Labeled continue

[pierrec]

package main

func main() {
	var y int
next:
	for {
		y++
		if y < 5 {
			continue next
		}
	}
}

#include "main.h"

// -- Implementation --

int main(void) {
    so_int y = 0;
    next:;
    for (;;) {
        y++;
        if (y < 5) {
            continue next;
        }
    }
    next_end:;
    return 0;
}

/var/folders/lb/nhsppbxs5_v27pn_x3kf66wc0000gn/T/solod_build2914996221/main.c:11:21: error: expected ';' after continue statement
   11 |             continue next;
      |                     ^
      |                     ;
1 error generated.
so run: C compiler: exit status 1

[nalgeon]

Shouldn't continue next in your example be just continue? What is the reason for using a label here? Not to mention this is an endless loop.

[nalgeon]

Labeled continue won't be supported, unfortunately. It's just not worth it, in my opinion.

You can extract the inner loop into a function instead:

// before
outer:
for i := range items {
    for j := range other {
        if cond {
            continue outer
        }
        // work
    }
    // more work
}

// after
for i := range items {
    if !processInner(other) {
        continue
    }
    // more work
}

[pierrec]

Shouldn't continue next in your example be just continue? What is the reason for using a label here? Not to mention this is an endless loop.

yes, this is a contrived example to reproduce the error. The one I had when I stumbled upon it was nested for loops.

I have discarded the continue with label and used breaks but it is (a bit) less straight forward.

[pierrec]

Labeled continue won't be supported, unfortunately. It's just not worth it, in my opinion.

That's fine, it can be worked around. Maybe just have a note in the specs.