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Debugger: Difference between revisions
→Accessor Properties of the Debugger.Frame Prototype Object: If onPop returns "undefined", throwing and termination proceed undisturbed.
m (→Function Properties of the Debugger.Script Prototype Object: Correct omission in Debugger.Script.prototype.clearAllBreakpoints description.) |
(→Accessor Properties of the Debugger.Frame Prototype Object: If onPop returns "undefined", throwing and termination proceed undisturbed.) |
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Calls to frames' <code>onPop</code> handlers are cross-compartment, intra-thread calls: an <code>onPop</code> function must be in the debugger's compartment (and thus calls to it take place in the debugger's compartment), and the call takes place in the thread to which the frame belongs. | Calls to frames' <code>onPop</code> handlers are cross-compartment, intra-thread calls: an <code>onPop</code> function must be in the debugger's compartment (and thus calls to it take place in the debugger's compartment), and the call takes place in the thread to which the frame belongs. | ||
When SpiderMonkey calls an <code>onPop</code> handler for a frame that is throwing an exception or being terminated, and the handler returns <code>undefined</code>, then SpiderMonkey proceeds with the exception or termination. The <code>undefined</code> resumption value leaves the throwing and termination process undisturbed. | |||
When a debugger handler method forces a frame to complete early, by returning a <code>{ return:... }</code>, <code>{ throw:... }</code>, or <code>null</code> resumption value, SpiderMonkey calls the frame's <code>onPop</code> handler, if any. The completion value passed in this case reflects the resumption value that caused the frame to complete. | When a debugger handler method forces a frame to complete early, by returning a <code>{ return:... }</code>, <code>{ throw:... }</code>, or <code>null</code> resumption value, SpiderMonkey calls the frame's <code>onPop</code> handler, if any. The completion value passed in this case reflects the resumption value that caused the frame to complete. | ||