317 lines
9.5 KiB
VimL
317 lines
9.5 KiB
VimL
" install necessary Go tools
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if exists("g:go_loaded_install")
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finish
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endif
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let g:go_loaded_install = 1
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function! s:checkVersion() abort
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" Not using the has('patch-7.4.2009') syntax because that wasn't added until
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" 7.4.237, and we want to be sure this works for everyone (this is also why
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" we're not using utils#EchoError()).
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"
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" Version 7.4.2009 was chosen because that's greater than what the most recent Ubuntu LTS
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" release (16.04) uses and has a couple of features we need (e.g. execute()
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" and :message clear).
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let l:unsupported = 0
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if go#config#VersionWarning() != 0
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if has('nvim')
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let l:unsupported = !has('nvim-0.3.1')
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else
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let l:unsupported = (v:version < 704 || (v:version == 704 && !has('patch2009')))
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endif
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if l:unsupported == 1
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echohl Error
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echom "vim-go requires Vim 7.4.2009 or Neovim 0.3.1, but you're using an older version."
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echom "Please update your Vim for the best vim-go experience."
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echom "If you really want to continue you can set this to make the error go away:"
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echom " let g:go_version_warning = 0"
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echom "Note that some features may error out or behave incorrectly."
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echom "Please do not report bugs unless you're using Vim 7.4.2009 or newer or Neovim 0.3.1."
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echohl None
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" Make sure people see this.
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sleep 2
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endif
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endif
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endfunction
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call s:checkVersion()
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" these packages are used by vim-go and can be automatically installed if
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" needed by the user with GoInstallBinaries.
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let s:packages = {
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\ 'asmfmt': ['github.com/klauspost/asmfmt/cmd/asmfmt'],
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\ 'dlv': ['github.com/derekparker/delve/cmd/dlv'],
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\ 'errcheck': ['github.com/kisielk/errcheck'],
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\ 'fillstruct': ['github.com/davidrjenni/reftools/cmd/fillstruct'],
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\ 'gocode': ['github.com/mdempsky/gocode', {'windows': ['-ldflags', '-H=windowsgui']}],
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\ 'godef': ['github.com/rogpeppe/godef'],
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\ 'gogetdoc': ['github.com/zmb3/gogetdoc'],
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\ 'goimports': ['golang.org/x/tools/cmd/goimports'],
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\ 'golint': ['github.com/golang/lint/golint'],
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\ 'gometalinter': ['github.com/alecthomas/gometalinter'],
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\ 'gomodifytags': ['github.com/fatih/gomodifytags'],
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\ 'gorename': ['golang.org/x/tools/cmd/gorename'],
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\ 'gotags': ['github.com/jstemmer/gotags'],
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\ 'guru': ['golang.org/x/tools/cmd/guru'],
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\ 'impl': ['github.com/josharian/impl'],
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\ 'keyify': ['honnef.co/go/tools/cmd/keyify'],
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\ 'motion': ['github.com/fatih/motion'],
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\ 'iferr': ['github.com/koron/iferr'],
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\ }
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" These commands are available on any filetypes
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command! -nargs=* -complete=customlist,s:complete GoInstallBinaries call s:GoInstallBinaries(-1, <f-args>)
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command! -nargs=* -complete=customlist,s:complete GoUpdateBinaries call s:GoInstallBinaries(1, <f-args>)
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command! -nargs=? -complete=dir GoPath call go#path#GoPath(<f-args>)
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fun! s:complete(lead, cmdline, cursor)
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return filter(keys(s:packages), 'strpart(v:val, 0, len(a:lead)) == a:lead')
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endfun
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" GoInstallBinaries downloads and installs binaries defined in s:packages to
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" $GOBIN or $GOPATH/bin. GoInstallBinaries will update already installed
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" binaries only if updateBinaries = 1. By default, all packages in s:packages
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" will be installed, but the set can be limited by passing the desired
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" packages in the unnamed arguments.
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function! s:GoInstallBinaries(updateBinaries, ...)
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let err = s:CheckBinaries()
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if err != 0
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return
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endif
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if go#path#Default() == ""
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echohl Error
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echomsg "vim.go: $GOPATH is not set and 'go env GOPATH' returns empty"
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echohl None
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return
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endif
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let go_bin_path = go#path#BinPath()
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" change $GOBIN so go get can automatically install to it
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let $GOBIN = go_bin_path
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" old_path is used to restore users own path
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let old_path = $PATH
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" vim's executable path is looking in PATH so add our go_bin path to it
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let $PATH = go_bin_path . go#util#PathListSep() . $PATH
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" when shellslash is set on MS-* systems, shellescape puts single quotes
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" around the output string. cmd on Windows does not handle single quotes
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" correctly. Unsetting shellslash forces shellescape to use double quotes
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" instead.
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let resetshellslash = 0
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if has('win32') && &shellslash
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let resetshellslash = 1
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set noshellslash
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endif
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let l:dl_cmd = ['go', 'get', '-v', '-d']
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if get(g:, "go_get_update", 1) != 0
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let l:dl_cmd += ['-u']
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endif
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" Filter packages from arguments (if any).
