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Trying to make an iterative assimilate()

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This commit is contained in:
Derek Foreman 2002-12-30 07:28:42 +00:00
parent 624a06fdff
commit ee14d8a3cc
1 changed files with 16 additions and 23 deletions
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39
src/bindings.cc
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@ -113,37 +113,30 @@ OBBindings::~OBBindings()
static void assimilate(BindingTree *parent, BindingTree *node)
{
BindingTree *p, *lastsib, *nextparent, *nextnode = node->first_child;
BindingTree *a, *b, *tmp, *last;
if (!parent->first_child) {
// there are no nodes at this level yet
parent->first_child = node;
nextparent = node;
return;
} else {
p = lastsib = parent->first_child;
while (p->next_sibling) {
p = p->next_sibling;
lastsib = p; // finds the last sibling
if (p->binding == node->binding) {
// found an identical binding..
assert(node->chain && p->chain);
delete node; // kill the one we aren't using
printf("using existing node\n");
break;
a = parent->first_child;
last = a;
b = node;
while (a->first_child) {
last = a;
if (a->binding != b->binding) {
a = a->next_sibling;
} else {
tmp = b;
b = b->first_child;
delete tmp;
a = a->first_child;
}
}
if (!p) {
// couldn't find an existing binding, use this new one, and insert it
// into the list
p = lastsib->next_sibling = node;
printf("inserting %s\n", p->text.c_str());
}
nextparent = p;
last->first_child = b->first_child;
delete b;
}
if (nextnode)
assimilate(nextparent, nextnode);
}