<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><br><div><div>On Apr 8, 2014, at 1:24 PM, Eran Ifrah <<a href="mailto:eran.ifrah@gmail.com">eran.ifrah@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><br class="Apple-interchange-newline"><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div class="gmail_quote" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">On Tue, Apr 8, 2014 at 10:55 PM, Enrico Granata<span class="Apple-converted-space"> </span><span dir="ltr"><<a href="mailto:egranata@apple.com" target="_blank">egranata@apple.com</a>></span><span class="Apple-converted-space"> </span>wrote:<br><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div style="word-wrap: break-word;"><div class="">On Apr 8, 2014, at 12:35 PM, Eran Ifrah <<a href="mailto:eran.ifrah@gmail.com" target="_blank">eran.ifrah@gmail.com</a>> wrote:<br></div><div><div class=""><br><blockquote type="cite"><div dir="ltr"><div style="font-family: verdana, sans-serif; font-size: small;">Thanks for the tip. It works fine for 'string' types</div><div style="font-family: verdana, sans-serif; font-size: small;">But for simple types (e.g. 'int') GetSummary() returns an empty string.. :/</div><div style="font-family: verdana, sans-serif; font-size: small;"><br></div><div style="font-family: verdana, sans-serif; font-size: small;">So I ended up writing this little method:</div><div style="font-family: verdana, sans-serif; font-size: small;"><a href="http://pastebin.com/pj0znv9j" target="_blank">http://pastebin.com/pj0znv9j</a><br></div></div></blockquote><div><br></div></div><div>IIUC your logic, you’re saying - for pointers to “char-like things”, get the summary, for anything else just get the value</div><div>That doesn’t seem right. You are going to hide the summary for classes and structs doing this, and not get anything to display since these don’t have a value</div><div><br></div><div>Why are you trying to coalesce value and summary instead of keeping them as two separate notions and then making print-time decisions?</div><div>In the LLDB source, there is a ValueObjectPrinter.cpp which implements the printing that you see with the frame variable command, for instance</div><div>That might be a useful starting point for you to look at if you’re aiming to provide “smart” printouts of data</div><div><div class="h5"><br></div></div></div></div></blockquote><div class="gmail_default" style="font-family: verdana, sans-serif; font-size: small;">The reason I did this, was that GetSummary() returns empty string in all cases except for strings, so this was an attempt to merge both columns into a single column ("Value")</div><div class="gmail_default" style="font-family: verdana, sans-serif; font-size: small;"><br></div><div class="gmail_default" style="font-family: verdana, sans-serif; font-size: small;">For testing purposes, I updated my UI to include 2 separate columns "Summary" and "Value” </div></div></blockquote><div><br></div><div><br></div><div>I think this might actually be a sensible choice if you want to keep your logic simple :-)</div><br><blockquote type="cite"><div class="gmail_quote" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div class="gmail_default" style="font-family: verdana, sans-serif; font-size: small;">As you can see in the attached screenshot, the "Summary" is always empty, except for 'string' types</div><div class="gmail_default" style="font-family: verdana, sans-serif; font-size: small;">( I don't see any summary for classes and structs )</div></div></blockquote><div><br></div><div>That is because we don’t have builtin formatters for wx types - and you didn’t define any</div><div><br></div><div>It seems like it would be easy to, for instance, say <font face="Menlo"><span style="font-size: 11px;">type summary add -s “${var.m_impl}” “wxString”</span></font> - and then wxString itself will have a summary</div><div><br></div><div>Since you’re using LLDB, your users could also define their own formatters and the debugger will pick them up - it would be nice if your UI made it possible for them to do so.