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local findResult = require 'matcher.find_result'
local hover = require 'matcher.hover'
local CompletionItemKind = {
Text = 1,
Method = 2,
Function = 3,
Constructor = 4,
Field = 5,
Variable = 6,
Class = 7,
Interface = 8,
Module = 9,
Property = 10,
Unit = 11,
Value = 12,
Enum = 13,
Keyword = 14,
Snippet = 15,
Color = 16,
File = 17,
Reference = 18,
Folder = 19,
EnumMember = 20,
Constant = 21,
Struct = 22,
Event = 23,
Operator = 24,
TypeParameter = 25,
}
local function matchKey(me, other)
if me == other then
return false
end
if me == '' then
return true
end
if #me > #other then
return false
end
local lMe = me:lower()
local lOther = other:lower()
if lMe:sub(1, 1) ~= lOther:sub(1, 1) then
return false
end
if lMe == lOther:sub(1, #lMe) then
return true
end
local used = {
[1] = true,
}
local cur = 2
local lookup
local researched
for i = 2, #lMe do
local c = lMe:sub(i, i)
-- 1. 看当前字符是否匹配
if c == lOther:sub(cur, cur) then
used[cur] = true
goto NEXT
end
-- 2. 看前一个字符是否匹配
if not used[cur-1] then
if c == lOther:sub(cur-1, cur-1) then
used[cur-1] = true
goto NEXT
end
end
-- 3. 向后找这个字
lookup = lOther:find(c, cur+1, true)
if lookup then
cur = lookup
used[cur] = true
goto NEXT
end
-- 4. 重新搜索整个字符串，但是只允许1次，否则失败.如果找不到也失败
if researched then
return false
else
researched = true
for j = 2, cur - 2 do
if c == lOther:sub(j, j) then
used[j] = true
goto NEXT
end
end
return false
end
-- 5. 找到下一个可用的字，如果超出长度就算成功
::NEXT::
repeat
cur = cur + 1
until not used[cur]
if cur > #lOther then
break
end
end
return true
end
local function searchLocals(vm, pos, name, callback)
for _, loc in ipairs(vm.results.locals) do
if loc.source.start == 0 then
goto CONTINUE
end
if loc.source.start <= pos and loc.close >= pos then
if matchKey(name, loc.key) then
callback(loc)
end
end
::CONTINUE::
end
end
local function searchFields(name, parent, callback)
if not parent then
return
end
for key, field in pairs(parent.value.child) do
if type(key) ~= 'string' then
goto CONTINUE
end
if matchKey(name, key) then
callback(field)
end
::CONTINUE::
end
end
local KEYS = {'and', 'break', 'do', 'else', 'elseif', 'end', 'false', 'for', 'function', 'goto', 'if', 'in', 'local', 'nil', 'not', 'or', 'repeat', 'return', 'then', 'true', 'until', 'while', 'toclose'}
local function searchKeyWords(name, callback)
for _, key in ipairs(KEYS) do
if matchKey(name, key) then
callback(key)
end
end
end
local function getKind(var, default)
local value = var.value
if default == CompletionItemKind.Variable then
if value.type == 'function' then
return CompletionItemKind.Function
end
end
if default == CompletionItemKind.Field then
local tp = type(value.value)
if tp == 'number' or tp == 'integer' or tp == 'string' then
return CompletionItemKind.Enum
end
if value.type == 'function' then
if var.parent and var.parent.value and var.parent.value.ENV ~= true then
return CompletionItemKind.Method
else
return CompletionItemKind.Function
end
end
end
return default
end
local function getDetail(var)
local tp = type(var.value.value)
if tp == 'boolean' or tp == 'number' or tp == 'integer' or tp == 'string' then
return ('%s = %q'):format(var.key, var.value.value)
end
return nil
end
local function getDocument(var, source)
if var.value.type == 'function' then
return {
kind = 'markdown',
value = hover(var, source),
}
end
return nil
end
local function searchAsGlobal(vm, pos, result, callback)
searchLocals(vm, pos, result.key, function (var)
callback(var, CompletionItemKind.Variable)
end)
searchFields(result.key, vm.results.locals[1], function (var)
callback(var, CompletionItemKind.Field)
end)
searchKeyWords(result.key, function (name)
callback(name, CompletionItemKind.Keyword)
end)
end
local function searchAsSuffix(result, callback)
searchFields(result.key, result.parent, function (var)
callback(var, CompletionItemKind.Field)
end)
end
return function (vm, pos)
local result, source = findResult(vm, pos)
if not result then
return nil
end
local list = {}
local mark = {}
local function callback(var, defualt)
local key
if type(var) == 'string' then
key = var
else
key = var.key
end
if mark[key] then
return
end
mark[key] = true
if var == key then
list[#list+1] = {
label = key,
kind = defualt,
}
else
list[#list+1] = {
label = var.key,
kind = getKind(var, defualt),
detail = getDetail(var),
documentation = getDocument(var, source),
}
end
end
if result.type == 'local' then
searchAsGlobal(vm, pos, result, callback)
elseif result.type == 'field' then
if result.parent and result.parent.value and result.parent.value.ENV == true then
searchAsGlobal(vm, pos, result, callback)
else
searchAsSuffix(result, callback)
end
end
return list
end
|
