1 files changed, 71 insertions, 0 deletions
diff --git a/Include/internal/pycore_unicodeobject.h b/Include/internal/pycore_unicodeobject.h
new file mode 100644
index 0000000000..c50c42011a
--- /dev/null
+++ b/Include/internal/pycore_unicodeobject.h
@@ -0,0 +1,71 @@
+#ifndef Py_INTERNAL_UNICODEOBJECT_H
+#define Py_INTERNAL_UNICODEOBJECT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+
+/* runtime lifecycle */
+
+extern void _PyUnicode_InitState(PyInterpreterState *);
+extern PyStatus _PyUnicode_InitGlobalObjects(PyInterpreterState *);
+extern PyStatus _PyUnicode_InitTypes(PyInterpreterState *);
+extern void _PyUnicode_Fini(PyInterpreterState *);
+
+
+/* other API */
+
+struct _Py_unicode_runtime_ids {
+    PyThread_type_lock lock;
+    // next_index value must be preserved when Py_Initialize()/Py_Finalize()
+    // is called multiple times: see _PyUnicode_FromId() implementation.
+    Py_ssize_t next_index;
+};
+
+/* fs_codec.encoding is initialized to NULL.
+   Later, it is set to a non-NULL string by _PyUnicode_InitEncodings(). */
+struct _Py_unicode_fs_codec {
+    char *encoding;   // Filesystem encoding (encoded to UTF-8)
+    int utf8;         // encoding=="utf-8"?
+    char *errors;     // Filesystem errors (encoded to UTF-8)
+    _Py_error_handler error_handler;
+};
+
+struct _Py_unicode_ids {
+    Py_ssize_t size;
+    PyObject **array;
+};
+
+struct _Py_unicode_state {
+    // The empty Unicode object is a singleton to improve performance.
+    PyObject *empty_string;
+    /* Single character Unicode strings in the Latin-1 range are being
+       shared as well. */
+    PyObject *latin1[256];
+    struct _Py_unicode_fs_codec fs_codec;
+
+    /* This dictionary holds all interned unicode strings.  Note that references
+       to strings in this dictionary are *not* counted in the string's ob_refcnt.
+       When the interned string reaches a refcnt of 0 the string deallocation
+       function will delete the reference from this dictionary.
+
+       Another way to look at this is that to say that the actual reference
+       count of a string is:  s->ob_refcnt + (s->state ? 2 : 0)
+    */
+    PyObject *interned;
+
+    // Unicode identifiers (_Py_Identifier): see _PyUnicode_FromId()
+    struct _Py_unicode_ids ids;
+};
+
+extern void _PyUnicode_ClearInterned(PyInterpreterState *);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_UNICODEOBJECT_H */