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local buildName = require 'core.hover.name'
local buildArgs = require 'core.hover.args'
local buildReturn = require 'core.hover.return'
local buildTable = require 'core.hover.table'
local infer = require 'vm.infer'
local vm = require 'vm'
local util = require 'utility'
local lang = require 'language'
local config = require 'config'
local files = require 'files'
local guide = require 'parser.guide'
local function asFunction(source, oop)
local name = buildName(source, oop)
local args = buildArgs(source)
local rtn = buildReturn(source)
local lines = {}
lines[1] = string.format('%s%s %s(%s)'
, vm.isAsync(source) and '(async) ' or ''
, oop and '(method)' or 'function'
, name or ''
, oop and table.concat(args, ', ', 2) or table.concat(args, ', ')
)
lines[2] = rtn
return table.concat(lines, '\n')
end
local function asDocTypeName(source)
local defs = vm.getDefs(source)
for _, doc in ipairs(defs) do
if doc.type == 'doc.class' then
return '(class) ' .. doc.class[1]
end
if doc.type == 'doc.alias' then
return '(alias) ' .. doc.alias[1] .. ' ' .. lang.script('HOVER_EXTENDS', infer.getInfer(doc.extends):view())
end
end
end
---@async
local function asValue(source, title)
local name = buildName(source, false) or ''
local ifr = infer.getInfer(source)
local type = ifr:view()
local literal = ifr:viewLiterals()
local cont = buildTable(source)
local pack = {}
pack[#pack+1] = title
pack[#pack+1] = name .. ':'
if vm.isAsync(source, true) then
pack[#pack+1] = 'async'
end
if cont
and ( type == 'table'
or type == 'any'
or type == 'unknown'
or type == 'nil') then
type = nil
end
pack[#pack+1] = type
if literal then
pack[#pack+1] = '='
pack[#pack+1] = literal
end
if cont then
pack[#pack+1] = cont
end
return table.concat(pack, ' ')
end
---@async
local function asLocal(source)
local node
if source.type == 'local'
or source.type == 'self' then
node = source
else
node = source.node
end
if node.type == 'self' then
return asValue(source, '(self)')
end
if node.parent.type == 'funcargs' then
return asValue(source, '(parameter)')
elseif guide.getParentFunction(source) ~= guide.getParentFunction(node) then
return asValue(source, '(upvalue)')
else
return asValue(source, 'local')
end
end
---@async
local function asGlobal(source)
return asValue(source, '(global)')
end
local function isGlobalField(source)
if source.type == 'field'
or source.type == 'method' then
source = source.parent
end
if source.type == 'setfield'
or source.type == 'getfield'
or source.type == 'setmethod'
or source.type == 'getmethod' then
local node = source.node
if node.type == 'setglobal'
or node.type == 'getglobal' then
return true
end
return isGlobalField(node)
elseif source.type == 'tablefield' then
local parent = source.parent
if parent.type == 'setglobal'
or parent.type == 'getglobal' then
return true
end
return isGlobalField(parent)
else
return false
end
end
---@async
local function asField(source)
if isGlobalField(source) then
return asGlobal(source)
end
return asValue(source, '(field)')
end
local function asDocFieldName(source)
local name = source.field[1]
local class
for _, doc in ipairs(source.bindGroup) do
if doc.type == 'doc.class' then
class = doc
break
end
end
local view = infer.getInfer(source.extends):view()
if not class then
return ('(field) ?.%s: %s'):format(name, view)
end
return ('(field) %s.%s: %s'):format(class.class[1], name, view)
end
local function asString(source)
local str = source[1]
if type(str) ~= 'string' then
return ''
end
local len = #str
local charLen = util.utf8Len(str, 1, -1)
if len == charLen then
return lang.script('HOVER_STRING_BYTES', len)
else
return lang.script('HOVER_STRING_CHARACTERS', len, charLen)
end
end
local function formatNumber(n)
local str = ('%.10f'):format(n)
str = str:gsub('%.?0*$', '')
return str
end
local function asNumber(source)
if not config.get(guide.getUri(source), 'Lua.hover.viewNumber') then
return nil
end
local num = source[1]
if type(num) ~= 'number' then
return nil
end
local uri = guide.getUri(source)
local text = files.getText(uri)
if not text then
return nil
end
local raw = text:sub(source.start, source.finish)
if not raw or not raw:find '[^%-%d%.]' then
return nil
end
return formatNumber(num)
end
---@async
return function (source, oop)
if source.type == 'function'
or source.type == 'doc.type.function' then
return asFunction(source, oop)
elseif source.type == 'local'
or source.type == 'self'
or source.type == 'getlocal'
or source.type == 'setlocal' then
return asLocal(source)
elseif source.type == 'setglobal'
or source.type == 'getglobal' then
return asGlobal(source)
elseif source.type == 'getfield'
or source.type == 'setfield'
or source.type == 'getmethod'
or source.type == 'setmethod'
or source.type == 'tablefield'
or source.type == 'field'
or source.type == 'method' then
return asField(source)
elseif source.type == 'string' then
return asString(source)
elseif source.type == 'number'
or source.type == 'integer' then
return asNumber(source)
elseif source.type == 'doc.type.name' then
return asDocTypeName(source)
elseif source.type == 'doc.field' then
return asDocFieldName(source)
end
end
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