<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;" class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Aug 6, 2015, at 4:17 PM, Siva Chandra <<a href="mailto:sivachandra@google.com" class="">sivachandra@google.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><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; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><div class="gmail_quote" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; 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;">On Thu, Aug 6, 2015 at 3:58 PM, Enrico Granata<span class="Apple-converted-space"> </span><span dir="ltr" class=""><<a href="mailto:egranata@apple.com" target="_blank" class="">egranata@apple.com</a>></span><span class="Apple-converted-space"> </span>wrote:<br class=""><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;" class=""><br class=""><div class=""><span class=""><blockquote type="cite" class=""><div class="">On Aug 6, 2015, at 3:50 PM, Siva Chandra <<a href="mailto:sivachandra@google.com" target="_blank" class="">sivachandra@google.com</a>> wrote:</div><br class=""><div class=""><br class=""><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;" class=""><div class="gmail_quote" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px;">On Thu, Aug 6, 2015 at 3:38 PM, Enrico Granata<span class=""> </span><span dir="ltr" class=""><<a href="mailto:egranata@apple.com" target="_blank" class="">egranata@apple.com</a>></span><span class=""> </span>wrote:<br class=""><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;" class=""><br class=""><div class=""><span class=""><blockquote type="cite" class=""><div class="">On Aug 6, 2015, at 3:33 PM, Siva Chandra <<a href="mailto:sivachandra@google.com" target="_blank" class="">sivachandra@google.com</a>> wrote:</div><br class=""><div class=""><div dir="ltr" class=""><br class=""><div class="gmail_extra"><br class=""><div class="gmail_quote">On Thu, Aug 6, 2015 at 2:43 PM, Enrico Granata<span class=""> </span><span dir="ltr" class=""><<a href="mailto:egranata@apple.com" target="_blank" class="">egranata@apple.com</a>></span><span class=""> </span>wrote:<br class=""><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;" class=""><div class="">To be honest, my favorite approach would be to modify clang’s TypePrinter to do this, and then hooking up GetDisplayTypeName() to use whatever flags would be necessary to invoke that bit of magic</div></div></blockquote><div class=""><br class=""></div><div class="">Do you mean that clang's "pretty printer" should be made extensible by a script?</div><div class=""> </div></div></div></div></div></blockquote><div class=""><br class=""></div></span><div class="">Nope, what I am imagining is not an extensible system</div><div class=""><br class=""></div><div class="">When LLDB goes to print a type it asks the compiler “what is the name of this type that I should display?”</div><div class="">By default, clang prints the fully specialized template, including type arguments that have their default value. My theory is that we would want to add a mode to the type printer to say “simplify type name”, and that would do sensible things to get a display name that is more compact</div></div></div></blockquote><div class=""><br class=""></div><div class="">So, how would clang know about the "simplified" or "friendly" name for a type? Even in case of standard library types, the underlying types (with unfriendly type names) could be anything. For example, libstdc++ and STLport have different underlying naming conventions. So does libc++ I would imagine (I have not spent enough time yet staring at libc++ code).</div><div class=""><br class=""></div></div></div></blockquote><div class=""><br class=""></div></span><div class="">The obvious mechanism is that the compiler has knowledge of the structure of the type - so it can make printing decisions based on that type structure</div><div class="">In this case, I imagine a viable approach would be having rules like omitting the values of template arguments that have a default value, omit inlined namespaces, ...</div></div></div></blockquote><div class=""><br class=""></div><div class="">OK. I will be on vacation next week. Will give this idea a shot after getting back. </div></div></div></blockquote></div><div class=""><br class=""></div>Awesome! Looking very much forward to that!<br class=""><div class="">
<div class="" style="color: rgb(0, 0, 0); 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 class="Apple-interchange-newline">Thanks,</div><div class="" style="color: rgb(0, 0, 0); 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;"><i class="">- Enrico</i><br class="">📩 egranata@<font color="#ff2600" class=""></font>.com ☎️ 27683</div>
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