// © 2016 and later: Unicode, Inc. and others.

// License & terms of use: http://www.unicode.org/copyright.html

/*

**********************************************************************

*   Copyright (C) 2003-2011, International Business Machines

*   Corporation and others.  All Rights Reserved.

**********************************************************************

*/

#include "uvector.h"

U_NAMESPACE_BEGIN

UOBJECT_DEFINE_RTTI_IMPLEMENTATION(UStack)

UStack::UStack(UErrorCode &status) :

    UVector(status)

{

}

UStack::UStack(int32_t initialCapacity, UErrorCode &status) :

    UVector(initialCapacity, status)

{

}

UStack::UStack(UObjectDeleter *d, UElementsAreEqual *c, UErrorCode &status) :

    UVector(d, c, status)

{

}

UStack::UStack(UObjectDeleter *d, UElementsAreEqual *c, int32_t initialCapacity, UErrorCode &status) :

    UVector(d, c, initialCapacity, status)

{

}

UStack::~UStack() {}

void* UStack::pop() {

    int32_t n = size() - 1;

    void* result = nullptr;

    if (n >= 0) {

        result = orphanElementAt(n);

    }

    return result;

}

int32_t UStack::popi() {

    int32_t n = size() - 1;

    int32_t result = 0;

    if (n >= 0) {

        result = elementAti(n);

        removeElementAt(n);

    }

    return result;

}

int32_t UStack::search(void* obj) const {

    int32_t i = indexOf(obj);

    return (i >= 0) ? size() - i : i;

}

U_NAMESPACE_END