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<flat_meow>: Implement natvis visualizers for flat_multimeow, simplify visualizer for flat_map #6015

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Merged
StephanTLavavej merged 3 commits into from
Jan 16, 2026
+13 −91
Merged

<flat_meow>: Implement natvis visualizers for flat_multimeow, simplify visualizer for flat_map #6015

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afdb1a9
Simplify natvis for std::flat_(multi)map
vmichal Jan 16, 2026
ae50f1b
Use std::flat_set natvis for std::flat_multiset as well.
vmichal Jan 16, 2026
1b2b0a2
Fallback visualization of std::flat_(multi)map can show size
vmichal Jan 16, 2026
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104 changes: 13 additions & 91 deletions stl/debugger/STL.natvis
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Original file line number Diff line number Diff line change
Expand Up @@ -1102,11 +1102,12 @@ SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

<!-- VC 2015 -->
<Type Name="std::deque&lt;*&gt;">
<DisplayString>{{ size={_Mypair._Myval2._Mysize} }}</DisplayString>
<Intrinsic Name="size" Expression="_Mypair._Myval2._Mysize" />
<DisplayString>{{ size={size()} }}</DisplayString>
<Expand>
<Item Name="[allocator]" ExcludeView="simple">_Mypair</Item>
<IndexListItems>
<Size>_Mypair._Myval2._Mysize</Size>
<Size>size()</Size>
<ValueNode>_Mypair._Myval2._Map[(($i + _Mypair._Myval2._Myoff) / _EEN_DS) % _Mypair._Myval2._Mapsize][($i + _Mypair._Myval2._Myoff) % _EEN_DS]</ValueNode>
</IndexListItems>
</Expand>
Expand Down Expand Up @@ -2296,75 +2297,21 @@ SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
</Expand>
</Type>

<!-- KeyContainer: vector, MappedContainer: vector -->
<Type Name="std::flat_map&lt;*,*,*,std::vector&lt;*&gt;,std::vector&lt;*&gt;&gt;">
<Intrinsic Name="size" Expression="(size_t)(_Data.keys._Mypair._Myval2._Mylast - _Data.keys._Mypair._Myval2._Myfirst)"/>
<Intrinsic Name="key_at" Expression="&amp;_Data.keys._Mypair._Myval2._Myfirst[index]">
<Parameter Name="index" Type="size_t" />
</Intrinsic>
<Intrinsic Name="value_at" Expression="&amp;_Data.values._Mypair._Myval2._Myfirst[index]">
<Parameter Name="index" Type="size_t" />
</Intrinsic>

<DisplayString>{{ size={size()} }}</DisplayString>

<Expand>
<Item Name="[comparator]" ExcludeView="simple">_Key_compare</Item>
<Item Name="[size]">size()</Item>
<CustomListItems>
<Variable Name="i" InitialValue="0" />
<Size>size()</Size>
<Loop>
<Item Name="[{*key_at(i)}]">*value_at(i)</Item>
<Exec>++i</Exec>
</Loop>
</CustomListItems>
</Expand>
</Type>

<!-- KeyContainer: std::deque, MappedContainer: std::vector -->
<Type Name="std::flat_map&lt;*,*,*,std::deque&lt;*&gt;,std::vector&lt;*&gt;&gt;">
<Intrinsic Name="size" Expression="_Data.keys._Mypair._Myval2._Mysize" />
<Intrinsic Name="key_at" Expression="&amp;_Data.keys._Mypair._Myval2._Map[((index + _Data.keys._Mypair._Myval2._Myoff) / _Data.keys._EEN_DS) %
_Data.keys._Mypair._Myval2._Mapsize][(index + _Data.keys._Mypair._Myval2._Myoff) % _Data.keys._EEN_DS]">
<Type Name="std::flat_map&lt;*&gt;">
<AlternativeType Name="std::flat_multimap&lt;*&gt;"/>
<Intrinsic Name="size" Expression="_Data.keys.size()"/>
<Intrinsic Name="key_at" Expression="&amp;_Data.keys[index]">
<Parameter Name="index" Type="size_t" />
</Intrinsic>
<Intrinsic Name="value_at" Expression="&amp;_Data.values._Mypair._Myval2._Myfirst[index]">
<Intrinsic Name="value_at" Expression="&amp;_Data.values[index]">
<Parameter Name="index" Type="size_t" />
</Intrinsic>

