void
nsGenConList::Insert(nsGenConNode* aNode)
{
if (mFirstNode) {
// Check for append.
if (NodeAfter(aNode, Prev(mFirstNode))) {
PR_INSERT_BEFORE(aNode, mFirstNode);
}
else {
// Binary search.
// the range of indices at which |aNode| could end up.
// (We already know it can't be at index mSize.)
PRUint32 first = 0, last = mSize - 1;
// A cursor to avoid walking more than the length of the list.
nsGenConNode *curNode = Prev(mFirstNode);
PRUint32 curIndex = mSize - 1;
while (first != last) {
PRUint32 test = (first + last) / 2;
if (last == curIndex) {
for ( ; curIndex != test; --curIndex)
curNode = Prev(curNode);
} else {
for ( ; curIndex != test; ++curIndex)
curNode = Next(curNode);
}
if (NodeAfter(aNode, curNode)) {
first = test + 1;
// if we exit the loop, we need curNode to be right
++curIndex;
curNode = Next(curNode);
} else {
last = test;
}
}
PR_INSERT_BEFORE(aNode, curNode);
if (curNode == mFirstNode) {
mFirstNode = aNode;
}
}
}
else {
// initialize list with first node
PR_INIT_CLIST(aNode);
mFirstNode = aNode;
}
++mSize;
NS_ASSERTION(aNode == mFirstNode || NodeAfter(aNode, Prev(aNode)),
"sorting error");
NS_ASSERTION(IsLast(aNode) || NodeAfter(Next(aNode), aNode),
"sorting error");
}
void
nsGenConList::Insert(nsGenConNode* aNode)
{
// Check for append.
if (mList.isEmpty() || NodeAfter(aNode, mList.getLast())) {
mList.insertBack(aNode);
} else {
// Binary search.
// the range of indices at which |aNode| could end up.
// (We already know it can't be at index mSize.)
uint32_t first = 0, last = mSize - 1;
// A cursor to avoid walking more than the length of the list.
nsGenConNode* curNode = mList.getLast();
uint32_t curIndex = mSize - 1;
while (first != last) {
uint32_t test = (first + last) / 2;
if (last == curIndex) {
for ( ; curIndex != test; --curIndex)
curNode = Prev(curNode);
} else {
for ( ; curIndex != test; ++curIndex)
curNode = Next(curNode);
}
if (NodeAfter(aNode, curNode)) {
first = test + 1;
// if we exit the loop, we need curNode to be right
++curIndex;
curNode = Next(curNode);
} else {
last = test;
}
}
curNode->setPrevious(aNode);
}
++mSize;
// Set the mapping only if it is the first node of the frame.
// The DEBUG blocks below are for ensuring the invariant required by
// nsGenConList::DestroyNodesFor. See comment there.
if (IsFirst(aNode) ||
Prev(aNode)->mPseudoFrame != aNode->mPseudoFrame) {
#ifdef DEBUG
if (nsGenConNode* oldFrameFirstNode = mNodes.Get(aNode->mPseudoFrame)) {
MOZ_ASSERT(Next(aNode) == oldFrameFirstNode,
"oldFrameFirstNode should now be immediately after "
"the newly-inserted one.");
} else {
// If the node is not the only node in the list.
if (!IsFirst(aNode) || !IsLast(aNode)) {
nsGenConNode* nextNode = Next(aNode);
MOZ_ASSERT(!nextNode || nextNode->mPseudoFrame != aNode->mPseudoFrame,
"There shouldn't exist any node for this frame.");
// If the node is neither the first nor the last node
if (!IsFirst(aNode) && !IsLast(aNode)) {
MOZ_ASSERT(Prev(aNode)->mPseudoFrame != nextNode->mPseudoFrame,
"New node should not break contiguity of nodes of "
"the same frame.");
}
}
}
#endif
mNodes.Put(aNode->mPseudoFrame, aNode);
} else {
#ifdef DEBUG
nsGenConNode* frameFirstNode = mNodes.Get(aNode->mPseudoFrame);
MOZ_ASSERT(frameFirstNode, "There should exist node map for the frame.");
for (nsGenConNode* curNode = Prev(aNode);
curNode != frameFirstNode; curNode = Prev(curNode)) {
MOZ_ASSERT(curNode->mPseudoFrame == aNode->mPseudoFrame,
"Every node between frameFirstNode and the new node inserted "
"should refer to the same frame.");
MOZ_ASSERT(!IsFirst(curNode),
"The newly-inserted node should be in a contiguous run after "
"frameFirstNode, thus frameFirstNode should be reached before "
"the first node of mList.");
}
#endif
}
NS_ASSERTION(IsFirst(aNode) || NodeAfter(aNode, Prev(aNode)),
"sorting error");
NS_ASSERTION(IsLast(aNode) || NodeAfter(Next(aNode), aNode),
"sorting error");
}
status_t ArpIndexedList::NodeAt(int32 index, ArpIndexedNode **node,
int32 findNode, int32 direction) {
if (direction == ARP_BACKWARDS) return(NodeBefore(index, node, findNode));
if (direction == ARP_FORWARDS) return(NodeAfter(index, node, findNode));
return B_ERROR;
}
