Add missing file.

lib/base/value-operators.cpp

@@ -0,0 +1,555 @@
+/******************************************************************************
+ * Icinga 2                                                                   *
+ * Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org)    *
+ *                                                                            *
+ * This program 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 2             *
+ * of the License, or (at your option) any later version.                     *
+ *                                                                            *
+ * This program 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 this program; if not, write to the Free Software Foundation     *
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
+ ******************************************************************************/
+
+#include "base/application.h"
+#include "base/array.h"
+#include "base/logger_fwd.h"
+#include "base/utility.h"
+#include <cJSON.h>
+#include <boost/lexical_cast.hpp>
+
+using namespace icinga;
+
+Value::operator double(void) const
+{
+	const double *value = boost::get<double>(&m_Value);
+
+	if (value)
+		return *value;
+
+	if (IsEmpty())
+		return 0;
+
+	return boost::lexical_cast<double>(m_Value);
+}
+
+Value::operator String(void) const
+{
+	Object *object;
+	double integral, fractional;
+
+	switch (GetType()) {
+		case ValueEmpty:
+			return String();
+		case ValueNumber:
+			fractional = modf(boost::get<double>(m_Value), &integral);
+
+			if (fractional != 0)
+				return boost::lexical_cast<String>(m_Value);
+			else
+				return boost::lexical_cast<String>((long)integral);
+		case ValueString:
+			return boost::get<String>(m_Value);
+		case ValueObject:
+			object = boost::get<Object::Ptr>(m_Value).get();
+			return "Object of type '" + Utility::GetTypeName(typeid(*object)) + "'";
+		default:
+			BOOST_THROW_EXCEPTION(std::runtime_error("Unknown value type."));
+	}
+}
+
+std::ostream& icinga::operator<<(std::ostream& stream, const Value& value)
+{
+	stream << static_cast<String>(value);
+	return stream;
+}
+
+std::istream& icinga::operator>>(std::istream& stream, Value& value)
+{
+	String tstr;
+	stream >> tstr;
+	value = tstr;
+	return stream;
+}
+
+bool Value::operator==(bool rhs) const
+{
+	return *this == Value(rhs);
+}
+
+bool Value::operator!=(bool rhs) const
+{
+	return !(*this == rhs);
+}
+
+bool Value::operator==(int rhs) const
+{
+	return *this == Value(rhs);
+}
+
+bool Value::operator!=(int rhs) const
+{
+	return !(*this == rhs);
+}
+
+bool Value::operator==(double rhs) const
+{
+	return *this == Value(rhs);
+}
+
+bool Value::operator!=(double rhs) const
+{
+	return !(*this == rhs);
+}
+
+bool Value::operator==(const char *rhs) const
+{
+	return static_cast<String>(*this) == rhs;
+}
+
+bool Value::operator!=(const char *rhs) const
+{
+	return !(*this == rhs);
+}
+
+bool Value::operator==(const String& rhs) const
+{
+	return static_cast<String>(*this) == rhs;
+}
+
+bool Value::operator!=(const String& rhs) const
+{
+	return !(*this == rhs);
+}
+
+bool Value::operator==(const Value& rhs) const
+{
+	if (IsEmpty() != rhs.IsEmpty())
+		return false;
+
+	if (IsEmpty())
+		return true;
+
+	if (IsObject() != rhs.IsObject())
+		return false;
+
+	if (IsObject()) {
+		if (IsObjectType<Array>() && rhs.IsObjectType<Array>()) {
+			Array::Ptr arr1 = *this;
+			Array::Ptr arr2 = rhs;
+
+			if (arr1 == arr2)
+				return true;
+
+			if (arr1->GetLength() != arr2->GetLength())
+				return false;
+
+			for (int i = 0; i < arr1->GetLength(); i++) {
+				if (arr1->Get(i) != arr2->Get(i))
+					return false;
+			}
+
+			return true;
+		}
+
+		return static_cast<Object::Ptr>(*this) == static_cast<Object::Ptr>(rhs);
