remove slower impl, add benchmarks

This commit is contained in:
Bernardo 2018-12-21 18:51:31 +01:00
parent a005d2a614
commit d6312085a1
6 changed files with 304 additions and 201 deletions

178
Cargo.lock generated
View File

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"checksum tempfile 3.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "7e91405c14320e5c79b3d148e1c86f40749a36e490642202a31689cb1a3452b2"
"checksum tera 0.11.20 (registry+https://github.com/rust-lang/crates.io-index)" = "4b505279e19d8f7d24b1a9dc58327c9c36174b1a2c7ebdeac70792d017cb64f3"
"checksum teraron 0.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "0d89ad4617d1dec55331067fadaa041e813479e1779616f3d3ce9308bf46184e"
"checksum term 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5e6b677dd1e8214ea1ef4297f85dbcbed8e8cdddb561040cc998ca2551c37561"
"checksum termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "689a3bdfaab439fd92bc87df5c4c78417d3cbe537487274e9b0b2dce76e92096"
"checksum text_unit 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "8009d7bdbd896a7e09b595f8f9325a19047fc708653e60d0895202b82135048f"
"checksum textwrap 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "307686869c93e71f94da64286f9a9524c0f308a9e1c87a583de8e9c9039ad3f6"
"checksum thread-scoped 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "bcbb6aa301e5d3b0b5ef639c9a9c7e2f1c944f177b460c04dc24c69b1fa2bd99"
"checksum thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
"checksum threadpool 1.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e2f0c90a5f3459330ac8bc0d2f879c693bb7a2f59689c1083fc4ef83834da865"
"checksum time 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)" = "847da467bf0db05882a9e2375934a8a55cffdc9db0d128af1518200260ba1f6c"
@ -1661,6 +1838,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
"checksum unicode-normalization 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "6a0180bc61fc5a987082bfa111f4cc95c4caff7f9799f3e46df09163a937aa25"
"checksum unicode-segmentation 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "aa6024fc12ddfd1c6dbc14a80fa2324d4568849869b779f6bd37e5e4c03344d1"
"checksum unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "882386231c45df4700b275c7ff55b6f3698780a650026380e72dabe76fa46526"
"checksum unicode-xid 0.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8c1f860d7d29cf02cb2f3f359fd35991af3d30bac52c57d265a3c461074cb4dc"
"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
"checksum unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
"checksum url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dd4e7c0d531266369519a4aa4f399d748bd37043b00bde1e4ff1f60a120b355a"

View File

@ -18,3 +18,11 @@ proptest = "0.8.7"
[dev-dependencies]
test_utils = { path = "../test_utils" }
criterion = "0.2"
rand = "*"
rand_xorshift = "*"
lazy_static = "*"
[[bench]]
name = "translate_offset_with_edit_benchmark"
harness = false

View File

@ -0,0 +1,88 @@
use criterion::{criterion_group, criterion_main};
use criterion::Criterion;
use criterion::Fun;
use ra_text_edit::AtomTextEdit;
use ra_text_edit::test_utils::{arb_edits_custom, arb_offset};
use ra_editor::line_index_utils;
use ra_editor::LineIndex;
use ra_syntax::TextUnit;
use proptest::test_runner;
use proptest::string::string_regex;
use proptest::strategy::{Strategy, ValueTree};
use rand_xorshift::XorShiftRng;
use rand::SeedableRng;
use lazy_static::lazy_static;
#[derive(Debug)]
struct Data {
text: String,
line_index: LineIndex,
edits: Vec<AtomTextEdit>,
offset: TextUnit,
}
fn setup_data() -> Data {
let mut runner = test_runner::TestRunner::default();
{
struct TestRng {
rng: XorShiftRng,
}
// HACK to be able to manually seed the TestRunner
let rng: &mut TestRng = unsafe { std::mem::transmute(runner.rng()) };
rng.rng = XorShiftRng::seed_from_u64(0);
}
let text = {
let arb = string_regex("([a-zA-Z_0-9]{10,50}.{1,5}\n){100,500}").unwrap();
let tree = arb.new_tree(&mut runner).unwrap();
tree.current()
};
let edits = {
let arb = arb_edits_custom(&text, 99, 100);
let tree = arb.new_tree(&mut runner).unwrap();
tree.current()
};
let offset = {
let arb = arb_offset(&text);
let tree = arb.new_tree(&mut runner).unwrap();
tree.current()
};
let line_index = LineIndex::new(&text);
Data {
text,
line_index,
edits,
offset,
}
}
lazy_static! {
static ref DATA: Data = setup_data();
}
fn compare_translates(c: &mut Criterion) {
let f1 = Fun::new("translate_after_edit", |b, _| {
b.iter(|| {
let d = &*DATA;
line_index_utils::translate_after_edit(&d.text, d.offset, d.edits.clone());
})
});
let f2 = Fun::new("count_newlines", |b, _| {
b.iter(|| {
let d = &*DATA;
line_index_utils::count_newlines(d.offset, &d.line_index, &d.edits);
})
});
let functions = vec![f1, f2];
c.bench_functions("translate", functions, ());
}
criterion_group!(benches, compare_translates);
criterion_main!(benches);

