refactor(semantic): rename Counts to Stats (#5753)

Pure refactor. Just rename the type.

crates/oxc_semantic/src/builder.rs

@@ -22,7 +22,6 @@ use crate::{
     binder::Binder,
     checker,
     class::ClassTableBuilder,
-    counter::Counts,
     diagnostics::redeclaration,
     jsdoc::JSDocBuilder,
     label::UnusedLabels,
@@ -30,6 +29,7 @@ use crate::{
     node::{AstNodes, NodeFlags, NodeId},
     reference::{Reference, ReferenceFlags, ReferenceId},
     scope::{Bindings, ScopeFlags, ScopeId, ScopeTree},
+    stats::Stats,
     symbol::{SymbolFlags, SymbolId, SymbolTable},
     unresolved_stack::UnresolvedReferencesStack,
     JSDocFinder, Semantic,
@@ -232,10 +232,10 @@ impl<'a> SemanticBuilder<'a> {
             // Avoiding this growth produces up to 30% perf boost on our benchmarks.
             // TODO: It would be even more efficient to calculate counts in parser to avoid
             // this extra AST traversal.
-            let counts = Counts::count(program);
-            self.nodes.reserve(counts.nodes);
-            self.scope.reserve(counts.scopes);
-            self.symbols.reserve(counts.symbols, counts.references);
+            let stats = Stats::count(program);
+            self.nodes.reserve(stats.nodes);
+            self.scope.reserve(stats.scopes);
+            self.symbols.reserve(stats.symbols, stats.references);
 
             // Visit AST to generate scopes tree etc
             self.visit_program(program);
@@ -243,13 +243,13 @@ impl<'a> SemanticBuilder<'a> {
             // Check that estimated counts accurately
             #[cfg(debug_assertions)]
             {
-                let actual_counts = Counts {
+                let actual_stats = Stats {
                     nodes: self.nodes.len(),
                     scopes: self.scope.len(),
                     symbols: self.symbols.len(),
                     references: self.symbols.references.len(),
                 };
-                Counts::assert_accurate(&actual_counts, &counts);
+                Stats::assert_accurate(&actual_stats, &stats);
             }
 
             // Checking syntax error on module record requires scope information from the previous AST pass

crates/oxc_semantic/src/lib.rs

@@ -23,7 +23,6 @@ mod binder;
 mod builder;
 mod checker;
 mod class;
-mod counter;
 mod diagnostics;
 mod jsdoc;
 mod label;
@@ -31,6 +30,7 @@ mod module_record;
 mod node;
 mod reference;
 mod scope;
+mod stats;
 mod symbol;
 mod unresolved_stack;
 

crates/oxc_semantic/src/stats.rs

@@ -14,18 +14,18 @@ use oxc_ast::{
 use oxc_syntax::scope::{ScopeFlags, ScopeId};
 
 #[derive(Default, Debug)]
-pub(crate) struct Counts {
+pub(crate) struct Stats {
     pub nodes: usize,
     pub scopes: usize,
     pub symbols: usize,
     pub references: usize,
 }
 
-impl Counts {
+impl Stats {
     pub fn count(program: &Program) -> Self {
-        let mut counts = Counts::default();
-        counts.visit_program(program);
-        counts
+        let mut stats = Stats::default();
+        stats.visit_program(program);
+        stats
     }
 
     #[cfg_attr(not(debug_assertions), expect(dead_code))]
@@ -33,7 +33,7 @@ impl Counts {
         assert_eq!(actual.nodes, estimated.nodes, "nodes count mismatch");
         assert_eq!(actual.scopes, estimated.scopes, "scopes count mismatch");
         assert_eq!(actual.references, estimated.references, "references count mismatch");
-        // `Counts` may overestimate number of symbols, because multiple `BindingIdentifier`s
+        // `Stats` may overestimate number of symbols, because multiple `BindingIdentifier`s
         // can result in only a single symbol.
         // e.g. `var x; var x;` = 2 x `BindingIdentifier` but 1 x symbol.
         // This is not a big problem - allocating a `Vec` with excess capacity is cheap.
@@ -48,7 +48,7 @@ impl Counts {
     }
 }
 
-impl<'a> Visit<'a> for Counts {
+impl<'a> Visit<'a> for Stats {
     #[inline]
     fn enter_node(&mut self, _: AstKind<'a>) {
         self.nodes += 1;