perf: parse 以源长上界预分配统计，省语义构建器计数遍历

Cargo.lock

@@ -1160,7 +1160,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_builtins"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "chrono",
  "fast-float",
@@ -1185,7 +1185,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_bytecode"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "num-bigint",
  "oxide_log",
@@ -1193,7 +1193,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cfg"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_emit",
@@ -1204,7 +1204,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cli"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "ansi_term",
  "bumpalo",
@@ -1228,7 +1228,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_code_cache"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "lru",
  "oxide_bytecode",
@@ -1237,7 +1237,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_compiler"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1257,7 +1257,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_dce"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1271,7 +1271,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_emit"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "num-bigint",
  "oxc_allocator",
@@ -1286,7 +1286,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_engine"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_compiler",
@@ -1298,7 +1298,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_ir"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_log",
@@ -1307,7 +1307,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_kernel"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "bumpalo",
  "dashmap",
@@ -1321,7 +1321,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_liveness"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1333,7 +1333,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_log"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "tracing",
  "tracing-appender",
@@ -1342,11 +1342,11 @@ dependencies = [
 
 [[package]]
 name = "oxide_net"
-version = "0.16.0"
+version = "0.16.1"
 
 [[package]]
 name = "oxide_parser"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "oxc_allocator",
  "oxc_ast",
@@ -1361,7 +1361,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_regalloc"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1377,7 +1377,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_runtime_api"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "num-bigint",
  "num-traits",
@@ -1390,7 +1390,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_test262"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "oxide_bytecode",
  "oxide_compiler",
@@ -1410,7 +1410,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_types"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "bumpalo",
  "dashmap",
@@ -1423,7 +1423,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_vm"
-version = "0.16.0"
+version = "0.16.1"
 dependencies = [
  "bumpalo",
  "chrono",

Cargo.toml

@@ -24,7 +24,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.16.0"
+version = "0.16.1"
 edition = "2021"
 license = "MIT"
 rust-version = "1.80"

crates/oxide_parser/src/lib.rs

@@ -22,6 +22,7 @@ fn parse_with_source_type<'a>(
     allocator: &'a Allocator, source: &'a str, source_type: oxc_span::SourceType,
 ) -> Result<Program<'a>, Vec<OxideError>> {
     use oxc_parser::Parser;
+    use oxc_semantic::Stats;
 
     let ret = Parser::new(allocator, source, source_type).parse();
 
@@ -43,8 +44,14 @@ fn parse_with_source_type<'a>(
 
     // 语法早期错误（Early Errors）检查：oxc parser 把复杂早期错误委托给
     // oxc_semantic（strict 绑定标识符、重复参数、NSPL、super 位置等）。
+
+    // 节点、作用域、符号、引用四计数各占至少一个源字节，源长加一即为四者的
+    // 安全上界；传入后语义构建器跳过 Stats::count 全 AST 遍历，直接按上界
+    // 预分配容量。
+    let bound = (source.len() + 1).min(u32::MAX as usize) as u32;
     let semantic_ret = oxc_semantic::SemanticBuilder::new()
         .with_check_syntax_error(true)
+        .with_stats(Stats::new(bound, bound, bound, bound))
         .build(&ret.program);
     if !semantic_ret.errors.is_empty() {
         // 重名诊断先经 AST 复核剔除跨语句列合法合并的误报（须在归一化前，