static boolean isWideningConversion()

in junit-platform-commons/src/main/java/org/junit/platform/commons/util/ReflectionUtils.java [411:464]

42 lines of code
20 McCabe index (conditional complexity)


	static boolean isWideningConversion(Class<?> sourceType, Class<?> targetType) {
		Preconditions.condition(targetType.isPrimitive(), "targetType must be primitive");

		boolean isPrimitive = sourceType.isPrimitive();
		boolean isWrapper = primitiveToWrapperMap.containsValue(sourceType);

		// Neither a primitive nor a wrapper?
		if (!isPrimitive && !isWrapper) {
			return false;
		}

		if (isPrimitive) {
			sourceType = primitiveToWrapperMap.get(sourceType);
		}

		// @formatter:off
		if (sourceType == Byte.class) {
			return
					targetType == short.class ||
					targetType == int.class ||
					targetType == long.class ||
					targetType == float.class ||
					targetType == double.class;
		}

		if (sourceType == Short.class || sourceType == Character.class) {
			return
					targetType == int.class ||
					targetType == long.class ||
					targetType == float.class ||
					targetType == double.class;
		}

		if (sourceType == Integer.class) {
			return
					targetType == long.class ||
					targetType == float.class ||
					targetType == double.class;
		}

		if (sourceType == Long.class) {
			return
					targetType == float.class ||
					targetType == double.class;
		}

		if (sourceType == Float.class) {
			return
					targetType == double.class;
		}
		// @formatter:on

		return false;
	}