+	}
+
+	if ((IsNumber() || IsEmpty()) && (rhs.IsNumber() || rhs.IsEmpty()) && !(IsEmpty() && rhs.IsEmpty()))
+		return static_cast<double>(*this) == static_cast<double>(rhs);
+
+	if ((IsString() || IsEmpty()) && (rhs.IsString() || rhs.IsEmpty()) && !(IsEmpty() && rhs.IsEmpty()))
+		return static_cast<String>(*this) == static_cast<String>(rhs);
+
+	return false;
+}
+
+bool Value::operator!=(const Value& rhs) const
+{
+	return !(*this == rhs);
+}
+
+Value icinga::operator+(const Value& lhs, const char *rhs)
+{
+	return lhs + Value(rhs);
+}
+
+Value icinga::operator+(const char *lhs, const Value& rhs)
+{
+	return Value(lhs) + rhs;
+}
+
+Value icinga::operator+(const Value& lhs, const String& rhs)
+{
+	return lhs + Value(rhs);
+}
+
+Value icinga::operator+(const String& lhs, const Value& rhs)
+{
+	return Value(lhs) + rhs;
+}
+
+Value icinga::operator+(const Value& lhs, const Value& rhs)
+{
+	if ((lhs.IsString() || lhs.IsEmpty()) && (rhs.IsString() || rhs.IsEmpty()) && !(lhs.IsEmpty() && rhs.IsEmpty()))
+		return static_cast<String>(lhs) + static_cast<String>(rhs);
+	else if ((lhs.IsNumber() || lhs.IsEmpty()) && (rhs.IsNumber() || rhs.IsEmpty()) && !(lhs.IsEmpty() && rhs.IsEmpty()))
+		return static_cast<double>(lhs) + static_cast<double>(rhs);
+	else if (lhs.IsObjectType<Array>() && rhs.IsObjectType<Array>()) {
+		Array::Ptr result = make_shared<Array>();
+		static_cast<Array::Ptr>(lhs)->CopyTo(result);
+		static_cast<Array::Ptr>(rhs)->CopyTo(result);
+		return result;
+	} else {
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Operator + cannot be applied to values of type '" + lhs.GetTypeName() + "' and '" + rhs.GetTypeName() + "'"));
+	}
+}
+
+Value icinga::operator+(const Value& lhs, double rhs)
+{
+	return lhs + Value(rhs);
+}
+
+Value icinga::operator+(double lhs, const Value& rhs)
+{
+	return Value(lhs) + rhs;
+}
+
+Value icinga::operator+(const Value& lhs, int rhs)
+{
+	return lhs + Value(rhs);
+}
+
+Value icinga::operator+(int lhs, const Value& rhs)
+{
+	return Value(lhs) + rhs;
+}
+
+Value icinga::operator-(const Value& lhs, const Value& rhs)
+{
+	if ((lhs.IsNumber() || lhs.IsEmpty()) && (rhs.IsNumber() || rhs.IsEmpty()) && !(lhs.IsEmpty() && rhs.IsEmpty()))
+		return static_cast<double>(lhs) - static_cast<double>(rhs);
+	else
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Operator - cannot be applied to values of type '" + lhs.GetTypeName() + "' and '" + rhs.GetTypeName() + "'"));
+}
+
+Value icinga::operator-(const Value& lhs, double rhs)
+{
+	return lhs - Value(rhs);
+}
+
+Value icinga::operator-(double lhs, const Value& rhs)
+{
+	return Value(lhs) - rhs;
+}
+
+Value icinga::operator-(const Value& lhs, int rhs)
+{
+	return lhs - Value(rhs);
+}
+
+Value icinga::operator-(int lhs, const Value& rhs)
+{
+	return Value(lhs) - rhs;
+}
+
+Value icinga::operator*(const Value& lhs, const Value& rhs)
+{
+	if ((lhs.IsNumber() || lhs.IsEmpty()) && (rhs.IsNumber() || rhs.IsEmpty()) && !(lhs.IsEmpty() && rhs.IsEmpty()))
+		return static_cast<double>(lhs) * static_cast<double>(rhs);
+	else
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Operator * cannot be applied to values of type '" + lhs.GetTypeName() + "' and '" + rhs.GetTypeName() + "'"));
+}
+
+Value icinga::operator*(const Value& lhs, double rhs)
+{
+	return lhs * Value(rhs);
+}
+
+Value icinga::operator*(double lhs, const Value& rhs)
+{
+	return Value(lhs) * rhs;
+}
+
+Value icinga::operator*(const Value& lhs, int rhs)
+{
+	return lhs * Value(rhs);
+}
+
+Value icinga::operator*(int lhs, const Value& rhs)
+{
+	return Value(lhs) * rhs;
+}
+
+Value icinga::operator/(const Value& lhs, const Value& rhs)
+{
+	if (lhs.IsEmpty())
+		return 0;
+	else if (rhs.IsEmpty())
