Sync contrib/tools/python3 layout with upstream

* Move src/ subdir contents to the top of the layout
* Rename self-written lib -> lib2 to avoid CaseFolding warning from the VCS
* Regenerate contrib/libs/python proxy-headers accordingly
4ccc62ac1511abcf0fed14ccade38e984e088f1e

1 files changed, 79 insertions, 0 deletions

diff --git a/contrib/tools/python3/Include/internal/pycore_tuple.h b/contrib/tools/python3/Include/internal/pycore_tuple.h
new file mode 100644
index 00000000000..335edad8979
--- /dev/null
+++ b/contrib/tools/python3/Include/internal/pycore_tuple.h
@@ -0,0 +1,79 @@
+#ifndef Py_INTERNAL_TUPLE_H
+#define Py_INTERNAL_TUPLE_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+#include "tupleobject.h"   /* _PyTuple_CAST() */
+
+
+/* runtime lifecycle */
+
+extern PyStatus _PyTuple_InitGlobalObjects(PyInterpreterState *);
+extern void _PyTuple_Fini(PyInterpreterState *);
+
+
+/* other API */
+
+// PyTuple_MAXSAVESIZE - largest tuple to save on free list
+// PyTuple_MAXFREELIST - maximum number of tuples of each size to save
+
+#if defined(PyTuple_MAXSAVESIZE) && PyTuple_MAXSAVESIZE <= 0
+   // A build indicated that tuple freelists should not be used.
+#  define PyTuple_NFREELISTS 0
+#  undef PyTuple_MAXSAVESIZE
+#  undef PyTuple_MAXFREELIST
+
+#elif !defined(WITH_FREELISTS)
+#  define PyTuple_NFREELISTS 0
+#  undef PyTuple_MAXSAVESIZE
+#  undef PyTuple_MAXFREELIST
+
+#else
+   // We are using a freelist for tuples.
+#  ifndef PyTuple_MAXSAVESIZE
+#    define PyTuple_MAXSAVESIZE 20
+#  endif
+#  define PyTuple_NFREELISTS PyTuple_MAXSAVESIZE
+#  ifndef PyTuple_MAXFREELIST
+#    define PyTuple_MAXFREELIST 2000
+#  endif
+#endif
+
+struct _Py_tuple_state {
+#if PyTuple_NFREELISTS > 0
+    /* There is one freelist for each size from 1 to PyTuple_MAXSAVESIZE.
+       The empty tuple is handled separately.
+
+       Each tuple stored in the array is the head of the linked list
+       (and the next available tuple) for that size.  The actual tuple
+       object is used as the linked list node, with its first item
+       (ob_item[0]) pointing to the next node (i.e. the previous head).
+       Each linked list is initially NULL. */
+    PyTupleObject *free_list[PyTuple_NFREELISTS];
+    int numfree[PyTuple_NFREELISTS];
+#else
+    char _unused;  // Empty structs are not allowed.
+#endif
+};
+
+#define _PyTuple_ITEMS(op) _Py_RVALUE(_PyTuple_CAST(op)->ob_item)
+
+extern PyObject *_PyTuple_FromArray(PyObject *const *, Py_ssize_t);
+extern PyObject *_PyTuple_FromArraySteal(PyObject *const *, Py_ssize_t);
+
+
+typedef struct {
+    PyObject_HEAD
+    Py_ssize_t it_index;
+    PyTupleObject *it_seq; /* Set to NULL when iterator is exhausted */
+} _PyTupleIterObject;
+
+#ifdef __cplusplus
+}
+#endif
+#endif   /* !Py_INTERNAL_TUPLE_H */