将部分 while 简化为 for

App/lib/core/Gen/AssignGenMixin.vp

@@ -596,8 +596,7 @@ class AssignGenMixin:
         elts_count: t.CSizeT = len(elts)
 
         # 为每个元素生成 GEP + store
-        i: t.CSizeT = 0
-        while i < elts_count:
+        for i in range(elts_count):
             elem_node: ast.AST | t.CPtr = elts.get(i)
             elem_val: llvmlite.Value | t.CPtr = self.Gen.ExprGen.translate_value(
                 builder, pool, mod, elem_node, None, 0, trans)
@@ -614,7 +613,6 @@ class AssignGenMixin:
                     store_val = self.Gen.ExprGenBase.coerce_to_type(
                         builder, elem_val, elem_ptr.Ty.Pointee, elem_node)
                 llvmlite.build_store(builder, store_val, elem_ptr)
-            i += 1
 
         return 0