michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsResourceSet.h"
michael@0: 
michael@0: nsResourceSet::nsResourceSet(const nsResourceSet& aResourceSet)
michael@0:     : mResources(nullptr),
michael@0:       mCount(0),
michael@0:       mCapacity(0)
michael@0: {
michael@0:     ConstIterator last = aResourceSet.Last();
michael@0:     for (ConstIterator resource = aResourceSet.First(); resource != last; ++resource)
michael@0:         Add(*resource);
michael@0: }
michael@0: 
michael@0: 
michael@0: nsResourceSet&
michael@0: nsResourceSet::operator=(const nsResourceSet& aResourceSet)
michael@0: {
michael@0:     Clear();
michael@0:     ConstIterator last = aResourceSet.Last();
michael@0:     for (ConstIterator resource = aResourceSet.First(); resource != last; ++resource)
michael@0:         Add(*resource);
michael@0:     return *this;
michael@0: }
michael@0: 
michael@0: nsResourceSet::~nsResourceSet()
michael@0: {
michael@0:     MOZ_COUNT_DTOR(nsResourceSet);
michael@0:     Clear();
michael@0:     delete[] mResources;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsResourceSet::Clear()
michael@0: {
michael@0:     while (--mCount >= 0) {
michael@0:         NS_RELEASE(mResources[mCount]);
michael@0:     }
michael@0:     mCount = 0;
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsResourceSet::Add(nsIRDFResource* aResource)
michael@0: {
michael@0:     NS_PRECONDITION(aResource != nullptr, "null ptr");
michael@0:     if (! aResource)
michael@0:         return NS_ERROR_NULL_POINTER;
michael@0: 
michael@0:     if (Contains(aResource))
michael@0:         return NS_OK;
michael@0: 
michael@0:     if (mCount >= mCapacity) {
michael@0:         int32_t capacity = mCapacity + 4;
michael@0:         nsIRDFResource** resources = new nsIRDFResource*[capacity];
michael@0:         if (! resources)
michael@0:             return NS_ERROR_OUT_OF_MEMORY;
michael@0: 
michael@0:         for (int32_t i = mCount - 1; i >= 0; --i)
michael@0:             resources[i] = mResources[i];
michael@0: 
michael@0:         delete[] mResources;
michael@0: 
michael@0:         mResources = resources;
michael@0:         mCapacity = capacity;
michael@0:     }
michael@0: 
michael@0:     mResources[mCount++] = aResource;
michael@0:     NS_ADDREF(aResource);
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsResourceSet::Remove(nsIRDFResource* aProperty)
michael@0: {
michael@0:     bool found = false;
michael@0: 
michael@0:     nsIRDFResource** res = mResources;
michael@0:     nsIRDFResource** limit = mResources + mCount;
michael@0:     while (res < limit) {
michael@0:         if (found) {
michael@0:             *(res - 1) = *res;
michael@0:         }
michael@0:         else if (*res == aProperty) {
michael@0:             NS_RELEASE(*res);
michael@0:             found = true;
michael@0:         }
michael@0:         ++res;
michael@0:     }
michael@0: 
michael@0:     if (found)
michael@0:         --mCount;
michael@0: }
michael@0: 
michael@0: bool
michael@0: nsResourceSet::Contains(nsIRDFResource* aResource) const
michael@0: {
michael@0:     for (int32_t i = mCount - 1; i >= 0; --i) {
michael@0:         if (mResources[i] == aResource)
michael@0:             return true;
michael@0:     }
michael@0: 
michael@0:     return false;
michael@0: }
michael@0: