feat(lang#go): add lsp support for golang

autoload/SpaceVim/layers/lang/go.vim

@@ -9,7 +9,16 @@
 ""
 " @section lang#go, layers-lang-go
 " @parentsection layers
-" This layer includes code completion and syntax checking for Go development.
+" The `lang#go` layer includes code completion and syntax checking for
+" Go development. This layer is not enabled by default, to enable it:
+" >
+"   [[layers]]
+"     name = 'go'
+" <
+" @subsection layer options
+" 1. `enabled_linters`: set a list of enabled lint for golang. by default this
+" option is `['golint']`. The available linters includes: `go`,
+" `gometalinter`
 "
 " @subsection Mappings
 " >
@@ -38,6 +47,20 @@
 "   normal          SPC l v         freevars
 "   normal          SPC l r         go run
 " <
+" If the lsp layer is enabled for go, the following key bindings can
+" be used:
+" >
+"   key binding     Description
+"   g D             jump to type definition
+"   SPC l e         rename symbol
+"   SPC l x         show references
+"   SPC l s         show line diagnostics
+"   SPC l d         show document
+"   K               show document
+"   SPC l w l       list workspace folder
+"   SPC l w a       add workspace folder
+"   SPC l w r       remove workspace folder
+" <
 
 
 function! SpaceVim#layers#lang#go#plugins() abort
@@ -58,6 +81,9 @@ function! SpaceVim#layers#lang#go#config() abort
   let g:go_fmt_command = 'gopls'
   let g:syntastic_go_checkers = ['golint', 'govet']
   let g:syntastic_mode_map = { 'mode': 'active', 'passive_filetypes': ['go'] }
+  " neomake config:
+  let g:neomake_go_gometalinter_remove_invalid_entries = 1
+  let g:neomake_go_go_remove_invalid_entries = 1
   let g:neomake_go_gometalinter_args = ['--disable-all']
   let g:go_snippet_engine = 'neosnippet'
   let g:go_rename_command = 'gopls'
@@ -73,7 +99,12 @@ function! SpaceVim#layers#lang#go#config() abort
 endfunction
 
 function! s:go_to_def() abort
+  if SpaceVim#layers#lsp#check_filetype('go')
+        \ || SpaceVim#layers#lsp#check_server('gopls')
+    call SpaceVim#lsp#go_to_def()
+  else
     call go#def#Jump('', 0)
+  endif
 endfunction
 
 function! s:language_specified_mappings() abort
@@ -145,6 +176,27 @@ function! s:language_specified_mappings() abort
         \ ':GoFreevars',
         \ 'freevars', 1)
   call SpaceVim#mapping#space#langSPC('nmap', ['l','r'], 'call SpaceVim#plugins#runner#open()', 'execute current file', 1)
+  if SpaceVim#layers#lsp#check_filetype('go')
+        \ || SpaceVim#layers#lsp#check_server('gopls')
+    nnoremap <silent><buffer> K :call SpaceVim#lsp#show_doc()<CR>
+    nnoremap <silent><buffer> gD :<C-u>call SpaceVim#lsp#go_to_typedef()<Cr>
+
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'd'],
+          \ 'call SpaceVim#lsp#show_doc()', 'show-document', 1)
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'x'],
+          \ 'call SpaceVim#lsp#references()', 'show-references', 1)
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'e'],
+          \ 'call SpaceVim#lsp#rename()', 'rename-symbol', 1)
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 's'],
+          \ 'call SpaceVim#lsp#show_line_diagnostics()', 'show-line-diagnostics', 1)
+    let g:_spacevim_mappings_space.l.w = {'name' : '+Workspace'}
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'w', 'l'],
+          \ 'call SpaceVim#lsp#list_workspace_folder()', 'list-workspace-folder', 1)
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'w', 'a'],
+          \ 'call SpaceVim#lsp#add_workspace_folder()', 'add-workspace-folder', 1)
+    call SpaceVim#mapping#space#langSPC('nnoremap', ['l', 'w', 'r'],
+          \ 'call SpaceVim#lsp#remove_workspace_folder()', 'remove-workspace-folder', 1)
+  endif
 endfunction
 
 function! SpaceVim#layers#lang#go#health() abort

doc/SpaceVim.txt

@@ -2407,7 +2407,15 @@ This layer also provides REPL support for goby, the key bindings are:
 ==============================================================================
 LANG#GO                                              *SpaceVim-layers-lang-go*
 
-This layer includes code completion and syntax checking for Go development.
+The `lang#go` layer includes code completion and syntax checking for Go
+development. This layer is not enabled by default, to enable it:
+>
+  [[layers]]
+    name = 'go'
+<
+LAYER OPTIONS
+  1. `enabled_linters`: set a list of enabled lint for golang. by default this
+option is `['golint']`. The available linters includes: `go`, `gometalinter`
 
 MAPPINGS
 
@@ -2437,6 +2445,19 @@ MAPPINGS
   normal          SPC l v         freevars
   normal          SPC l r         go run
 <
+If the lsp layer is enabled for go, the following key bindings can be used:
+>
+  key binding     Description
+  g D             jump to type definition
+  SPC l e         rename symbol
+  SPC l x         show references
+  SPC l s         show line diagnostics
+  SPC l d         show document
+  K               show document
+  SPC l w l       list workspace folder
+  SPC l w a       add workspace folder
+  SPC l w r       remove workspace folder
+<
 
 ==============================================================================
 LANG#GOBY                                          *SpaceVim-layers-lang-goby*