mirror of https://github.com/ray-x/go.nvim
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668 lines
25 KiB
Markdown
# go.nvim
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A modern go neovim plugin based on treesitter, nvim-lsp and dap debugger. It is written in Lua and async as much as possible.
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PR & Suggestions welcome.
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The plugin covers most features required for a gopher.
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- Async jobs with libuv
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- Syntax highlight & Texobject: Native treesitter support is faster and more accurate. All you need is a theme support treesitter, try
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[aurora](https://github.com/ray-x/aurora). Also, there are quite a few listed in [awesome-neovim](https://github.com/rockerBOO/awesome-neovim)
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- All the GoToXxx (E.g reference, implementation, definition, goto doc, peek code/doc etc) You need lspconfig setup. There are lots of posts on how to
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set it up. You can also check my [navigator](https://github.com/ray-x/navigator.lua) gopls setup [lspconfig.lua](https://github.com/ray-x/navigator.lua/blob/master/lua/navigator/lspclient/clients.lua)
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- Runtime lint/vet/compile: Supported by lsp (once you setup up your lsp client), GoLint with golangci-lint also supported
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- Build/Make/Test: Go.nvim provides supports for these by an async job wrapper.
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- Test coverage: run test coverage and show coverage sign
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- Dlv Debug: with [nvim-dap](https://github.com/mfussenegger/nvim-dap) and [Dap UI](https://github.com/rcarriga/nvim-dap-ui).
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- Load vscode launch configuration
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- Unit test: generate unit test framework with [gotests](https://github.com/cweill/gotests). Run test with
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richgo/ginkgo/go test
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- tag modify: Supports gomodifytags
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- Code format: Supports LSP format and GoFmt
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- CodeLens : gopls codelens and codelens action support
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- Comments: Add autodocument for your package/function/struct/interface. This feature is unique and can help you suppress golint
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errors...
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- Go to alternative go file (between test and source)
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- Test with ginkgo, richgo inside floaterm (to enable floaterm, guihua.lua has to be installed)
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- Go 1.18beta1 support, configure your go to `go1.18beta1` in config
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## Installation
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Use your favorite package manager to install. The dependency `treesitter` (and optionally, treesitter-objects)
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will be installed the first time you use it.
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### [vim-plug](https://github.com/junegunn/vim-plug)
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```vim
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Plug 'ray-x/go.nvim'
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```
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### [packer.nvim](https://github.com/wbthomason/packer.nvim)
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```lua
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use 'ray-x/go.nvim'
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```
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Make sure the `$GOPATH/bin` path is added to your `$PATH` environment variable. To check this you can run
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```bash
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echo $PATH | grep "$GOPATH/bin"
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```
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If nothing shows up, you can add the following to your shell config file:
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```bash
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export PATH=$PATH:$GOPATH/bin
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```
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Add format in your vimrc.
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```vim
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autocmd BufWritePre *.go :silent! lua require('go.format').gofmt()
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```
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To startup/setup the plugin
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```lua
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require('go').setup()
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```
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## Screenshots
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### Add comments
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![auto comments](https://github.com/ray-x/files/blob/master/img/go.nvim/comment.gif?raw=true)
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### Add/Remove tags
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![auto tag](https://github.com/ray-x/files/blob/master/img/go.nvim/tags.gif?raw=true)
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### GoTest in floating term
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![gotest](https://user-images.githubusercontent.com/1681295/143160335-b8046ffa-82cd-4d84-af3e-3b0dbb4c609e.png)
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## refactor gorename
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gorename as an alternative to gopls rename as it supports rename across packages
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Command: GoRename
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## code format
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nvim-lsp support goimport by default.
