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152 lines
3.1 KiB
Markdown
152 lines
3.1 KiB
Markdown
---
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title: "Use lua to reimplement core plugins"
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categories: [blog]
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description: "The core plugins of spacevim have been reimplemented with lua."
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type: article
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---
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# [Blogs](../blog/) >> Use Lua to Reimplement Core Plugins
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After comparing the speed of vim script and lua, I want to rewrite SpaceVim with Lua.
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**NOTE:** All vim scripts will be retained to ensure support for older versions of Vim and NeoVim
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<!-- vim-markdown-toc GFM -->
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- [How to compare speed](#how-to-compare-speed)
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- [Which version of neovim should I use?](#which-version-of-neovim-should-i-use)
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- [What has been done?](#what-has-been-done)
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- [The next step](#the-next-step)
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<!-- vim-markdown-toc -->
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### How to compare speed
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with following vim script, and run:
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- `:TestFunc Fibo 1000`
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- `:TestFunc Fibo 10000000`
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- `:TestFunc LuaFibo 1000`
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- `:TestFunc LuaFibo 10000000`
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```viml
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function! Fibo(N) abort
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let t = a:N
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let b = 0
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while t > 0
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let t = t - 1
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let a = 1
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let b = 1
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let c = 73
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while c > 0
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let c = c - 1
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let tmp = a + b
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let a = b
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let b = tmp
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endwhile
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endwhile
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echo b
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endfunction
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function! LuaFibo(N) abort
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lua << EOF
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local a, b, r, c, t
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t = vim.api.nvim_eval("str2nr(a:N)")
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while t > 0 do
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t = t - 1
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a = 1
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b = 1
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c = 73
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while c > 0 do
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c = c - 1
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r = a + b
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a = b
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b = r
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end
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end
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print(string.format("%d", b))
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EOF
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endfunction
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function! s:test(...) abort
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" for func in a:000
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let start = reltime()
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call call(a:1,[a:2])
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let sec = reltimefloat(reltime(start))
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echom printf('%s(%d): %.6g sec', a:1, a:2, sec)
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" endfor
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endfunction
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command! -nargs=+ TestFunc call s:test(<f-args>)
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```
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results:
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```
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Fibo(1000): 0.410364 sec
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Fibo(10000000): 1470.280914 sec
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LuaFibo(1000): 9.052000e-4 sec
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LuaFibo(10000000): 1.235385 sec
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```
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### Which version of neovim should I use?
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It is recommended to use neovim 0.9.0 or 0.9.1
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### What has been done?
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**Basic:**
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- The spacevim runtime logger
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The default runtime logger can be used in in both vim script and lua script. For example:
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```lua
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-- in lua script test.lua
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local log = require('spacevim.logger').derive('test')
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local function test_foo()
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log.debug('this is debug message')
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end
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test_foo()
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```
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Then the runtime log via `SPC h L`, and you should be able to see:
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```
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[ test ] [17:14:56:907] [ Debug ] this is debug message
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```
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**APIs:**
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- [file](../api/file/)
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- [system](../api/system/)
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- [logger](../api/logger/)
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- [job](../api/job/)
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- [data#toml](../api/data/toml/)
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- [notify](../api/notify/)
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**Built-in Plugins:**
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These plugins are very commonly used in SpaceVim, so they are rewritten using lua for a better experience.
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- alternate file manager
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Use `:A {type}` to jump to alternate file quickly.
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- projectmanager
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The project manager provides the function of quickly switching to the project root directory.
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- key binding guide
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- code runner
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- flygrep
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- The REPL plugin
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### The next step
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Please subscribe to the [SpaceVim blog](../blog/) to get the latest updates.
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