On 4/10/12 5:53 AM, Henri Sivonen wrote:
The use case I have is targeting Rust with the translator that currently targets C++ and generates the HTML parser in Gecko. (It uses goto hidden behind macros to emulate break and continue by label in C++.)
There is currently no way to do that kind of control flow beyond using flags with `if` checks or restructuring the code in some other way (tail calls, if they worked, seem like they would be useful). I believe our `break` can only target loops in any case.
How hard would it be do you think to prototype a version that avoids these control-flow features? Also, how important is fall-through for alt vs break to labeled blocks?
I think adding labeled blocks/loops and the ability to break/continue with a label is plausible, but a fair bit of work. Fall-through in alt seems less likely. Certainly it would be good to do some experiments and measurements, either of your parser or of micro-benchmarks.
Niko _______________________________________________ Rust-dev mailing list [email protected] https://mail.mozilla.org/listinfo/rust-dev