View File

@ -2,7 +2,8 @@ mod code_actions;
mod extend_selection;
mod folding_ranges;
mod line_index;
mod line_index_utils;
// public for benchmarkig
pub mod line_index_utils;
mod symbols;
#[cfg(test)]
mod test_utils;
@ -13,7 +14,6 @@ pub use self::{
extend_selection::extend_selection,
folding_ranges::{folding_ranges, Fold, FoldKind},
line_index::{LineCol, LineIndex},
line_index_utils::translate_offset_with_edit,
symbols::{file_structure, file_symbols, FileSymbol, StructureNode},
typing::{join_lines, on_enter, on_eq_typed},
};

View File

@ -24,136 +24,6 @@ impl<'a> Iterator for OffsetNewlineIter<'a> {
}
}
#[derive(Debug)]
struct AltEdit<'a> {
insert_newlines: OffsetNewlineIter<'a>,
delete: TextRange,
diff: i64,
}
fn translate_range_by(range: TextRange, diff: i64) -> TextRange {
if diff == 0 {
range
} else {
let start = translate_by(range.start(), diff);
let end = translate_by(range.end(), diff);
TextRange::from_to(start, end)
}
}
fn translate_by(x: TextUnit, diff: i64) -> TextUnit {
if diff == 0 {
x
} else {
TextUnit::from((x.to_usize() as i64 + diff) as u32)
}
}
fn to_alt_edits<'a>(offset: TextUnit, edits: &'a [AtomTextEdit]) -> Vec<AltEdit<'a>> {
let mut xs: Vec<AltEdit<'a>> = Vec::with_capacity(edits.len());
// collect and sort edits
for edit in edits {
// TODO discard after translating?
// if edit.delete.start() >= offset {
// continue;
// }
let insert_index = xs.upper_bound_by_key(&edit.delete.start(), |x| x.delete.start());
let diff = edit.insert.len() as i64 - edit.delete.len().to_usize() as i64;
xs.insert(
insert_index,
AltEdit {
insert_newlines: OffsetNewlineIter {
offset: edit.delete.start(),
text: &edit.insert,
},
delete: edit.delete,
diff: diff,
},
);
}
// translate edits by previous edits
for i in 1..xs.len() {
let (x, prevs) = xs[0..=i].split_last_mut().unwrap();
for prev in prevs {
x.delete = translate_range_by(x.delete, prev.diff);
x.insert_newlines.offset = translate_by(x.insert_newlines.offset, prev.diff);
}
}
xs
}
#[derive(Debug)]
enum NextNewline {
Use,
Discard,
Replace(TextUnit),
New(TextUnit),
}
fn next_newline(candidate: Option<TextUnit>, edits: &mut [AltEdit]) -> NextNewline {
let mut candidate = match candidate {
None => {
for edit in edits {
if let Some(inserted) = edit.insert_newlines.next() {
return NextNewline::New(inserted);
}
}
return NextNewline::Use; // END
}
Some(x) => x,
};
for edit in edits {
if candidate <= edit.delete.start() {
return NextNewline::Replace(candidate);
} else if candidate <= edit.delete.end() {
return match edit.insert_newlines.next() {
Some(x) => NextNewline::Replace(x),
None => NextNewline::Discard,
};
} else {
if let Some(inserted) = edit.insert_newlines.next() {
return NextNewline::New(inserted);
}
candidate = translate_by(candidate, edit.diff);
}
}
return NextNewline::Replace(candidate);
}
pub fn count_newlines(offset: TextUnit, line_index: &LineIndex, edits: &[AtomTextEdit]) -> u32 {
let mut edits = to_alt_edits(offset, edits);
let mut orig_newlines = line_index.newlines().iter().map(|x| *x).peekable();
let mut count = 0;
loop {
let res = next_newline(orig_newlines.peek().map(|x| *x), &mut edits);
let next = match res {
NextNewline::Use => orig_newlines.next(),
NextNewline::Discard => {
orig_newlines.next();
continue;
}
NextNewline::Replace(new) => {
orig_newlines.next();
Some(new)
}
NextNewline::New(new) => Some(new),
};
match next {
Some(n) if n <= offset => {
count += 1;
}
_ => {
break;
}
}
}
count
}
#[derive(Debug)]
enum NextNewlines<'a> {
Use,
@ -188,7 +58,7 @@ impl<'a, 'b> Edits<'a, 'b> {
self.acc_diff += self.current.as_ref().map_or(0, |x| x.diff);
match self.edits.split_first() {
Some((next, rest)) => {
let delete = translate_range_by(next.delete, self.acc_diff);
let delete = self.translate_range(next.delete);
let diff = next.insert.len() as i64 - next.delete.len().to_usize() as i64;
self.current = Some(TranslatedEdit {
delete,
@ -241,9 +111,27 @@ impl<'a, 'b> Edits<'a, 'b> {
};
res
}
fn translate_range(&self, range: TextRange) -> TextRange {
if self.acc_diff == 0 {
range
