| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849 |
- -- The MIT License (MIT)
- --
- -- Copyright (c) 2014, Cyril David <cyx@cyx.is>
- --
- -- Permission is hereby granted, free of charge, to any person obtaining a copy
- -- of this software and associated documentation files (the "Software"), to deal
- -- in the Software without restriction, including without limitation the rights
- -- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- -- copies of the Software, and to permit persons to whom the Software is
- -- furnished to do so, subject to the following conditions:
- --
- -- The above copyright notice and this permission notice shall be included in
- -- all copies or substantial portions of the Software.
- --
- -- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- -- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- -- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- -- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- -- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- -- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- -- THE SOFTWARE.
- local function equal(x, y)
- local t1, t2 = type(x), type(y)
- -- Shortcircuit if types not equal.
- if t1 ~= t2 then return false end
- -- For primitive types, direct comparison works.
- if t1 ~= 'table' and t2 ~= 'table' then return x == y end
- -- Since we have two tables, make sure both have the same
- -- length so we can avoid looping over different length arrays.
- if #x ~= #y then return false end
- -- Case 1: check over all keys of x
- for k,v in pairs(x) do
- if not equal(v, y[k]) then return false end
- end
- -- Case 2: check over `y` this time.
- for k,v in pairs(y) do
- if not equal(v, x[k]) then return false end
- end
- return true
- end
- return equal
|