reserve identifier is for *type-id* is
#759
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Relevant lines pasted from the grammar:
```c
//G is-as-expression:
//G prefix-expression
//G is-as-expression is-value-constraint
//GTODO type-id is-type-constraint
```
A *prefix-expression* can be an *unqualified-id*, which can also be a
*type-id*. So when the latter is implemented, it would break any code
using `identifier is` to test an expression.
I understand the usual way of disambiguating is to require parens, so I
have done that here to fix 5 `regression_tests`.
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I have implemented |
ntrel
changed the title
identifier is as *type-id* isidentifier is for *type-id* is
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@filipsajdak Thanks! I've started working on type |
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I have implemented solution for types on cpp2 side. I am struggling with type as a template. If you will need any explanation just let me know. |
Closed
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Closing in favour of #782. |
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Relevant lines from the grammar:
Both prefix-expression and type-id can be an unqualified-id.
T isis not implemented yet, but when it is, it wouldconflict withbe parsed asidentifier isto test an expression.I understand the usual way of disambiguating between a type or an expression is to require parens to force an expression, so I have done that here to fix 5
regression_tests. I have added a temporary error foridentifier is, because that should be the unimplementedT isform.Update: So I've moved the type-id form above prefix-expression in the grammar.