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```vim
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autocmd BufWritePre (InsertLeave?) <buffer> lua vim.lsp.buf.formatting_sync(nil,500)
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```
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The plugin provides code format, by default is goline + gofumpt (stricter version of gofmt)
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Use following code to format go code
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```lua
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require("go.format").gofmt() -- gofmt only
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require("go.format").goimport() -- goimport + gofmt
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```
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### Format on save
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To config format on save, add one of the following to your init.lua:
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#### Run gofmt on save
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```lua
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-- Run gofmt on save
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vim.api.nvim_exec([[ autocmd BufWritePre *.go :silent! lua require('go.format').gofmt() ]], false)
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```
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#### Run gofmt + goimport on save
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```lua
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-- Run gofmt + goimport on save
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vim.api.nvim_exec([[ autocmd BufWritePre *.go :silent! lua require('go.format').goimport() ]], false)
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```
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## Auto fill
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Note: auto fill struct also supported by gopls lsp-action
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| command | Description |
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| ------------ | ------------------------------------------------------------- |
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| GoFillStruct | auto fill struct |
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| GoFillSwitch | fill switch |
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| GoIfErr | Add if err |
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| GoFixPlurals | change func foo(b int, a int, r int) -> func foo(b, a, r int) |
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```go
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package foo
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import "io"
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func Foo() (io.Reader, error) { // the cursor on this line to add if err statement
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}
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```
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![auto struct](https://github.com/ray-x/files/blob/master/img/go.nvim/fstruct.gif?raw=true)
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## Textobject
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Supported by treesitter. TS provided better parse result compared to regular expression.
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See the example [treesitter config file](https://github.com/ray-x/go.nvim#text-object) on how to setup
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textobjects. Also with treesitter-objects, you can move, swap the selected blocks of codes, which is fast and accurate.
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## Go binaries install and update
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The following go binaries are used in `go.nvim` (depends on your setup):
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- gofumpt
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- golines
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- goimports
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- gorename
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- gomodifytags
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- gotests
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- iferr
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- impl
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- fillstruct
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- fixplurals
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- fillswitch
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- dlv
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- ginkgo
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- richgo
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Normally if you run `GoFmt` and the configured binary (e.g. golines) was not installed, the plugin will install it for you. But the
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first run of `GoFmt` may fail. It is recommended to run `GoInstallBinaries` to install all binaries before using the plugin.
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| command | Description |
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| ------------------------------ | ------------------------------------------------------------------------------------------------------------------- |
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| GoInstallBinary go_binary_name | use `go install go_binary_url@latest` to install tool, if installed will skip |
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| GoUpdateBinary go_binary_name | use `go install go_binary_url@latest` Will force re-install if already installed, otherwise same as GoInstallBinary |
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| GoInstallBinaries | use `go install` to install all tools, skip the ones installed |
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| GoUpdateBinaries | use `go install` to update all tools to the latest version |
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## Build and test
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| command | Description |
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| --------------------------------------------- | ------------------------------------------------------------------------ |
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| GoMake | make |
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| GoBuild | |
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| GoGenerate | |
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| GoRun | e.g. GoRun equal to `go run .`; or `GoRun ./cmd` equal to `go run ./cmd` |
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| GoStop {job_id} | `stop the job started with GoRun |
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| GoTest | go test ./... |
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| GoTest -c | go test -c current_file_path |
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| GoTest -tags=yourtags | go test ./... -tags=yourtags |
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| GoTest package_path -tags=yourtags | go test packagepath -tags=yourtags |
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| GoTest package_path -tags=yourtags other_args | go test packagepath -tags=yourtags other_args |
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| GoLint | golangci-lint |
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| GoGet package_url | go get package_url |
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| GoVet | go vet |
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| GoCoverage | go test -coverprofile |
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Show test coverage:
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<img width="479" alt="GoTestCoverage" src="https://user-images.githubusercontent.com/1681295/130821038-fa2545c6-16f6-4448-9a0c-91a1ab333750.png">
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Provided wrapper for gobulild/test etc with async make
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Also suggest to use [vim-test](https://github.com/vim-test/vim-test), which can run running tests on different
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granularities.
