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local findResult = require 'matcher.find_result'
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 > #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)
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 function getValueKind(value, default)
if value.type == 'function' then
return CompletionItemKind.Function
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
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
return function (vm, pos)
local result = findResult(vm, pos)
if not result then
return nil
end
local list = {}
local mark = {}
if result.type == 'local' then
searchLocals(vm, pos, result.key, function (loc)
if mark[loc.key] then
return
end
mark[loc.key] = true
list[#list+1] = {
label = loc.key,
kind = getValueKind(loc.value, CompletionItemKind.Variable),
detail = getDetail(loc),
}
end)
-- 也尝试搜索全局变量
searchFields(result.key, vm.results.locals[1], function (field)
if mark[field.key] then
return
end
mark[field.key] = true
list[#list+1] = {
label = field.key,
kind = getValueKind(field.value, CompletionItemKind.Field),
detail = getDetail(field),
}
end)
elseif result.type == 'field' then
if result.parent.value and result.parent.value.ENV == true then
-- 全局变量也搜索是不是local
searchLocals(vm, pos, result.key, function (loc)
if mark[loc.key] then
return
end
mark[loc.key] = true
list[#list+1] = {
label = loc.key,
kind = getValueKind(loc.value, CompletionItemKind.Variable),
detail = getDetail(loc),
}
end)
end
searchFields(result.key, result.parent, function (field)
if mark[field.key] then
return
end
mark[field.key] = true
list[#list+1] = {
label = field.key,
kind = getValueKind(field.value, CompletionItemKind.Field),
detail = getDetail(field),
}
end)
end
return list
end
|
