[lldb-dev] Python API: Evaluating commands with specified language

[Jason Molenda]

This change was around June 2014, it is included in Xcode 6 which was released around September 2014.  The API won't exist in Xcode 5 installations, but I don't think that's a large number of users.

Yeah we need to figure out how to regenerate the on-line API documentation, I don't know exactly how Dan generated it.  It's about a year and a half old at this point.

> On Dec 25, 2014, at 11:33 PM, Michail Pishchagin <mblsha at gmail.com> wrote:
> 
> Thanks, it works!
> 
> And I'm trying to get language based on current frame — it seems that SBCompileUnit.GetLanguage() was added very recently in r222189. Will it be added to the Xcode 6 updates?
> 
> P.S. Python API reference (http://lldb.llvm.org/python_reference/) is badly outdated — it says that it was generated back in 2013, and it looks that I have to rely on SB* headers in lldb repository to get up-to-date info.
> 
>> On 26 дек. 2014 г., at 1:28, Jason Molenda <jason at molenda.com> wrote:
>> 
>> Hi Michail, 
>> 
>> Try the SBFrame::EvaluteExpression(const char *expr, const SBExpressionOptions &options) method where you've specified the language in the SBExpressionOptions object.
>> 
>> J
>> 
>>> On Dec 24, 2014, at 12:11 AM, Michail Pishchagin <mblsha at gmail.com> wrote:
>>> 
>>> Hi!
>>> 
>>> I've been trying to get https://github.com/facebook/chisel to work on Swift targets, and so far noticed one issue: while I'm stopped inside Swift code, all SBFrame.EvaluateExpression() calls are evaluated as if they're in Swift, not in Objective-C (this is what Chisel expects).
>>> 
>>> It's very easy to reproduce the issue using just default prompt:
>>> 
>>> (lldb) e (id)objc_getClass("NSClipView")
>>> error: <EXPR>:1:5: error: consecutive statements on a line must be separated by ';'
>>> (id)objc_getClass("NSClipView")
>>>  ^
>>>  ;
>>> 
>>> (lldb) script
>>> Python Interactive Interpreter. To exit, type 'quit()', 'exit()'.
>>>>>> value = lldb.frame.EvaluateExpression('(id)objc_getClass("NSClipView")')
>>>>>> str(value.GetError())
>>> 'error: <EXPR>:1:5: error: consecutive statements on a line must be separated by \';\'\n(id)objc_getClass("NSClipView")\n    ^\n    ;'
>>> 
>>> (lldb) e -l objective-c++ -- (id)objc_getClass("NSClipView")
>>> (id) $1 = 0x00007fff7c259440
>>> 
>>> I've looked at LLDB Python API (http://lldb.llvm.org/python_reference/), and was unable to find a way to explicitly specify a language using EvaluateExpression call. Is there a way to do so?
>>> 
>>> -Michail
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>> 
>