public TryBlockInfo(int handlerOffset, VariableScope scope, TryBlockInfo outerBlock)
{
Contract.Requires(handlerOffset > 0);
Contract.Requires(scope != null);
HandlerOffset = handlerOffset;
Scope = scope;
OuterBlock = outerBlock;
}
internal void LeaveTry()
{
if (_currentTryBlock == null)
{
throw new IllegalOpCodeException(OpCode.LeaveTry.ToString());
}
_currentTryBlock = _currentTryBlock.OuterBlock;
CodeReader.Seek(CodeReader.ReadInteger());
}
internal bool TryHandle(ExceptionObject exception)
{
Contract.Requires(exception != null);
if (_currentTryBlock == null)
{
return(false);
}
LocalScope = _currentTryBlock.Scope;
CodeReader.Seek(_currentTryBlock.HandlerOffset);
_currentTryBlock = _currentTryBlock.OuterBlock;
_evalStack.Push(exception.ThrownValue);
_evalStack.Push((JSNumberValue)1);
return(true);
}
internal void EnterTry()
{
_currentTryBlock = new TryBlockInfo(CodeReader.ReadInteger(), LocalScope, _currentTryBlock);
}