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#1259 — state of generator after error thrown

• bug_id: 1259
• creation_ts: 2013-02-28 08:53:00 -0800
• short_desc: state of generator after error thrown
• delta_ts: 2013-10-10 12:52:42 -0700
• product: Draft for 6th Edition
• component: technical issue
• version: All
• rep_platform: All
• op_sys: All
• bug_status: RESOLVED
• resolution: FIXED
• priority: Normal
• bug_severity: enhancement
• everconfirmed: true
• reporter: Andy Wingo
• assigned_to: Allen Wirfs-Brock

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• commentid: 3255
• comment_count: 0
• who: Andy Wingo
• bug_when: 2013-02-28 08:53:53 -0800

Hi,

I realize the generator language hasn't landed yet in the spec, but if we take this as a reference:

http://wiki.ecmascript.org/doku.php?id=harmony:generators

I think perhaps the interaction between exceptions and generator state is not quite clear.

Specifically: if a generator throws an uncaught exception, what is its state?

If a generator throws a StopIteration explicitly, what is its state?

As it is, harmony:generators suggests that the generator would be left in the "executing" state in both cases. This is OK but it might merit a clarification.

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• commentid: 5889
• comment_count: 1
• who: Allen Wirfs-Brock
• bug_when: 2013-10-10 12:52:42 -0700

this is now convered by the actual spec. language. See section 25.3.3