refactor: 💥 basic_concepts, quantity and quantity_cast refactored

BREAKING CHANGE:  ScalableNumber renamed to QuantityValue

Resolves #107

test/unit_test/static/concepts_test.cpp

@@ -0,0 +1,130 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2018 Mateusz Pusz
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#include "units/physical/si/cgs/derived/speed.h"
+#include "units/physical/si/derived/speed.h"
+#include "units/physical/si/fps/derived/speed.h"
+#include "units/quantity_point.h"
+#include <chrono>
+#include <complex>
+#include <mutex>
+#include <optional>
+#include <string>
+
+namespace {
+
+using namespace units;
+using namespace units::physical;
+
+// Prefix family
+
+static_assert(PrefixFamily<si::prefix>);
+static_assert(!PrefixFamily<si::kilo>);
+
+// Prefix
+
+static_assert(Prefix<si::kilo>);
+static_assert(!Prefix<si::prefix>);
+static_assert(!Prefix<std::kilo>);
+
+// UnitRatio
+
+static_assert(UnitRatio<ratio(1000)>);
+static_assert(!UnitRatio<ratio(0)>);
+// static_assert(UnitRatio<ratio(1000, 0)>);  // static_assert in ratio
+static_assert(UnitRatio<ratio(-1000, -1)>);
+static_assert(!UnitRatio<ratio(-1000, 1)>);
+static_assert(!UnitRatio<ratio(1, -1000)>);
+
+// BaseDimension
+
+static_assert(BaseDimension<si::dim_length>);
+static_assert(!BaseDimension<si::dim_speed>);
+static_assert(!BaseDimension<int>);
+
+// DerivedDimension
+
+static_assert(DerivedDimension<si::dim_speed>);
+static_assert(!DerivedDimension<si::dim_length>);
+static_assert(!DerivedDimension<int>);
+
+// Dimension
+
+static_assert(Dimension<si::dim_length>);
+static_assert(Dimension<si::dim_speed>);
+static_assert(!Dimension<si::metre>);
+static_assert(!Dimension<int>);
+static_assert(!Dimension<std::chrono::seconds>);
+
+// Unit
+
+static_assert(Unit<si::metre>);
+static_assert(Unit<si::kilometre>);
+static_assert(Unit<si::fps::mile>);
+static_assert(Unit<si::metre_per_second>);
+static_assert(!Unit<si::dim_length>);
+static_assert(!Unit<int>);
+static_assert(!Unit<std::chrono::seconds>);
+
+// UnitOf
+
+static_assert(UnitOf<si::metre, si::dim_length>);
+static_assert(UnitOf<si::kilometre, si::dim_length>);
+static_assert(UnitOf<si::fps::mile, si::dim_length>);
+static_assert(!UnitOf<si::second, si::dim_length>);
+
+// QuantityValue
+
+static_assert(QuantityValue<int>);
+static_assert(QuantityValue<std::complex<double>>);
+static_assert(!QuantityValue<si::length<si::metre>>);
+static_assert(!QuantityValue<std::optional<si::length<si::metre>>>);
+static_assert(!QuantityValue<std::mutex>);
+static_assert(!QuantityValue<std::string>);
+
+// Quantity
+
+static_assert(Quantity<si::length<si::metre>>);
+static_assert(!Quantity<std::chrono::seconds>);
+static_assert(!Quantity<quantity_point<si::dim_length, si::metre>>);
+
+// QuantityPoint
+
+static_assert(QuantityPoint<quantity_point<si::dim_length, si::metre>>);
+static_assert(!QuantityPoint<si::length<si::metre>>);
+static_assert(!QuantityPoint<std::chrono::seconds>);
+
+// WrappedQuantity
+
+static_assert(wrapped_quantity_<std::optional<si::length<si::metre>>>);
+static_assert(!wrapped_quantity_<std::pair<si::length<si::metre>, si::length<si::metre>>>);
+
+// QuantityOf
+
+static_assert(QuantityOf<si::length<si::metre>, si::dim_length>);
+// TODO it seems `QuantityOf` is a bad name if `si::cgs::length<si::cgs::centimetre>` matches `si::fps::dim_length`
+static_assert(QuantityOf<si::cgs::length<si::cgs::centimetre>, si::dim_length>);
+static_assert(QuantityOf<si::cgs::length<si::metre>, si::dim_length>);
+static_assert(QuantityOf<si::cgs::length<si::cgs::centimetre>, si::fps::dim_length>);
+static_assert(!QuantityOf<si::cgs::length<si::cgs::centimetre>, si::dim_time>);
+
+}  // namespace