Add fixer for OCaml ocp-indent (#2436)

autoload/ale/fix/registry.vim

@@ -220,6 +220,11 @@ let s:default_registry = {
 \       'suggested_filetypes': ['ocaml'],
 \       'description': 'Fix OCaml files with ocamlformat.',
 \   },
+\   'ocp-indent': {
+\       'function': 'ale#fixers#ocp_indent#Fix',
+\       'suggested_filetypes': ['ocaml'],
+\       'description': 'Fix OCaml files with ocp-indent.',
+\   },
 \   'refmt': {
 \       'function': 'ale#fixers#refmt#Fix',
 \       'suggested_filetypes': ['reason'],

autoload/ale/fixers/ocp_indent.vim

@@ -0,0 +1,18 @@
+" Author: Kanenobu Mitsuru
+" Description: Integration of ocp-indent with ALE.
+
+call ale#Set('ocaml_ocp_indent_executable', 'ocp-indent')
+call ale#Set('ocaml_ocp_indent_options', '')
+call ale#Set('ocaml_ocp_indent_config', '')
+
+function! ale#fixers#ocp_indent#Fix(buffer) abort
+    let l:executable = ale#Var(a:buffer, 'ocaml_ocp_indent_executable')
+    let l:config = ale#Var(a:buffer, 'ocaml_ocp_indent_config')
+    let l:options = ale#Var(a:buffer, 'ocaml_ocp_indent_options')
+
+    return {
+    \   'command': ale#Escape(l:executable)
+    \       . (empty(l:config) ? '' : ' --config=' . ale#Escape(l:config))
+    \       . (empty(l:options) ? '': ' ' . l:options)
+    \}
+endfunction

doc/ale-ocaml.txt

@@ -50,5 +50,33 @@ g:ale_ocaml_ocamlformat_options               *g:ale_ocaml_ocamlformat_options*
 
   This variable can be set to pass additional options to the ocamlformat fixer.
 
+===============================================================================
+ocp-indent                                               *ale-ocaml-ocp-indent*
+
+g:ale_ocaml_ocp_indent_executable           *g:ale_ocaml_ocp_indent_executable*
+                                            *b:ale_ocaml_ocp_indent_executable*
+  Type: |String|
+  Default: `ocp-indent`
+
+  This variable can be set to pass the path of the ocp-indent.
+
+g:ale_ocaml_ocp_indent_options                 *g:ale_ocaml_ocp_indent_options*
+                                               *b:ale_ocaml_ocp_indent_options*
+  Type: |String|
+  Default: `''`
+
+  This variable can be set to pass additional options to the ocp-indent.
+
+g:ale_ocaml_ocp_indent_config                   *g:ale_ocaml_ocp_indent_config*
+                                                *b:ale_ocaml_ocp_indent_config*
+  Type: |String|
+  Default: `''`
+
+  This variable can be set to pass additional config to the ocp-indent.
+  Expand after "--config=".
+
+  "ocp-indent" can also be enabled from ocamlformat config.
+
+
 ===============================================================================
   vim:tw=78:ts=2:sts=2:sw=2:ft=help:norl:

doc/ale-supported-languages-and-tools.txt

@@ -293,6 +293,7 @@ Notes:
 * OCaml
   * `merlin` (see |ale-ocaml-merlin|)
   * `ocamlformat`
+  * `ocp-indent`
   * `ols`
 * Pawn
   * `uncrustify`

doc/ale.txt

@@ -2105,6 +2105,7 @@ documented in additional help files.
     merlin................................|ale-ocaml-merlin|
     ols...................................|ale-ocaml-ols|
     ocamlformat...........................|ale-ocaml-ocamlformat|
+    ocp-indent............................|ale-ocaml-ocp-indent|
   pawn....................................|ale-pawn-options|
     uncrustify............................|ale-pawn-uncrustify|
   perl....................................|ale-perl-options|

supported-tools.md

@@ -302,6 +302,7 @@ formatting.
 * OCaml
   * [merlin](https://github.com/the-lambda-church/merlin) see `:help ale-ocaml-merlin` for configuration instructions
   * [ocamlformat](https://github.com/ocaml-ppx/ocamlformat)
+  * [ocp-indent](https://github.com/OCamlPro/ocp-indent)
   * [ols](https://github.com/freebroccolo/ocaml-language-server)
 * Pawn
   * [uncrustify](https://github.com/uncrustify/uncrustify)

test/fixers/test_ocp_indent_fixer_callback.vader

@@ -0,0 +1,34 @@
+Before:
+  Save g:ale_ocaml_ocp_indent_executable
+  Save g:ale_ocaml_ocpindent_options
+
+  " Use an invalid global executable
+  let g:ale_ocaml_ocp_indent_executable = 'xxxinvalid'
+  let g:ale_ocaml_ocp_indent_options = ''
+
+  call ale#test#SetDirectory('/testplugin/test/fixers')
+
+After:
+  Restore
+
+  call ale#test#RestoreDirectory()
+
+Execute(The ocp_indent callback should return the correct default values):
+  call ale#test#SetFilename('../ocaml-test-files/ocp_inden_testfile.re')
+
+  AssertEqual
+  \ {
+  \   'command': ale#Escape('xxxinvalid')
+  \ },
+  \ ale#fixers#ocp_indent#Fix(bufnr(''))
+
+Execute(The ocp_indent callback should include custom ocp_indent options):
+  let g:ale_ocaml_ocp_indent_config = "base=4, type=4"
+  call ale#test#SetFilename('../ocaml-test-files/ocp_inden_testfile.re')
+
+  AssertEqual
+  \ {
+  \   'command': ale#Escape('xxxinvalid')
+  \     . ' --config=' . ale#Escape(g:ale_ocaml_ocp_indent_config)
+  \ },
+  \ ale#fixers#ocp_indent#Fix(bufnr(''))