From f4f76e46386e0888215eaf264e03e02a924dc7a7 Mon Sep 17 00:00:00 2001
From: "kr.angelov" <kr.angelov@gmail.com>
Date: Wed, 26 Jun 2013 10:36:42 +0000
Subject: [PATCH] dummy compute function in the Python binding

---
 src/runtime/python/pypgf.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/runtime/python/pypgf.c b/src/runtime/python/pypgf.c
index 1c7cd5edc..ea7621afc 100644
--- a/src/runtime/python/pypgf.c
+++ b/src/runtime/python/pypgf.c
@@ -1546,6 +1546,17 @@ PGF_generate(PGFObject* self, PyObject *args, PyObject *keywds)
 	return pyres;
 }
 
+static ExprObject*
+PGF_compute(PGFObject* self, PyObject *args)
+{
+	ExprObject* py_expr = NULL;
+    if (!PyArg_ParseTuple(args, "O!", &pgf_ExprType, &py_expr))
+		return NULL;
+
+	Py_INCREF(py_expr);
+	return py_expr;
+}
+
 static PyGetSetDef PGF_getseters[] = {
     {"abstractName", 
      (getter)PGF_getAbstractName, NULL,
@@ -1581,6 +1592,9 @@ static PyMethodDef PGF_methods[] = {
     {"generate", (PyCFunction)PGF_generate, METH_VARARGS | METH_KEYWORDS,
      "Generates abstract syntax trees of given category in decreasing probability order"
     },
+    {"compute", (PyCFunction)PGF_compute, METH_VARARGS,
+     "Computes the normal form of an abstract syntax tree"
+    },
     {NULL}  /* Sentinel */
 };