[NFC] Add StructUtils namespace, and Scanner => StructScanner (#4317)

This avoids cluttering the main wasm namespace, and clarifies what the
scanner does.

1 files changed, 8 insertions, 3 deletions

diff --git a/src/ir/struct-utils.h b/src/ir/struct-utils.h
index 5d0f5a9b8..f1741fb27 100644
--- a/src/ir/struct-utils.h
+++ b/src/ir/struct-utils.h
@@ -22,6 +22,8 @@
 
 namespace wasm {
 
+namespace StructUtils {
+
 // A vector of a template type's values. One such vector will be used per struct
 // type, where each element in the vector represents a field. We always assume
 // that the vectors are pre-initialized to the right length before accessing any
@@ -128,11 +130,12 @@ struct FunctionStructValuesMap
 // type being written to, and not just that it is of a subtype of the
 // instruction's type, which helps later.
 template<typename T, typename SubType>
-struct Scanner : public WalkerPass<PostWalker<Scanner<T, SubType>>> {
+struct StructScanner
+  : public WalkerPass<PostWalker<StructScanner<T, SubType>>> {
   bool isFunctionParallel() override { return true; }
 
-  Scanner(FunctionStructValuesMap<T>& functionNewInfos,
-          FunctionStructValuesMap<T>& functionSetGetInfos)
+  StructScanner(FunctionStructValuesMap<T>& functionNewInfos,
+                FunctionStructValuesMap<T>& functionSetGetInfos)
     : functionNewInfos(functionNewInfos),
       functionSetGetInfos(functionSetGetInfos) {}
 
@@ -267,6 +270,8 @@ private:
   }
 };
 
+} // namespace StructUtils
+
 } // namespace wasm
 
 #endif // wasm_ir_struct_utils_h