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## Unit test with [gotests](https://github.com/cweill/gotests) and testify
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Support table based unit test auto generate, parse current function/method name using treesitter
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| command | Description |
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| ------------------------ | ------------------------------------------------------- |
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| GoTestFunc | run test for current func |
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| GoTestFunc -tags=yourtag | run test for current func with `-tags yourtag` option |
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| GoTestFile | run test for current file |
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| GoTestFile -tags=yourtag | run test for current folder with `-tags yourtag` option |
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| GoTestPkg | run test for current package/folder |
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| GoTestPkg -tags=yourtag | run test for current folder with `-tags yourtag` option |
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| GoAddTest | |
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| GoAddExpTest | Add tests for exported funcs |
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| GoAddAllTest | Add tests for all funcs |
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Note: For GoTestXXX
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You can add avaliable arguments e.g. `GoTest -tags=integration ./internal/web -bench=. -count=1 -`
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## GoDoc
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Show go doc for api in neovim floating window. e.g. `GoDoc fmt.Println`
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![Godoc](https://user-images.githubusercontent.com/1681295/133886804-cc110fae-6fbf-4218-9c22-07fc9d6a64d2.jpg)
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If no argument provided, fallback to lsp.hover()
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## Modifytags
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Modify struct tags by [`gomodifytags`](https://github.com/fatih/gomodifytags) and treesitter
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| command | Description |
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| ---------- | ----------- |
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| GoAddTag | |
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| GoRmTag | |
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| GoClearTag | |
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## GoFmt
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nvim-lsp support goimport by default. The plugin provided a new formatter, goline + gofumpt (stricter version of
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gofmt)
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| command | Description |
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| -------- | --------------------------- |
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| GoFmt | goline + gofumpt |
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| GoImport | goline + goimport + gofumpt |
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## GoImpl
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generate method stubs for implementing an interface
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Usage:
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````
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:GoImpl {receiver} {interface}
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Also you can put cursor on struct and run
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```vim
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:GoImpl {interface}
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````
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e.g:
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```
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:GoImpl f *File io.Reader
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```
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## Debug
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| command | Description |
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| ---------------- | ------------------------------------------------ |
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| GoDebug | start debug session |
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| GoDebug test | start debug session for go test file |
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| GoDebug restart | restart debug session for go test file |
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| GoDebug nearest | start debug session for nearest go test function |
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| GoDebug file | same as GoDebug |
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| GoDebug stop | stop debug session and unmap debug keymap |
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| GoBreakToggle | |
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| GoBreakCondition | conditional break |
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## Switch between go and test file
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| command | Description |
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| ---------------- | ------------------------------------------------------- |
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| GoAlt / GoAlt! | open alternative go file (use ! to create if not exist) |
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| GoAltS / GoAltS! | open alternative go file in split |
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| GoAltV / GoAltV! | open alternative go file in vertical split |
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## Comments and Doc
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Auto doc (to suppress golang-lint warning), generate comments by treesitter parsing result
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```go
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type GoLintComplaining struct{}
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```
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And run
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```lua
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lua.require('go.comment').gen() -- or your faviourite key binding and setup placeholder "no more complaint ;P"
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```
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The code will be:
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```go
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// GoLintComplaining struct no more complaint ;P
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type GoLintComplaining struct{}
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```
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## GoModeTidy
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## LSP
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Nvim-lsp is good enough for a gopher. If you looking for a better GUI. You can install
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[navigator](https://github.com/ray-x/navigator.lua), or lspsaga, and lsp-utils etc.
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The goal of go.nvim is more provide unique functions releated to gopls instead of a general lsp gui client.
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The lsp config in go.nvim has a none default setup and contains some improvement and I would suggest you to use.
