remove unnecessary regex usage

Author: Walnut356

src/etc/lldb_providers.py

@@ -1,5 +1,4 @@
 from __future__ import annotations
-import re
 import sys
 from typing import List, TYPE_CHECKING
 
@@ -417,8 +416,12 @@ def _getVariantName(variant) -> str:
     we can extract `TheVariantName` from it for display purpose.
     """
     s = variant.GetType().GetName()
-    match = re.search(r"::([^:]+)\$Variant$", s)
-    return match.group(1) if match else ""
+    if not s.endswith("$Variant"):
+        return ""
+
+    # trim off path and "$Variant"
+    # len("$Variant") == 8
+    return s.rsplit("::", 1)[1][:-8]
 
 
 class ClangEncodedEnumProvider:

src/etc/rust_types.py

@@ -58,8 +58,6 @@ class RustType(Enum):
 STD_PATHBUF_REGEX = re.compile(r"^(std::([a-z_]+::)+)PathBuf$")
 STD_PATH_REGEX = re.compile(r"^&(mut )?(std::([a-z_]+::)+)Path$")
 
-TUPLE_ITEM_REGEX = re.compile(r"__\d+$")
-
 ENCODED_ENUM_PREFIX = "RUST$ENCODED$ENUM$"
 ENUM_DISR_FIELD_NAME = "<<variant>>"
 ENUM_LLDB_ENCODED_VARIANTS = "$variants$"
@@ -88,7 +86,12 @@ class RustType(Enum):
 
 
 def is_tuple_fields(fields: List) -> bool:
-    return all(TUPLE_ITEM_REGEX.match(str(field.name)) for field in fields)
+    for f in fields:
+        name = str(f.name)
+        if not name.startswith("__") or not name[2:].isdigit():
+            return False
+
+    return True
 
 
 def classify_struct(name: str, fields: List) -> RustType: