Clang error recovery

[Andrei Alexandrescu]

On 04/06/2010 04:52 PM, Walter Bright wrote:
> Don wrote:
>> There's also an ErrorExpression which is used in many places, and it
>> generally works properly in supressing errors. (__error shows up in
>> error messages when it hasn't been treated properly).
>
> Attempting to correct the error and move forward with the compilation
> sounds good, but generally is a hopeless failure. A far better approach,
> one that is half-implemented in dmd, is to replace failed types,
> expressions, etc., with special error productions, and then suppress
> further messages that have as operands one of those error productions.
>
> It's analogous to using NaNs in floating point.

NaP should be its name I guess :o).

Andrei