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3b69cf992e
* Installs luarocks WITH it's executable (easy to install other rocks if necessary) * Use Lua supplied with luarocks * Create Utils/luadocumentor.bat, which works with RELATIVE PATH ! -> Everybody can generate the doc * Updated launch files accordingly
66 lines
1.4 KiB
Lua
66 lines
1.4 KiB
Lua
--- MultiMap, a Map which has multiple values per key. <br>
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-- @class module
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-- @name pl.MultiMap
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--[[
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module ('pl.MultiMap')
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]]
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local classes = require 'pl.class'
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local tablex = require 'pl.tablex'
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local utils = require 'pl.utils'
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local List = require 'pl.List'
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local index_by,tsort,concat = tablex.index_by,table.sort,table.concat
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local append,extend,slice = List.append,List.extend,List.slice
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local append = table.insert
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local is_type = utils.is_type
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local class = require 'pl.class'
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local Map = require 'pl.Map'
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-- MultiMap is a standard MT
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local MultiMap = utils.stdmt.MultiMap
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class(Map,nil,MultiMap)
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MultiMap._name = 'MultiMap'
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function MultiMap:_init (t)
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if not t then return end
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self:update(t)
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end
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--- update a MultiMap using a table.
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-- @param t either a Multimap or a map-like table.
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-- @return the map
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function MultiMap:update (t)
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utils.assert_arg(1,t,'table')
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if Map:class_of(t) then
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for k,v in pairs(t) do
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self[k] = List()
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self[k]:append(v)
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end
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else
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for k,v in pairs(t) do
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self[k] = List(v)
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end
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end
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end
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--- add a new value to a key. Setting a nil value removes the key.
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-- @param key the key
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-- @param val the value
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-- @return the map
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function MultiMap:set (key,val)
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if val == nil then
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self[key] = nil
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else
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if not self[key] then
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self[key] = List()
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end
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self[key]:append(val)
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end
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end
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return MultiMap
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