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let l:packages = {}
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if a:0 > 0
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for l:bin in a:000
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let l:pkg = get(s:packages, l:bin, [])
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if len(l:pkg) == 0
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call go#util#EchoError('unknown binary: ' . l:bin)
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return
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endif
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let l:packages[l:bin] = l:pkg
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endfor
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else
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let l:packages = s:packages
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endif
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let l:platform = ''
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if go#util#IsWin()
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let l:platform = 'windows'
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endif
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for [binary, pkg] in items(l:packages)
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let l:importPath = pkg[0]
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let l:run_cmd = copy(l:dl_cmd)
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if len(l:pkg) > 1 && get(l:pkg[1], l:platform, '') isnot ''
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let l:run_cmd += get(l:pkg[1], l:platform, '')
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endif
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let bin_setting_name = "go_" . binary . "_bin"
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if exists("g:{bin_setting_name}")
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let bin = g:{bin_setting_name}
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else
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if go#util#IsWin()
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let bin = binary . '.exe'
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else
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let bin = binary
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endif
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endif
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if !executable(bin) || a:updateBinaries == 1
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if a:updateBinaries == 1
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echo "vim-go: Updating " . binary . ". Reinstalling ". importPath . " to folder " . go_bin_path
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else
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echo "vim-go: ". binary ." not found. Installing ". importPath . " to folder " . go_bin_path
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endif
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" first download the binary
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let [l:out, l:err] = go#util#Exec(l:run_cmd + [l:importPath])
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if l:err
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echom "Error downloading " . l:importPath . ": " . l:out
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endif
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" and then build and install it
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let l:build_cmd = ['go', 'build', '-o', go_bin_path . go#util#PathSep() . bin, l:importPath]
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let [l:out, l:err] = go#util#Exec(l:build_cmd + [l:importPath])
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if l:err
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echom "Error installing " . l:importPath . ": " . l:out
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endif
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endif
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endfor
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" restore back!
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let $PATH = old_path
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if resetshellslash
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set shellslash
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endif
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if a:updateBinaries == 1
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call go#util#EchoInfo('updating finished!')
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else
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call go#util#EchoInfo('installing finished!')
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endif
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endfunction
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" CheckBinaries checks if the necessary binaries to install the Go tool
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" commands are available.
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function! s:CheckBinaries()
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if !executable('go')
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echohl Error | echomsg "vim-go: go executable not found." | echohl None
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return -1
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endif
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if !executable('git')
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echohl Error | echomsg "vim-go: git executable not found." | echohl None
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return -1
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endif
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endfunction
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" Autocommands
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" ============================================================================
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"
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function! s:echo_go_info()
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if !get(g:, "go_echo_go_info", 1)
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return
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endif
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if !exists('v:completed_item') || empty(v:completed_item)
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return
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endif
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let item = v:completed_item
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if !has_key(item, "info")
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return
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endif
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if empty(item.info)
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return
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endif
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redraws! | echo "vim-go: " | echohl Function | echon item.info | echohl None
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endfunction
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function! s:auto_type_info()
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" GoInfo automatic update
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if get(g:, "go_auto_type_info", 0)
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call go#tool#Info(0)
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endif
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endfunction
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function! s:auto_sameids()
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" GoSameId automatic update
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if get(g:, "go_auto_sameids", 0)
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call go#guru#SameIds(0)
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endif
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endfunction
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function! s:fmt_autosave()
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" Go code formatting on save
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if get(g:, "go_fmt_autosave", 1)
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call go#fmt#Format(-1)
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endif
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endfunction
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function! s:asmfmt_autosave()
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" Go asm formatting on save
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if get(g:, "go_asmfmt_autosave", 0)
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call go#asmfmt#Format()
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endif
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endfunction
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function! s:modfmt_autosave()
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" go.mod code formatting on save
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if get(g:, "go_mod_fmt_autosave", 1)
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call go#mod#Format()
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endif
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endfunction
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function! s:metalinter_autosave()
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" run gometalinter on save
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if get(g:, "go_metalinter_autosave", 0)
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call go#lint#Gometa(1)
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endif
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endfunction
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function! s:template_autocreate()
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" create new template from scratch
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if get(g:, "go_template_autocreate", 1)
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call go#template#create()
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endif
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endfunction
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augroup vim-go
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autocmd!
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autocmd CursorHold *.go call s:auto_type_info()
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autocmd CursorHold *.go call s:auto_sameids()
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" Echo the identifier information when completion is done. Useful to see
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" the signature of a function, etc...
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if exists('##CompleteDone')
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autocmd CompleteDone *.go call s:echo_go_info()
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endif
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autocmd BufWritePre *.go call s:fmt_autosave()
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autocmd BufWritePre *.mod call s:modfmt_autosave()
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autocmd BufWritePre *.s call s:asmfmt_autosave()
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autocmd BufWritePost *.go call s:metalinter_autosave()
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autocmd BufNewFile *.go call s:template_autocreate()
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" clear SameIds when the buffer is unloaded so that loading another buffer
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" in the same window doesn't highlight the most recently matched
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" identifier's positions.
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autocmd BufWinEnter *.go call go#guru#ClearSameIds()
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autocmd BufEnter *.go
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\ if go#config#AutodetectGopath() && !exists('b:old_gopath')
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\| let b:old_gopath = exists('$GOPATH') ? $GOPATH : -1
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\| let $GOPATH = go#path#Detect()
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\| endif
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autocmd BufLeave *.go
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\ if exists('b:old_gopath')
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\| if b:old_gopath isnot -1
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\| let $GOPATH = b:old_gopath
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\| endif
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\| unlet b:old_gopath
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\| endif
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augroup end
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" vim: sw=2 ts=2 et
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