1 files changed, 59 insertions, 0 deletions
diff --git a/ale_linters/jsonnet/jsonnet_lint.vim b/ale_linters/jsonnet/jsonnet_lint.vim
new file mode 100644
index 00000000..a5ebdc39
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+++ b/ale_linters/jsonnet/jsonnet_lint.vim
@@ -0,0 +1,59 @@
+" Author: Trevor Whitney <trevorjwhitney@gmail.com>
+" Description: jsonnet-lint for jsonnet files
+
+call ale#Set('jsonnet_jsonnet_lint_executable', 'jsonnet-lint')
+call ale#Set('jsonnet_jsonnet_lint_options', '')
+
+function! ale_linters#jsonnet#jsonnet_lint#GetCommand(buffer) abort
+    let l:options = ale#Var(a:buffer, 'jsonnet_jsonnet_lint_options')
+
+    return '%e'
+    \   . ale#Pad(l:options)
+    \   . ' %t'
+endfunction
+
+
+function! ale_linters#jsonnet#jsonnet_lint#Handle(buffer, lines) abort
+    " Matches patterns line the following:
+    "
+    " ERROR: foo.jsonnet:22:3-12 expected token OPERATOR but got (IDENTIFIER, "bar")
+    " ERROR: hoge.jsonnet:20:3 unexpected: "}" while parsing terminal
+    " ERROR: main.jsonnet:212:1-14 Expected , or ; but got (IDENTIFIER, "older_cluster")
+    let l:pattern = '^ERROR: [^:]*:\(\d\+\):\(\d\+\)\(-\d\+\)* \(.*\)'
+    let l:output = []
+
+    for l:line in a:lines
+        let l:match = matchlist(l:line, l:pattern)
+
+        if len(l:match) == 0
+            continue
+        endif
+
+        let line_number = l:match[1] + 0
+        let column = l:match[2] + 0
+        " l:match[3] has optional -14, when linter is showing a range
+        let text = l:match[4]
+
+
+        " vcol is Needed to indicate that the column is a character.
+        call add(l:output, {
+        \   'bufnr': a:buffer,
+        \   'lnum': line_number,
+        \   'vcol': 0,
+        \   'col': column,
+        \   'text': text,
+        \   'type': 'E',
+        \   'nr': -1,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('jsonnet', {
+\   'name': 'jsonnet_lint',
+\   'output_stream': 'stderr',
+\   'executable': {b -> ale#Var(b, 'jsonnet_jsonnet_lint_executable')},
+\   'command': function('ale_linters#jsonnet#jsonnet_lint#GetCommand'),
+\   'callback': 'ale_linters#jsonnet#jsonnet_lint#Handle',
+\})