bpo-32436: Implement PEP 567 (#5027)
diff --git a/Include/internal/context.h b/Include/internal/context.h
new file mode 100644
index 0000000..59f88f2
--- /dev/null
+++ b/Include/internal/context.h
@@ -0,0 +1,41 @@
+#ifndef Py_INTERNAL_CONTEXT_H
+#define Py_INTERNAL_CONTEXT_H
+
+
+#include "internal/hamt.h"
+
+
+struct _pycontextobject {
+ PyObject_HEAD
+ PyContext *ctx_prev;
+ PyHamtObject *ctx_vars;
+ PyObject *ctx_weakreflist;
+ int ctx_entered;
+};
+
+
+struct _pycontextvarobject {
+ PyObject_HEAD
+ PyObject *var_name;
+ PyObject *var_default;
+ PyObject *var_cached;
+ uint64_t var_cached_tsid;
+ uint64_t var_cached_tsver;
+ Py_hash_t var_hash;
+};
+
+
+struct _pycontexttokenobject {
+ PyObject_HEAD
+ PyContext *tok_ctx;
+ PyContextVar *tok_var;
+ PyObject *tok_oldval;
+ int tok_used;
+};
+
+
+int _PyContext_Init(void);
+void _PyContext_Fini(void);
+
+
+#endif /* !Py_INTERNAL_CONTEXT_H */