| public InitImplementation ( object implementation ) : void | ||
| implementation | object | |
| return | void | |
private static NativeContinuation CaptureContinuation(Context cx, Interpreter.CallFrame frame, bool requireContinuationsTopFrame)
{
NativeContinuation c = new NativeContinuation();
ScriptRuntime.SetObjectProtoAndParent(c, ScriptRuntime.GetTopCallScope(cx));
// Make sure that all frames are frozen
Interpreter.CallFrame x = frame;
Interpreter.CallFrame outermost = frame;
while (x != null && !x.frozen)
{
x.frozen = true;
// Allow to GC unused stack space
for (int i = x.savedStackTop + 1; i != x.stack.Length; ++i)
{
// Allow to GC unused stack space
x.stack[i] = null;
x.stackAttributes[i] = ScriptableObject.EMPTY;
}
if (x.savedCallOp == Token.CALL)
{
// the call will always overwrite the stack top with the result
x.stack[x.savedStackTop] = null;
}
else
{
if (x.savedCallOp != Token.NEW)
{
Kit.CodeBug();
}
}
// the new operator uses stack top to store the constructed
// object so it shall not be cleared: see comments in
// setCallResult
outermost = x;
x = x.parentFrame;
}
if (requireContinuationsTopFrame)
{
while (outermost.parentFrame != null)
{
outermost = outermost.parentFrame;
}
if (!outermost.isContinuationsTopFrame)
{
throw new InvalidOperationException("Cannot capture continuation " + "from JavaScript code not called directly by " + "executeScriptWithContinuations or " + "callFunctionWithContinuations");
}
}
c.InitImplementation(frame);
return c;
}
