#517 Support linter settings needed for LSP, undocumented for now

1 files changed, 43 insertions, 2 deletions

diff --git a/autoload/ale/linter.vim b/autoload/ale/linter.vim
index 09f1d597..f1d5c091 100644
--- a/autoload/ale/linter.vim
+++ b/autoload/ale/linter.vim
@@ -51,6 +51,7 @@ function! ale#linter#PreProcess(linter) abort
 
     let l:obj = {
     \   'name': get(a:linter, 'name'),
+    \   'lsp': get(a:linter, 'lsp', ''),
     \   'callback': get(a:linter, 'callback'),
     \}
 
@@ -62,7 +63,27 @@ function! ale#linter#PreProcess(linter) abort
         throw '`callback` must be defined with a callback to accept output'
     endif
 
-    if has_key(a:linter, 'executable_callback')
+    let l:needs_executable = 0
+    let l:needs_address = 0
+    let l:needs_command = 0
+
+    if l:obj.lsp ==# 'tsserver'
+        let l:needs_executable = 1
+    elseif l:obj.lsp ==# 'lsp'
+        let l:needs_address = 1
+    elseif !empty(l:obj.lsp)
+        throw '`lsp` must be either `''lsp''` or `''tsserver''` if defined'
+    else
+        let l:needs_executable = 1
+        let l:needs_command = 1
+    endif
+
+    if !l:needs_executable
+        if has_key(a:linter, 'executable')
+        \|| has_key(a:linter, 'executable_callback')
+            throw '`executable` and `executable_callback` cannot be used when lsp == ''lsp'''
+        endif
+    elseif has_key(a:linter, 'executable_callback')
         let l:obj.executable_callback = a:linter.executable_callback
 
         if !s:IsCallback(l:obj.executable_callback)
@@ -78,7 +99,13 @@ function! ale#linter#PreProcess(linter) abort
         throw 'Either `executable` or `executable_callback` must be defined'
     endif
 
-    if has_key(a:linter, 'command_chain')
+    if !l:needs_command
+        if has_key(a:linter, 'command')
+        \|| has_key(a:linter, 'command_callback')
+        \|| has_key(a:linter, 'command_chain')
+            throw '`command` and `command_callback` and `command_chain` cannot be used when `lsp` is set'
+        endif
+    elseif has_key(a:linter, 'command_chain')
         let l:obj.command_chain = a:linter.command_chain
 
         if type(l:obj.command_chain) != type([])
@@ -138,6 +165,20 @@ function! ale#linter#PreProcess(linter) abort
         \   . 'should be set'
     endif
 
+    if !l:needs_address
+        if has_key(a:linter, 'address_callback')
+            throw '`address_callback` cannot be used when lsp != ''lsp'''
+        endif
+    elseif has_key(a:linter, 'address_callback')
+        let l:obj.address_callback = a:linter.address_callback
+
+        if !s:IsCallback(l:obj.address_callback)
+            throw '`address_callback` must be a callback if defined'
+        endif
+    else
+        throw '`address_callback` must be defined for getting the LSP address'
+    endif
+
     let l:obj.output_stream = get(a:linter, 'output_stream', 'stdout')
 
     if type(l:obj.output_stream) != type('')