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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link="#0563C1" vlink="#954F72" style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt'>Hello all,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt'>I have a large project which consists of several millions of C++ code. Now I want to add a log function to each line of code. If do it manually, it’s almost impossible.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt'>Suppose my original code is like this:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:blue'>void</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:blue'>snapshot_handler</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>::</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#880000'>mouseMoveEvent</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>(</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:blue'>IDocView</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>* </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:navy'>pDocView</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>, </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:blue'>QMouseEvent</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> * </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:gray'>event</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>{<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:navy'>pDocView</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>-></span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#880000'>getViewPortWidget</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>()-></span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#880000'>setCursor</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>(</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:blue'>Qt</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>::</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#A000A0'>CrossCursor</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:navy'>m_ptEnd</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:teal'>=</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:gray'>event</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>-></span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#880000'>pos</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:navy'>pDocView</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>-></span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#880000'>updateView</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>();<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>}<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>I want to log each line of code and the function:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:blue'>void</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:blue'>snapshot_handler</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>::</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#880000'>mouseMoveEvent</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>(</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:blue'>IDocView</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>* </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:navy'>pDocView</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>, </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:blue'>QMouseEvent</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> * </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:gray'>event</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>)<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>{<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> Log << “</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#880000'>mouseMoveEvent;</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'><o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> Log << </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:navy'>pDocView</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>-></span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#880000'>getViewPortWidget</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>()-></span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#880000'>setCursor</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>(</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:blue'>Qt</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>::</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#A000A0'>CrossCursor</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>);<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> Log << </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:navy'>m_ptEnd</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:teal'>=</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:gray'>event</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>-></span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#880000'>pos</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> Log << </span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:navy'>pDocView</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>-></span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:#880000'>updateView</span><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>();<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'> Log << “elapsed time in seconds”;<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:9.5pt;font-family:Consolas;color:black'>}<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt'>Can Clang support doing this? If so, how can achieve such requirements?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt'>Best regards<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt'>Yonggang Chen<o:p></o:p></span></p></div></body></html>