feat(D): add D-Scanner

autoload/neomake/makers/ft/d.vim

@@ -3,7 +3,7 @@
 function! neomake#makers#ft#d#EnabledMakers() abort
     " dmd, ldmd, and gdmd all share a common CLI.
     " Ordered in efficiency of compiler
-    for m in ['dmd', 'ldmd', 'gdmd']
+    for m in ['dmd', 'ldmd', 'gdmd', 'dscanner']
         if executable(m)
             return [m]
         endif
@@ -90,3 +90,37 @@ function! neomake#makers#ft#d#gdmd() abort
             \ '%f:%l: %m',
         \ }
 endfunction
+
+function! neomake#makers#ft#d#DScannerProcessJSON(context) abort
+    let entries = []
+    for i in get(a:context.json, 'issues', [])
+        let type='E'
+        if i.type ==# 'warn'
+            let type = 'W'
+        endif
+        let length = i.endIndex - i.index
+        let entry = {
+                    \ 'code': i.key,
+                    \ 'col': i.column,
+                    \ 'end_col': i.endColumn,
+                    \ 'end_lnum': i.endLine,
+                    \ 'filename': i['fileName'],
+                    \ 'length': length,
+                    \ 'lnum': i.line,
+                    \ 'maker_name': 'dscanner',
+                    \ 'text': i.message,
+                    \ 'type': type,
+                    \ }
+        call add(entries, entry)
+    endfor
+    return entries
+
+endfunction
+
+function! neomake#makers#ft#d#dscanner() abort
+    return {
+                \ 'args': ['--report', 'source/'],
+                \ 'process_json': function('neomake#makers#ft#d#DScannerProcessJSON'),
+                \ 'supports_stdin': 0,
+                \ }
+endfunction

tests/ft_d.vader

@@ -0,0 +1,48 @@
+Include: include/setup.vader
+
+Execute (d: dscanner):
+  let null = g:neomake#compat#json_null
+  let true = g:neomake#compat#json_true
+
+  let json_output = '
+      \ {
+      \     "classCount": 0,
+      \     "functionCount": 1,
+      \     "interfaceCount": 0,
+      \     "issues": [
+      \         {
+      \             "column": 13,
+      \             "endColumn": 16,
+      \             "endIndex": 48,
+      \             "endLine": 5,
+      \             "fileName": "source\/app.d",
+      \             "index": 45,
+      \             "key": "dscanner.suspicious.unused_variable",
+      \             "line": 5,
+      \             "message": "Variable abc is never used.",
+      \             "name": "unused_variable_check",
+      \             "supplemental": [],
+      \             "type": "warn"
+      \         }
+      \     ],
+      \     "lineOfCodeCount": 3,
+      \     "statementCount": 1,
+      \     "structCount": 0,
+      \     "templateCount": 0,
+      \     "undocumentedPublicSymbols": 0
+      \ }
+      \ '
+      let context = {'json': neomake#compat#json_decode(json_output)}
+  let errors = neomake#makers#ft#d#DScannerProcessJSON(context)
+  AssertEqual [{
+    \ 'lnum': 5,
+      \ 'col': 13,
+      \ 'end_col': 16,
+      \ 'end_lnum': 5,
+      \ 'filename': 'source/app.d',
+      \ 'code': 'dscanner.suspicious.unused_variable',
+      \ 'length': 3,
+      \ 'type': 'W',
+      \ 'maker_name': 'dscanner',
+      \ 'text': 'Variable abc is never used.',
+      \ }], errors

tests/main.vader

@@ -54,6 +54,7 @@ Include (Asciidoc): ft_asciidoc.vader
 Include (Clojure): ft_clojure.vader
 Include (Cs): ft_cs.vader
 Include (Css): ft_css.vader
+Include (D): ft_d.vader
 Include (Dockerfile): ft_dockerfile.vader
 Include (Elixir): ft_elixir.vader
 Include (Elm): ft_elm.vader