Add dprint fixer

Author: myobie

autoload/ale/fix/registry.vim

@@ -491,6 +491,11 @@ let s:default_registry = {
 \       'suggested_filetypes': ['lua'],
 \       'description': 'Fix Lua files with luafmt.',
 \   },
+\   'dprint': {
+\       'function': 'ale#fixers#dprint#Fix',
+\       'suggested_filetypes': ['javascript', 'typescript', 'json', 'markdown'],
+\       'description': 'Pluggable and configurable code formatting platform',
+\   },
 \   'stylua': {
 \       'function': 'ale#fixers#stylua#Fix',
 \       'suggested_filetypes': ['lua'],

autoload/ale/fixers/dprint.vim

@@ -0,0 +1,29 @@
+call ale#Set('dprint_executable', 'dprint')
+call ale#Set('dprint_executable_override', 0)
+call ale#Set('dprint_use_global', get(g:, 'ale_use_global_executables', 0))
+call ale#Set('dprint_options', '')
+call ale#Set('dprint_config', 'dprint.json')
+
+function! ale#fixers#dprint#Fix(buffer) abort
+    let l:executable = ale#path#FindExecutable(a:buffer, 'dprint', ['dprint'])
+    let l:executable_override = ale#Var(a:buffer, 'dprint_executable_override')
+
+    if !executable(l:executable) && !l:executable_override
+        return 0
+    endif
+
+    let l:options = ale#Var(a:buffer, 'dprint_options')
+    let l:config = ale#path#FindNearestFile(a:buffer, ale#Var(a:buffer, 'dprint_config'))
+
+    if !empty(l:config)
+        let l:options = l:options . ' -c ' . ale#Escape(l:config)
+    endif
+
+    let l:options = l:options . ' --stdin %s'
+
+    return {
+    \   'command': ale#Escape(l:executable)
+    \     . ' fmt '
+    \     . l:options
+    \}
+endfunction

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

@@ -267,6 +267,7 @@ Notes:
 * JavaScript
   * `cspell`
   * `deno`
+  * `dprint`
   * `eslint`
   * `fecs`
   * `flow`
@@ -586,6 +587,7 @@ Notes:
 * TypeScript
   * `cspell`
   * `deno`
+  * `dprint`
   * `eslint`
   * `fecs`
   * `prettier`

supported-tools.md

@@ -276,6 +276,7 @@ formatting.
 * JavaScript
   * [cspell](https://github.com/streetsidesoftware/cspell/tree/main/packages/cspell)
   * [deno](https://deno.land/)
+  * [dprint](https://dprint.dev/)
   * [eslint](http://eslint.org/)
   * [fecs](http://fecs.baidu.com/)
   * [flow](https://flowtype.org/)
@@ -595,6 +596,7 @@ formatting.
 * TypeScript
   * [cspell](https://github.com/streetsidesoftware/cspell/tree/main/packages/cspell)
   * [deno](https://deno.land/)
+  * [dprint](https://dprint.dev/)
   * [eslint](http://eslint.org/)
   * [fecs](http://fecs.baidu.com/)
   * [prettier](https://github.com/prettier/prettier)

test/fixers/test_dprint_fixer_callback.vader

@@ -0,0 +1,42 @@
+Before:
+  call ale#assert#SetUpFixerTest('typescript', 'dprint')
+  call ale#test#SetFilename('../test-files/dprint/blank.ts')
+  let g:ale_dprint_executable_override = 0
+  let g:ale_dprint_executable = 'dprint'
+  let g:ale_dprint_config = ''
+
+After:
+  Restore
+  call ale#assert#TearDownFixerTest()
+
+Execute(The dprint callback should return 0 for a non-existent executable):
+  let g:ale_dprint_executable = 'foo'
+  AssertFixer 0
+
+Execute(The dprint callback should return the correct default values):
+  let g:ale_dprint_executable_override = 1
+  AssertFixer {
+  \   'command': ale#Escape('dprint')
+  \     . ' fmt '
+  \     . ' --stdin %s'
+  \ }
+
+Execute(The dprint callback should include config):
+  let g:ale_dprint_executable_override = 1
+  let g:ale_dprint_config = 'dprint.json'
+
+  AssertFixer {
+  \   'command': ale#Escape('dprint')
+  \     . ' fmt '
+  \     . ' -c ' . ale#Escape('/testplugin/test/test-files/dprint/dprint.json') . ' --stdin %s'
+  \ }
+
+Execute(The dprint callback should include custom options):
+  let g:ale_dprint_executable_override = 1
+  let g:ale_dprint_options = '--verbose'
+
+  AssertFixer {
+  \   'command': ale#Escape('dprint')
+  \     . ' fmt '
+  \     . '--verbose' . ' --stdin %s'
+  \ }