</div><div><br></div><div>If you want your UI to be smart, you can use the SB API to for instance check if something has a summary, and ask that summary if a value should be shown, children should be shown, .. and then take it from there</div><div><br></div><blockquote type="cite"><div class="gmail_quote" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div class="gmail_default" style="font-family: verdana, sans-serif; font-size: small;"><br></div><div class="gmail_default"><font face="verdana, sans-serif"><a href="http://codelite.org/images/empty-summary.png">http://codelite.org/images/empty-summary.png</a></font><br></div><div class="gmail_default"><font face="verdana, sans-serif"><br></font></div><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;"><div style="word-wrap: break-word;"><div><div class="h5"><blockquote type="cite"><div dir="ltr"><div><font face="verdana, sans-serif"><br></font></div><div><font face="verdana, sans-serif">Which seems to work fine for me (ofcourse, I will know more when I upload the pre-release to my testers)</font></div><div><font face="verdana, sans-serif"><br></font></div><div><font face="verdana, sans-serif">Thanks</font></div><div><font face="verdana, sans-serif"><br></font></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Apr 8, 2014 at 9:04 PM,<span class="Apple-converted-space"> </span><span class="Apple-converted-space"> </span><span dir="ltr"><<a href="mailto:jingham@apple.com" target="_blank">jingham@apple.com</a>></span><span class="Apple-converted-space"> </span>wrote:<br><blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left-width: 1px; border-left-color: rgb(204, 204, 204); border-left-style: solid; padding-left: 1ex;">That is what the Summary is for. The Summary, if it exists, is the preferred "interpreted" presentation of the data held by the SBValue. So for a char *, the Value is the pointer value, but the Summary is the c-string contents.<br><br>Jim<br><div><br>On Apr 8, 2014, at 10:57 AM, Eran Ifrah <<a href="mailto:eran.ifrah@gmail.com" target="_blank">eran.ifrah@gmail.com</a>> wrote:<br><br>> Hello Enrico / All,<br>><br>> I debugged it and it seems like a bug in my code.<br>> To get the frame locals (function args and locals) I was using this call:<br>><br>> frame.GetBlock().GetVariables()<br>><br>> While I should have simply call to frame.GetVariables()<br>> Which fixes the problem.<br>><br>> However, I am facing another issue:<br>> It seems like the function "const char* SBValue::GetValue()" returns the pointer address as string instead of the actual content<br>><br>> Any quick way to get the data as an actual c-str?<br>><br>> For example:<br>><br>> int main(int argc, char** argv) {<br>> return 0;<br>> }<br>><br>> My lldb UI for the "locals" view looks like this (best viewed in monospace font ;)) :<br>><br>> --------------------------------------------------------------------------------<br>> name | type | value<br>> --------------------------------------------------------------------------------<br>> argc | int | 1<br>> argv | const char** | 0xfffffab123 (some random address)<br>> | | |<br>> +-*argv | const char* | 0xfffffab124 (some other address)<br>> | | |<br>> +- **argv| char | '/'<br>><br>> In the code, I can identify that *argv is of type lldb::eBasicType*Char, however, I can't find a way to extract the string itself (it should be "/home/eran/test/TestLLDB")<br>><br>> Any hints?<br>><br>> Thanks!<br>><br>><br>><br>><br>> On Mon, Apr 7, 2014 at 5:31 AM, Eran Ifrah <<a href="mailto:eran.ifrah@gmail.com" target="_blank">eran.ifrah@gmail.com</a>> wrote:<br>> Thanks, will debug this and see where it fails<br>><br>> Eran<br>><br>><br>> On Mon, Apr 7, 2014 at 1:43 AM, Enrico Granata <<a href="mailto:egranata@apple.com" target="_blank">egranata@apple.com</a>> wrote:<br>> Yeah the const char* definitely should have a value.