# Navigator
- Easy code navigation, view diagnostic errors, see relationships of functions, variables
- A plugin combines the power of LSP and 🌲🏡 Treesitter together. Not only provids a better highlight but also help you analyse symbol context effectively.
Here are some examples
#### Example: Javascript closure
The following screenshot shows javascript call tree 🌲 of variable `browser` insides a closure. This feature is similar to incoming & outgoing calls from LSP. It is designed for the symbol analysis.
![navigator](https://user-images.githubusercontent.com/1681295/126022829-291a7a2e-4d24-4fde-8293-5ae61562e67d.jpg)
Explanation:
- The first line of floating windows shows there are 3 references for the symbol _browser_ in closure.js
- The first reference of browser is an assignment, an emoji 📝 indicates the value is changed in this line. In many
cases, we search for references to find out when the value changed.
- The second reference of `browser` is inside function `displayName` and `displayName` sit inside `makeFunc`, So you
will see ` displayName{} <- makeFunc{}`
- The third similar to the second, as var browser is on the right side of '=', the value not changed in this line
and emoji is not shown.
#### Example: C++ definition
C++ example: search reference and definition
![cpp_ref](https://user-images.githubusercontent.com/1681295/119215215-8bd7a080-bb0f-11eb-82fc-8cdf1955e6e7.jpg)
You may find a 🦕 dinosaur(d) on the line of `Rectangle rect,` which means there is a definition (d for def) of rect in this line.
`<- f main()` means the definition is inside function main().
#### Golang struct type
Struct type references in multiple Go ﳑ files
![go_reference](https://user-images.githubusercontent.com/1681295/119123823-54b3b180-ba73-11eb-8790-097601e10f6a.gif)
This feature can provide you info in which function/class/method the variable was referenced. It is handy for a large
project where class/function definition is too long to fit into the preview window. Also provides a bird's eye view of where the
variable is:
- Referenced
- Modified
- Defined
- Called
# Features:
- LSP easy setup. Support the most commonly used lsp clients setup. Dynamic lsp activation based on buffer type. This
also enables you to handle workspace with mixed types of codes (e.g. Go + javascript + yml). A better default setup is
included for LSP clients.
- Out of box experience. 10 lines of minimum vimrc can turn your neovim into a full-featured LSP & Treesitter powered IDE
- UI with floating windows, navigator provides a visual way to manage and navigate through symbols, diagnostic errors, reference etc. It covers
all features(handler) provided by LSP from commonly used search reference, to less commonly used search for interface
implementation.
- Code Action GUI
- Luv async thread and tasks
- Edit your code in preview window
- Async request with lsp.buf_request for reference search
- Treesitter symbol search. It is handy for large files (Some of LSP e.g. sumneko_lua, there is a 100kb file size limitation?)
- FZY search with either native C (if gcc installed) or Lua-JIT
- LSP multiple symbol highlight/marker and hop between document references
- Preview definination/references
- Better navigation for diagnostic errors, Navigate through all files/buffers that contain errors/warnings
- Grouping references/implementation/incoming/outgoing based on file names.
- Treesitter based variable/function context analysis. It is 10x times faster compared to purely rely on LSP. In most
of the case, it takes treesitter less than 4 ms to read and render all nodes for a file of 1,000 LOC.
- The first plugin, IMO, allows you to search in all treesitter symbols in the workspace.
- Nerdfont, emoji for LSP and treesitter kind
- Optimize display (remove trailing bracket/space), display the caller of reference, de-duplicate lsp results (e.g reference
in the same line). Using treesitter for file preview highlighter etc
- ccls call hierarchy (Non-standard `ccls/call` API) supports
- Syntax folding based on treesitter folding algorithm. (It behaves similar to vs-code)
- Fully support LSP CodeAction, CodeLens, CodeLens action. Help you improve code quality.
- LRU cache for treesitter nodes
- Lazy loader friendly
- Multigrid support (different font and detachable)
# Why a new plugin
I'd like to go beyond what the system is offering.
