add helper function in parser

Author: Aniketsy

Grammar/python.gram

@@ -1642,7 +1642,15 @@ invalid_type_params:
             "Type parameter list cannot be empty")}
 
 invalid_bitwise_and:
-    | a=bitwise_and b='&' c='&' { RAISE_SYNTAX_ERROR_KNOWN_RANGE(b, c, "invalid syntax.  Maybe you meant 'and' or '&' instead of '&&'?") }
+    | a=bitwise_and b='&' c='&' {
+        _PyPegen_tokens_are_adjacent(b, c)
+        ? RAISE_SYNTAX_ERROR_KNOWN_RANGE(b, c, "invalid syntax.  Maybe you meant 'and' or '&' instead of '&&'?")
+        : NULL
+    }
 
 invalid_bitwise_or:
-    | a=bitwise_or b='|' c='|' { RAISE_SYNTAX_ERROR_KNOWN_RANGE(b, c, "invalid syntax.  Maybe you meant 'or' or '|' instead of '||'?") }
+    | a=bitwise_or b='|' c='|' {
+        _PyPegen_tokens_are_adjacent(b, c)
+        ? RAISE_SYNTAX_ERROR_KNOWN_RANGE(b, c, "invalid syntax.  Maybe you meant 'or' or '|' instead of '||'?")
+        : NULL
+    }

Parser/parser.c

@@ -209,6 +209,12 @@ RAISE_ERROR_KNOWN_LOCATION(Parser *p, PyObject *errtype,
     RAISE_ERROR_KNOWN_LOCATION(p, PyExc_SyntaxError, (a)->lineno, (a)->col_offset, CURRENT_POS, CURRENT_POS, msg, ##__VA_ARGS__)
 #define RAISE_SYNTAX_ERROR_INVALID_TARGET(type, e) _RAISE_SYNTAX_ERROR_INVALID_TARGET(p, type, e)
 
+Py_LOCAL_INLINE(int)
+_PyPegen_tokens_are_adjacent(Token *a, Token *b)
+{
+    return (a->end_lineno == b->lineno) && (a->end_col_offset == b->col_offset);
+}
+
 Py_LOCAL_INLINE(void *)
 CHECK_CALL(Parser *p, void *result)
 {