Object wrapper for an Io coroutine.
Now implemented using frame-based evaluation (no platform-specific assembly).backTraceString
Returns a formatted callStack output along with exception info (if any). In case of CGI script, wraps output with <code> tag.
callStack
Returns a list of Call objects.
currentCoroutine
Returns currently running coroutine in Io state.
currentFrame
Returns the current (topmost) EvalFrame of this coroutine,
or nil if no frames are active. Only works for the currently
executing coroutine.
debugWriteln
See Object debugWriteln.
exception
Returns the current exception or nil if there is none.
freeStack
Frees all the internal data from the receiver's stack. Returns self.
handlerStack
The list of resumable exception handler entries for this coroutine, or nil.
ignoredCoroutineMethodNames
List of methods to ignore when building a callStack.
implementation
Returns coroutine implementation type: "frame-based" (portable, no assembly)
inException
Set to true when processing an exception in the coroutine.
ioStack
Returns List of values on this coroutine's stack.
isCurrent
Returns true if the receiver is currently running coroutine.
isYielding
Returns true if the receiver is yielding (not paused or running).
label
A label slot useful for debugging purposes.
main
[Seems to be obsolete!] Executes runMessage, resumes parent coroutine.
parentCoroutine
Returns the parent coroutine this one was chained from or nil if it wasn't chained. When a Coroutine ends, it will attempt to resume its parent.
pause
Removes current coroutine from the yieldingCoros queue and
yields to another coro. System exit is executed if no coros left.
You can resume a coroutine using either resume or resumeLater message.
pauseCurrentAndResumeSelf
Pauses current coroutine and yields to a receiver.
raiseException
Sets exception in the receiver and signals the eval loop to unwind.
rawSignalException
Bridges an Io-level exception to the eval loop by setting errorRaised.
Called by raiseException when there is no parent coroutine to resume.
The exception should already be set on this coroutine via setException.
recentInChain
Returns the coroutine in the coro chain which was most recently run, so you can pause and resume coroutine based constructs like try and actors.
result
The result set when the coroutine ends.
resume
Yields to the receiver. Runs the receiver if it is not running yet.
Returns self.
resumeLater
Promotes receiver to the top of the yieldingCoros queue, but not yielding to it.
When current coroutine yields, receiver will resume.
resumeParentCoroutine
Pauses current coroutine and resumes parent.
run
Runs receiver and returns self.
runLocals
The locals object in whose context the coroutine will send its run message.
runMessage
The message to send to the runTarget when the coroutine starts.
runTarget
The object which the coroutine will send a message to when it starts.
setInException(aBool)
Set the inException status. Returns self.
setLabel(aLabel)
Sets the comment label for the Coro. Return self.
setMessageDebugging(aBoolean)
Turns on message level debugging for this coro. When on, this
coro will send a vmWillSendMessage message to the Debugger object before
each message send and pause itself. See the Debugger object documentation
for more information.
setParentCoroutine(aCoro)
Sets the parent coroutine. Returns self.
setRecentInChain(aCoro)
Sets the most recently run coroutine of the chain.
Sets all the recentInChain in a direct path up to the top of the coro chain
starting at this coro. Returns self.
setStackSize(aNumber)
Sets the stack size in bytes to allocate for new Coros. Returns self.
showStack
Writes backTraceString to STDOUT.
showYielding
Prints a list of yielding coroutines to STDOUT.
stackSize
Stack size allocated for each new coroutine. Coroutines will automatically chain themselves as need if more stack space is required.
typeId
Returns _ string.
yield
Yields to another coroutine in the yieldingCoros queue.
Does nothing if yieldingCoros is empty.