From 2628661be5ff1aa9911587354ff56382bf2ae2fe Mon Sep 17 00:00:00 2001
From: Ramana Kumar <ramana@member.fsf.org>
Date: Thu, 29 Sep 2022 19:36:17 +0100
Subject: [PATCH] Start on SWIG for minimal interface

---
 min-bindings/c_kzg_4844.swg | 63 +++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 min-bindings/c_kzg_4844.swg

diff --git a/min-bindings/c_kzg_4844.swg b/min-bindings/c_kzg_4844.swg
new file mode 100644
index 0000000..0397d6e
--- /dev/null
+++ b/min-bindings/c_kzg_4844.swg
@@ -0,0 +1,63 @@
+%module ckzg
+%{
+#include "c_kzg_4844.h"
+%}
+%include "stdint.i"
+%include "carrays.i"
+%include "cpointer.i"
+
+%typemap(in, numinputs=0) OBJECT *OUTPUT($1_basetype tmp) { $1 = &tmp; }
+%typemap(argout) OBJECT *OUTPUT {
+#if defined(SWIGPYTHON)
+  PyObject *obj = SWIG_NewPointerObj(memcpy(malloc(sizeof($1_basetype)),$1,sizeof($1_basetype)),
+                                     $descriptor, SWIG_POINTER_NEW);
+  $result = ($result == NULL) ? obj : SWIG_Python_AppendOutput($result, obj);
+#endif
+}
+%apply OBJECT *OUTPUT {
+  KZGSettings *out, BLSFieldElement *out, PolynomialEvalForm *out,
+  KZGCommitment *out, KZGProof *out
+}
+
+%typemap(in, numinputs=0) bool *OUTPUT(bool tmp) { $1 = &tmp; }
+%typemap(argout) bool *OUTPUT {
+#if defined(SWIGPYTHON)
+  PyObject *obj = *$1 ? Py_True : Py_False;
+  $result = ($result == NULL) ? obj : SWIG_Python_AppendOutput($result, obj);
+#endif
+}
+%apply bool *OUTPUT { bool *out }
+
+%typemap(in, numinputs=0) uint64_t out[4] (uint64_t tmp[4]) { $1 = tmp; }
+%typemap(argout) uint64_t out[4] {
+#if defined(SWIGPYTHON)
+  PyObject *obj = PyTuple_Pack(4,
+    PyLong_FromUnsignedLong($1[0]),
+    PyLong_FromUnsignedLong($1[1]),
+    PyLong_FromUnsignedLong($1[2]),
+    PyLong_FromUnsignedLong($1[3]));
+  $result = ($result == NULL) ? obj : SWIG_Python_AppendOutput($result, obj);
+#endif
+}
+
+%typemap(in) const uint64_t[4] (uint64_t tmp[4]) {
+#if defined(SWIGPYTHON)
+  if (PyTuple_Check($input)) {
+    if (!PyArg_ParseTuple($input, "kkkk", tmp, tmp+1, tmp+2, tmp+3)) {
+      PyErr_SetString(PyExc_TypeError, "tuple must have 4 elements");
+      SWIG_fail;
+    }
+    $1 = &tmp[0];
+  } else {
+    PyErr_SetString(PyExc_TypeError, "expected a tuple.");
+    SWIG_fail;
+  }
+#endif
+}
+
+%array_class(scalar_t, scalars)
+%array_class(BLSFieldElement, BLSFieldElements)
+%pointer_class(PolynomialEvalForm, PolynomialEvalFormPtr)
+
+%include "../min-src/c_kzg_4844.h"
+%include "../inc/blst.h"