ITStudio_OUC/OxideJS-New
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perf: ASCII 单字符缓存 + 字符串迭代器游标收尾

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彭俊皓
2026-08-14 12:11:54 +08:00
parent 5061ad7a44
commit 1c5676e614
7 changed files with 229 additions and 25 deletions
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crates/oxide_vm/src/vm_dispatch_misc.rs
+23 -7
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@@ -3,7 +3,7 @@ use std::sync::Arc;
use crate::native::NativeFn;
use crate::vm::{native_fn_ptr_to_fn, CallFrame, ForInIter, FrameContinuation, Vm, MAX_PROTO_CHAIN_DEPTH};
use crate::vm_trace;
use oxide_runtime_api::{to_boolean, to_string_full, NativeResult};
use oxide_runtime_api::{to_boolean, to_string_full, NativeResult, VmHost};
use oxide_types::object::{JsObject, PropAttributes};
use oxide_types::private_key::{int_key_value, is_int_key, is_private_name_key, is_symbol_key, make_int_key};
use oxide_types::value::JsValue;
@@ -738,9 +738,14 @@ impl Vm {
if src.is_string() {
let code_units: Vec<u16> = unsafe { (*src.as_string_ptr()).data.encode_utf16().collect() };
for (i, unit) in code_units.iter().enumerate() {
let s = char::from_u32(*unit as u32).map(|c| c.to_string()).unwrap_or_default();
let si = make_int_key(i as u32);
let ch_val = self.new_string(&s);
let ch_val = match char::from_u32(*unit as u32) {
Some(c) => match self.single_char(c) {
Some(v) => v,
None => self.new_string(&c.to_string()),
},
None => self.new_string(""),
};
let rest = unsafe { &mut *rest_ptr };
self.set_or_create_prop_value(rest, si, ch_val);
}
@@ -792,9 +797,15 @@ impl Vm {
let s = unsafe { (*raw.as_string_ptr()).data.clone() };
let code_units: Vec<u16> = s.encode_utf16().collect();
for (i, unit) in code_units.iter().enumerate() {
let ch = char::from_u32(*unit as u32).map(|c| c.to_string()).unwrap_or_default();
let si = make_int_key(i as u32);
assignments.push((si, self.new_string(&ch)));
let ch_val = match char::from_u32(*unit as u32) {
Some(c) => match self.single_char(c) {
Some(v) => v,
None => self.new_string(&c.to_string()),
},
None => self.new_string(""),
};
assignments.push((si, ch_val));
}
}
@@ -887,9 +898,14 @@ impl Vm {
let target = unsafe { &mut *target_val.as_js_object_ptr() };
let code_units: Vec<u16> = unsafe { (*src.as_string_ptr()).data.encode_utf16().collect() };
for (i, unit) in code_units.iter().enumerate() {
let s = char::from_u32(*unit as u32).map(|c| c.to_string()).unwrap_or_default();
let si = make_int_key(i as u32);
let ch_val = self.new_string(&s);
let ch_val = match char::from_u32(*unit as u32) {
Some(c) => match self.single_char(c) {
Some(v) => v,
None => self.new_string(&c.to_string()),
},
None => self.new_string(""),
};
self.set_or_create_prop_value(target, si, ch_val);
}
return Ok(());