intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 46 insertions, 0 deletions

diff --git a/contrib/tools/python3/src/Include/asdl.h b/contrib/tools/python3/src/Include/asdl.h
new file mode 100644
index 0000000000..e962560bcd
--- /dev/null
+++ b/contrib/tools/python3/src/Include/asdl.h
@@ -0,0 +1,46 @@
+#ifndef Py_LIMITED_API
+#ifndef Py_ASDL_H
+#define Py_ASDL_H
+
+typedef PyObject * identifier;
+typedef PyObject * string;
+typedef PyObject * object;
+typedef PyObject * constant;
+
+/* It would be nice if the code generated by asdl_c.py was completely
+   independent of Python, but it is a goal the requires too much work
+   at this stage.  So, for example, I'll represent identifiers as
+   interned Python strings.
+*/
+
+/* XXX A sequence should be typed so that its use can be typechecked. */
+
+typedef struct {
+    Py_ssize_t size;
+    void *elements[1];
+} asdl_seq;
+
+typedef struct {
+    Py_ssize_t size;
+    int elements[1];
+} asdl_int_seq;
+
+asdl_seq *_Py_asdl_seq_new(Py_ssize_t size, PyArena *arena);
+asdl_int_seq *_Py_asdl_int_seq_new(Py_ssize_t size, PyArena *arena);
+
+#define asdl_seq_GET(S, I) (S)->elements[(I)]
+#define asdl_seq_LEN(S) ((S) == NULL ? 0 : (S)->size)
+#ifdef Py_DEBUG
+#define asdl_seq_SET(S, I, V) \
+    do { \
+        Py_ssize_t _asdl_i = (I); \
+        assert((S) != NULL); \
+        assert(0 <= _asdl_i && _asdl_i < (S)->size); \
+        (S)->elements[_asdl_i] = (V); \
+    } while (0)
+#else
+#define asdl_seq_SET(S, I, V) (S)->elements[I] = (V)
+#endif
+
+#endif /* !Py_ASDL_H */
+#endif /* Py_LIMITED_API */