mirror of
https://github.com/SpaceVim/SpaceVim.git
synced 2025-02-04 04:00:05 +08:00
436 lines
13 KiB
Lua
436 lines
13 KiB
Lua
local debug = require('cmp.utils.debug')
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local char = require('cmp.utils.char')
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local pattern = require('cmp.utils.pattern')
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local feedkeys = require('cmp.utils.feedkeys')
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local async = require('cmp.utils.async')
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local keymap = require('cmp.utils.keymap')
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local context = require('cmp.context')
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local source = require('cmp.source')
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local view = require('cmp.view')
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local misc = require('cmp.utils.misc')
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local config = require('cmp.config')
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local types = require('cmp.types')
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local api = require('cmp.utils.api')
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local event = require('cmp.utils.event')
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local SOURCE_TIMEOUT = 500
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local THROTTLE_TIME = 120
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local DEBOUNCE_TIME = 20
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---@class cmp.Core
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---@field public suspending boolean
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---@field public view cmp.View
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---@field public sources cmp.Source[]
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---@field public sources_by_name table<string, cmp.Source>
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---@field public context cmp.Context
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---@field public event cmp.Event
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local core = {}
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core.new = function()
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local self = setmetatable({}, { __index = core })
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self.suspending = false
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self.sources = {}
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self.sources_by_name = {}
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self.context = context.new()
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self.event = event.new()
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self.view = view.new()
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self.view.event:on('keymap', function(...)
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self:on_keymap(...)
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end)
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return self
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end
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---Register source
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---@param s cmp.Source
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core.register_source = function(self, s)
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self.sources[s.id] = s
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if not self.sources_by_name[s.name] then
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self.sources_by_name[s.name] = {}
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end
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table.insert(self.sources_by_name[s.name], s)
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end
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---Unregister source
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---@param source_id string
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core.unregister_source = function(self, source_id)
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local name = self.sources[source_id].name
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self.sources_by_name[name] = vim.tbl_filter(function(s)
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return s.id ~= source_id
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end, self.sources_by_name[name])
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self.sources[source_id] = nil
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end
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---Get new context
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---@param option cmp.ContextOption
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---@return cmp.Context
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core.get_context = function(self, option)
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local prev = self.context:clone()
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prev.prev_context = nil
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local ctx = context.new(prev, option)
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self:set_context(ctx)
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return self.context
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end
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---Set new context
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---@param ctx cmp.Context
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core.set_context = function(self, ctx)
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self.context = ctx
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end
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---Suspend completion
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core.suspend = function(self)
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self.suspending = true
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return function()
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self.suspending = false
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end
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end
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---Get sources that sorted by priority
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---@param statuses cmp.SourceStatus[]
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---@return cmp.Source[]
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core.get_sources = function(self, statuses)
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local sources = {}
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for _, c in pairs(config.get().sources) do
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for _, s in ipairs(self.sources_by_name[c.name] or {}) do
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if not statuses or vim.tbl_contains(statuses, s.status) then
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if s:is_available() then
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table.insert(sources, s)
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end
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end
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end
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end
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return sources
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end
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---Keypress handler
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core.on_keymap = function(self, keys, fallback)
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local mode = api.get_mode()
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for key, mapping in pairs(config.get().mapping) do
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if keymap.equals(key, keys) and mapping[mode] then
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return mapping[mode](fallback)
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end
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end
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--Commit character. NOTE: This has a lot of cmp specific implementation to make more user-friendly.
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local chars = keymap.t(keys)
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local e = self.view:get_active_entry()
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if e and vim.tbl_contains(config.get().confirmation.get_commit_characters(e:get_commit_characters()), chars) then
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local is_printable = char.is_printable(string.byte(chars, 1))
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self:confirm(e, {
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behavior = is_printable and 'insert' or 'replace',
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}, function()
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local ctx = self:get_context()
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local word = e:get_word()
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if string.sub(ctx.cursor_before_line, -#word, ctx.cursor.col - 1) == word and is_printable then
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fallback()
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else
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self:reset()
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end
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end)
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return
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end
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fallback()
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end
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---Prepare completion
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core.prepare = function(self)
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for keys, mapping in pairs(config.get().mapping) do
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for mode in pairs(mapping) do
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keymap.listen(mode, keys, function(...)
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self:on_keymap(...)