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Right-hand side argument for operator / is Empty."));
+	else if (lhs.IsNumber() && rhs.IsNumber()) {
+		if (static_cast<double>(rhs) == 0)
+			BOOST_THROW_EXCEPTION(std::invalid_argument("Right-hand side argument for operator / is 0."));
+
+		return static_cast<double>(lhs) / static_cast<double>(rhs);
+	} else
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Operator / cannot be applied to values of type '" + lhs.GetTypeName() + "' and '" + rhs.GetTypeName() + "'"));
+}
+
+Value icinga::operator/(const Value& lhs, double rhs)
+{
+	return lhs / Value(rhs);
+}
+
+Value icinga::operator/(double lhs, const Value& rhs)
+{
+	return Value(lhs) / rhs;
+}
+
+Value icinga::operator/(const Value& lhs, int rhs)
+{
+	return lhs / Value(rhs);
+}
+
+Value icinga::operator/(int lhs, const Value& rhs)
+{
+	return Value(lhs) / rhs;
+}
+
+Value icinga::operator&(const Value& lhs, const Value& rhs)
+{
+	if ((lhs.IsNumber() || lhs.IsEmpty()) && (rhs.IsNumber() || rhs.IsEmpty()) && !(lhs.IsEmpty() && rhs.IsEmpty()))
+		return static_cast<int>(lhs) & static_cast<int>(rhs);
+	else
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Operator & cannot be applied to values of type '" + lhs.GetTypeName() + "' and '" + rhs.GetTypeName() + "'"));
+}
+
+Value icinga::operator&(const Value& lhs, double rhs)
+{
+	return lhs & Value(rhs);
+}
+
+Value icinga::operator&(double lhs, const Value& rhs)
+{
+	return Value(lhs) & rhs;
+}
+
+Value icinga::operator&(const Value& lhs, int rhs)
+{
+	return lhs & Value(rhs);
+}
+
+Value icinga::operator&(int lhs, const Value& rhs)
+{
+	return Value(lhs) & rhs;
+}
+
+Value icinga::operator|(const Value& lhs, const Value& rhs)
+{
+	if ((lhs.IsNumber() || lhs.IsEmpty()) && (rhs.IsNumber() || rhs.IsEmpty()) && !(lhs.IsEmpty() && rhs.IsEmpty()))
+		return static_cast<int>(lhs) | static_cast<int>(rhs);
+	else
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Operator | cannot be applied to values of type '" + lhs.GetTypeName() + "' and '" + rhs.GetTypeName() + "'"));
+}
+
+Value icinga::operator|(const Value& lhs, double rhs)
+{
+	return lhs | Value(rhs);
+}
+
+Value icinga::operator|(double lhs, const Value& rhs)
+{
+	return Value(lhs) | rhs;
+}
+
+Value icinga::operator|(const Value& lhs, int rhs)
+{
+	return lhs | Value(rhs);
+}
+
+Value icinga::operator|(int lhs, const Value& rhs)
+{
+	return Value(lhs) | rhs;
+}
+
+Value icinga::operator<<(const Value& lhs, const Value& rhs)
+{
+	if ((lhs.IsNumber() || lhs.IsEmpty()) && (rhs.IsNumber() || rhs.IsEmpty()) && !(lhs.IsEmpty() && rhs.IsEmpty()))
+		return static_cast<int>(lhs) << static_cast<int>(rhs);
+	else
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Operator << cannot be applied to values of type '" + lhs.GetTypeName() + "' and '" + rhs.GetTypeName() + "'"));
+}
+
+Value icinga::operator<<(const Value& lhs, double rhs)
+{
+	return lhs << Value(rhs);
+}
+
+Value icinga::operator<<(double lhs, const Value& rhs)
+{
+	return Value(lhs) << rhs;
+}
+
+Value icinga::operator<<(const Value& lhs, int rhs)
+{
+	return lhs << Value(rhs);
+}
+
+Value icinga::operator<<(int lhs, const Value& rhs)
+{
+	return Value(lhs) << rhs;
+}
+
+Value icinga::operator>>(const Value& lhs, const Value& rhs)
+{
+	if ((lhs.IsNumber() || lhs.IsEmpty()) && (rhs.IsNumber() || rhs.IsEmpty()) && !(lhs.IsEmpty() && rhs.IsEmpty()))
+		return static_cast<int>(lhs) >> static_cast<int>(rhs);
+	else
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Operator >> cannot be applied to values of type '" + lhs.GetTypeName() + "' and '" + rhs.GetTypeName() + "'"));
+}
+
+Value icinga::operator>>(const Value& lhs, double rhs)
+{
+	return lhs >> Value(rhs);
+}
+
+Value icinga::operator>>(double lhs, const Value& rhs)
