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feat(lsp): completion opts support custom item conversion (#30060)

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Problem: Some items of completion results include function signatures that can
cause the pum to be very long when a function has many params, because pum
scales with the longest word/abbr.

Solution: add custom covert function that can customise abbr to remove params.
This commit is contained in:
glepnir
2024-08-23 03:42:27 +08:00
committed by GitHub
parent e48179f31e
commit 1f5bcc7c4e
4 changed files with 38 additions and 6 deletions
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16
runtime/lua/vim/lsp/completion.lua
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@@ -23,6 +23,7 @@ local ns_to_ms = 0.000001
--- @class vim.lsp.completion.BufHandle
--- @field clients table<integer, vim.lsp.Client>
--- @field triggers table<string, vim.lsp.Client[]>
--- @field convert? fun(item: lsp.CompletionItem): table
--- @type table<integer, vim.lsp.completion.BufHandle>
local buf_handles = {}
@@ -250,6 +251,8 @@ function M._lsp_to_complete_items(result, prefix, client_id)
end
local candidates = {}
local bufnr = api.nvim_get_current_buf()
local user_convert = vim.tbl_get(buf_handles, bufnr, 'convert')
for _, item in ipairs(items) do
if matches(item) then
local word = get_completion_word(item)
@@ -260,7 +263,7 @@ function M._lsp_to_complete_items(result, prefix, client_id)
then
hl_group = 'DiagnosticDeprecated'
end
table.insert(candidates, {
local completion_item = {
word = word,
abbr = item.label,
kind = protocol.CompletionItemKind[item.kind] or 'Unknown',
@@ -278,7 +281,11 @@ function M._lsp_to_complete_items(result, prefix, client_id)
},
},
},
})
}
if user_convert then
completion_item = vim.tbl_extend('keep', user_convert(item), completion_item)
end
table.insert(candidates, completion_item)
end
end
---@diagnostic disable-next-line: no-unknown
@@ -590,14 +597,15 @@ end
--- @class vim.lsp.completion.BufferOpts
--- @field autotrigger? boolean Whether to trigger completion automatically. Default: false
--- @field convert? fun(item: lsp.CompletionItem): table An optional function used to customize the transformation of an LSP CompletionItem to |complete-items|.
--- @param client_id integer
---@param client_id integer
---@param bufnr integer
---@param opts vim.lsp.completion.BufferOpts
local function enable_completions(client_id, bufnr, opts)
local buf_handle = buf_handles[bufnr]
if not buf_handle then
buf_handle = { clients = {}, triggers = {} }
buf_handle = { clients = {}, triggers = {}, convert = opts.convert }
buf_handles[bufnr] = buf_handle
-- Attach to buffer events.