public static int GetNodeSize(kowhai_node_t[] descriptor, out int size)
{
GCHandle h = GCHandle.Alloc(descriptor, GCHandleType.Pinned);
int result = kowhai_get_node_size(h.AddrOfPinnedObject(), out size);
h.Free();
return result;
}
public static int GetNode(kowhai_node_t[] descriptor, kowhai_symbol_t[] symbols, out int offset, out kowhai_node_t node)
{
GCHandle hDesc = GCHandle.Alloc(descriptor, GCHandleType.Pinned);
GCHandle hSyms = GCHandle.Alloc(symbols, GCHandleType.Pinned);
IntPtr targetNode = IntPtr.Zero;
int result = kowhai_get_node(hDesc.AddrOfPinnedObject(), symbols.Length, hSyms.AddrOfPinnedObject(), out offset, ref targetNode);
hSyms.Free();
hDesc.Free();
node = (kowhai_node_t)Marshal.PtrToStructure(targetNode, typeof(kowhai_node_t));
return result;
}
public static kowhai_symbol_t[] GetSymbolPath(kowhai_node_t[] descriptor, kowhai_node_t node, int32_t nodeIndex, uint16_t[] arrayIndexes)
{
Stack<kowhai_symbol_t> syms = new Stack<kowhai_symbol_t>();
for (int i = 0; i <= nodeIndex; i++)
{
kowhai_node_t newNode = descriptor[i];
if (i == nodeIndex)
syms.Push(new kowhai_symbol_t(newNode.symbol, arrayIndexes[syms.Count]));
else if (newNode.type == BRANCH)
syms.Push(new kowhai_symbol_t(newNode.symbol, arrayIndexes[syms.Count]));
else if (newNode.type == BRANCH_END)
syms.Pop();
}
kowhai_symbol_t[] result = syms.ToArray();
Array.Reverse(result);
return result;
}
public Tree(kowhai_node_t[] desc, byte[] data)
{
Descriptor = desc;
Data = data;
}