mirror of
https://github.com/neovim/neovim.git
synced 2024-12-29 14:41:06 -07:00
40 lines
1006 B
Lua
40 lines
1006 B
Lua
|
--- Shared functions
|
||
|
|
-- - Used by Nvim and tests
|
||
|
|
-- - Can run in vanilla Lua (do not require a running instance of Nvim)
|
||
|
|
|
||
|
|
|
||
|
|
--- Merge map-like tables.
|
||
|
|
--
|
||
|
|
--@see |extend()|
|
||
|
|
--
|
||
|
|
-- behavior: Decides what to do if a key is found in more than one map:
|
||
|
|
-- "error": raise an error
|
||
|
|
-- "keep": skip
|
||
|
|
-- "force": set the item again
|
||
|
|
local function tbl_extend(behavior, ...)
|
||
|
|
if (behavior ~= 'error' and behavior ~= 'keep' and behavior ~= 'force') then
|
||
|
|
error('invalid "behavior": '..tostring(behavior))
|
||
|
|
end
|
||
|
|
local ret = {}
|
||
|
|
for i = 1, select('#', ...) do
|
||
|
|
local tbl = select(i, ...)
|
||
|
|
if tbl then
|
||
|
|
for k, v in pairs(tbl) do
|
||
|
|
if behavior ~= 'force' and ret[k] ~= nil then
|
||
|
|
if behavior == 'error' then
|
||
|
|
error('key found in more than one map: '..k)
|
||
|
|
end -- Else behavior is "keep".
|
||
|
|
else
|
||
|
|
ret[k] = v
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
return ret
|
||
|
|
end
|
||
|
|
|
||
|
|
local module = {
|
||
|
|
tbl_extend = tbl_extend,
|
||
|
|
}
|
||
|
|
return module
|