dafny: add a timeLimit option and message-parsing

ale_linters/dafny/dafny.vim

@@ -14,13 +14,28 @@ function! ale_linters#dafny#dafny#Handle(buffer, lines) abort
         \ })
     endfor
 
+    for l:match in ale#util#GetMatches(a:lines, '\v(.*)\((\d+),(\d+)\): (Verification of .{-} timed out after \d+ seconds)')
+        call add(l:output, {
+        \     'bufnr': a:buffer,
+        \     'col': l:match[3] + 0,
+        \     'lnum': l:match[2] + 0,
+        \     'text': l:match[4],
+        \     'type': 'E',
+        \ })
+    endfor
+
     return l:output
 endfunction
 
+function! ale_linters#dafny#dafny#GetCommand(buffer) abort
+    return printf('dafny %%s /compile:0 /timeLimit:%d', ale#Var(a:buffer, 'dafny_dafny_timelimit'))
+endfunction
+
+call ale#Set('dafny_dafny_timelimit', 10)
 call ale#linter#Define('dafny', {
 \    'name': 'dafny',
 \    'executable': 'dafny',
-\    'command': 'dafny %s /compile:0',
+\    'command': function('ale_linters#dafny#dafny#GetCommand'),
 \    'callback': 'ale_linters#dafny#dafny#Handle',
 \    'lint_file': 1,
 \ })

doc/ale-dafny.txt

@@ -0,0 +1,16 @@
+===============================================================================
+ALE Dafny Integration                                       *ale-dafny-options*
+
+
+===============================================================================
+dafny                                                         *ale-dafny-dafny*
+
+g:ale_dafny_dafny_timelimit                       *g:ale_dafny_dafny_timelimit*
+                                                  *b:ale_dafny_dafny_timelimit*
+  Type: |Number|
+  Default: `10`
+
+  This variable sets the `/timeLimit` used for dafny.
+
+
+  vim:tw=78:ts=2:sts=2:sw=2:ft=help:norl:

doc/ale.txt

@@ -2571,6 +2571,8 @@ documented in additional help files.
     dfmt..................................|ale-d-dfmt|
     dls...................................|ale-d-dls|
     uncrustify............................|ale-d-uncrustify|
+  dafny...................................|ale-dafny-options|
+    dafny.................................|ale-dafny-dafny|
   dart....................................|ale-dart-options|
     dartanalyzer..........................|ale-dart-dartanalyzer|
     dartfmt...............................|ale-dart-dartfmt|