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## LSP CodeLens
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Gopls supports code lens. To run gopls code lens action `GoCodeLenAct`
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Note: codelens need to be enabled in gopls, check default config in
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## LSP CodeActions
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You can use native code action provided by lspconfig. If you installed guihua, you can also use a GUI version of
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code action `GoCodeAction`
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## Lint
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Supported by LSP, also GoLint command (by calling golangcl-lint) if you need background golangci-lint check, you can
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configure it with ALE
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## Debug with dlv
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Setup for Debug provided. Need Dap and Dap UI plugin
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![dap](https://user-images.githubusercontent.com/1681295/125160289-743ba080-e1bf-11eb-804f-6a6d227ec33b.jpg)
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GDB style key mapping is used
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### Keymaps
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| key | Description |
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| --- | ---------------------------------------- |
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| c | continue |
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| n | next |
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| s | step |
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| o | stepout |
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| S | cap S: stop debug |
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| u | up |
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| D | cap D: down |
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| C | cap C: run to cursor |
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| b | toggle breakpoint |
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| P | cap P: pause |
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| p | print, hover value (also in visual mode) |
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### Moving from vscode-go debug
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Please check [Vscode Launch configurations](https://code.visualstudio.com/docs/editor/debugging#_launch-configurations)
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for more info
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go.nvim support launch debuger from vscode-go .vscode/launch.json configurations
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If launch.json is valid, run `GoDebug` will launch from the launch.json configuration.
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#### Note:
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Please use jsonls/null-ls check your launch.json is valid json file. Following syntax is not supported
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- Trailing comma
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- Comment
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Here is a sample [launch.json](https://github.com/ray-x/go.nvim/blob/master/playground/sampleApp/.vscode/launch.json)
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### Commands
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| Command | Description |
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| -------------- | ----------------------------------------------------------------------------------------------- |
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| GoDebug | Start debugger, to debug test, run `GoDebug test`, to add addition args run `GoDebug arg1 arg2` |
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| GoDebugConfig | Open launch.json file |
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| GoBreakToggle | toggle break point |
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| BreakCondition | conditional break point |
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| ReplRun | dap repl run_last |
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| ReplToggle | dap repl toggle |
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### Required DAP plugins
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The plugin will setup debugger. But you need to install
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- dap
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- 'mfussenegger/nvim-dap'
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- dap ui (optional)
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- 'rcarriga/nvim-dap-ui'
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- dap virtual text (optional)
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- 'theHamsta/nvim-dap-virtual-text'
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Also you can check telescope dap extension : nvim-telescope/telescope-dap.nvim
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Sample vimrc for DAP
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```viml
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Plug 'mfussenegger/nvim-dap'
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Plug 'rcarriga/nvim-dap-ui'
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Plug 'theHamsta/nvim-dap-virtual-text'
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" Plug 'nvim-telescope/telescope-dap.nvim'
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```
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## Commands
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Check [go.lua](https://github.com/ray-x/go.nvim/blob/master/lua/go.lua) on all the commands provided
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## configuration
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Configure from lua suggested, The default setup:
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```lua
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require('go').setup({
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go='go', -- go command, can be go[default] or go1.18beta1
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goimport='gopls', -- goimport command, can be gopls[default] or goimport
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fillstruct = 'gopls', -- can be nil (use fillstruct, slower) and gopls
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gofmt = 'gofumpt', --gofmt cmd,
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max_line_len = 120, -- max line length in goline format
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tag_transform = false, -- tag_transfer check gomodifytags for details
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test_template = '', -- default to testify if not set; g:go_nvim_tests_template check gotests for details
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test_template_dir = '', -- default to nil if not set; g:go_nvim_tests_template_dir check gotests for details
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comment_placeholder = '' , -- comment_placeholder your cool placeholder e.g. ﳑ
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icons = {breakpoint = '🧘', currentpos = '🏃'},
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verbose = false, -- output loginf in messages
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lsp_cfg = false, -- true: use non-default gopls setup specified in go/lsp.lua
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-- false: do nothing
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-- if lsp_cfg is a table, merge table with with non-default gopls setup in go/lsp.lua, e.g.
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-- lsp_cfg = {settings={gopls={matcher='CaseInsensitive', ['local'] = 'your_local_module_path', gofumpt = true }}}
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lsp_gofumpt = false, -- true: set default gofmt in gopls format to gofumpt
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lsp_on_attach = nil, -- nil: use on_attach function defined in go/lsp.lua,
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-- when lsp_cfg is true
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-- if lsp_on_attach is a function: use this function as on_attach function for gopls
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lsp_codelens = true, -- set to false to disable codelens, true by default
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lsp_diag_hdlr = true, -- hook lsp diag handler
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lsp_document_formatting = true,
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-- set to true: use gopls to format
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-- false if you want to use other formatter tool(e.g. efm, nulls)
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gopls_cmd = nil, -- if you need to specify gopls path and cmd, e.g {"/home/user/lsp/gopls", "-logfile","/var/log/gopls.log" }
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gopls_remote_auto = true, -- add -remote=auto to gopls
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dap_debug = true, -- set to false to disable dap
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dap_debug_keymap = true, -- true: use keymap for debugger defined in go/dap.lua
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-- false: do not use keymap in go/dap.lua. you must define your own.
