gmod_src: Added continue keyword to Lua

[garry]

[B]Revision 649[/B]
[INDENT]Added continue keyword to Lua[/INDENT] [B]Changed Files:[/B]
[LIST]
[*]trunk/src_garrysmod/public/Lua/llex.c
[*]trunk/src_garrysmod/public/Lua/llex.h
[*]trunk/src_garrysmod/public/Lua/lparser.c
[/LIST]

Committed By [B]Garry Newman[/B]

[DarKSunrise]

Nice, thanks!

[Lexic]

:woop:

[Lily]

:neckbeard:

Finally, gonna re-write my code for this, looks alot nicer :3:

[garry]

[lua]for i=1, 10

if ( i < 5 ) then continue end

print( i )

end[/lua]

would print 5 onwards

[editline]05:21PM[/editline]

Also, real world example..

[lua]function gmsave.EntitySaveList( ents )

local tabEnts = {}
local savedEnts = {}
local SaveName = 1

for k, v in pairs( ents ) do

if ( !IsValid( v ) ) then continue end

local t = gmsave.EntitySave( v )

if ( !gmsave.ShouldSaveEntity( v, t ) ) then continue end

v.GMSaveName = "ent" .. SaveName;
tabEnts[ v.GMSaveName ] = t;
savedEnts[ v.GMSaveName ] = v

SaveName = SaveName + 1

end

return tabEnts, savedEnts;

end[/lua]

[Chrisaster]

[QUOTE=iRzilla;25175792]Can anybody explain how this is used?[/QUOTE]

It skips to the next iteration in the loop.

[lua]for i=1, 5 do
if i == 3 then
continue
end

Msg(i, ", ")
end[/lua]

The output would be "1, 2, 4, 5, ".

[Cubar]

continue is useful thanks garry.

[LuaStoned]

Wow fuck yes, I was talking to a shitload of people about howto achieve this like a week ago, it's like you read my mind! :D

[|FlapJack|]

Awesome. No more if blocks in entire loops.

[ralle105]

:love:

[Kogitsune]

Yes :razz:!

[disseminate]

Fuck yeah, this is amazing

[aVoN]

Nice to see this addition. Still unclear to me, why lua hasn't this from default.

[dingusnin]

it should be named "skip" :D

[Loures]

Awesome!

[Kogitsune]

Lua has never had native continue afaik.

[servak]

-Snip-

[Neico]

[QUOTE=iRzilla;25271747]Garry rewrote Lua to work with CStyle syntax, maybe he removed it then?[/QUOTE]

he didn't rewrote lua (else he would have done it in C++ rather than in C as lua is written in C) he only added the C-Style synatx chars which is pretty easy to add to the interpreter
[cpp]case '|': { // C-Style OR
next(ls);
if (ls->current == '=') { next(ls); return '|='; }
else if (ls->current == '|') { next(ls); return '||'; }
else return '|';
}[/cpp]

this would be the example of adding || to lua (it wouldn't work with just that as some may have noticed, but I can't remember where the rest of the code for it was)

and as Kogitsune already said, continue is not standard in Lua, even in the new 5.2

[aVoN]

[QUOTE=dingusnin;25261447]it should be named "skip" :D[/QUOTE]

No, it skips the remaining stuff in the loop and [B]continues[/B] to the next iteration step of the loop. continue > skip.

[.kurozael]

Not totally amazing, we've been doing without it for years, but it's a feature none-the-less. Good job.