1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
" Author: Joshua Rubin <joshua@rubixconsulting.com>
" Description: go build for Go files
" inspired by work from dzhou121 <dzhou121@gmail.com>
function! ale_linters#go#gobuild#GoEnv(buffer) abort
if exists('s:go_env')
return ''
endif
return 'go env GOPATH GOROOT'
endfunction
let s:SplitChar = has('unix') ? ':' : ':'
" get a list of all source directories from $GOPATH and $GOROOT
function! s:SrcDirs() abort
let l:paths = split(s:go_env.GOPATH, s:SplitChar)
call add(l:paths, s:go_env.GOROOT)
return l:paths
endfunction
" figure out from a directory like `/home/user/go/src/some/package` that the
" import for that path is simply `some/package`
function! s:PackageImportPath(buffer) abort
let l:bufname = resolve(bufname(a:buffer))
let l:pkgdir = fnamemodify(l:bufname, ':p:h')
for l:path in s:SrcDirs()
let l:path = l:path . '/src/'
if stridx(l:pkgdir, l:path) == 0
return l:pkgdir[strlen(l:path):]
endif
endfor
return ''
endfunction
" get the package info data structure using `go list`
function! ale_linters#go#gobuild#GoList(buffer, goenv_output) abort
if !empty(a:goenv_output)
let s:go_env = {
\ 'GOPATH': a:goenv_output[0],
\ 'GOROOT': a:goenv_output[1],
\}
endif
return 'go list -json ' . shellescape(s:PackageImportPath(a:buffer))
endfunction
let s:filekeys = [
\ 'GoFiles',
\ 'CgoFiles',
\ 'CFiles',
\ 'CXXFiles',
\ 'MFiles',
\ 'HFiles',
\ 'FFiles',
\ 'SFiles',
\ 'SwigFiles',
\ 'SwigCXXFiles',
\ 'SysoFiles',
\ 'TestGoFiles',
\ 'XTestGoFiles',
\]
" get the go and test go files from the package
" will return empty list if the package has any cgo or other invalid files
function! s:PkgFiles(pkginfo) abort
let l:files = []
for l:key in s:filekeys
if has_key(a:pkginfo, l:key)
call extend(l:files, a:pkginfo[l:key])
endif
endfor
" resolve the path of the file relative to the window directory
return map(l:files, 'shellescape(fnamemodify(resolve(a:pkginfo.Dir . ''/'' . v:val), '':p''))')
endfunction
function! ale_linters#go#gobuild#CopyFiles(buffer, golist_output) abort
let l:tempdir = tempname()
let l:temppkgdir = l:tempdir . '/src/' . s:PackageImportPath(a:buffer)
call mkdir(l:temppkgdir, 'p', 0700)
if empty(a:golist_output)
return 'echo ' . shellescape(l:tempdir)
endif
" parse the output
let l:pkginfo = json_decode(join(a:golist_output, "\n"))
" get all files for the package
let l:files = s:PkgFiles(l:pkginfo)
" copy the files to a temp directory with $GOPATH structure
return 'cp ' . join(l:files, ' ') . ' ' . shellescape(l:temppkgdir) . ' && echo ' . shellescape(l:tempdir)
endfunction
function! ale_linters#go#gobuild#GetCommand(buffer, copy_output) abort
let l:tempdir = a:copy_output[0]
let l:importpath = s:PackageImportPath(a:buffer)
" write the a:buffer and any modified buffers from the package to the tempdir
for l:bufnum in range(1, bufnr('$'))
" ignore unloaded buffers (can't be a:buffer or a modified buffer)
if !bufloaded(l:bufnum)
continue
endif
" ignore non-Go buffers
if getbufvar(l:bufnum, '&ft') !=# 'go'
continue
endif
" only consider buffers other than a:buffer if they have the same import
" path as a:buffer and are modified
if l:bufnum != a:buffer
if s:PackageImportPath(l:bufnum) !=# l:importpath
continue
endif
if !getbufvar(l:bufnum, '&mod')
continue
endif
endif
call writefile(getbufline(l:bufnum, 1, '$'), l:tempdir . '/src/' . s:PkgFile(l:bufnum))
endfor
let l:gopaths = [ l:tempdir ]
call extend(l:gopaths, split(s:go_env.GOPATH, s:SplitChar))
return 'GOPATH=' . shellescape(join(l:gopaths, s:SplitChar)) . ' go test -c -o /dev/null ' . shellescape(l:importpath)
endfunction
function! s:PkgFile(buffer) abort
let l:bufname = resolve(bufname(a:buffer))
let l:importpath = s:PackageImportPath(a:buffer)
let l:fname = fnamemodify(l:bufname, ':t')
return l:importpath . '/' . l:fname
endfunction
function! s:FindBuffer(file) abort
for l:buffer in range(1, bufnr('$'))
if !buflisted(l:buffer)
continue
endif
let l:pkgfile = s:PkgFile(l:buffer)
if a:file =~ '/' . l:pkgfile . '$'
return l:buffer
endif
endfor
return -1
endfunction
let s:path_pattern = '[a-zA-Z]\?\\\?:\?[[:alnum:]/\.\-_]\+'
let s:handler_pattern = '^\(' . s:path_pattern . '\):\(\d\+\):\?\(\d\+\)\?: \(.\+\)$'
let s:multibuffer = 0
function! ale_linters#go#gobuild#Handler(buffer, lines) abort
let l:output = []
for l:line in a:lines
let l:match = matchlist(l:line, s:handler_pattern)
if len(l:match) == 0
continue
endif
let l:buffer = s:FindBuffer(l:match[1])
if l:buffer == -1
continue
endif
if !s:multibuffer && l:buffer != a:buffer
" strip lines from other buffers
continue
endif
call add(l:output, {
\ 'bufnr': l:buffer,
\ 'lnum': l:match[2] + 0,
\ 'vcol': 0,
\ 'col': l:match[3] + 0,
\ 'text': l:match[4],
\ 'type': 'E',
\ 'nr': -1,
\})
endfor
return l:output
endfunction
call ale#linter#Define('go', {
\ 'name': 'go build',
\ 'executable': 'go',
\ 'command_chain': [
\ {'callback': 'ale_linters#go#gobuild#GoEnv', 'output_stream': 'stdout'},
\ {'callback': 'ale_linters#go#gobuild#GoList', 'output_stream': 'stdout'},
\ {'callback': 'ale_linters#go#gobuild#CopyFiles', 'output_stream': 'stdout'},
\ {'callback': 'ale_linters#go#gobuild#GetCommand', 'output_stream': 'stderr'},
\ ],
\ 'callback': 'ale_linters#go#gobuild#Handler',
\})
|