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dap_debug_gui = true, -- set to true to enable dap gui, highly recommand
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dap_debug_vt = true, -- set to true to enable dap virtual text
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build_tags = "tag1,tag2", -- set default build tags
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textobjects = true, -- enable default text jobects through treesittter-text-objects
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test_runner = 'go', -- richgo, go test, richgo, dlv, ginkgo
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run_in_floaterm = false, -- set to true to run in float window.
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--float term recommand if you use richgo/ginkgo with terminal color
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})
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```
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You will need to add keybind yourself:
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e.g
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```lua
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vim.cmd("autocmd FileType go nmap <Leader><Leader>l GoLint")
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vim.cmd("autocmd FileType go nmap <Leader>gc :lua require('go.comment').gen()")
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```
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## Text object
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I did not provide textobject support in the plugin. Please use treesitter textobject plugin.
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My treesitter config:
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```lua
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require "nvim-treesitter.configs".setup {
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incremental_selection = {
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enable = enable,
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keymaps = {
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-- mappings for incremental selection (visual mappings)
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init_selection = "gnn", -- maps in normal mode to init the node/scope selection
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node_incremental = "grn", -- increment to the upper named parent
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scope_incremental = "grc", -- increment to the upper scope (as defined in locals.scm)
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node_decremental = "grm" -- decrement to the previous node
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}
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},
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textobjects = {
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-- syntax-aware textobjects
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enable = enable,
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lsp_interop = {
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enable = enable,
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peek_definition_code = {
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["DF"] = "@function.outer",
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["DF"] = "@class.outer"
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}
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},
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keymaps = {
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["iL"] = {
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-- you can define your own textobjects directly here
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go = "(function_definition) @function",
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},
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-- or you use the queries from supported languages with textobjects.scm
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["af"] = "@function.outer",
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["if"] = "@function.inner",
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["aC"] = "@class.outer",
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["iC"] = "@class.inner",
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["ac"] = "@conditional.outer",
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["ic"] = "@conditional.inner",
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["ae"] = "@block.outer",
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["ie"] = "@block.inner",
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["al"] = "@loop.outer",
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["il"] = "@loop.inner",
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["is"] = "@statement.inner",
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["as"] = "@statement.outer",
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["ad"] = "@comment.outer",
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["am"] = "@call.outer",
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["im"] = "@call.inner"
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},
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move = {
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enable = enable,
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set_jumps = true, -- whether to set jumps in the jumplist
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goto_next_start = {
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["]m"] = "@function.outer",
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["]]"] = "@class.outer"
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},
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goto_next_end = {
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["]M"] = "@function.outer",
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["]["] = "@class.outer"
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},
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goto_previous_start = {
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["[m"] = "@function.outer",
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["[["] = "@class.outer"
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},
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goto_previous_end = {
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["[M"] = "@function.outer",
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["[]"] = "@class.outer"
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}
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},
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select = {
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enable = enable,
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keymaps = {
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-- You can use the capture groups defined in textobjects.scm
|
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["af"] = "@function.outer",
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["if"] = "@function.inner",
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["ac"] = "@class.outer",
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["ic"] = "@class.inner",
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-- Or you can define your own textobjects like this
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["iF"] = {
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python = "(function_definition) @function",
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cpp = "(function_definition) @function",
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c = "(function_definition) @function",
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java = "(method_declaration) @function",
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go = "(method_declaration) @function"
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}
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}
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},
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swap = {
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enable = enable,
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swap_next = {
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["<leader>a"] = "@parameter.inner"
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},
|
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swap_previous = {
|
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["<leader>A"] = "@parameter.inner"
|
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}
|
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}
|
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}
|
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}
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```
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|
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## Nvim LSP setup
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go.nvim provided a better non-default setup for gopls (includes debounce, staticcheck, diagnosticsDelay etc)
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|
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This gopls setup provided by go.nvim works perfectly fine for most of the cases. You can also install [navigator.lua](https://github.com/ray-x/navigator.lua) which can auto setup all lsp clients and provides a better GUI.
