clang-format：将指针声明的星号（*）与变量名称对齐 [英] clang-format: Align asterisk (*) of pointer declaration with variable name

问题描述

我在 .clang-format 文件中使用以下选项：

  AlignConsecutive注释：true 
 PointerAlignment：Right 
  

当前格式化结果如下：

  char * var1; 
 SomeOtherType * var2; 
 int var3; 
  

我预期的结果是：

  char * var1; //注意* 
的改变位置SomeOtherType * var2; 
 int var3; 
  

如何配置 clang-format 使用 AlignConsecutiveDeclarations 选项，将asterix（*）与变量名称对齐，而与
类型匹配？

p>请参见 https：// github。 com / llvm-mirror / clang / blob / release_39 / lib / Format / WhitespaceManager.cpp＃L327-L340

  void WhitespaceManager :: alignConsecutiveDeclarations（）{
 if（！Style.AlignConsecutiveDeclarations）
 return; 
 
 // FIXME：目前我们不能正确处理PointerAlignment：Right 
 // *和&没有对齐并且留下悬空。需要做的事情
 //它，但它提出了一致的代码的问题，如：
 // const char * const * v1; 
 // float const * v2; 
 // SomeVeryLongType const& v3; 
 
 AlignTokens（Style，[]（Change const& C）{return C.IsStartOfDeclName;}，
 Changes）; 
} 
  

I am using the following options in my .clang-format file:

AlignConsecutiveDeclarations: true
PointerAlignment: Right

The current formatting result is the following:

char *         var1;
SomeOtherType *var2;
int            var3;

The result I was expecting would be:

char          *var1; //note the changed position of * 
SomeOtherType *var2;
int            var3;

How can I configure clang-format to align the asterix (*) with the variable name rather then with the type when I am using the AlignConsecutiveDeclarations option?

解决方案

PointerAlignment: Right is unfortunately not implemented yet.

See https://github.com/llvm-mirror/clang/blob/release_39/lib/Format/WhitespaceManager.cpp#L327-L340

void WhitespaceManager::alignConsecutiveDeclarations() {
  if (!Style.AlignConsecutiveDeclarations)
    return;

  // FIXME: Currently we don't handle properly the PointerAlignment: Right
  // The * and & are not aligned and are left dangling. Something has to be done
  // about it, but it raises the question of alignment of code like:
  //   const char* const* v1;
  //   float const* v2;
  //   SomeVeryLongType const& v3;

  AlignTokens(Style, [](Change const &C) { return C.IsStartOfDeclName; },
              Changes);
}

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