Use StaticVec for function resolution caches for the common case where no modules are used.

This commit is contained in:
Stephen Chung 2021-09-12 13:33:55 +08:00
parent 6e25354076
commit 96dbbc76e4
2 changed files with 8 additions and 8 deletions

View File

@ -662,18 +662,18 @@ pub struct EvalState {
pub num_operations: u64,
/// Number of modules loaded.
pub num_modules: usize,
/// Stack of function resolution caches.
fn_resolution_caches: StaticVec<FnResolutionCache>,
/// Embedded module resolver.
#[cfg(not(feature = "no_module"))]
pub embedded_module_resolver: Option<Shared<crate::module::resolvers::StaticModuleResolver>>,
/// Stack of function resolution caches.
fn_resolution_caches: Vec<FnResolutionCache>,
}
impl EvalState {
/// Create a new [`EvalState`].
#[inline(always)]
#[must_use]
pub const fn new() -> Self {
pub fn new() -> Self {
Self {
source: None,
always_search_scope: false,
@ -682,7 +682,7 @@ impl EvalState {
num_modules: 0,
#[cfg(not(feature = "no_module"))]
embedded_module_resolver: None,
fn_resolution_caches: Vec::new(),
fn_resolution_caches: StaticVec::new(),
}
}
/// Is the state currently at global (root) level?
@ -697,7 +697,7 @@ impl EvalState {
pub fn fn_resolution_cache_mut(&mut self) -> &mut FnResolutionCache {
if self.fn_resolution_caches.is_empty() {
// Push a new function resolution cache if the stack is empty
self.fn_resolution_caches.push(Default::default());
self.push_fn_resolution_cache();
}
self.fn_resolution_caches
.last_mut()
@ -713,7 +713,7 @@ impl EvalState {
///
/// # Panics
///
/// Panics if there are no more function resolution cache in the stack.
/// Panics if there is no more function resolution cache in the stack.
#[inline(always)]
pub fn pop_fn_resolution_cache(&mut self) {
self.fn_resolution_caches

View File

@ -271,7 +271,7 @@ pub use module::NamespaceRef;
///
/// The number 3, other than being the holy number, is carefully chosen for a balance between
/// storage space and reduce allocations. That is because most function calls (and most functions,
/// in that matter) contain fewer than 4 arguments, the exception being closures that capture a
/// for that matter) contain fewer than 4 arguments, the exception being closures that capture a
/// large number of external variables.
///
/// In addition, most script blocks either contain many statements, or just one or two lines;
@ -306,7 +306,7 @@ type StaticVec<T> = smallvec::SmallVec<[T; 3]>;
///
/// The number 3, other than being the holy number, is carefully chosen for a balance between
/// storage space and reduce allocations. That is because most function calls (and most functions,
/// in that matter) contain fewer than 4 arguments, the exception being closures that capture a
/// for that matter) contain fewer than 4 arguments, the exception being closures that capture a
/// large number of external variables.
///
/// In addition, most script blocks either contain many statements, or just one or two lines;