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For diagnostic issue, you can use the default setup. There are also quite a few plugins that you can use to explore issues, e.g. [navigator.lua](https://github.com/ray-x/navigator.lua), [folke/lsp-trouble.nvim](https://github.com/folke/lsp-trouble.nvim). [Nvim-tree](https://github.com/kyazdani42/nvim-tree.lua) and [Bufferline](https://github.com/akinsho/nvim-bufferline.lua) also introduced lsp diagnostic hooks.
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|
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## Integrate with nvim-lsp-installer
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|
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(suggested by @mattbailey)
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|
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```lua
|
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local path = require 'nvim-lsp-installer.path'
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local install_root_dir = path.concat {vim.fn.stdpath 'data', 'lsp_servers'}
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|
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require('go').setup({
|
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gopls_cmd = {install_root_dir .. '/go/gopls'},
|
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filstruct = 'gopls',
|
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dap_debug = true,
|
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dap_debug_gui = true
|
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})
|
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```
|
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|
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If you want to use gopls setup provided by go.nvim
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|
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```lua
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|
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-- setup your go.nvim
|
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-- make sure lsp_cfg is disabled
|
|
require('go').setup{...}
|
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|
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local lsp_installer_servers = require'nvim-lsp-installer.servers'
|
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|
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local server_available, requested_server = lsp_installer_servers.get_server("gopls")
|
|
if server_available then
|
|
requested_server:on_ready(function ()
|
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local opts = require'go.lsp'.config() -- config() return the go.nvim gopls setup
|
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requested_server:setup(opts)
|
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end)
|
|
if not requested_server:is_installed() then
|
|
-- Queue the server to be installed
|
|
requested_server:install()
|
|
end
|
|
end
|
|
|
|
|
|
```
|
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|
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## Sample vimrc
|
|
|
|
The following vimrc will enable all features provided by go.nvim
|
|
|
|
```viml
|
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set termguicolors
|
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call plug#begin('~/.vim/plugged')
|
|
Plug 'neovim/nvim-lspconfig'
|
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Plug 'nvim-treesitter/nvim-treesitter'
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|
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Plug 'mfussenegger/nvim-dap'
|
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Plug 'rcarriga/nvim-dap-ui'
|
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Plug 'theHamsta/nvim-dap-virtual-text'
|
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Plug 'ray-x/guihua.lua' " float term, codeaction and codelens gui support
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|
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Plug 'ray-x/go.nvim'
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|
|
call plug#end()
|
|
|
|
lua <<EOF
|
|
require 'go'.setup({
|
|
goimport = 'gopls', -- if set to 'gopls' will use golsp format
|
|
gofmt = 'gopls', -- if set to gopls will use golsp format
|
|
max_line_len = 120,
|
|
tag_transform = false,
|
|
test_dir = '',
|
|
comment_placeholder = ' ',
|
|
lsp_cfg = true, -- false: use your own lspconfig
|
|
lsp_gofumpt = true, -- true: set default gofmt in gopls format to gofumpt
|
|
lsp_on_attach = true, -- use on_attach from go.nvim
|
|
dap_debug = true,
|
|
})
|
|
|
|
local protocol = require'vim.lsp.protocol'
|
|
|
|
EOF
|
|
```
|
|
|
|
This will setup gopls with non default configure provided by go.nvim (Includes lspconfig default keymaps)
|
|
|
|
Q & A:
|
|
Q: What is `Toggle gc annotation details`
|
|
A: This is a codelens message, please run codelens `GoCodeLenAct` and get more info
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