On Mon, Apr 29, 2013 at 1:32 AM, Dan Kortschak < dan.kortsc...@adelaide.edu.au> wrote:
> This would a useful addition to the process though, so it is probably > worth filing an issue with the Go project. > > I realized it isn't a bug. Go compiler takes in consideration a distance between '//line' directive and a line with error. I added experimental support for '//line' directive at https://github.com/antage/ragel-go/tree/golang-6 I need a feedback about how to accurate go compiler report error line location in *.rl file. > On 28/04/2013, at 5:30 PM, "Anton Ageev" <ant...@gmail.com> wrote: > > > It's interesting undocumented feature. I played with go examples and I > got very discouraging behaviour. > > > > Example 1. > > > > atoi.go: > > ... > > //line atoi.rl:34 > > neg = ttrue // I change 'true' to 'ttrue' to make error message > > case 1: > > //line atoi.rl:35 > > > > val = val * 10 + (int(data[p]) - '0') > > ... > > > > I run `go run atoi.go` and I got following message: > > > > # command-line-arguments > > atoi.rl:34[/home/antage/workspace/ragel-go/examples/go/atoi.go:163]: > undefined: ttrue > > > > It's looking fine. > > > > Example 2. > > > > atoi.go: > > ... > > //line atoi.rl:34 > > > > neg = ttrue // I change 'true' to 'ttrue' to make error message > > case 1: > > //line atoi.rl:35 > > > > val = val * 10 + (int(data[p]) - '0') > > ... > > > > I just add empty line after '//line atoi.rl:34' directive. > > I got following message: > > > > # command-line-arguments > > atoi.rl:35[/home/antage/workspace/ragel-go/examples/go/atoi.go:164]: > undefined: ttrue > > > > It's not fine. Error isn't at atoi.rl:35, it's at atoi.rl:34. > > > > Ragel generates a lot of empty lines when embedding an action code. So > we can't rely on '//line' directive to locate errors in .rl files. > > _______________________________________________ > ragel-users mailing list > ragel-users@complang.org > http://www.complang.org/mailman/listinfo/ragel-users > -- WBR, Anton
_______________________________________________ ragel-users mailing list ragel-users@complang.org http://www.complang.org/mailman/listinfo/ragel-users