add joker handler for clojure

Adds new linter for clojure using joker

https://github.com/candid82/joker

fixes #975
ref #544 #1040

README.md

@@ -81,6 +81,7 @@ formatting.
 | CUDA | [nvcc](http://docs.nvidia.com/cuda/cuda-compiler-driver-nvcc/index.html) |
 | C# | [mcs](http://www.mono-project.com/docs/about-mono/languages/csharp/) see:`help ale-cs-mcs` for details, [mcsc](http://www.mono-project.com/docs/about-mono/languages/csharp/) !! see:`help ale-cs-mcsc` for details and configuration|
 | Chef | [foodcritic](http://www.foodcritic.io/) |
+| Clojure | [joker](https://github.com/candid82/joker) |
 | CMake | [cmakelint](https://github.com/richq/cmake-lint) |
 | CoffeeScript | [coffee](http://coffeescript.org/), [coffeelint](https://www.npmjs.com/package/coffeelint) |
 | Crystal | [crystal](https://crystal-lang.org/) !! |

ale_linters/clojure/joker.vim

@@ -0,0 +1,32 @@
+" Author: Nic West <nicwest@mailbox.org>
+" Description: linter for clojure using joker https://github.com/candid82/joker
+
+function! ale_linters#clojure#joker#HandleJokerFormat(buffer, lines) abort
+    " output format
+    " <filename>:<line>:<column>: <issue type>: <message>
+    let l:pattern = '\v^[a-zA-Z]?:?[^:]+:(\d+):(\d+):? ((Read error|Parse error|Parse warning|Exception): ?(.+))$'
+    let l:output = []
+
+    for l:match in ale#util#GetMatches(a:lines, l:pattern)
+        let l:type = 'E'
+        if l:match[4] is? 'Parse warning'
+          let l:type = 'W'
+        endif
+        call add(l:output, {
+        \   'lnum': l:match[1] + 0,
+        \   'col': l:match[2] + 0,
+        \   'text': l:match[3],
+        \   'type': l:type,
+        \})
+    endfor
+
+    return l:output
+endfunction
+
+call ale#linter#Define('clojure', {
+\   'name': 'joker',
+\   'output_stream': 'stderr',
+\   'executable': 'joker',
+\   'command': 'joker --lint %t',
+\   'callback': 'ale_linters#clojure#joker#HandleJokerFormat',
+\})

doc/ale-clojure.txt

@@ -0,0 +1,21 @@
+===============================================================================
+ALE Clojure Integration                                   *ale-clojure-options*
+
+
+===============================================================================
+joker                                                       *ale-clojure-joker*
+
+Joker is a small Clojure interpreter and linter written in Go.
+
+https://github.com/candid82/joker
+
+Linting options are not configurable by ale, but instead are controlled by a
+`.joker` file in same directory as the file (or current working directory if
+linting stdin), a parent directory relative to the file, or the users home
+directory.
+
+see https://github.com/candid82/joker#linter-mode for more information.
+
+===============================================================================
+  vim:tw=78:ts=2:sts=2:sw=2:ft=help:norl:
+

doc/ale.txt

@@ -29,6 +29,8 @@ CONTENTS                                                         *ale-contents*
       gcc.................................|ale-c-gcc|
     chef..................................|ale-chef-options|
       foodcritic..........................|ale-chef-foodcritic|
+    clojure...............................|ale-clojure-options|
+      joker...............................|ale-clojure-joker|
     cmake.................................|ale-cmake-options|
       cmakelint...........................|ale-cmake-cmakelint|
     cpp...................................|ale-cpp-options|
@@ -271,6 +273,7 @@ Notes:
 * CUDA: `nvcc`!!
 * C#: `mcs`, `mcsc`!!
 * Chef: `foodcritic`
+* Clojure: `joker`
 * CMake: `cmakelint`
 * CoffeeScript: `coffee`, `coffeelint`
 * Crystal: `crystal`!!

test/handler/test_clojure_joker_handler.vader

@@ -0,0 +1,75 @@
+Before:
+  runtime ale_linters/clojure/joker.vim
+
+After:
+  call ale#linter#Reset()
+
+Execute(the clojure joker handler should be able to handle errors):
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 123,
+  \     'col': 44,
+  \     'type': 'E',
+  \     'text': 'Read error: Unexpected )',
+  \   },
+  \ ],
+  \ ale_linters#clojure#joker#HandleJokerFormat(0, [
+  \   'test.clj:123:44: Read error: Unexpected )',
+  \ ])
+
+Execute(the clojure joker handler should be able to handle warnings):
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 654,
+  \     'col': 321,
+  \     'type': 'W',
+  \     'text': 'Parse warning: let form with empty body',
+  \   }
+  \ ],
+  \ ale_linters#clojure#joker#HandleJokerFormat(0, [
+  \   'test.clj:654:321: Parse warning: let form with empty body'
+  \ ])
+
+Execute(the clojure joker handler should be able to handle exceptions):
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 123,
+  \     'col': 321,
+  \     'type': 'E',
+  \     'text': 'Exception: something horrible happen',
+  \   }
+  \ ],
+  \ ale_linters#clojure#joker#HandleJokerFormat(0, [
+  \   'test.clj:123:321: Exception: something horrible happen'
+  \ ])
+
+Execute(the clojure joker handler should be able to handle errors from stdin):
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 16,
+  \     'col': 1,
+  \     'type': 'E',
+  \     'text': 'Read error: Unexpected )',
+  \   },
+  \ ],
+  \ ale_linters#clojure#joker#HandleJokerFormat(0, [
+  \   '<stdin>:16:1: Read error: Unexpected )',
+  \ ])
+
+Execute(the clojure joker handler should be able to handle windows files):
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 123,
+  \     'col': 44,
+  \     'type': 'E',
+  \     'text': 'Read error: Unexpected )',
+  \   }
+  \ ],
+  \ ale_linters#clojure#joker#HandleJokerFormat(0, [
+  \   'C:\my\operating\system\is\silly\core.clj:123:44: Read error: Unexpected )',
+  \ ])