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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2689/">https://reviewboard.asterisk.org/r/2689/</a>
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<p style="margin-top: 0;">On July 22nd, 2013, 6:29 a.m. UTC, <b>Tilghman Lesher</b> wrote:</p>
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<a href="https://reviewboard.asterisk.org/r/2689/diff/1/?file=42376#file42376line158" style="color: black; font-weight: bold; text-decoration: underline;">/trunk/apps/app_stack.c</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">ASTERISK_FILE_VERSION(__FILE__, "$Revision$")</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><application name="StackPopGoto" language="en_US"></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><synopsis></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>Remove one address from gosub stack and performs a Goto</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span></synopsis></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><syntax></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><parameter name="context" /></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span></syntax></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><description></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span><para>Executes a StackPop followed by Goto. This allows the Goto destination</span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><span class="tb"> </span>to be loaded from a LOCAL variable that is being discarded.</para></span></pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "><span class="cm"><span class="tb"> </span><span class="tb"> </span><see-also></span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">While I understand this as a possible exercise for the author to understand the API, combining two applications does not sound like a good precedent we want to set.
We could also write PlaybackGoto, PlaybackHangup, PlaybackGosub, and various other combinations of two applications, when it would clearly be better simply to invoke those applications separately.</pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">My impression based on the description is that combining the two applications in this way has a little added benefit.
> This allows the Goto destination to be loaded from a LOCAL variable that is being discarded.
So this is apparently to close out a stack operation while setting the return destination while still being able to use local variables that will fall out of stack. I mean, it's not like you couldn't just store those variables in a non-local manner after returning, but this still makes more sense than any of the proposed Playback operations you mentioned because those aren't going to affect the scope.</pre>
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<p>- jrose</p>
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<p>On July 22nd, 2013, 2:41 a.m. UTC, Matt Jordan wrote:</p>
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<div>Review request for Asterisk Developers and Corey Farrell.</div>
<div>By Matt Jordan.</div>
<p style="color: grey;"><i>Updated July 22, 2013, 2:41 a.m.</i></p>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-21390">ASTERISK-21390</a>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
Asterisk
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This adds to new stack-related applications to Asterisk - GosubEntry and StackPopGoto.
GosubEntry allows the dialplan to modify the LOCAL variable values while in a Gosub stack frame.
StackPopGoto lets you pop off the next stack frame and immediately goto that location. Using the GosubEntry application, you can modify a LOCAL channel variable on the current stack frame and use it as input to this application.
{note}
This patch was written by Corey Farrell - see ASTERISK-21390. I tweaked it slightly for coding guidelines and formatting.
{note}
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>/trunk/CHANGES <span style="color: grey">(394981)</span></li>
<li>/trunk/apps/app_stack.c <span style="color: grey">(394981)</span></li>
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<p><a href="https://reviewboard.asterisk.org/r/2689/diff/" style="margin-left: 3em;">View Diff</a></p>
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