public static Block FindCommonParent(Block a, Block b)
{
Block result = a;
while (! (result == null || result == b || b.IsChildTo(result)))
result = result.Parent;
return result;
}
public bool IsChildTo(Block block)
{
return (Parent == block) || (Parent != null ? Parent.IsChildTo(block) : false);
}
protected Node(int nextCount)
{
parent = null;
options = new OptionsHash();
prevArray = new NodeArray();
prevIndexes = new ArrayList();
nextArray = new NextNodeArray(this,nextCount);
}
protected internal virtual void setParent(Block parent)
{
if (this.parent != null)
this.parent.removeChild(this);
this.parent = parent;
if (parent != null)
parent.addChild(this);
}
protected internal override void setParent(Block parent)
{
if (parent == null)
ResetNextArray(0);
else if (! (parent is MethodBodyBlock) && ! (parent is FinallyBlock) &&
! (parent is FilterBlock))
ResetNextArray(1);
base.setParent(parent);
}
protected internal override void setParent(Block parent)
{
base.setParent(parent);
setVarByIndex();
}
public DummyNode(Block parent)
: base()
{
this.setParent(parent);
}
protected void SiftBlocks(Block node, object data)
{
BasicBlock basicBlock = data as BasicBlock;
basicBlock.AddNode(node);
if (node is ProtectedBlock)
{
foreach (EHBlock block in (node as ProtectedBlock))
{
if (block.Options.ContainsOption(BasicBlock.BASIC_BLOCK_OPTION))
basicBlock.AddLink(block.Options[BasicBlock.BASIC_BLOCK_OPTION] as BasicBlock);
else
{
BasicBlock newBlock = createBasicBlock();
basicBlock.AddLink(newBlock);
AddTask(block,newBlock);
}
}
}
else if (node is UserFilteredBlock)
{
FilterBlock block = (node as UserFilteredBlock).Filter;
if (block.Options.ContainsOption(BasicBlock.BASIC_BLOCK_OPTION))
basicBlock.AddLink(block.Options[BasicBlock.BASIC_BLOCK_OPTION] as BasicBlock);
else
{
BasicBlock newBlock = createBasicBlock();
basicBlock.AddLink(newBlock);
AddTask(block,newBlock);
}
}
if (node.Next.Options.ContainsOption(BasicBlock.BASIC_BLOCK_OPTION))
basicBlock.AddNextBasicBlock(node.Next.Options[BasicBlock.BASIC_BLOCK_OPTION] as BasicBlock);
else
{
BasicBlock nextBlock = createBasicBlock();
basicBlock.AddNextBasicBlock(nextBlock);
AddTask(node.Next,nextBlock);
}
}
protected internal override void VisitProtectedBlock(ProtectedBlock node, object data)
{
generator.BeginExceptionBlock();
currentBlock = node;
tasks.Suspend();
AddTask(node.Next,null);
}
protected internal override void VisitMethodBodyBlock(MethodBodyBlock node, object data)
{
currentBlock = node;
AddTask(node.Next,null);
}
protected internal override void VisitFinallyBlock(FinallyBlock node, object data)
{
generator.BeginFinallyBlock();
currentBlock = node;
tasks.Suspend();
AddTask(node.Next,null);
}
protected internal override void VisitCatchBlock(CatchBlock node, object data)
{
generator.BeginCatchBlock(node.Type);
currentBlock = node;
tasks.Suspend();
AddTask(node.Next,null);
}
internal void OnResume()
{
if(currentBlock is ProtectedBlock)
{
ProtectedBlock node = currentBlock as ProtectedBlock;
for(int i = node.Count - 1; i>=0; i--)
AddTask(node[i],null);
}
else if(currentBlock is EHBlock)
{
EHBlock block = currentBlock as EHBlock;
if(block.TryBlock[block.TryBlock.Count - 1] == block)
{ // The last handler
generator.EndExceptionBlock();
tasks.TryResume();
}
}
else
throw new EmissionException();
currentBlock = currentBlock.Parent;
}