# Similar projects / special mentions:
- [nvim-lsputils](https://github.com/RishabhRD/nvim-lsputils)
- [nvim-fzy](https://github.com/mfussenegger/nvim-fzy.git)
- [fuzzy](https://github.com/amirrezaask/fuzzy.nvim)
- [lspsaga](https://github.com/glepnir/lspsaga.nvim)
- [fzf-lsp lsp with fzf as gui backend](https://github.com/gfanto/fzf-lsp.nvim)
- [nvim-treesitter-textobjects](https://github.com/nvim-treesitter/nvim-treesitter-textobjects)
# Install
Require nvim-0.5.0 (a.k.a nightly)
You can remove your lspconfig setup and use this plugin.
The plugin depends on lspconfig and [guihua.lua](https://github.com/ray-x/guihua.lua), which provides GUI and fzy support(migrate from [romgrk's project](romgrk/fzy-lua-native)).
```vim
Plug 'neovim/nvim-lspconfig'
Plug 'ray-x/guihua.lua', {'do': 'cd lua/fzy && make' }
Plug 'ray-x/navigator.lua'
```
Note: Highly recommened: 'nvim-treesitter/nvim-treesitter'
Packer
```lua
use {'ray-x/navigator.lua', requires = {'ray-x/guihua.lua', run = 'cd lua/fzy && make'}}
```
## Setup
Easy setup **BOTH** lspconfig and navigator with one liner. Navigator covers around 20 most used LSP setup.
```lua
lua require'navigator'.setup()
```
## Sample vimrc turning your neovim into a full-featured IDE
```vim
call plug#begin('~/.vim/plugged')
Plug 'neovim/nvim-lspconfig'
Plug 'ray-x/guihua.lua', {'do': 'cd lua/fzy && make' }
Plug 'ray-x/navigator.lua'
" Plug 'hrsh7th/nvim-compe' and other plugins you commenly use...
" optional, if you need treesitter symbol support
Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}
call plug#end()
" No need for rquire('lspconfig'), navigator will configure it for you
lua < | signature help |
| n | \ | signature help |
| n | gW | workspace symbol |
| n | gD | declaration |
| n | gd | definition |
| n | g0 | document symbol |
| n | \ | go to definition (if multiple show listview) |
| n | gp | definition preview (Go to Preview) |
| n | \ | definition |
| n | g\ | implementation |
| n | gT | treesitter document symbol |
| n | \gT | treesitter symbol for all open buffers |
| n | K | hover doc |
| n | \ca | code action (when you see 🏏 ) |
| n | \la | code lens action (when you see a codelens indicator) |
| v | \cA | range code action (when you see 🏏 ) |
| n | \rn | rename with floating window |
| n | \re | rename (lsp default) |
| n | \gi | hierarchy incoming calls |
| n | \go | hierarchy outgoing calls |
| n | gi | implementation |
| n | \ D | type definition |
| n | gL | show line diagnostic |
| n | gG | show diagnostic for all buffers |
| n | ]d | next diagnostic |
| n | [d | previous diagnostic |
| n | \ dt | diagnostic toggle(enable/disable) |
| n | ]r | next treesitter reference/usage |
| n | [r | previous treesitter reference/usage |
| n | \ wa | add workspace folder |
| n | \ wr | remove workspace folder |
| n | \ wl | print workspace folder |
| n | \k | toggle reference highlight |
| i/n | \ | previous item in list |
| i/n | \ | next item in list |
| i/n | number 1~9 | move to ith row/item in the list |
| i/n | \ | previous item in list |
| i/n | \ | next item in list |
| n | \j | move cursor to preview (windows move to bottom view point) |
| n | \k | move cursor to list (windows move to up view point) |
| i/n | \ | open preview file in nvim/Apply action |
| n | \ | open preview file in nvim with vsplit |
| n | \ | open preview file in nvim with split |
| n | \ | open preview file in nvim/Apply action |
| n | \ | close listview of floating window |
| i/n | \ | close listview of floating window |
| i/n | \ | previous page in listview |
| i/n | \ | next page in listview |
| i/n | \ | save the modification to preview window to file |
### Colors/Highlight:
You can override default highlight GHListDark (listview) and GHTextViewDark (code view) and GHListHl (select item)
e.g.
```vim
hi default GHTextViewDark guifg=#e0d8f4 guibg=#332e55
hi default GHListDark guifg=#e0d8f4 guibg=#103234
hi default GHListHl guifg=#e0d8f4 guibg=#404254
```
There are other Lsp highlight been used in this plugin, e.g LspReferenceRead/Text/Write are used for document highlight,
LspDiagnosticsXXX are used for diagnostic. Please check highlight.lua and dochighlight.lua for more info.
