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Warning when watching stdin (#6381)

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Co-authored-by: Laurenz <laurmaedje@gmail.com>
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Y.D.X. 2025-06-11 22:21:05 +08:00 committed by GitHub
parent 1f5846ce24
commit 19325d5027
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1 changed files with 20 additions and 2 deletions
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22
crates/typst-cli/src/watch.rs
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@ -10,11 +10,12 @@ use codespan_reporting::term::{self, termcolor};
use ecow::eco_format;
use notify::{Event, RecommendedWatcher, RecursiveMode, Watcher as _};
use same_file::is_same_file;
use typst::diag::{bail, StrResult};
use typst::diag::{bail, warning, StrResult};
use typst::syntax::Span;
use typst::utils::format_duration;
use crate::args::{Input, Output, WatchCommand};
use crate::compile::{compile_once, CompileConfig};
use crate::compile::{compile_once, print_diagnostics, CompileConfig};
use crate::timings::Timer;
use crate::world::{SystemWorld, WorldCreationError};
use crate::{print_error, terminal};
@ -55,6 +56,11 @@ pub fn watch(timer: &mut Timer, command: &WatchCommand) -> StrResult<()> {
// Perform initial compilation.
timer.record(&mut world, |world| compile_once(world, &mut config))??;
// Print warning when trying to watch stdin.
if matches!(&config.input, Input::Stdin) {
warn_watching_std(&world, &config)?;
}
// Recompile whenever something relevant happens.
loop {
// Watch all dependencies of the most recent compilation.
@ -332,3 +338,15 @@ impl Status {
}
}
}
/// Emits a warning when trying to watch stdin.
fn warn_watching_std(world: &SystemWorld, config: &CompileConfig) -> StrResult<()> {
let warning = warning!(
Span::detached(),
"cannot watch changes for stdin";
hint: "to recompile on changes, watch a regular file instead";
hint: "to compile once and exit, please use `typst compile` instead"
);
print_diagnostics(world, &[], &[warning], config.diagnostic_format)
.map_err(|err| eco_format!("failed to print diagnostics ({err})"))
}