Review Request 123963: First bits of refactorings. Skeleton of interface for KDevelop. Build system. CompilationDatabase for CMake projects and ClangTool.

[Milian Wolff]

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refactoring/CMakeLists.txt (line 18)
<https://git.reviewboard.kde.org/r/123963/#comment55834>

    this should not be required. We enable c++11 globally. Do not depend on C++14.



refactoring/CMakeLists.txt (line 31)
<https://git.reviewboard.kde.org/r/123963/#comment55835>

    maybe instead compile-in the debug files instead of linking against it?



refactoring/DocumentCache.h (line 42)
<https://git.reviewboard.kde.org/r/123963/#comment55836>

    again: here and below: do not take by rvalue, just take a plain value



refactoring/DocumentCache.h (line 54)
<https://git.reviewboard.kde.org/r/123963/#comment55839>

    why store it in pointers?
    
    also: style, prefix members with `m_`, not just `_`.



refactoring/DocumentCache.cpp (line 67)
<https://git.reviewboard.kde.org/r/123963/#comment55840>

    this is the only place where you need the std::strings, right? Maybe use QByteArray before and only convert to std::string here on-demand. that simplifies the rest of the code thanks to implicit sharing, and you could simply use a QHash<QByteArray, QByteArray> for the map.



refactoring/utils.cpp (line 32)
<https://git.reviewboard.kde.org/r/123963/#comment55845>

    here and below: style: put the { of a function on its own line
    
        void foo
        {
            ...
        }



refactoring/utils.cpp (line 76)
<https://git.reviewboard.kde.org/r/123963/#comment55844>

    add a Q_ASSERT(offset + length < text.size());



refactoring/utils.cpp (line 82)
<https://git.reviewboard.kde.org/r/123963/#comment55846>

    style:
    
        auto shift = [&text, &lastLine, &lastColumn, eolMarker]
                     (unsigned start, unsigned length)
        {
            ....
        };



refactoring/utils.cpp (line 121)
<https://git.reviewboard.kde.org/r/123963/#comment55841>

    remove



refactoring/utils.cpp (line 124)
<https://git.reviewboard.kde.org/r/123963/#comment55842>

    they are not scary, but not used by us.



refactoring/utils.cpp (line 141)
<https://git.reviewboard.kde.org/r/123963/#comment55843>

    you are `using namespace KDevelop`, remove it here and below


- Milian Wolff


On June 14, 2015, 7:24 p.m., Maciej Poleski wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/123963/
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> 
> (Updated June 14, 2015, 7:24 p.m.)
> 
> 
> Review request for KDevelop.
> 
> 
> Repository: kdev-clang
> 
> 
> Description
> -------
> 
> First bits of refactorings.
> Skeleton of interface for KDevelop.
> Build system (really nasty, linked DSO has 18MiB).
> CompilationDatabase for CMake projects and ClangTool (with cache, but without cache updates).
> Interface is not frozen for now.
> 
> Currently building of refactorings is enabled only if Clang 3.6.x is found. In other case build system behaves exactly as current master.
> 
> Refactorings require some contextual informations about projects. I made draft of interface with should feature:
>  - Stable ABI - dlopen (or equivalent) a DSO and if succeed (binary is still compatible with Clang libraries ABI), dlsym (or equivalent) some functions which are to provide all refactorings features
>  - Prototypes (with some implementation) of functions constituting API between KDevelop and refactorings backend
>  - It may be considered to use Qt plugin system to provide implementation of this (or equivalent) interface. This would be more expensive, but also more portable
>  - In worst case this library (static version) can be used with additional driver to make stand-alone executable providing all refactorings features (but it would require additional marshaling and hamper cooperation with user (how to provide UI in such a case?))
> 
> Handling dependencies between Clang/LLVM libraries is a nightmare. I extended FindClang.cmake to find much more libraries and used them to link with first pieces of my code. This is huge, requires additional libraries like zlib and even ordering of dependencies can cause linker errors.
> 
> Interface is not finished
> 
> 
> Diffs
> -----
> 
>   CMakeLists.txt 875172a8407f4bd9faf330f032a280fa66c2b16f 
>   cmake/FindClang.cmake 6c9bd6ef0242319122dcc7e6fd6cea8d9f0cbfbb 
>   refactoring/CMakeLists.txt PRE-CREATION 
>   refactoring/DocumentCache.h PRE-CREATION 
>   refactoring/DocumentCache.cpp PRE-CREATION 
>   refactoring/interface.h PRE-CREATION 
>   refactoring/interface.cpp PRE-CREATION 
>   refactoring/utils.h PRE-CREATION 
>   refactoring/utils.cpp PRE-CREATION 
> 
> Diff: https://git.reviewboard.kde.org/r/123963/diff/
> 
> 
> Testing
> -------
> 
> Compiles on my Gentoo system. It makes sense to build this only on system with Clang 3.6.
> 
> 
> Thanks,
> 
> Maciej Poleski
> 
>

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