reduce overhead to build textarea instance using .clone() in benchmarks

bench/benches/cursor.rs

@@ -21,13 +21,20 @@ impl Restore {
     }
 }
 
-fn run(moves: &[CursorMove], restore: Restore, repeat: usize) -> (usize, usize) {
+fn prepare_textarea() -> TextArea<'static> {
     let mut lines = Vec::with_capacity(LOREM.len() * 2 + 1);
     lines.extend(LOREM.iter().map(|s| s.to_string()));
     lines.push("".to_string());
     lines.extend(LOREM.iter().map(|s| s.to_string()));
+    TextArea::new(lines)
+}
 
-    let mut textarea = TextArea::new(lines);
+fn run(
+    mut textarea: TextArea<'_>,
+    moves: &[CursorMove],
+    restore: Restore,
+    repeat: usize,
+) -> (usize, usize) {
     let mut term = dummy_terminal();
 
     let mut prev = textarea.cursor();
@@ -48,39 +55,100 @@ fn run(moves: &[CursorMove], restore: Restore, repeat: usize) -> (usize, usize)
 }
 
 fn move_char(c: &mut Criterion) {
+    let textarea = prepare_textarea();
     c.bench_function("cursor::char::forward", |b| {
-        b.iter(|| black_box(run(&[CursorMove::Forward], Restore::TopLeft, 1000)))
+        b.iter(|| {
+            black_box(run(
+                textarea.clone(),
+                &[CursorMove::Forward],
+                Restore::TopLeft,
+                1000,
+            ))
+        })
     });
     c.bench_function("cursor::char::back", |b| {
-        b.iter(|| black_box(run(&[CursorMove::Back], Restore::BottomRight, 1000)))
+        b.iter(|| {
+            black_box(run(
+                textarea.clone(),
+                &[CursorMove::Back],
+                Restore::BottomRight,
+                1000,
+            ))
+        })
     });
     c.bench_function("cursor::char::down", |b| {
-        b.iter(|| black_box(run(&[CursorMove::Down], Restore::TopLeft, 1000)))
+        b.iter(|| {
+            black_box(run(
+                textarea.clone(),
+                &[CursorMove::Down],
+                Restore::TopLeft,
+                1000,
+            ))
+        })
     });
     c.bench_function("cursor::char::up", |b| {
-        b.iter(|| black_box(run(&[CursorMove::Up], Restore::BottomLeft, 1000)))
+        b.iter(|| {
+            black_box(run(
+                textarea.clone(),
+                &[CursorMove::Up],
+                Restore::BottomLeft,
+                1000,
+            ))
+        })
     });
 }
 fn move_word(c: &mut Criterion) {
+    let textarea = prepare_textarea();
     c.bench_function("cursor::word::forward", |b| {
-        b.iter(|| black_box(run(&[CursorMove::WordForward], Restore::TopLeft, 1000)))
+        b.iter(|| {
+            black_box(run(
+                textarea.clone(),
+                &[CursorMove::WordForward],
+                Restore::TopLeft,
+                1000,
+            ))
+        })
     });
     c.bench_function("cursor::word::back", |b| {
-        b.iter(|| black_box(run(&[CursorMove::WordBack], Restore::BottomRight, 1000)))
+        b.iter(|| {
+            black_box(run(
+                textarea.clone(),
+                &[CursorMove::WordBack],
+                Restore::BottomRight,
+                1000,
+            ))
+        })
     });
 }
 fn move_paragraph(c: &mut Criterion) {
+    let textarea = prepare_textarea();
     c.bench_function("cursor::paragraph::down", |b| {
-        b.iter(|| black_box(run(&[CursorMove::ParagraphForward], Restore::TopLeft, 1000)))
+        b.iter(|| {
+            black_box(run(
+                textarea.clone(),
+                &[CursorMove::ParagraphForward],
+                Restore::TopLeft,
+                1000,
+            ))
+        })
     });
     c.bench_function("cursor::paragraph::up", |b| {
-        b.iter(|| black_box(run(&[CursorMove::ParagraphBack], Restore::BottomLeft, 1000)))
+        b.iter(|| {
+            black_box(run(
+                textarea.clone(),
+                &[CursorMove::ParagraphBack],
+                Restore::BottomLeft,
+                1000,
+            ))
+        })
     });
 }
 fn move_edge(c: &mut Criterion) {
+    let textarea = prepare_textarea();
     c.bench_function("cursor::edge::head_end", |b| {
         b.iter(|| {
             black_box(run(
+                textarea.clone(),
                 &[CursorMove::End, CursorMove::Head],
                 Restore::None,
                 500,
@@ -90,6 +158,7 @@ fn move_edge(c: &mut Criterion) {
     c.bench_function("cursor::edge::top_bottom", |b| {
         b.iter(|| {
             black_box(run(
+                textarea.clone(),
                 &[CursorMove::Bottom, CursorMove::Top],
                 Restore::None,
                 500,