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end)
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end
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end
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end
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---Check auto-completion
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core.on_change = function(self, trigger_event)
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local ignore = false
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ignore = ignore or self.suspending
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ignore = ignore or (vim.fn.pumvisible() == 1 and (vim.v.completed_item).word)
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ignore = ignore or not self.view:ready()
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if ignore then
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self:get_context({ reason = types.cmp.ContextReason.Auto })
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return
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end
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self:autoindent(trigger_event, function()
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local ctx = self:get_context({ reason = types.cmp.ContextReason.Auto })
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debug.log(('ctx: `%s`'):format(ctx.cursor_before_line))
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if ctx:changed(ctx.prev_context) then
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self.view:on_change()
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debug.log('changed')
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if vim.tbl_contains(config.get().completion.autocomplete or {}, trigger_event) then
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self:complete(ctx)
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else
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self.filter.timeout = THROTTLE_TIME
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self:filter()
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end
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else
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debug.log('unchanged')
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end
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end)
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end
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---Cursor moved.
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core.on_moved = function(self)
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local ignore = false
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ignore = ignore or self.suspending
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ignore = ignore or (vim.fn.pumvisible() == 1 and (vim.v.completed_item).word)
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ignore = ignore or not self.view:visible()
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if ignore then
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return
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end
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self:filter()
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end
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---Check autoindent
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---@param trigger_event cmp.TriggerEvent
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---@param callback function
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core.autoindent = function(self, trigger_event, callback)
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if trigger_event ~= types.cmp.TriggerEvent.TextChanged then
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return callback()
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end
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if not api.is_insert_mode() then
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return callback()
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end
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-- Check prefix
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local cursor_before_line = api.get_cursor_before_line()
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local prefix = pattern.matchstr('[^[:blank:]]\\+$', cursor_before_line) or ''
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if #prefix == 0 then
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return callback()
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end
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-- Scan indentkeys.
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for _, key in ipairs(vim.split(vim.bo.indentkeys, ',')) do
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if vim.tbl_contains({ '=' .. prefix, '0=' .. prefix }, key) then
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local release = self:suspend()
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vim.schedule(function() -- Check autoindent already applied.
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if cursor_before_line == api.get_cursor_before_line() then
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feedkeys.call(keymap.autoindent(), 'n', function()
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release()
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callback()
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end)
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else
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callback()
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end
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end)
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return
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end
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end
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-- indentkeys does not matched.
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callback()
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end
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---Invoke completion
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---@param ctx cmp.Context
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core.complete = function(self, ctx)
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if not api.is_suitable_mode() then
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return
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end
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self:set_context(ctx)
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for _, s in ipairs(self:get_sources({ source.SourceStatus.WAITING, source.SourceStatus.COMPLETED })) do
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s:complete(
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ctx,
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(function(src)
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local callback
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callback = function()
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local new = context.new(ctx)
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if new:changed(new.prev_context) and ctx == self.context then
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src:complete(new, callback)
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else
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self.filter.stop()
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self.filter.timeout = DEBOUNCE_TIME
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self:filter()
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end
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end
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return callback
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end)(s)
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)
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end
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self.filter.timeout = THROTTLE_TIME
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self:filter()
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end
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---Update completion menu
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core.filter = async.throttle(
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vim.schedule_wrap(function(self)
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if not api.is_suitable_mode() then
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return
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end
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if self.view:get_active_entry() ~= nil then
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return
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end
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local ctx = self:get_context()
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-- To wait for processing source for that's timeout.
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local sources = {}
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for _, s in ipairs(self:get_sources({ source.SourceStatus.FETCHING, source.SourceStatus.COMPLETED })) do
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local time = SOURCE_TIMEOUT - s:get_fetching_time()
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if not s.incomplete and time > 0 then
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if #sources == 0 then
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self.filter.stop()
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self.filter.timeout = time + 1
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self:filter()
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return
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end
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break
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end
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table.insert(sources, s)
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end
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self.filter.timeout = THROTTLE_TIME
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self.view:open(ctx, sources)
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end),
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THROTTLE_TIME
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)
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---Confirm completion.
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---@param e cmp.Entry
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---@param option cmp.ConfirmOption
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---@param callback function
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core.confirm = function(self, e, option, callback)
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if not (e and not e.confirmed) then
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return callback()
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end
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e.confirmed = true
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debug.log('entry.confirm', e:get_completion_item())
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local release = self:suspend()
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-- Close menus.
