[Issue 24587] New: Allow negated qualifiers in cast expressions
d-bugmail at puremagic.com
d-bugmail at puremagic.com
Wed Jun 5 13:07:53 UTC 2024
https://issues.dlang.org/show_bug.cgi?id=24587
Issue ID: 24587
Summary: Allow negated qualifiers in cast expressions
Product: D
Version: D2
Hardware: All
OS: All
Status: NEW
Severity: enhancement
Priority: P1
Component: dmd
Assignee: nobody at puremagic.com
Reporter: qs.il.paperinik at gmail.com
Allow a `!` in a cast expression to remove specific qualifiers from a type.
Unlike `cast()`, notably `cast(!shared)` removes `shared` only and leaves
`inout` and/or `const` intact if they’re present. More than one can be used and
`!` negates all of them: `cast(!const shared)` removes `const` and `shared`,
but leaves `inout` intact.
Grammar:
```diff
CastQual:
cast ( TypeCtors? ) UnaryExpression
+ cast ( ! TypeCtors ) UnaryExpression
```
Note that the `TypeCtors` in the second rule one aren’t optional.
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