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perf

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This commit is contained in:
Divy Srivastava 2024-12-15 12:02:03 +05:30
parent a9f85a70e2
commit e21982d159
1 changed files with 27 additions and 16 deletions
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43
ext/node/ops/sqlite/statement.rs
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@ -52,10 +52,14 @@ impl<'a> ColumnIterator<'a> {
count,
}
}
fn column_count(&self) -> usize {
self.count as usize
}
}
impl<'a> Iterator for ColumnIterator<'a> {
type Item = (i32, Cow<'a, str>);
type Item = (i32, &'a [u8]);
fn next(&mut self) -> Option<Self::Item> {
if self.index >= self.count {
@ -103,11 +107,11 @@ impl StatementSync {
unsafe { ffi::sqlite3_column_count(self.inner) }
}
fn column_name(&self, index: i32) -> Cow<str> {
fn column_name(&self, index: i32) -> &[u8] {
// SAFETY: `self.inner` is a valid pointer to a sqlite3_stmt.
unsafe {
let name = ffi::sqlite3_column_name(self.inner, index);
std::ffi::CStr::from_ptr(name as _).to_string_lossy()
std::ffi::CStr::from_ptr(name as _).to_bytes()
}
}
@ -133,10 +137,10 @@ impl StatementSync {
}
ffi::SQLITE_TEXT => {
let value = ffi::sqlite3_column_text(self.inner, index);
let value = std::ffi::CStr::from_ptr(value as _).to_string_lossy();
let value = std::ffi::CStr::from_ptr(value as _);
v8::String::new_from_utf8(
scope,
value.as_bytes(),
value.to_bytes(),
v8::NewStringType::Normal,
)
.unwrap()
@ -167,21 +171,28 @@ impl StatementSync {
return Ok(None);
}
let result = v8::Object::new(scope);
let iter = ColumnIterator::new(self);
let num_cols = iter.column_count();
let mut names = Vec::with_capacity(num_cols);
let mut values = Vec::with_capacity(num_cols);
for (index, name) in iter {
let value = self.column_value(index, scope);
let name = v8::String::new_from_utf8(
scope,
name.as_bytes(),
v8::NewStringType::Normal,
)
.unwrap()
.into();
result.set(scope, name, value);
let name =
v8::String::new_from_utf8(scope, name, v8::NewStringType::Normal)
.unwrap()
.into();
names.push(name);
values.push(value);
}
let null = v8::null(scope).into();
let result =
v8::Object::with_prototype_and_properties(scope, null, &names, &values);
Ok(Some(result))
}
@ -271,6 +282,8 @@ impl StatementSync {
scope: &mut v8::HandleScope<'a>,
#[varargs] params: Option<&v8::FunctionCallbackArguments>,
) -> Result<v8::Local<'a, v8::Value>, SqliteError> {
self.reset();
self.bind_params(scope, params)?;
let entry = self.read_row(scope)?;
@ -278,8 +291,6 @@ impl StatementSync {
.map(|r| r.into())
.unwrap_or_else(|| v8::undefined(scope).into());
self.reset();
Ok(result)
}