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// Copyright Joakim Karlsson & Kim Gräsman 2010-2012.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef IGLOO_ASSERT_H
#define IGLOO_ASSERT_H
#include "stringize.h"
#include "stringizers.h"
namespace snowhouse {
class Assert
{
public:
template <typename ActualType, typename ConstraintListType>
static void That(const ActualType& actual, ExpressionBuilder<ConstraintListType> expression)
{
const char* no_file = "";
int line_number = 0;
Assert::That(actual, expression, no_file, line_number);
}
template <typename ActualType, typename ConstraintListType>
static void That(const ActualType& actual, ExpressionBuilder<ConstraintListType> expression, const char* file_name, int line_number)
{
try
{
ResultStack result;
OperatorStack operators;
expression.Evaluate(result, operators, actual);
while (!operators.empty())
{
ConstraintOperator* op = operators.top();
op->PerformOperation(result);
operators.pop();
}
if (result.empty())
{
throw InvalidExpressionException("The expression did not yield any result");
}
if (!result.top())
{
throw AssertionException(CreateErrorText(expression, actual), file_name, line_number);
}
}
catch (const InvalidExpressionException& e)
{
throw AssertionException("Malformed expression: \"" + snowhouse::Stringize(expression) + "\"\n" + e.Message());
}
}
template <typename ConstraintListType>
static void That(const char* actual, ExpressionBuilder<ConstraintListType> expression)
{
return That(std::string(actual), expression);
}
template <typename ActualType, typename ExpressionType>
static void That(const ActualType& actual, const ExpressionType& expression)
{
const char* no_file = "";
int no_line = 0;
That(actual, expression, no_file, no_line);
}
template <typename ActualType, typename ExpressionType>
static void That(const ActualType& actual, const ExpressionType& expression, const char* file_name, int line_number)
{
if (!expression(actual))
{
throw AssertionException(CreateErrorText(expression, actual), file_name, line_number);
}
}
template <typename ExpressionType>
static void That(const char* actual, const ExpressionType& expression)
{
return That(std::string(actual), expression);
}
static void That(bool actual)
{
if (!actual)
{
throw AssertionException("Expected: true\nActual: false");
}
}
static void Failure(const std::string& message)
{
throw AssertionException(message);
}
private:
template <class ExpectedType, class ActualType>
static std::string CreateErrorText(const ExpectedType& expected, const ActualType& actual)
{
std::ostringstream str;
str << "Expected: " << snowhouse::Stringize(expected) << std::endl;
str << "Actual: " << snowhouse::Stringize(actual) << std::endl;
return str.str();
}
};
}
#endif // IGLOO_ASSERT_H
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