} else {
let start = self.translate(range.start());
let end = self.translate(range.end());
TextRange::from_to(start, end)
}
}
fn translate(&self, x: TextUnit) -> TextUnit {
if self.acc_diff == 0 {
x
} else {
TextUnit::from((x.to_usize() as i64 + self.acc_diff) as u32)
}
}
}
pub fn count_newlines_alt(offset: TextUnit, line_index: &LineIndex, edits: &[AtomTextEdit]) -> u32 {
pub fn count_newlines(offset: TextUnit, line_index: &LineIndex, edits: &[AtomTextEdit]) -> u32 {
let mut sorted_edits: Vec<&AtomTextEdit> = Vec::with_capacity(edits.len());
for edit in edits {
let insert_index =
@ -257,7 +145,7 @@ pub fn count_newlines_alt(offset: TextUnit, line_index: &LineIndex, edits: &[Ato
for &orig_newline in line_index.newlines() {
loop {
let translated_newline = translate_by(orig_newline, state.acc_diff);
let translated_newline = state.translate(orig_newline);
match state.next_newlines(translated_newline) {
NextNewlines::Use => {
if offset < translated_newline {
@ -369,69 +257,5 @@ mod test {
let actual_lines = count_newlines(x.offset, &line_index, &x.edits);
assert_eq!(actual_lines, expected.line);
}
#[test]
fn test_translate_offset_with_edit_alt(x in arb_text_with_offset_and_edits()) {
let line_index = LineIndex::new(&x.text);
let expected = translate_after_edit(&x.text, x.offset, x.edits.clone());
let actual_lines = count_newlines_alt(x.offset, &line_index, &x.edits);
assert_eq!(actual_lines, expected.line);
}
}
#[test]
fn test_translate_offset_with_edit_alt_1() {
let x = ArbTextWithOffsetAndEdits {
text: String::from("aA\n"),
offset: 2.into(),
edits: vec![AtomTextEdit::delete(TextRange::from_to(1.into(), 2.into()))],
};
let line_index = LineIndex::new(&x.text);
let expected = translate_after_edit(&x.text, x.offset, x.edits.clone());
let actual_lines = count_newlines_alt(x.offset, &line_index, &x.edits);
assert_eq!(actual_lines, expected.line);
}
#[test]
fn test_translate_offset_with_edit_alt_2() {
let x = ArbTextWithOffsetAndEdits {
text: String::from("\nqꀸ#"),
offset: 5.into(),
edits: vec![AtomTextEdit::insert(1.into(), "\n".into())],
};
let line_index = LineIndex::new(&x.text);
let expected = translate_after_edit(&x.text, x.offset, x.edits.clone());
let actual_lines = count_newlines_alt(x.offset, &line_index, &x.edits);
assert_eq!(actual_lines, expected.line);
}
#[test]
fn test_translate_offset_with_edit_alt_3() {
let x = ArbTextWithOffsetAndEdits {
text: String::from("\n\n\n"),
offset: 0.into(),
edits: vec![AtomTextEdit::delete(TextRange::from_to(0.into(), 2.into()))],
};
let line_index = LineIndex::new(&x.text);
let expected = translate_after_edit(&x.text, x.offset, x.edits.clone());
let actual_lines = count_newlines_alt(x.offset, &line_index, &x.edits);
assert_eq!(actual_lines, expected.line);
}
#[test]
fn test_translate_offset_with_edit_alt_4() {
let x = ArbTextWithOffsetAndEdits {
text: String::from("☻54翑\"A"),
offset: 5.into(),
edits: vec![
AtomTextEdit::delete(TextRange::from_to(0.into(), 8.into())),
AtomTextEdit::insert(9.into(), String::from("\n")),
],
};
let line_index = LineIndex::new(&x.text);
let expected = translate_after_edit(&x.text, x.offset, x.edits.clone());
let actual_lines = count_newlines_alt(x.offset, &line_index, &x.edits);
assert_eq!(actual_lines, expected.line);
}
}

View File

@ -24,6 +24,10 @@ pub fn arb_offset(text: &str) -> BoxedStrategy<TextUnit> {
}
pub fn arb_edits(text: &str) -> BoxedStrategy<Vec<AtomTextEdit>> {
arb_edits_custom(&text, 0, 7)
}
pub fn arb_edits_custom(text: &str, min: usize, max: usize) -> BoxedStrategy<Vec<AtomTextEdit>> {
if text.is_empty() {
// only valid edits
return Just(vec![])
@ -37,9 +41,10 @@ pub fn arb_edits(text: &str) -> BoxedStrategy<Vec<AtomTextEdit>> {
}
let offsets = text_offsets(text);
let max_cuts = offsets.len().min(7);
let max_cuts = max.min(offsets.len());
let min_cuts = min.min(offsets.len() - 1);
proptest::sample::subsequence(offsets, 0..max_cuts)
proptest::sample::subsequence(offsets, min_cuts..max_cuts)
.prop_flat_map(|cuts| {
let strategies: Vec<_> = cuts
.chunks(2)