[mkgmap-dev] patch to improve style throughput

Wed May 2 10:34:36 BST 2018

Hi Steve,

thanks for testing. I think your idea would require more work with little gain:
1) We have to make sure that no action deletes a. This information is not available now.
2) We have to know much more info about the rules than what we get in keystring.
3) We have to change the way how we access the index.
We only gain a smaller set of rules but we would still evaluate the same amount of rules.

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Steve Ratcliffe <steve at parabola.me.uk>
Gesendet: Dienstag, 1. Mai 2018 23:49:01
An: mkgmap-dev at lists.mkgmap.org.uk
Betreff: Re: [mkgmap-dev] patch to improve style throughput

Hi Gerd,

> @Steve: Please let me know if you can think of a case that might not work.

It looks good, I couldn't find anything that didn't work.

It may not be possible or worth doing this, but if a rule can resolve,
then its actions can be ignored unless continue with_actions/propagate
is set.

So in the following, rules 2 and 4 can never match with a=1.

0: a=* {set b='${something}'}
1: b=2 {set c=2} [0x1]
2: c=* {set a=2}
3: c=1 {set d=2}
4: c=2 {set d=1}
5: d=1 [0x10401 resolution 24]
6: d=2 [0x10402 resolution 24]
7: b=1 [0x2]

Steve
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