https://developer.mozilla.org/en-US/docs/Web/API/Console/warn
pub fn Warn(global: &GlobalScope, messages: Vec<DOMString>) {
console_messages(global, &messages, LogLevel::Warn)
}
// https://developer.mozilla.org/en-US/docs/Web/API/Console/error
pub fn Error(global: &GlobalScope, messages: Vec<DOMString>) {
console_messages(global, &messages, LogLevel::Error)
}
// https://developer.mozilla.org/en-US/docs/Web/API/Console/assert
pub fn Assert(global: &GlobalScope, condition: bool, message: Option<DOMString>) {
if !condition {
let message = message.unwrap_or_else(|| DOMString::from("no message"));
let message = DOMString::from(format!("Assertion failed: {}", message));
console_message(global, message, LogLevel::Error)
};
}
// https://developer.mozilla.org/en-US/docs/Web/API/Console/time
pub fn Time(global: &GlobalScope, label: DOMString) {
if let Ok(()) = global.time(label.clone()) {
let message = DOMString::from(format!("{}: timer started", label));
console_message(global, message, LogLevel::Log);
}
}
// https://developer.mozilla.org/en-US/docs/Web/API/Console/timeEnd
pub fn TimeEnd(global: &GlobalScope, label: DOMString) {
if let Ok(delta) = global.time_end(&label) {
let message = DOMString::from(format!("{}: {}ms", label, delta));
console_message(global, message, LogLevel::Log);
}
}
// https://console.spec.whatwg.org/#group
pub fn Group(global: &GlobalScope, messages: Vec<DOMString>) {
global.push_console_group(DOMString::from(messages.join(" ")));
}
// https://console.spec.whatwg.org/#groupcollapsed
pub fn GroupCollapsed(global: &GlobalScope, messages: Vec<DOMString>) {
global.push_console_group(DOMString::from(messages.join(" ")));
}
// https://console.spec.whatwg.org/#groupend
pub fn GroupEnd(global: &GlobalScope) {
global.pop_console_group();
}
}
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