+{
+	return Value(lhs) >> rhs;
+}
+
+Value icinga::operator>>(const Value& lhs, int rhs)
+{
+	return lhs >> Value(rhs);
+}
+
+Value icinga::operator>>(int lhs, const Value& rhs)
+{
+	return Value(lhs) >> rhs;
+}
+
+Value icinga::operator<(const Value& lhs, const Value& rhs)
+{
+	if (lhs.IsString() && rhs.IsString())
+		return static_cast<String>(lhs) < static_cast<String>(rhs);
+	else if ((lhs.IsNumber() || lhs.IsEmpty()) && (rhs.IsNumber() || rhs.IsEmpty()) && !(lhs.IsEmpty() && rhs.IsEmpty()))
+		return static_cast<int>(lhs) < static_cast<int>(rhs);
+	else
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Operator < cannot be applied to values of type '" + lhs.GetTypeName() + "' and '" + rhs.GetTypeName() + "'"));
+}
+
+Value icinga::operator<(const Value& lhs, double rhs)
+{
+	return lhs < Value(rhs);
+}
+
+Value icinga::operator<(double lhs, const Value& rhs)
+{
+	return Value(lhs) < rhs;
+}
+
+Value icinga::operator<(const Value& lhs, int rhs)
+{
+	return lhs < Value(rhs);
+}
+
+Value icinga::operator<(int lhs, const Value& rhs)
+{
+	return Value(lhs) < rhs;
+}
+
+Value icinga::operator>(const Value& lhs, const Value& rhs)
+{
+	if (lhs.IsString() && rhs.IsString())
+		return static_cast<String>(lhs) > static_cast<String>(rhs);
+	else if ((lhs.IsNumber() || lhs.IsEmpty()) && (rhs.IsNumber() || rhs.IsEmpty()) && !(lhs.IsEmpty() && rhs.IsEmpty()))
+		return static_cast<int>(lhs) > static_cast<int>(rhs);
+	else
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Operator > cannot be applied to values of type '" + lhs.GetTypeName() + "' and '" + rhs.GetTypeName() + "'"));
+}
+
+Value icinga::operator>(const Value& lhs, double rhs)
+{
+	return lhs > Value(rhs);
+}
+
+Value icinga::operator>(double lhs, const Value& rhs)
+{
+	return Value(lhs) > rhs;
+}
+
+Value icinga::operator>(const Value& lhs, int rhs)
+{
+	return lhs > Value(rhs);
+}
+
+Value icinga::operator>(int lhs, const Value& rhs)
+{
+	return Value(lhs) > rhs;
+}
+
+Value icinga::operator<=(const Value& lhs, const Value& rhs)
+{
+	if (lhs.IsString() && rhs.IsString())
+		return static_cast<String>(lhs) <= static_cast<String>(rhs);
+	else if ((lhs.IsNumber() || lhs.IsEmpty()) && (rhs.IsNumber() || rhs.IsEmpty()) && !(lhs.IsEmpty() && rhs.IsEmpty()))
+		return static_cast<int>(lhs) <= static_cast<int>(rhs);
+	else
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Operator <= cannot be applied to values of type '" + lhs.GetTypeName() + "' and '" + rhs.GetTypeName() + "'"));
+}
+
+Value icinga::operator<=(const Value& lhs, double rhs)
+{
+	return lhs <= Value(rhs);
+}
+
+Value icinga::operator<=(double lhs, const Value& rhs)
+{
+	return Value(lhs) <= rhs;
+}
+
+Value icinga::operator<=(const Value& lhs, int rhs)
+{
+	return lhs <= Value(rhs);
+}
+
+Value icinga::operator<=(int lhs, const Value& rhs)
+{
+	return Value(lhs) <= rhs;
+}
+
+Value icinga::operator>=(const Value& lhs, const Value& rhs)
+{
+	if (lhs.IsString() && rhs.IsString())
+		return static_cast<String>(lhs) >= static_cast<String>(rhs);
+	else if ((lhs.IsNumber() || lhs.IsEmpty()) && (rhs.IsNumber() || rhs.IsEmpty()) && !(lhs.IsEmpty() && rhs.IsEmpty()))
+		return static_cast<int>(lhs) >= static_cast<int>(rhs);
+	else
+		BOOST_THROW_EXCEPTION(std::invalid_argument("Operator >= cannot be applied to values of type '" + lhs.GetTypeName() + "' and '" + rhs.GetTypeName() + "'"));
+}
+
+Value icinga::operator>=(const Value& lhs, double rhs)
+{
+	return lhs >= Value(rhs);
+}
+
+Value icinga::operator>=(double lhs, const Value& rhs)
+{
+	return Value(lhs) >= rhs;
+}
+
+Value icinga::operator>=(const Value& lhs, int rhs)
+{
+	return lhs >= Value(rhs);
+}
+
+Value icinga::operator>=(int lhs, const Value& rhs)
+{
+	return Value(lhs) >= rhs;
+}