Python bindings working on both architectures

Signed-off-by: David Shah <davey1576@gmail.com>

2 files changed, 86 insertions, 61 deletions

diff --git a/common/pybindings.cc b/common/pybindings.cc
index 839ba7df..8bae4e51 100644
--- a/common/pybindings.cc
+++ b/common/pybindings.cc
@@ -20,78 +20,20 @@
 
 #include "design.h"
 #include "chip.h"
-#include <utility>
-#include <stdexcept>
-#include <boost/python.hpp>
-#include <boost/python/suite/indexing/vector_indexing_suite.hpp>
-#include <boost/python/suite/indexing/map_indexing_suite.hpp>
-#include <boost/python/suite/indexing/map_indexing_suite.hpp>
-
-using namespace boost::python;
+#include "pybindings.h"
 
+// Required to determine concatenated module name (which differs for different archs)
 #define PASTER(x, y) x ## _ ## y
 #define EVALUATOR(x, y)  PASTER(x,y)
 #define MODULE_NAME EVALUATOR(nextpnrpy, ARCHNAME)
 
-/*
-A wrapper for a Pythonised nextpnr Iterator. The actual class wrapped is a
-pair<Iterator, Iterator> containing (current, end)
-*/
-
-template<typename T>
-struct iterator_wrapper {
-    typedef decltype(*(std::declval<T>())) value_t;
-
-    static value_t next(std::pair<T, T> &iter) {
-        if (iter.first != iter.second) {
-            value_t val = *iter.first;
-            ++iter.first;
-            return val;
-        } else {
-            PyErr_SetString(PyExc_StopIteration, "End of range reached");
-            boost::python::throw_error_already_set();
-            // Should be unreachable, but prevent control may reach end of non-void
-            throw std::runtime_error("unreachable");
-        }
-    }
-
-    static void wrap(const char *python_name) {
-        class_<std::pair<T, T>>(python_name, no_init)
-                .def("__next__", next);
-    }
-};
-
-/*
-A wrapper for a nextpnr Range. Ranges should have two functions, begin()
-and end() which return iterator-like objects supporting ++, * and !=
-Full STL iterator semantics are not required, unlike the standard Boost wrappers
-*/
-
-template<typename T>
-struct range_wrapper {
-    typedef decltype(std::declval<T>().begin()) iterator_t;
-
-    static std::pair<iterator_t, iterator_t> iter(T &range) {
-        return std::make_pair(range.begin(), range.end());
-    }
-
-    static void wrap(const char *range_name, const char *iter_name) {
-        class_<T>(range_name, no_init)
-                .def("__iter__", iter);
-        iterator_wrapper<iterator_t>().wrap(iter_name);
-    }
-};
-
-#define WRAP_RANGE(t) range_wrapper<t##Range>().wrap(#t "Range", #t "Iterator")
-
 // Architecture-specific bindings should be created in the below function, which must be implemented in all
 // architectures
 void arch_wrap_python();
 
 BOOST_PYTHON_MODULE (MODULE_NAME) {
     // From Chip.h
-    WRAP_RANGE(Bels);
-    WRAP_RANGE(AllWires);
+    WRAP_RANGE(Bel);
     WRAP_RANGE(WireDelay);
     WRAP_RANGE(BelPin);
 
diff --git a/common/pybindings.h b/common/pybindings.h
new file mode 100644
index 00000000..eab2039d
--- /dev/null
+++ b/common/pybindings.h
@@ -0,0 +1,83 @@
+/*
+ *  nextpnr -- Next Generation Place and Route
+ *
+ *  Copyright (C) 2018  Clifford Wolf <clifford@clifford.at>
+ *  Copyright (C) 2018  David Shah <dave@ds0.me>
+ *
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#ifndef COMMON_PYBINDINGS_H
+#define COMMON_PYBINDINGS_H
+#include <utility>
+#include <stdexcept>
+#include <boost/python.hpp>
+#include <boost/python/suite/indexing/vector_indexing_suite.hpp>
+#include <boost/python/suite/indexing/map_indexing_suite.hpp>
+#include <boost/python/suite/indexing/map_indexing_suite.hpp>
+
+using namespace boost::python;
+/*
+A wrapper for a Pythonised nextpnr Iterator. The actual class wrapped is a
+pair<Iterator, Iterator> containing (current, end)
+*/
+
+template<typename T>
+struct iterator_wrapper {
+    typedef decltype(*(std::declval<T>())) value_t;
+
+    static value_t next(std::pair<T, T> &iter) {
+        if (iter.first != iter.second) {
+            value_t val = *iter.first;
+            ++iter.first;
+            return val;
+        } else {
+            PyErr_SetString(PyExc_StopIteration, "End of range reached");
+            boost::python::throw_error_already_set();
+            // Should be unreachable, but prevent control may reach end of non-void
+            throw std::runtime_error("unreachable");
+        }
+    }
+
+    static void wrap(const char *python_name) {
+        class_<std::pair<T, T>>(python_name, no_init)
+                .def("__next__", next);
+    }
+};
+
+/*
+A wrapper for a nextpnr Range. Ranges should have two functions, begin()
+and end() which return iterator-like objects supporting ++, * and !=
+Full STL iterator semantics are not required, unlike the standard Boost wrappers
+*/
+
+template<typename T>
+struct range_wrapper {
+    typedef decltype(std::declval<T>().begin()) iterator_t;
+
+    static std::pair<iterator_t, iterator_t> iter(T &range) {
+        return std::make_pair(range.begin(), range.end());
+    }
+
+    static void wrap(const char *range_name, const char *iter_name) {
+        class_<T>(range_name, no_init)
+                .def("__iter__", iter);
+        iterator_wrapper<iterator_t>().wrap(iter_name);
+    }
+};
+
+#define WRAP_RANGE(t) range_wrapper<t##Range>().wrap(#t "Range", #t "Iterator")
+
+
+#endif /* end of include guard: COMMON_PYBINDINGS_HH */