From 91048279ba42c304df5ae30370c64efd8a4b4bdf Mon Sep 17 00:00:00 2001
From: Dave Beazley <dave-swig@dabeaz.com>
Date: Wed, 21 May 2003 18:08:26 +0000
Subject: [PATCH] Experimental contract work.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@4807 626c5289-ae23-0410-ae9c-e8d60b6d4f22
---
 Lib/python/pyrun.swg | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Lib/python/pyrun.swg b/Lib/python/pyrun.swg
index 3e9aafdc2..6ce5f656e 100644
--- a/Lib/python/pyrun.swg
+++ b/Lib/python/pyrun.swg
@@ -405,6 +405,12 @@ SWIG_InstallConstants(PyObject *d, swig_const_info constants[]) {
 
 #endif
 
+/* Contract support */
+
+#define SWIG_preassert(x)  if (!(x)) { PyErr_SetString(PyExc_RuntimeError, "preassertion failure: " #x); goto fail; } else
+#define SWIG_postassert(x) if (!(x)) { PyErr_SetString(PyExc_RuntimeError, "postassertion failure: " #x); goto fail; } else
+#define SWIG_invarassert(x) if (!(x)) { PyErr_SetString(PyExc_RuntimeError, "invariant failure: " #x); goto fail; } else
+
 #ifdef __cplusplus
 }
 #endif