internal CCNodeOpcode GetNode(int off)
{
CCNodeOpcode node = cfi.GetNode(off);
if (node == null)
{
node = new CCNodeOpcode(cfi, off);
cfi.SetNode(off, node);
}
return(node);
}
internal static CCNodeEntry EnterFunction(FunctionInterpreted fi,
CCStack stack, CCNodeEntry parent, CCNode next)
{
if (Compiler.PrintFunctions != null)
{
fi.Print(Compiler.PrintFunctions, 1);
}
CCLocals locals = new CCLocals(fi.numLocalFieldsCoalesced);
CCFunctionInterpreted cfi = new CCFunctionInterpreted(fi, next);
CCNodeEntry node = new CCNodeEntry(parent, cfi);
cfi.SetNode(0, node);
node.MergeStack(stack);
node.MergeLocals(locals);
/*
* All instances allocated locally by this function must
* have instantiable types.
*/
foreach (XType xt in fi.localEmbedTypes)
{
xt.Close();
}
/*
* Infinite recursion detection: if the same function is
* already present several times in the ancestry,
* complains. (TODO: make the threshold configurable)
*/
int rc = 0;
for (CCNodeEntry e = parent; e != null; e = e.parent)
{
if (e.cfi.fi == fi)
{
if (++rc >= 5)
{
throw new Exception(string.Format("possible infinite recursion on function {0}", fi.DebugName));
}
}
}
return(node);
}