如何使用natvis可视化简单的std :: string？ [英] How to visualise a simple std::string with natvis?
问题描述
调试时，我无法对VS2015中的基本std：string有一个体面的看法。
我按照此地址上给出的说明进行操作：
我想直接将我的变量 str （而不是非常复杂的树）视为测试值）。您能帮我这个忙吗？
我找到了答案，由于一个非常奇怪的原因，我找到了stl.natvis文件在我的VS安装目录中（对我来说， C：\Program Files（x86）\Microsoft Visual Studio 14.0\Common7\Packages\Debugger\Visualizers ）和调试器不会自动识别我添加到项目中的。
所以解决方案是添加另一个调试器可视化文件（.natvis）到我的解决方案中（右键单击->添加新项），并复制/粘贴 stl.natvis 文件到这个新文件。重建后，调试器会适当显示标准std：string。
为完整起见，请参见 stl.natvis 的以下部分，该部分涉及Visual Studio的std :: string
<！-VC 2015->
< Type Name = std :: basic_string& lt; char，*& gt;>
< DisplayString Condition = _ Mypair._Myval2._Myres& lt; _Mypair._Myval2._BUF_SIZE> {_ Mypair._Myval2._Bx._Buf，na}< / DisplayString>
< DisplayString Condition = _ Mypair._Myval2._Myres& gt; = __Mypair._Myval2._BUF_SIZE> {_ Mypair._Myval2._Bx._Ptr，na}< / DisplayString>
< StringView Condition = _ Mypair._Myval2._Myres& lt; _Mypair._Myval2._BUF_SIZE> _Mypair._Myval2._Bx._Buf，na< / StringView>
< StringView Condition = _ Mypair._Myval2._Myres& gt; = __Mypair._Myval2._BUF_SIZE> _Mypair._Myval2._Bx._Ptr，na< / StringView>
< Expand>
< Item Name = [size] ExcludeView = simple> _Mypair._Myval2._Mysize< / Item>
<项目名称= [容量] ExcludeView =简单> _Mypair._Myval2._Myres< / Item>
< Item Name = [allocator] ExcludeView = simple> _Mypair< / Item>
< ArrayItems>
< Size> _Mypair._Myval2._Mysize< / Size>
< ValuePointer Condition = _ Mypair._Myval2._Myres& lt; _Mypair._Myval2._BUF_SIZE> _Mypair._Myval2._Bx._Buf< / ValuePointer>
< ValuePointer Condition = _ Mypair._Myval2._Myres& gt; = __Mypair._Myval2._BUF_SIZE> _Mypair._Myval2._Bx._Ptr< / ValuePointer>
< / ArrayItems>
< / Expand>
< / Type>
< ;!-VC 2015->
<类型名称= std :: basic_string& lt; wchar_t，*& gt;>
< AlternativeType Name = std :: basic_string& lt; unsigned short，*& gt; />
< AlternativeType Name = std :: basic_string& lt; char16_t，*& gt; />
< DisplayString Condition = _ Mypair._Myval2._Myres& lt; _Mypair._Myval2._BUF_SIZE> {_ Mypair._Myval2._Bx._Buf，su}< / DisplayString>
< DisplayString Condition = _ Mypair._Myval2._Myres& gt; = __Mypair._Myval2._BUF_SIZE> {_ Mypair._Myval2._Bx._Ptr，su}< / DisplayString>
< StringView Condition = _ Mypair._Myval2._Myres& lt; _Mypair._Myval2._BUF_SIZE> _Mypair._Myval2._Bx._Buf，su< / StringView>
< StringView Condition = _ Mypair._Myval2._Myres& gt; = __Mypair._Myval2._BUF_SIZE> _Mypair._Myval2._Bx._Ptr，su< / StringView>
< Expand>
< Item Name = [size] ExcludeView = simple> _Mypair._Myval2._Mysize< / Item>
<项目名称= [容量] ExcludeView =简单> _Mypair._Myval2._Myres< / Item>
< Item Name = [allocator] ExcludeView = simple> _Mypair< / Item>
< ArrayItems>
< Size> _Mypair._Myval2._Mysize< / Size>