## Dependency
- lspconfig
- guihua.lua (provides floating window, FZY)
- Optional:
- treesitter (list treesitter symbols, object analysis)
- lsp-signature (better signature help)
The plugin can be loaded lazily (packer `opt = true` ), And it will check if optional plugins existance and load those plugins only if they existed.
The terminal will need to be able to output nerdfont and emoji correctly. I am using Kitty with nerdfont (Victor Mono).
## Integration with lsp_installer (williamboman/nvim-lsp-installer)
If you'd like to only use the lsp servers installed by lsp_installer. Please set
```lua
lsp_installer = true
```
In the config.
Navigator will startup the server installed by lsp-installer. Please do not call `server:setup{opts}` from lsp installer
as it will override the navigator setup
Also, could use following setups
```lua
require'navigator'.setup({
-- lsp_installer = false -- default value is false
lsp = {
tsserver = { cmd = {'your tsserver installed by lsp_installer'} }
}
})
```
example cmd setup (mac) for pyright :
```
cmd = { "/Users/username/.local/share/nvim/lsp_servers/python/node_modules/.bin/pyright-langserver", "--stdio" }
```
The lsp servers installed by nvim-lsp-installer is in following dir
```lua
local path = require 'nvim-lsp-installer.path'
local install_root_dir = path.concat {vim.fn.stdpath 'data', 'lsp_servers'}
```
And you can setup binary full path to this: (e.g. with gopls)
`install_root_dir .. '/go/gopls'`
## Usage
Please refer to lua/navigator/lspclient/mapping.lua on key mappings. Should be able to work out-of-box.
- Use \ or `:q!` to kill the floating window
- (or \, \) to move
- \ or \ to open location or apply code actions. Note: \ might be bound in insert mode by other plugins
## Configuration
In `navigator.lua` there is a default configuration. You can override the values by passing your own values
e.g
```lua
-- The attach will be call at end of navigator on_attach()
require'navigator'.setup({on_attach = function(client, bufnr) require 'illuminate'.on_attach(client)})
```
## Highlight
Highlight I am using:
- LspReferenceRead, LspReferenceText and LspReferenceWrite are used for `autocmd CursorHold lua vim.lsp.buf.document_highlight()`
That is where you saw the current symbol been highlighted.
- GHListDark and GHTextViewDark is used for floating listvew and TextView. They are be based on current background
(Normal) and PmenuSel
- In future, I will use NormalFloat for floating view. But ATM, most of colorscheme does not define NormalFloat
You can override the above highlight to fit your current colorscheme
## commands
| command | function |
| ------------ | ------------------------- |
| LspToggleFmt | toggle lsp auto format |
| LspKeymaps | show LSP releated keymaps |
## Screenshots
colorscheme: [aurora](https://github.com/ray-x/aurora)
### Reference
Pls check the first part of README
### Definition preview
Using treesitter and LSP to view the symbol definition
![image](https://user-images.githubusercontent.com/1681295/139771978-bbc970a5-be9f-42cf-8942-3477485bd89c.png)
### GUI and multigrid support
You can load a different font size for floating win
![multigrid2](https://user-images.githubusercontent.com/1681295/139196378-bf69ade9-c916-42a9-a91f-cccb39b9c4eb.jpg)
### Document Symbol
![document symbol](https://github.com/ray-x/files/blob/master/img/navigator/doc_symbol.gif?raw=true)
### Workspace Symbol
![workspace symbol](https://github.com/ray-x/files/blob/master/img/navigator/workspace_symbol.gif?raw=true)
### highlight document symbol and jump between reference
![multiple_symbol_hi3](https://user-images.githubusercontent.com/1681295/120067627-f9f80680-c0bf-11eb-9216-18e5c8547f59.gif)
# Current symbol highlight and jump backward/forward between symbols
Document highlight provided by LSP.
