1 files changed, 111 insertions, 0 deletions
diff --git a/libdevcore/Assertions.h b/libdevcore/Assertions.h
new file mode 100644
index 00000000..7b4a4a76
--- /dev/null
+++ b/libdevcore/Assertions.h
@@ -0,0 +1,111 @@
+/*
+	This file is part of cpp-ethereum.
+
+	cpp-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	cpp-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @file Assertions.h
+ * @author Christian <c@ethdev.com>
+ * @date 2015
+ *
+ * Assertion handling.
+ */
+
+#pragma once
+
+#include "Exceptions.h"
+#include "debugbreak.h"
+
+namespace dev
+{
+
+#if defined(_MSC_VER)
+#define ETH_FUNC __FUNCSIG__
+#elif defined(__GNUC__)
+#define ETH_FUNC __PRETTY_FUNCTION__
+#else
+#define ETH_FUNC __func__
+#endif
+
+#define asserts(A) ::dev::assertAux(A, #A, __LINE__, __FILE__, ETH_FUNC)
+#define assertsEqual(A, B) ::dev::assertEqualAux(A, B, #A, #B, __LINE__, __FILE__, ETH_FUNC)
+
+inline bool assertAux(bool _a, char const* _aStr, unsigned _line, char const* _file, char const* _func)
+{
+	bool ret = _a;
+	if (!ret)
+	{
+		std::cerr << "Assertion failed:" << _aStr << " [func=" << _func << ", line=" << _line << ", file=" << _file << "]" << std::endl;
+#if ETH_DEBUG
+		debug_break();
+#endif
+	}
+	return !ret;
+}
+
+template<class A, class B>
+inline bool assertEqualAux(A const& _a, B const& _b, char const* _aStr, char const* _bStr, unsigned _line, char const* _file, char const* _func)
+{
+	bool ret = _a == _b;
+	if (!ret)
+	{
+		std::cerr << "Assertion failed: " << _aStr << " == " << _bStr << " [func=" << _func << ", line=" << _line << ", file=" << _file << "]" << std::endl;
+		std::cerr << "   Fail equality: " << _a << "==" << _b << std::endl;
+#if ETH_DEBUG
+		debug_break();
+#endif
+	}
+	return !ret;
+}
+
+/// Assertion that throws an exception containing the given description if it is not met.
+/// Use it as assertThrow(1 == 1, ExceptionType, "Mathematics is wrong.");
+/// Do NOT supply an exception object as the second parameter.
+#define assertThrow(_condition, _ExceptionType, _description) \
+	::dev::assertThrowAux<_ExceptionType>(_condition, _description, __LINE__, __FILE__, ETH_FUNC)
+
+using errinfo_comment = boost::error_info<struct tag_comment, std::string>;
+
+template <class _ExceptionType>
+inline void assertThrowAux(
+	bool _condition,
+	::std::string const& _errorDescription,
+	unsigned _line,
+	char const* _file,
+	char const* _function
+)
+{
+	if (!_condition)
+		::boost::throw_exception(
+			_ExceptionType() <<
+			::dev::errinfo_comment(_errorDescription) <<
+			::boost::throw_function(_function) <<
+			::boost::throw_file(_file) <<
+			::boost::throw_line(_line)
+		);
+}
+
+template <class _ExceptionType>
+inline void assertThrowAux(
+	void const* _pointer,
+	::std::string const& _errorDescription,
+	unsigned _line,
+	char const* _file,
+	char const* _function
+)
+{
+	assertThrowAux<_ExceptionType>(_pointer != nullptr, _errorDescription, _line, _file, _function);
+}
+
+}