prosody
36df30395c44
util/multitable.lua

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util/multitable.lua @ 4895:36df30395c44

util.multitable: No longer use table.remove to drop elements from the stack, when key is nil immediately (on empty tables) the previous stack entry's key gets removed instead
author Matthew Wild <mwild1@gmail.com>
date Sat, 19 May 2012 15:35:49 +0100
parent 4894:c874dc4ccbd7
child 4901:05ea6c1ae393
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equal deleted inserted replaced
4894:c874dc4ccbd7 4895:36df30395c44
5 -- This project is MIT/X11 licensed. Please see the 5 -- This project is MIT/X11 licensed. Please see the
6 -- COPYING file in the source package for more information. 6 -- COPYING file in the source package for more information.
7 -- 7 --
8 8
9 local select = select; 9 local select = select;
10 local t_insert, t_remove = table.insert, table.remove; 10 local t_insert = table.insert;
11 local unpack, pairs, next, type = unpack, pairs, next, type; 11 local unpack, pairs, next, type = unpack, pairs, next, type;
12 12
13 module "multitable" 13 module "multitable"
14 14
15 local function get(self, ...) 15 local function get(self, ...)
133 local keys = { }; 133 local keys = { };
134 local function it(self) 134 local function it(self)
135 local depth = #stack; 135 local depth = #stack;
136 local key = next(stack[depth], keys[depth]); 136 local key = next(stack[depth], keys[depth]);
137 if key == nil then -- Go up the stack 137 if key == nil then -- Go up the stack
138 t_remove(stack); 138 stack[depth], keys[depth] = nil, nil;
139 t_remove(keys);
140 if depth > 1 then 139 if depth > 1 then
141 return it(self); 140 return it(self);
142 end 141 end
143 return; -- The end 142 return; -- The end
144 else 143 else