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local core = require 'core'
local parser = require 'parser'
local function posToRange(lines, start, finish)
local start_row, start_col = lines:rowcol(start)
local finish_row, finish_col = lines:rowcol(finish)
return {
start = {
line = start_row - 1,
character = start_col - 1,
},
['end'] = {
line = finish_row - 1,
character = finish_col,
},
}
end
local function findStartPos(pos, buf)
local res = nil
for i = pos-1, 1, -1 do
local c = buf:sub(i, i)
if c:find '[%w_]' then
res = i
else
break
end
end
if not res then
for i = pos-1, 1, -1 do
local c = buf:sub(i, i)
if c:find '[%.%:]' then
res = i
elseif c:find '[%s%c]' then
else
break
end
end
end
if not res then
return pos
end
return res
end
local function findWord(position, text)
local word = text
for i = position-1, 1, -1 do
local c = text:sub(i, i)
if not c:find '[%w_]' then
word = text:sub(i+1, position)
break
end
end
return word:match('^([%w_]*)')
end
return function (lsp, params)
local uri = params.textDocument.uri
local text, oldText = lsp:getText(uri)
if not text then
return nil
end
local lines = parser:lines(text, 'utf8')
-- lua是从1开始的，因此都要+1
local position = lines:positionAsChar(params.position.line + 1, params.position.character)
local word = findWord(position, text)
local startPos = findStartPos(position, text)
local vm = lsp:getVM(uri)
if not vm or not startPos then
vm = lsp:loadVM(uri)
if not vm then
return nil
end
end
startPos = startPos or position
local items = core.completion(vm, startPos, word, oldText)
if not items or #items == 0 then
vm = lsp:loadVM(uri)
if not vm then
return nil
end
startPos = startPos or position
items = core.completion(vm, startPos, word)
if not items or #items == 0 then
return nil
end
end
for i, item in ipairs(items) do
item.sortText = ('%04d'):format(i)
if item.textEdit then
item.textEdit.range = posToRange(lines, item.textEdit.start, item.textEdit.finish)
item.textEdit.start = nil
item.textEdit.finish = nil
end
end
local response = {
isIncomplete = true,
items = items,
}
return response
end
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