<br>> I am guessing the variable is in scope all right. Does it have a summary if you ask for that?<br>> Does the same API call work if you stop directly within LLDB and use the Python API?<br>> More context (e.g. a repro case) would also help - or maybe if you can step through the LLDB code and see where we fail. If these are just frame locals I expect the relevant code to be in ValueObject.cpp GetValueAsCString<br>><br>> Sent from the iPhone of<br>> Enrico Granata <egranata@🍎.com><br>><br>> On Apr 6, 2014, at 12:26 PM, Eran Ifrah <<a href="mailto:eran.ifrah@gmail.com" target="_blank">eran.ifrah@gmail.com</a>> wrote:<br>><br>>> One of the local variables was 'const char*' so I would expect it to have a value and others were of type of 'wxString'<br>>> In the UI I expanded all the way to the _M_data which is of type 'wchar_t*' - and still nothing<br>>><br>>> Eran<br>>><br>>><br>>><br>>> On Sun, Apr 6, 2014 at 9:13 PM, Enrico Granata <<a href="mailto:egranata@apple.com" target="_blank">egranata@apple.com</a>> wrote:<br>>> What is the data type of your variables?<br>>><br>>> If they are aggregate types (structs, classes, ...) they won't have a value.<br>>><br>>> Only basic types (int, float, char, ..., you get the idea - and pointers) have a value.<br>>><br>>> For other types, they might have a summary, or they might have children, but definitely no value.<br>>><br>>> Sent from the iPhone of<br>>> Enrico Granata <egranata@🍎.com><br>>><br>>> On Apr 6, 2014, at 7:02 AM, Eran Ifrah <<a href="mailto:eran.ifrah@gmail.com" target="_blank">eran.ifrah@gmail.com</a>> wrote:<br>>><br>>>> Hello all,<br>>>><br>>>> I am at a phase where I want to display the current frame local variables whenever the debugger "stops"<br>>>> I was able to get a list of the selected frame's variables in the following manner:<br>>>><br>>>> lldb::SBFrame frame = m_target.GetProcess().GetSelectedThread().GetSelectedFrame();<br>>>> ...<br>>>> lldb::SBValueList args = frame.GetBlock().GetVariables(m_target, true, true, false);<br>>>> for(size_t i=0; i<args.GetSize(); ++i) {<br>>>> lldb::SBValue value = args.GetValueAtIndex(i);<br>>>> if ( value.IsValid() ) {<br>>>> LLDBLocalVariable::Ptr_t var( new LLDBLocalVariable(value) );<br>>>> locals.push_back( var );<br>>>> }<br>>>> }<br>>>><br>>>> Now, LLDBLocalVariable is a thin wrapper class for UI purposes.<br>>>> What it does is basically copies values from lldb::SBValue:<br>>>><br>>>> LLDBLocalVariable::LLDBLocalVariable(lldb::SBValue value) {<br>>>> SetName( value.GetName() );<br>>>> SetType( value.GetTypeName() );<br>>>> SetValue( value.GetValue() ); // always returns null<br>>>> ... // code that handles children of value<br>>>> }<br>>>><br>>>> value.GetName() and value.GetTypeName() are working as expected (i.e. I get the correct type name and its name)<br>>>> However, I can't get the value as "string". I was naive enough to think that const char* SBValue::GetValue() will do the trick... but this always returns NULL.<br>>>><br>>>> Any suggestions on what am I doing wrong? an example on how to extract the variable's value in string format will be really appreciated<br>>>><br>>>> Thanks,<br>>>><br>>>> P.S.<br>>>> This is Linux 13.10 / 64 bit<br>>>> Self compiled lldb<br>>>><br>>>> --<br>>>> Eran Ifrah<br>>>> Author of codelite, a cross platform open source C/C++ IDE:<span class="Apple-converted-space"> </span><a href="http://www.codelite.org/" target="_blank">http://www.codelite.org</a><br>>>> wxCrafter, a wxWidgets RAD:<span class="Apple-converted-space"> </span><a href="http://wxcrafter.codelite.org/" target="_blank">http://wxcrafter.codelite.org</a><br>>>> _______________________________________________<br>>>> lldb-dev mailing list<br>>>><span class="Apple-converted-space"> </span><a href="mailto:lldb-dev@cs.uiuc.edu" target="_blank">lldb-dev@cs.uiuc.edu</a><br>>>><span class="Apple-converted-space"> </span><a