Bigcheese added inline comments.
================
Comment at: clang/docs/Modules.rst:651
+
+ requires cplusplus {
+ header "vector"
----------------
iana wrote:
> Is there any kind of `else` syntax here? Or do you just use `!whatever` for
> the else? Is something like this valid?
>
> ```
> requires cplusplus11 {
> ...
> }
> requires cplusplus && !cplusplus11 {
> ...
> }
> ```
> Or would you nest the `requires`? If you wanted OR, would you just have to
> duplicate the requires block body?
There's currently no `else` syntax, although I don't think it would be hard to
add. Nesting is allowed. The syntax in your example would be:
```
requires cplusplus11 {
...
}
requires cplusplus, !cplusplus11 {
...
}
```
OR currently requires duplication. The idea is that the feature list
expressions just aren't that complex in practice.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D118311/new/
https://reviews.llvm.org/D118311
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