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Fix debugger visualizer for Ext=gsl::dynamic_extent

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VS 2019 doesn't seem to match -1 for size_t template parameter, as a result dynamic span/basic_string_span/basic_zstring_span show extent as `extent = 4294967295` (for 32-bit builds). This change updates details::extent_type to have static constexpr size_ parameter for non-dynamic span/basic_string_span/basic_zstring_span and simplifies/removes dynamic versions from GSL.natvis

fixes #856
This commit is contained in:
Pavel P 2020-03-27 13:14:23 +06:00
parent 226a854a97
commit 830b081de7
2 changed files with 13 additions and 45 deletions
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47
GSL.natvis
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@ -19,9 +19,7 @@
</Expand>
</Type>
<!-- These types are from the span header. -->
<!-- This is for dynamic_extent spans. -->
<Type Name="gsl::span&lt;*, -1&gt;">
<Type Name="gsl::span&lt;*, *&gt;">
<DisplayString>{{ extent = {storage_.size_} }}</DisplayString>
<Expand>
<ArrayItems>
@ -31,43 +29,7 @@
</Expand>
</Type>
<!-- This works for constexpr size spans. -->
<Type Name="gsl::span&lt;*, *&gt;">
<DisplayString>{{ extent = {extent} }}</DisplayString>
<Expand>
<ArrayItems>
<Size>extent</Size>
<ValuePointer>storage_.data_</ValuePointer>
</ArrayItems>
</Expand>
</Type>
<!-- This is for dynamic_extent string_spans. -->
<Type Name="gsl::basic_string_span&lt;*, -1&gt;">
<DisplayString>{span_.storage_.data_,[span_.storage_.size_]na}</DisplayString>
<Expand>
<Item Name="[size]">span_.storage_.size_</Item>
<ArrayItems>
<Size>span_.storage_.size_</Size>
<ValuePointer>span_.storage_.data_</ValuePointer>
</ArrayItems>
</Expand>
</Type>
<!-- This works for constexpr size string_spans. -->
<Type Name="gsl::basic_string_span&lt;*, *&gt;">
<DisplayString>{span_.storage_.data_,[span_.extent]na}</DisplayString>
<Expand>
<Item Name="[size]">span_.extent</Item>
<ArrayItems>
<Size>span_.extent</Size>
<ValuePointer>span_.storage_.data_</ValuePointer>
</ArrayItems>
</Expand>
</Type>
<!-- This is for dynamic_extent zstring_spans. -->
<Type Name="gsl::basic_zstring_span&lt;*, -1&gt;">
<DisplayString>{span_.storage_.data_,[span_.storage_.size_]na}</DisplayString>
<Expand>
<Item Name="[size]">span_.storage_.size_</Item>
@ -78,13 +40,12 @@
</Expand>
</Type>
<!-- This works for constexpr size string_spans. -->
<Type Name="gsl::basic_zstring_span&lt;*, *&gt;">
<DisplayString>{span_.storage_.data_,[span_.extent]na}</DisplayString>
<DisplayString>{span_.storage_.data_,[span_.storage_.size_]na}</DisplayString>
<Expand>
<Item Name="[size]">span_.extent</Item>
<Item Name="[size]">span_.storage_.size_</Item>
<ArrayItems>
<Size>span_.extent</Size>
<Size>span_.storage_.size_</Size>
<ValuePointer>span_.storage_.data_</ValuePointer>
</ArrayItems>
</Expand>

7
include/gsl/span
View File

@ -355,6 +355,13 @@ namespace details
constexpr extent_type(size_type size) { Expects(size == Ext); }
constexpr size_type size() const noexcept { return Ext; }
private:
#if defined(GSL_USE_STATIC_CONSTEXPR_WORKAROUND)
static constexpr const size_type size_ = Ext; // static size equal to Ext
#else
static constexpr size_type size_ = Ext; // static size equal to Ext
#endif
};
template <>