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lsp: Use incremental sync by default

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With the new implementation added in
https://github.com/neovim/neovim/pull/14079 I think this is now working
well enough to enable it by default.

There are high CPU usage issues popping up now and then and they might
at least partially be related to the full-text sync.
This commit is contained in:
Mathias Fussenegger
2021-03-11 16:01:40 +01:00
parent 5d20fc4fc5
commit 16827817bb
2 changed files with 10 additions and 32 deletions
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13
runtime/doc/lsp.txt
View File

@@ -749,15 +749,6 @@ start_client({config}) *vim.lsp.start_client()*
The following parameters describe fields in the {config}
table.
>
-- In init function for the client, you can do:
local custom_init = function(client)
if client.config.flags then
client.config.flags.allow_incremental_sync = true
end
end
<
Parameters: ~
{root_dir} (required, string) Directory where the
@@ -856,8 +847,8 @@ start_client({config}) *vim.lsp.start_client()*
{flags} A table with flags for the client. The
current (experimental) flags are:
• allow_incremental_sync (bool, default
false): Allow using on_line callbacks
for lsp
true): Allow using incremental sync
for buffer edits
Return: ~
Client id. |vim.lsp.get_client_by_id()| Note: client may

29
runtime/lua/vim/lsp.lua
View File

@@ -265,8 +265,11 @@ end
--@param bufnr (Number) Number of the buffer, or 0 for current
--@param client Client object
local function text_document_did_open_handler(bufnr, client)
local allow_incremental_sync = if_nil(client.config.flags.allow_incremental_sync, false)
if allow_incremental_sync then
local use_incremental_sync = (
if_nil(client.config.flags.allow_incremental_sync, true)
and client.resolved_capabilities.text_document_did_change == protocol.TextDocumentSyncKind.Incremental
)
if use_incremental_sync then
if not client._cached_buffers then
client._cached_buffers = {}
end
@@ -452,16 +455,7 @@ end
--@param trace: "off" | "messages" | "verbose" | nil passed directly to the language
--- server in the initialize request. Invalid/empty values will default to "off"
--@param flags: A table with flags for the client. The current (experimental) flags are:
--- - allow_incremental_sync (bool, default false): Allow using on_line callbacks for lsp
---
--- <pre>
--- -- In attach function for the client, you can do:
--- local custom_attach = function(client)
--- if client.config.flags then
--- client.config.flags.allow_incremental_sync = true
--- end
--- end
--- </pre>
--- - allow_incremental_sync (bool, default true): Allow using incremental sync for buffer edits
---
--@returns Client id. |vim.lsp.get_client_by_id()| Note: client may not be
--- fully initialized. Use `on_init` to do any actions once
@@ -858,19 +852,12 @@ do
};
end)
local uri = vim.uri_from_bufnr(bufnr)
for_each_buffer_client(bufnr, function(client, _client_id)
local allow_incremental_sync = if_nil(client.config.flags.allow_incremental_sync, false)
for_each_buffer_client(bufnr, function(client)
local allow_incremental_sync = if_nil(client.config.flags.allow_incremental_sync, true)
local text_document_did_change = client.resolved_capabilities.text_document_did_change
local changes
if text_document_did_change == protocol.TextDocumentSyncKind.None then
return
--[=[ TODO(ashkan) there seem to be problems with the byte_sizes sent by
-- neovim right now so only send the full content for now. In general, we
-- can assume that servers *will* support both versions anyway, as there
-- is no way to specify the sync capability by the client.
-- See https://github.com/palantir/python-language-server/commit/cfd6675bc10d5e8dbc50fc50f90e4a37b7178821#diff-f68667852a14e9f761f6ebf07ba02fc8 for an example of pyls handling both.
--]=]
elseif not allow_incremental_sync or text_document_did_change == protocol.TextDocumentSyncKind.Full then
changes = full_changes(client)
elseif text_document_did_change == protocol.TextDocumentSyncKind.Incremental then