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self.view:close()
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feedkeys.call('', 'n', function()
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local ctx = context.new()
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local keys = {}
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table.insert(keys, keymap.backspace(ctx.cursor.character - vim.str_utfindex(ctx.cursor_line, e:get_offset() - 1)))
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table.insert(keys, e:get_word())
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table.insert(keys, keymap.undobreak())
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feedkeys.call(table.concat(keys, ''), 'int')
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end)
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feedkeys.call('', 'n', function()
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local ctx = context.new()
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if api.is_cmdline_mode() then
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local keys = {}
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table.insert(keys, keymap.backspace(ctx.cursor.character - vim.str_utfindex(ctx.cursor_line, e:get_offset() - 1)))
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table.insert(keys, string.sub(e.context.cursor_before_line, e:get_offset()))
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feedkeys.call(table.concat(keys, ''), 'int')
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else
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vim.api.nvim_buf_set_text(0, ctx.cursor.row - 1, e:get_offset() - 1, ctx.cursor.row - 1, ctx.cursor.col - 1, {
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string.sub(e.context.cursor_before_line, e:get_offset()),
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})
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vim.api.nvim_win_set_cursor(0, { e.context.cursor.row, e.context.cursor.col - 1 })
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end
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end)
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feedkeys.call('', 'n', function()
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if #(misc.safe(e:get_completion_item().additionalTextEdits) or {}) == 0 then
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local pre = context.new()
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e:resolve(function()
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local new = context.new()
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local text_edits = misc.safe(e:get_completion_item().additionalTextEdits) or {}
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if #text_edits == 0 then
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return
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end
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local has_cursor_line_text_edit = (function()
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local minrow = math.min(pre.cursor.row, new.cursor.row)
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local maxrow = math.max(pre.cursor.row, new.cursor.row)
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for _, te in ipairs(text_edits) do
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local srow = te.range.start.line + 1
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local erow = te.range['end'].line + 1
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if srow <= minrow and maxrow <= erow then
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return true
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end
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end
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return false
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end)()
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if has_cursor_line_text_edit then
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return
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end
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vim.fn['cmp#apply_text_edits'](new.bufnr, text_edits)
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end)
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else
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vim.fn['cmp#apply_text_edits'](vim.api.nvim_get_current_buf(), e:get_completion_item().additionalTextEdits)
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end
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end)
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feedkeys.call('', 'n', function()
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local ctx = context.new()
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local completion_item = misc.copy(e:get_completion_item())
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if not misc.safe(completion_item.textEdit) then
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completion_item.textEdit = {}
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completion_item.textEdit.newText = misc.safe(completion_item.insertText) or completion_item.word or completion_item.label
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end
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local behavior = option.behavior or config.get().confirmation.default_behavior
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if behavior == types.cmp.ConfirmBehavior.Replace then
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completion_item.textEdit.range = e:get_replace_range()
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else
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completion_item.textEdit.range = e:get_insert_range()
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end
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local diff_before = e.context.cursor.character - completion_item.textEdit.range.start.character
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local diff_after = completion_item.textEdit.range['end'].character - e.context.cursor.character
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local new_text = completion_item.textEdit.newText
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if api.is_insert_mode() then
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local is_snippet = completion_item.insertTextFormat == types.lsp.InsertTextFormat.Snippet
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completion_item.textEdit.range.start.line = ctx.cursor.line
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completion_item.textEdit.range.start.character = ctx.cursor.character - diff_before
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completion_item.textEdit.range['end'].line = ctx.cursor.line
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completion_item.textEdit.range['end'].character = ctx.cursor.character + diff_after
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if is_snippet then
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completion_item.textEdit.newText = ''
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end
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vim.fn['cmp#apply_text_edits'](ctx.bufnr, { completion_item.textEdit })
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local texts = vim.split(completion_item.textEdit.newText, '\n')
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local position = completion_item.textEdit.range.start
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position.line = position.line + (#texts - 1)
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if #texts == 1 then
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position.character = position.character + vim.str_utfindex(texts[1])
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else
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position.character = vim.str_utfindex(texts[#texts])
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end
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local pos = types.lsp.Position.to_vim(0, position)
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vim.api.nvim_win_set_cursor(0, { pos.row, pos.col - 1 })
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if is_snippet then
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config.get().snippet.expand({
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body = new_text,
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insert_text_mode = completion_item.insertTextMode,
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})
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end
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else
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local keys = {}
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table.insert(keys, string.rep(keymap.t('<BS>'), diff_before))
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table.insert(keys, string.rep(keymap.t('<Del>'), diff_after))
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table.insert(keys, new_text)
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feedkeys.call(table.concat(keys, ''), 'int')
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end
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end)
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feedkeys.call('', 'n', function()
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e:execute(vim.schedule_wrap(function()
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release()
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self.event:emit('confirm_done', e)
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if callback then
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callback()
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end
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end))
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end)
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end
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---Reset current completion state
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core.reset = function(self)
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for _, s in pairs(self.sources) do
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s:reset()
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end
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self:get_context() -- To prevent new event
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end
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return core
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