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|
use std::fmt;
use ra_syntax::AstNode;
use ra_db::{
SourceFileQuery,
salsa::{Database, debug::DebugQueryTable},
};
use crate::db::RootDatabase;
pub(crate) fn status(db: &RootDatabase) -> String {
let file_stats = {
let mut stats = FilesStats::default();
for entry in db.query(SourceFileQuery).entries::<Vec<_>>() {
stats.total += 1;
if let Some(value) = entry.value {
stats.retained += 1;
stats.retained_size = stats
.retained_size
.checked_add(value.syntax().memory_size_of_subtree())
.unwrap();
}
}
stats
};
let n_defs = {
let interner: &hir::HirInterner = db.as_ref();
interner.len()
};
format!("{}\nn_defs {}\n", file_stats, n_defs)
}
#[derive(Default)]
struct FilesStats {
total: usize,
retained: usize,
retained_size: usize,
}
impl fmt::Display for FilesStats {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
let (size, suff) = human_bytes(self.retained_size);
write!(
fmt,
"{} parsed_files, {} ({}{}) retained",
self.total, self.retained, size, suff
)
}
}
fn human_bytes(bytes: usize) -> (usize, &'static str) {
if bytes < 4096 {
return (bytes, " bytes");
}
let kb = bytes / 1024;
if kb < 4096 {
return (kb, "kb");
}
let mb = kb / 1024;
(mb, "mb")
}
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