mirrors/neovim
1
0
Fork 0
mirror of https://github.com/neovim/neovim.git synced 2025-10-21 17:21:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

feat(vim.iter): add Iter:flatten (#26786)

Browse Source 
Co-authored-by: Gregory Anders <greg@gpanders.com>
Co-authored-by: Jongwook Choi <wookayin@gmail.com>
This commit is contained in:
JD
2024-01-10 21:57:51 -05:00
committed by GitHub
parent a7550a20e0
commit a767c046f4
3 changed files with 132 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
test/functional/lua/iter_spec.lua
View File

@@ -462,6 +462,38 @@ describe('vim.iter', function()
)
end)
it('flatten()', function()
local t = { { 1, { 2 } }, { { { { 3 } } }, { 4 } }, { 5 } }
eq(t, vim.iter(t):flatten(-1):totable())
eq(t, vim.iter(t):flatten(0):totable())
eq({ 1, { 2 }, { { { 3 } } }, { 4 }, 5 }, vim.iter(t):flatten():totable())
eq({ 1, 2, { { 3 } }, 4, 5 }, vim.iter(t):flatten(2):totable())
eq({ 1, 2, { 3 }, 4, 5 }, vim.iter(t):flatten(3):totable())
eq({ 1, 2, 3, 4, 5 }, vim.iter(t):flatten(4):totable())
local m = { a = 1, b = { 2, 3 }, d = { 4 } }
local it = vim.iter(m)
local flat_err = 'flatten%(%) requires a list%-like table'
matches(flat_err, pcall_err(it.flatten, it))
-- cases from the documentation
local simple_example = { 1, { 2 }, { { 3 } } }
eq({ 1, 2, { 3 } }, vim.iter(simple_example):flatten():totable())
local not_list_like = vim.iter({ [2] = 2 })
matches(flat_err, pcall_err(not_list_like.flatten, not_list_like))
local also_not_list_like = vim.iter({ nil, 2 })
matches(flat_err, pcall_err(not_list_like.flatten, also_not_list_like))
local nested_non_lists = vim.iter({ 1, { { a = 2 } }, { { nil } }, { 3 } })
eq({ 1, { a = 2 }, { nil }, 3 }, nested_non_lists:flatten():totable())
-- only error if we're going deep enough to flatten a dict-like table
matches(flat_err, pcall_err(nested_non_lists.flatten, nested_non_lists, math.huge))
end)
it('handles map-like tables', function()
local it = vim.iter({ a = 1, b = 2, c = 3 }):map(function(k, v)
if v % 2 ~= 0 then