bench/benches/search.rs

@@ -2,61 +2,46 @@ use criterion::{criterion_group, criterion_main, Criterion};
 use tui_textarea::TextArea;
 use tui_textarea_bench::{dummy_terminal, TerminalExt, LOREM};
 
-fn forward(c: &mut Criterion) {
-    #[inline]
-    fn run(pat: &str, lines: Vec<String>) {
-        let mut term = dummy_terminal();
-        let mut textarea: TextArea = TextArea::new(lines);
-        textarea.set_search_pattern(pat).unwrap();
-        term.draw_textarea(&textarea);
-        for _ in 0..100 {
+#[inline]
+fn run(pat: &str, mut textarea: TextArea<'_>, forward: bool) {
+    let mut term = dummy_terminal();
+    textarea.set_search_pattern(pat).unwrap();
+    term.draw_textarea(&textarea);
+    for _ in 0..100 {
+        if forward {
             textarea.search_forward(false);
-            term.draw_textarea(&textarea);
+        } else {
+            textarea.search_back(false);
         }
-        textarea.set_search_pattern(r"").unwrap();
         term.draw_textarea(&textarea);
     }
+    textarea.set_search_pattern(r"").unwrap();
+    term.draw_textarea(&textarea);
+}
 
+fn short(c: &mut Criterion) {
+    let textarea = TextArea::from(LOREM.iter().map(|s| s.to_string()));
     c.bench_function("search::forward_short", |b| {
-        let lines: Vec<_> = LOREM.iter().map(|s| s.to_string()).collect();
-        b.iter(move || run(r"\w*i\w*", lines.clone()))
+        b.iter(|| run(r"\w*i\w*", textarea.clone(), true))
     });
-    c.bench_function("search::forward_long", |b| {
-        let mut lines = vec![];
-        for _ in 0..10 {
-            lines.extend(LOREM.iter().map(|s| s.to_string()));
-        }
-        b.iter(move || run(r"[A-Z]\w*", lines.clone()))
+    c.bench_function("search::back_short", |b| {
+        b.iter(|| run(r"\w*i\w*", textarea.clone(), false))
     });
 }
 
-fn back(c: &mut Criterion) {
-    #[inline]
-    fn run(pat: &str, lines: Vec<String>) {
-        let mut term = dummy_terminal();
-        let mut textarea: TextArea = TextArea::new(lines);
-        textarea.set_search_pattern(pat).unwrap();
-        term.draw_textarea(&textarea);
-        for _ in 0..100 {
-            textarea.search_back(false);
-            term.draw_textarea(&textarea);
-        }
-        textarea.set_search_pattern(r"").unwrap();
-        term.draw_textarea(&textarea);
+fn long(c: &mut Criterion) {
+    let mut lines = vec![];
+    for _ in 0..10 {
+        lines.extend(LOREM.iter().map(|s| s.to_string()));
     }
-
-    c.bench_function("search::back_short", |b| {
-        let lines: Vec<_> = LOREM.iter().map(|s| s.to_string()).collect();
-        b.iter(move || run(r"\w*i\w*", lines.clone()))
+    let textarea = TextArea::new(lines);
+    c.bench_function("search::forward_long", |b| {
+        b.iter(|| run(r"[A-Z]\w*", textarea.clone(), true))
     });
     c.bench_function("search::back_long", |b| {
-        let mut lines = vec![];
-        for _ in 0..10 {
-            lines.extend(LOREM.iter().map(|s| s.to_string()));
-        }
-        b.iter(move || run(r"[A-Z]\w*", lines.clone()))
+        b.iter(|| run(r"[A-Z]\w*", textarea.clone(), false))
     });
 }
 
-criterion_group!(search, forward, back);
+criterion_group!(search, short, long);
 criterion_main!(search);