< ValuePointer Condition = _ Mypair._Myval2._Myres& lt; _Mypair._Myval2._BUF_SIZE> _Mypair._Myval2._Bx._Buf< / ValuePointer>
< ValuePointer Condition = _ Mypair._Myval2._Myres& gt; = __Mypair._Myval2._BUF_SIZE> _Mypair._Myval2._Bx._Ptr< / ValuePointer>
< / ArrayItems>
< / Expand>
< / Type>
<类型名称= std :: basic_string& lt; char32_t，*& gt;>
< DisplayString Condition = _ Mypair._Myval2._Myres& lt; _Mypair._Myval2._BUF_SIZE> {_ Mypair._Myval2._Bx._Buf，s32}< / DisplayString>
< DisplayString Condition = _ Mypair._Myval2._Myres& gt; = __Mypair._Myval2._BUF_SIZE> {_ Mypair._Myval2._Bx._Ptr，s32}< / DisplayString>
< StringView Condition = _ Mypair._Myval2._Myres& lt; _Mypair._Myval2._BUF_SIZE> _Mypair._Myval2._Bx._Buf，s32< / StringView>
< StringView Condition = _ Mypair._Myval2._Myres& gt; = __Mypair._Myval2._BUF_SIZE> _Mypair._Myval2._Bx._Ptr，s32< / StringView>
< Expand>
< Item Name = [size] ExcludeView = simple> _Mypair._Myval2._Mysize< / Item>
<项目名称= [容量] ExcludeView =简单> _Mypair._Myval2._Myres< / Item>
< Item Name = [allocator] ExcludeView = simple> _Mypair< / Item>
< ArrayItems>
< Size> _Mypair._Myval2._Mysize< / Size>
< ValuePointer Condition = _ Mypair._Myval2._Myres& lt; _Mypair._Myval2._BUF_SIZE> _Mypair._Myval2._Bx._Buf< / ValuePointer>
< ValuePointer Condition = _ Mypair._Myval2._Myres& gt; = __Mypair._Myval2._BUF_SIZE> _Mypair._Myval2._Bx._Ptr< / ValuePointer>
< / ArrayItems>
< / Expand>
< / Type>
编辑
请参阅下面的最终监视控制台：
（还请注意，您只应复制 stl.natvis 您想要的，似乎完整复制/粘贴不起作用。）
I can't have a decent view of a basic std:string in VS2015 while debugging.
I followed the instructions given at this address :https://msdn.microsoft.com/fr-fr/library/jj620914.aspx
(that is debugger type set to native mode, and uncheck both Use Managed Compatibility Mode and Use Native Compatibility Mode) . I have also added the stl.nativs file to my solution.
Currently my debugger looks like :
I would like to see as a value directly "test" for my variable str (instead of a very complex tree). Can you help me with this ?
I find the answer, for a very strange reason the stl.natvis file that I found in my VS Installation directory ( C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\Packages\Debugger\Visualizers for me ) and that I have added to my project is not recognised by the debugger automatically.
So the solution was to add another Debugger visualization file (.natvis) to my solution (right click ->add new item ) and to copy/past the content of the stl.natvis file to this new file. After rebuild, the standard std:string is appropriately displayed by the debugger.
For completeness, see below the part of the stl.natvis that deals with std::string for visual studio 2015.
