#517 Implement some LSP message handling

autoload/ale/lsp/message.vim

@@ -0,0 +1,65 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: Language Server Protocol message implementations
+
+function! ale#lsp#message#CancelRequest(id) abort
+    return ale#lsp#CreateMessage('$/cancelRequest', {'id': a:id})
+endfunction
+
+function! ale#lsp#message#Initialize(processId, rootUri) abort
+    " TODO: Define needed capabilities.
+    return ale#lsp#CreateMessage('initialize', {
+    \   'processId': a:processId,
+    \   'rootUri': a:rootUri,
+    \   'capabilities': {},
+    \})
+endfunction
+
+function! ale#lsp#message#Initialized() abort
+    return ale#lsp#CreateMessage('initialized')
+endfunction
+
+function! ale#lsp#message#Shutdown() abort
+    return ale#lsp#CreateMessage('shutdown')
+endfunction
+
+function! ale#lsp#message#Exit() abort
+    return ale#lsp#CreateMessage('exit')
+endfunction
+
+function! ale#lsp#message#DidOpen(uri, languageId, version, text) abort
+    return ale#lsp#CreateMessage('textDocument/didOpen', {
+    \   'textDocument': {
+    \       'uri': a:uri,
+    \       'languageId': a:languageId,
+    \       'version': a:version,
+    \       'text': a:text,
+    \   },
+    \})
+endfunction
+
+function! ale#lsp#message#DidChange(uri, version, text) abort
+    " For changes, we simply send the full text of the document to the server.
+    return ale#lsp#CreateMessage('textDocument/didChange', {
+    \   'textDocument': {
+    \       'uri': a:uri,
+    \       'version': a:version,
+    \   },
+    \   'contentChanges': [{'text': a:text}]
+    \})
+endfunction
+
+function! ale#lsp#message#DidSave(uri) abort
+    return ale#lsp#CreateMessage('textDocument/didSave', {
+    \   'textDocument': {
+    \       'uri': a:uri,
+    \   },
+    \})
+endfunction
+
+function! ale#lsp#message#DidClose(uri) abort
+    return ale#lsp#CreateMessage('textDocument/didClose', {
+    \   'textDocument': {
+    \       'uri': a:uri,
+    \   },
+    \})
+endfunction