<DisplayString>{{ size={size()} }}</DisplayString>

<Expand>
<Item Name="[comparator]" ExcludeView="simple">_Key_compare</Item>
<Item Name="[size]">size()</Item>
<CustomListItems>
<Variable Name="i" InitialValue="0" />
<Size>size()</Size>
<Loop>
<Item Name="[{*key_at(i)}]">*value_at(i)</Item>
<Exec>++i</Exec>
</Loop>
</CustomListItems>
</Expand>
</Type>

<!-- KeyContainer: std::vector, MappedContainer: std::deque -->
<Type Name="std::flat_map&lt;*,*,*,std::vector&lt;*&gt;,std::deque&lt;*&gt;&gt;">
<Intrinsic Name="size" Expression="(size_t)(_Data.keys._Mypair._Myval2._Mylast - _Data.keys._Mypair._Myval2._Myfirst)" />
<Intrinsic Name="key_at" Expression="&amp;_Data.keys._Mypair._Myval2._Myfirst[index]">
<Parameter Name="index" Type="size_t" />
</Intrinsic>
<Intrinsic Name="value_at" Expression="&amp;_Data.values._Mypair._Myval2._Map[((index + _Data.values._Mypair._Myval2._Myoff) / _Data.values._EEN_DS) %
_Data.values._Mypair._Myval2._Mapsize][(index + _Data.values._Mypair._Myval2._Myoff) % _Data.values._EEN_DS]">
<Parameter Name="index" Type="size_t" />
</Intrinsic>

<DisplayString>{{ size={size()} }}</DisplayString>

<Expand>
<Item Name="[comparator]" ExcludeView="simple">_Key_compare</Item>
<Item Name="[size]">size()</Item>
<CustomListItems>
<Variable Name="i" InitialValue="0" />
<Size>size()</Size>
Expand All @@ -2376,37 +2323,11 @@ SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
</Expand>
</Type>

<!-- KeyContainer: std::deque, MappedContainer: std::deque -->
<Type Name="std::flat_map&lt;*,*,*,std::deque&lt;*&gt;,std::deque&lt;*&gt;&gt;">
<Intrinsic Name="size" Expression="_Data.keys._Mypair._Myval2._Mysize" />
<Intrinsic Name="key_at" Expression="&amp;_Data.keys._Mypair._Myval2._Map[((index + _Data.keys._Mypair._Myval2._Myoff) / _Data.keys._EEN_DS) %
_Data.keys._Mypair._Myval2._Mapsize][(index + _Data.keys._Mypair._Myval2._Myoff) % _Data.keys._EEN_DS]">
<Parameter Name="index" Type="size_t" />
</Intrinsic>
<Intrinsic Name="value_at" Expression="&amp;_Data.values._Mypair._Myval2._Map[((index + _Data.values._Mypair._Myval2._Myoff) / _Data.values._EEN_DS) %
_Data.values._Mypair._Myval2._Mapsize][(index + _Data.values._Mypair._Myval2._Myoff) % _Data.values._EEN_DS]">
<Parameter Name="index" Type="size_t" />
</Intrinsic>

<!-- fallback when the primary visualization (above) fails to parse, e.g. some custom containers -->
<Type Name="std::flat_map&lt;*&gt;" Priority="MediumLow">
<AlternativeType Name="std::flat_multimap&lt;*&gt;"/>
<Intrinsic Name="size" Expression="_Data.keys.size()"/>
<DisplayString>{{ size={size()} }}</DisplayString>

<Expand>
<Item Name="[comparator]" ExcludeView="simple">_Key_compare</Item>
<Item Name="[size]">size()</Item>
<CustomListItems>
<Variable Name="i" InitialValue="0" />
<Size>size()</Size>
<Loop>
<Item Name="[{*key_at(i)}]">*value_at(i)</Item>
<Exec>++i</Exec>
</Loop>
</CustomListItems>
</Expand>
</Type>

<!-- fallback for a custom container -->
<Type Name="std::flat_map&lt;*&gt;">
<DisplayString>{_Data}</DisplayString>
<Expand>
<Item Name="[comparator]" ExcludeView="simple">_Key_compare</Item>
<Item Name="[keys]">_Data.keys</Item>
Expand All @@ -2423,6 +2344,7 @@ SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
</Type>

<Type Name="std::flat_set&lt;*&gt;">
<AlternativeType Name="std::flat_multiset&lt;*&gt;"/>
<DisplayString>{_Mycont}</DisplayString>
<Expand>
<Item Name="[comparator]" ExcludeView="simple">_Mycomp</Item>
Expand Down