From edd522e5ceb31180eed22c2f1bcae50e4f79c2ae Mon Sep 17 00:00:00 2001
From: lloyd <lloyd@randombit.net>
Date: Sun, 26 Sep 2010 16:44:01 +0000
Subject: There is a pretty common pattern in the code for testing for internal
 errors of the form

  if(some_expr_indicating_failure)
     throw Internal_Error("Some mildly informative message");

Make this simpiler with the addition of a BOTAN_ASSERT macro which will
throw an exception upon failure.
---
 src/utils/assert.cpp | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 src/utils/assert.cpp

(limited to 'src/utils/assert.cpp')

diff --git a/src/utils/assert.cpp b/src/utils/assert.cpp
new file mode 100644
index 000000000..29af831d8
--- /dev/null
+++ b/src/utils/assert.cpp
@@ -0,0 +1,35 @@
+/*
+* Runtime assertion checking
+* (C) 2010 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/internal/assert.h>
+#include <botan/exceptn.h>
+#include <sstream>
+
+namespace Botan {
+
+void assertion_failure(const char* expr_str,
+                       const char* msg,
+                       const char* func,
+                       const char* file,
+                       int line)
+   {
+   std::ostringstream format;
+
+   format << "Assertion " << expr_str << " failed ";
+
+   if(msg)
+      format << "(" << msg << ") ";
+
+   if(func)
+      format << "in " << func << " ";
+
+   format << "@" << file << ":" << line;
+
+   throw Internal_Error(format.str());
+   }
+
+}
-- 
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