sample3.cpp

/*******************************************************************************
 * Copyright (c) 2015, 2018 IBM Corp. and others
 *
 * This program and the accompanying materials are made available under
 * the terms of the Eclipse Public License 2.0 which accompanies this
 * distribution and is available at http://eclipse.org/legal/epl-2.0
 * or the Apache License, Version 2.0 which accompanies this distribution
 * and is available at https://www.apache.org/licenses/LICENSE-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License, v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception [1] and GNU General Public
 * License, version 2 with the OpenJDK Assembly Exception [2].
 *
 * [1] https://www.gnu.org/software/classpath/license.html
 * [2] http://openjdk.java.net/legal/assembly-exception.html
 *
 * SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
 *******************************************************************************/

#include <stdint.h>
#include <iostream>

struct S3 {
	//volatile field
	volatile uint8_t q;
	//const field
	const uint8_t r;
};

struct S3 instanceOfS3 = { 1, 4 };

// typedef of pointer type
typedef S3 *pS3;

// multiple inheritance
class Vehicle
{
public:
	double speed;
	Vehicle(double speedIn) : speed(speedIn) {}
};

class Toy
{
public:
	int durability;
	Toy(int durabilityIn) : durability(durabilityIn) {}
};

class MatchboxCar : public Vehicle, public Toy
{
public:
	int hasWheels;
	MatchboxCar(int hasWheelsIn, double speedIn, int durabilityIn)
		: Vehicle(speedIn), Toy(durabilityIn), hasWheels(hasWheelsIn)
	{
	}
};

/* Function pointer */
typedef void VOID;
typedef VOID *(*FunctionPointer)();

/* Array and pointer typedef test */
typedef int *INT[2];
typedef INT *INT_ARRAY[10];

struct StructWithFunctionPointer {
	FunctionPointer functionPointer;
	INT_ARRAY i;
};

struct StructWithFunctionPointer structFunctionPointer;

//struct with base types
struct S4 {
	int i;
	long l;
	double d;
	char c;
	bool b;
};
struct S4 instanceOfS4 = { 0, 1L, 3.8, 'c', true };

// Multiple untagged struct definitions inside a scope.
struct Outer {
	struct {
		uint8_t ui8;
	} innerField1;
	struct {
		int16_t i16;
	} innerField2;
	struct {
		struct InnerStruct {
			int32_t i32;
		};
		InnerStruct innerStruct;
	} innerField3;
};

struct Outer instanceOfOuter = { { 2 }, { 4 }, { { 6 } } };

// Two different classes with inner classes of the same name.
class OuterClassWithDifferentName1
{
private:
	class InnerClassWithSameName
	{
	public:
		double g;
		virtual void nop();
	};
	InnerClassWithSameName instanceOfInnerClassWithSameName;
public:
	virtual void nop();
};

OuterClassWithDifferentName1 instanceOfOuterClassWithDifferentName1;

class OuterClassWithDifferentName2
{
private:
	class InnerClassWithSameName
	{
	public:
		double h;
	};
	InnerClassWithSameName instanceOfInnerClassWithSameName;
public:
};

OuterClassWithDifferentName2 instanceOfOuterClassWithDifferentName2;

//Template class
template <class T>
class Complex
{
	T real, imaginary;
public:
	Complex(T realIn, T imaginaryIn)
	{
		real = realIn;
		imaginary = imaginaryIn;
	}
};

Complex<int> instanceOfComplex1(100, 75);
Complex<double> instanceOfComplex2(64.829, 23.42);

// Array field with base type defined in a typedef
typedef unsigned int UDATA2;
UDATA2 instanceOfUDATA2;

struct SArrayWithTypedefType {
	UDATA2 arrayWithTypedefType[12];
};

struct SArrayWithTypedefType instanceOfSArrayWithTypedefType = { { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 } };

void
sample3()
{
	std::cout << "\ninstanceOfS3.q: " << (unsigned int)instanceOfS3.q << std::endl;
	std::cout << "instanceOfS3.r: " << (unsigned int)instanceOfS3.r << std::endl;

	instanceOfS3.q = 2;

	pS3 ps3 = &instanceOfS3;

	std::cout << "ps3->q: " << (unsigned int)ps3->q << std::endl;
	std::cout << "ps3->r: " << (unsigned int)ps3->r << std::endl;

	MatchboxCar matchboxCar(1, 10.7, 10);

	std::cout << "matchboxCar.speed: " << (double)matchboxCar.speed << std::endl;
	std::cout << "matchboxCar.durability: " << matchboxCar.durability << std::endl;
	std::cout << "matchboxCar.hasWheels: " << matchboxCar.hasWheels << std::endl;

	std::cout << "functionPointer: " << structFunctionPointer.functionPointer << std::endl;
}

void OuterClassWithDifferentName1::nop() {}
void OuterClassWithDifferentName1::InnerClassWithSameName::nop() {}