Add typing to BaseChecker.process_token (#6273)

Co-authored-by: Daniël van Noord <13665637+DanielNoord@users.noreply.github.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/pylint/checkers/raw_metrics.py b/pylint/checkers/raw_metrics.py
index 9e0fe08f1..3940bcfff 100644
--- a/pylint/checkers/raw_metrics.py
+++ b/pylint/checkers/raw_metrics.py
@@ -73,7 +73,7 @@ class RawMetricsChecker(BaseTokenChecker):
         """Init statistics."""
         self.linter.stats.reset_code_count()
 
-    def process_tokens(self, tokens):
+    def process_tokens(self, tokens: list[tokenize.TokenInfo]) -> None:
         """Update stats."""
         i = 0
         tokens = list(tokens)
@@ -86,7 +86,9 @@ class RawMetricsChecker(BaseTokenChecker):
 JUNK = (tokenize.NL, tokenize.INDENT, tokenize.NEWLINE, tokenize.ENDMARKER)
 
 
-def get_type(tokens, start_index):
+def get_type(
+    tokens: list[tokenize.TokenInfo], start_index: int
+) -> tuple[int, int, Literal["code", "docstring", "comment", "empty"]]:
     """Return the line type : docstring, comment, code, empty."""
     i = start_index
     start = tokens[i][2]
@@ -109,7 +111,8 @@ def get_type(tokens, start_index):
         line_type = "empty"
     elif i < len(tokens) and tokens[i][0] == tokenize.NEWLINE:
         i += 1
-    return i, pos[0] - start[0] + 1, line_type
+    # Mypy fails to infer the literal of line_type
+    return i, pos[0] - start[0] + 1, line_type  # type: ignore[return-value]
 
 
 def register(linter: PyLinter) -> None: