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|
local util = require 'utility'
local nodeMgr = require 'vm.node'
local config = require 'config'
local guide = require 'parser.guide'
---@class vm.infer-manager
local m = {}
local inferSorted = {
['nil'] = 100,
}
local viewNodeMap = util.switch()
: case 'nil'
: case 'boolean'
: case 'string'
: case 'function'
: case 'integer'
: call(function (source, options)
return source.type
end)
: case 'number'
: call(function (source, options)
options['hasNumber'] = true
return source.type
end)
: case 'table'
: call(function (source, options)
options['hasTable'] = true
end)
: case 'local'
: call(function (source, options)
if source.parent == 'funcargs' then
options['isParam'] = true
else
options['isLocal'] = true
end
end)
: case 'global'
: call(function (source, options)
if source.cate == 'type' then
options['hasClass'] = true
return source.name
end
end)
: case 'doc.type.integer'
: call(function (source, options)
return ('%d'):format(source[1])
end)
: case 'doc.type.name'
: call(function (source, options)
options['hasClass'] = true
if source.signs then
local buf = {}
for i, sign in ipairs(source.signs) do
buf[i] = m.viewType(sign)
end
return ('%s<%s>'):format(source[1], table.concat(buf, ', '))
else
return source[1]
end
end)
: case 'doc.type.array'
: call(function (source, options)
options['hasClass'] = true
return m.viewType(source.node) .. '[]'
end)
: case 'doc.type.table'
: call(function (source, options)
options['hasTable'] = true
end)
: case 'doc.type.enum'
: call(function (source, options)
return ('%q'):format(source[1])
end)
: case 'doc.type.function'
: call(function (source, options)
local args = {}
local rets = {}
local argView = ''
local regView = ''
for i, arg in ipairs(source.args) do
args[i] = string.format('%s%s: %s'
, arg.name[1]
, arg.optional and '?' or ''
, m.viewType(arg)
)
end
if #args > 0 then
argView = table.concat(args, ', ')
end
for i, ret in ipairs(source.returns) do
rets[i] = string.format('%s%s'
, m.viewType(ret)
, ret.optional and '?' or ''
)
end
if #rets > 0 then
regView = ':' .. table.concat(rets, ', ')
end
return ('fun(%s)%s'):format(argView, regView)
end)
: getMap()
---@param node vm.node
---@return string?
local function viewNode(node, options)
if viewNodeMap[node.type] then
return viewNodeMap[node.type](node, options)
end
end
local function eraseAlias(node, viewMap, options)
for n in nodeMgr.eachNode(node) do
if n.type == 'global' and n.cate == 'type' then
for _, set in ipairs(n:getSets()) do
if set.type == 'doc.alias' then
if options['expandAlias'] then
viewMap[n.name] = nil
else
for _, ext in ipairs(set.extends.types) do
local view = viewNode(ext, {})
if view and view ~= n.name then
viewMap[view] = nil
end
end
end
end
end
end
end
end
---@param source parser.object
---@return table<string, boolean>
function m.getViews(source)
local compiler = require 'vm.compiler'
local node = compiler.compileNode(source)
if node.type == 'union' and node.lastViews then
return node.lastViews
end
local views = {}
local options = {}
options['expandAlias'] = config.get(guide.getUri(source), 'Lua.hover.expandAlias')
if node.type == 'union' then
node.lastViews = views
end
for n in nodeMgr.eachNode(node) do
local view = viewNode(n, options)
if view then
views[view] = true
end
end
if options['hasNumber'] then
views['integer'] = nil
end
if options['hasTable'] and not options['hasClass'] then
views['table'] = true
end
if options['hasClass'] then
eraseAlias(node, views, options)
end
return views
end
---@param source parser.object
---@return string
function m.viewType(source)
local views = m.getViews(source)
if views['any'] then
return 'any'
end
if not next(views) then
return 'unknown'
end
local array = {}
for view in pairs(views) do
array[#array+1] = view
end
table.sort(array, function (a, b)
local sa = inferSorted[a] or 0
local sb = inferSorted[b] or 0
if sa == sb then
return a < b
end
return sa < sb
end)
local view = table.concat(array, '|')
return view
end
return m
|