<!-- VC 2015 -->
<Type Name="std::basic_string<char,*>">
<DisplayString Condition="_Mypair._Myval2._Myres < _Mypair._Myval2._BUF_SIZE">{_Mypair._Myval2._Bx._Buf,na}</DisplayString>
<DisplayString Condition="_Mypair._Myval2._Myres >= _Mypair._Myval2._BUF_SIZE">{_Mypair._Myval2._Bx._Ptr,na}</DisplayString>
<StringView Condition="_Mypair._Myval2._Myres < _Mypair._Myval2._BUF_SIZE">_Mypair._Myval2._Bx._Buf,na</StringView>
<StringView Condition="_Mypair._Myval2._Myres >= _Mypair._Myval2._BUF_SIZE">_Mypair._Myval2._Bx._Ptr,na</StringView>
<Expand>
<Item Name="[size]" ExcludeView="simple">_Mypair._Myval2._Mysize</Item>
<Item Name="[capacity]" ExcludeView="simple">_Mypair._Myval2._Myres</Item>
<Item Name="[allocator]" ExcludeView="simple">_Mypair</Item>
<ArrayItems>
<Size>_Mypair._Myval2._Mysize</Size>
<ValuePointer Condition="_Mypair._Myval2._Myres < _Mypair._Myval2._BUF_SIZE">_Mypair._Myval2._Bx._Buf</ValuePointer>
<ValuePointer Condition="_Mypair._Myval2._Myres >= _Mypair._Myval2._BUF_SIZE">_Mypair._Myval2._Bx._Ptr</ValuePointer>
</ArrayItems>
</Expand>
</Type>
<!-- VC 2015 -->
<Type Name="std::basic_string<wchar_t,*>">
<AlternativeType Name="std::basic_string<unsigned short,*>" />
<AlternativeType Name="std::basic_string<char16_t,*>" />
<DisplayString Condition="_Mypair._Myval2._Myres < _Mypair._Myval2._BUF_SIZE">{_Mypair._Myval2._Bx._Buf,su}</DisplayString>
<DisplayString Condition="_Mypair._Myval2._Myres >= _Mypair._Myval2._BUF_SIZE">{_Mypair._Myval2._Bx._Ptr,su}</DisplayString>
<StringView Condition="_Mypair._Myval2._Myres < _Mypair._Myval2._BUF_SIZE">_Mypair._Myval2._Bx._Buf,su</StringView>
<StringView Condition="_Mypair._Myval2._Myres >= _Mypair._Myval2._BUF_SIZE">_Mypair._Myval2._Bx._Ptr,su</StringView>
<Expand>
<Item Name="[size]" ExcludeView="simple">_Mypair._Myval2._Mysize</Item>
<Item Name="[capacity]" ExcludeView="simple">_Mypair._Myval2._Myres</Item>
<Item Name="[allocator]" ExcludeView="simple">_Mypair</Item>
<ArrayItems>
<Size>_Mypair._Myval2._Mysize</Size>
<ValuePointer Condition="_Mypair._Myval2._Myres < _Mypair._Myval2._BUF_SIZE">_Mypair._Myval2._Bx._Buf</ValuePointer>
<ValuePointer Condition="_Mypair._Myval2._Myres >= _Mypair._Myval2._BUF_SIZE">_Mypair._Myval2._Bx._Ptr</ValuePointer>
</ArrayItems>
</Expand>
</Type>
<Type Name="std::basic_string<char32_t,*>">
<DisplayString Condition="_Mypair._Myval2._Myres < _Mypair._Myval2._BUF_SIZE">{_Mypair._Myval2._Bx._Buf,s32}</DisplayString>
<DisplayString Condition="_Mypair._Myval2._Myres >= _Mypair._Myval2._BUF_SIZE">{_Mypair._Myval2._Bx._Ptr,s32}</DisplayString>
<StringView Condition="_Mypair._Myval2._Myres < _Mypair._Myval2._BUF_SIZE">_Mypair._Myval2._Bx._Buf,s32</StringView>
<StringView Condition="_Mypair._Myval2._Myres >= _Mypair._Myval2._BUF_SIZE">_Mypair._Myval2._Bx._Ptr,s32</StringView>
<Expand>
<Item Name="[size]" ExcludeView="simple">_Mypair._Myval2._Mysize</Item>
<Item Name="[capacity]" ExcludeView="simple">_Mypair._Myval2._Myres</Item>
<Item Name="[allocator]" ExcludeView="simple">_Mypair</Item>
<ArrayItems>
<Size>_Mypair._Myval2._Mysize</Size>
<ValuePointer Condition="_Mypair._Myval2._Myres < _Mypair._Myval2._BUF_SIZE">_Mypair._Myval2._Bx._Buf</ValuePointer>
<ValuePointer Condition="_Mypair._Myval2._Myres >= _Mypair._Myval2._BUF_SIZE">_Mypair._Myval2._Bx._Ptr</ValuePointer>
</ArrayItems>
</Expand>
</Type>
Edit
See below the final watch console :
(also please note that you should only copy part of the stl.natvis that you want, it seems that a full copy/past does not work.)
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