Jump between symbols with treesitter (with `]r` and `[r`)
![doc jump](https://github.com/ray-x/files/blob/master/img/navigator/doc_hl_jump.gif?raw=true)
### Diagnostic
Visual studio code style show errors minimap in scroll bar area
(Check setup for `diagnostic_scrollbar_sign`)
![diagnostic_scroll_bar](https://user-images.githubusercontent.com/1681295/128736430-e365523d-810c-4c16-a3b4-c74969f45f0b.jpg)
Diagnostic in single bufer
![diagnostic](https://github.com/ray-x/files/blob/master/img/navigator/diag.jpg?raw=true)
Show diagnostic in all buffers
![diagnostic multi files](https://github.com/ray-x/files/blob/master/img/navigator/diagnostic_multiplefiles.jpg?raw=true)
### Edit in preview window
You can in place edit your code in floating window
https://user-images.githubusercontent.com/1681295/121832919-89cbc080-cd0e-11eb-9778-11d0f356b38d.mov
(Note: This feature only avalible in `find reference` and `find diagnostic`, You can not add/remove lines in floating window)
### Implementation
![implementation](https://user-images.githubusercontent.com/1681295/118735346-967e0580-b883-11eb-8c1e-88c5810f7e05.jpg?raw=true)
### Fzy search in reference
![fzy_reference](https://github.com/ray-x/files/blob/master/img/navigator/fzy_reference.jpg?raw=true)
### Code actions
![code actions](https://github.com/ray-x/files/blob/master/img/navigator/codeaction.jpg?raw=true)
### Symbol rename
![rename](https://user-images.githubusercontent.com/1681295/141081135-55f45c2d-28c6-4475-a083-e37dfabe9afd.jpg)
#### Fill struct with gopls
![code actions fill struct](https://github.com/ray-x/files/blob/master/img/navigator/fill_struct.gif?raw=true)
### Code preview with highlight
![treesitter_preview](https://user-images.githubusercontent.com/1681295/118900852-4bccbe00-b955-11eb-82f6-0747b1b64e7c.jpg)
### Treesitter symbol
Treetsitter symbols in all buffers
![treesitter](https://user-images.githubusercontent.com/1681295/118734953-cc6eba00-b882-11eb-9db8-0a052630d57e.jpg?raw=true)
### Signature help
Improved signature help with current parameter highlighted
![signature](https://github.com/ray-x/files/blob/master/img/navigator/signature_with_highlight.jpg?raw=true)
![show_signature](https://github.com/ray-x/files/blob/master/img/navigator/show_signnature.gif?raw=true "show_signature")
### Call hierarchy (incomming/outgoing calls)
![incomming_calls](https://user-images.githubusercontent.com/1681295/142348079-49b71486-4f16-4f10-95c9-483aad11c262.jpg)
### Light bulb if codeAction available
![lightbulb](https://github.com/ray-x/files/blob/master/img/navigator/lightbulb.jpg?raw=true)
### Codelens
Codelens for gopls/golang. Garbage collection analyse:
![codelens](https://user-images.githubusercontent.com/1681295/132428956-7835bf30-2ed5-4871-b2d7-7fbad22f63e8.jpg)
Codelens for C++/ccls. Symbol reference
![codelens_cpp_ccls](https://user-images.githubusercontent.com/1681295/132429134-abc6547e-79cc-44a4-b7a9-23550b895e51.jpg)
### Predefined LSP symbol nerdfont/emoji
![nerdfont](https://github.com/ray-x/files/blob/master/img/navigator/icon_nerd.jpg?raw=true)
# Debug the plugin
One simple way to gether debug info and understand what is wrong is output the debug logs
```lua
require'navigator'.setup({
debug = false, -- log output, set to true and log path: ~/.local/share/nvim/gh.log
})
```
```lua
-- a example of adding logs in the plugin
local log = require"navigator.util".log
local definition_hdlr = util.mk_handler(function(err, locations, ctx, _)
-- output your log
log('[definition] log for locations', locations, "and ctx", ctx)
if err ~= nil then
return
end
end
```
# Break changes and known issues
[known issues I am working on](https://github.com/ray-x/navigator.lua/issues/1)
# Todo
- The project is in the early phase, bugs expected, PRs and suggestions are welcome
- Async (some of the requests is slow on large codebases and might be good to use co-rountine)
- More clients. I use go, python, js/ts, java, c/cpp, lua most of the time. Did not test other languages (e.g dart, swift etc)
- Configuration options
# Errors and Bug Reporting
- Please double check your setup and check if minium setup works or not
- It should works for 0.5.1, neovim 0.6.x prefered.
- Check console output
- Check `LspInfo` and treesitter status with `checkhealth`
- Turn on log and attach the log to your issue if possible you can remove any personal/company info in the log