Op 5-3-2013 19:25, Sean Callanan schreef:
Carlo,
you can see an example of ClangFunctions at work in
AppleObjCRuntime::GetObjectDescription, although it doesn’t provide a
good example of the following wrinkle:
If you make a value object with your string, the string value will not
be in target memory and calling the function will result in a crash.
You need to manually call Process::AllocateMemory and put your string in
there, and then create a value with type char* containing the pointer to
your string.
As Greg says, though, if you are trying to do run ClangFunctions
piecemeal to replicate the action of an expression, then you are not
going to win vs. just parsing the expression and running it.
Thanks for the helpful comments (both of you). For this particular
expression I wanted to get the 'name' property on an NSException so I
can show both the Name and class for an exception message in the IDE,
which works now:
https://dl.dropbox.com/u/29927944/ShareX/2013-03/2013-03-05_19-39-40.png
I call the sel_registerName with allocateMemory to get a selector, cache
the selector name (per process), releasememroy to release that, and
after that just call msgSend. As Greg said there's no convenient
"ClangJITCode" class yet I can use for this.
for the "Watches" support though, I don't think there is a good way to
do it yet, except maybe converting the Pascal input to Objc on the fly
and calling evaluate expression api. I can't require my users to enter
watches in with a c syntax.
Thanks,
--
Carlo Kok
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