gh-106084: Remove _PyObject_HasLen() function (#106103)

Remove _PyObject_HasLen() and _PySequence_IterSearch() functions from
the public C API: move them to the internal C API
(pycore_abstract.h).

No longer export these symbols (in libpython).

Remove also unused pycore_initconfig.h include in typeobject.c.

1 files changed, 22 insertions, 0 deletions

diff --git a/Include/internal/pycore_abstract.h b/Include/internal/pycore_abstract.h
index b1afb2d..9ba2748 100644
--- a/Include/internal/pycore_abstract.h
+++ b/Include/internal/pycore_abstract.h
@@ -19,6 +19,28 @@ _PyIndex_Check(PyObject *obj)
 PyObject *_PyNumber_PowerNoMod(PyObject *lhs, PyObject *rhs);
 PyObject *_PyNumber_InPlacePowerNoMod(PyObject *lhs, PyObject *rhs);
 
+extern int _PyObject_HasLen(PyObject *o);
+
+/* === Sequence protocol ================================================ */
+
+#define PY_ITERSEARCH_COUNT    1
+#define PY_ITERSEARCH_INDEX    2
+#define PY_ITERSEARCH_CONTAINS 3
+
+/* Iterate over seq.
+
+   Result depends on the operation:
+
+   PY_ITERSEARCH_COUNT:  return # of times obj appears in seq; -1 if
+     error.
+   PY_ITERSEARCH_INDEX:  return 0-based index of first occurrence of
+     obj in seq; set ValueError and return -1 if none found;
+     also return -1 on error.
+   PY_ITERSEARCH_CONTAINS:  return 1 if obj in seq, else 0; -1 on
+     error. */
+extern Py_ssize_t _PySequence_IterSearch(PyObject *seq,
+                                         PyObject *obj, int operation);
+
 #ifdef __cplusplus
 }
 #endif