href="http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev" target="_blank">http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev</a><br>>><br>>><br>>><br>>> --<br>>> Eran Ifrah<br>>> Author of codelite, a cross platform open source C/C++ IDE:<span class="Apple-converted-space"> </span><a href="http://www.codelite.org/" target="_blank">http://www.codelite.org</a><br>>> wxCrafter, a wxWidgets RAD:<span class="Apple-converted-space"> </span><a href="http://wxcrafter.codelite.org/" target="_blank">http://wxcrafter.codelite.org</a><br>><br>><br>><br>> --<br>> Eran Ifrah<br>> Author of codelite, a cross platform open source C/C++ IDE:<span class="Apple-converted-space"> </span><a href="http://www.codelite.org/" target="_blank">http://www.codelite.org</a><br>> wxCrafter, a wxWidgets RAD:<span class="Apple-converted-space"> </span><a href="http://wxcrafter.codelite.org/" target="_blank">http://wxcrafter.codelite.org</a><br>><br>><br>><br>> --<br>> Eran Ifrah<br>> Author of codelite, a cross platform open source C/C++ IDE:<span class="Apple-converted-space"> </span><a href="http://www.codelite.org/" target="_blank">http://www.codelite.org</a><br>> wxCrafter, a wxWidgets RAD:<span class="Apple-converted-space"> </span><a href="http://wxcrafter.codelite.org/" target="_blank">http://wxcrafter.codelite.org</a><br>> _______________________________________________<br>> lldb-dev mailing list<br>><span class="Apple-converted-space"> </span><a href="mailto:lldb-dev@cs.uiuc.edu" target="_blank">lldb-dev@cs.uiuc.edu</a><br>><span class="Apple-converted-space"> </span><a href="http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev" target="_blank">http://lists.cs.uiuc.edu/mailman/listinfo/lldb-dev</a><br><br></div></blockquote></div><br><br clear="all"><div><br></div>--<span class="Apple-converted-space"> </span><br><div dir="ltr">Eran Ifrah<br>Author of codelite, a cross platform open source C/C++ IDE:<span class="Apple-converted-space"> </span><a href="http://www.codelite.org/" target="_blank">http://www.codelite.org</a><br><div>wxCrafter, a wxWidgets RAD: http://<a href="http://wxcrafter.codelite.org/" target="_blank">wxcrafter.codelite.org</a></div></div></div></blockquote></div></div><br><div class=""><div><div style="text-indent: 0px; letter-spacing: normal; text-align: start; text-transform: none; white-space: normal; word-wrap: break-word; word-spacing: 0px;"><div style="text-indent: 0px; letter-spacing: normal; text-align: start; text-transform: none; white-space: normal; word-wrap: break-word; word-spacing: 0px;"><div style="text-indent: 0px; letter-spacing: normal; text-align: start; text-transform: none; white-space: normal; word-wrap: break-word; word-spacing: 0px;"><div style="text-indent: 0px; letter-spacing: normal; text-align: start; text-transform: none; white-space: normal; word-wrap: break-word; word-spacing: 0px;"><div><i>- Enrico</i><br>📩 egranata@<font color="#ff2600"></font>.com ☎️ 27683</div><div><br></div></div></div></div></div><br></div><br></div></div></blockquote></div><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><br clear="all" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><br></div><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;">--<span class="Apple-converted-space"> </span></span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div dir="ltr" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">Eran Ifrah<br>Author of codelite, a cross platform open source C/C++ IDE:<span class="Apple-converted-space"> </span><a href="http://www.codelite.org/" target="_blank">http://www.codelite.org</a><br><div>wxCrafter, a wxWidgets RAD: http://<a href="http://wxcrafter.codelite.org/" target="_blank">wxcrafter.codelite.org</a></div></div></blockquote></div><br><div>
<div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div><i>- Enrico</i><br>📩 egranata@<font color="#ff2600"></font>.com ☎️ 27683</div><div><br></div></div></div></div></div><br class="Apple-interchange-newline">
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