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local vm = require 'vm'
local ws = require 'workspace'
local furi = require 'file-uri'
local files = require 'files'
local guide = require 'parser.guide'
local markdown = require 'provider.markdown'
local config = require 'config'
local lang = require 'language'
local function asStringInRequire(source, literal)
local rootPath = ws.path or ''
local parent = source.parent
if parent and parent.type == 'callargs' then
local result, searchers
local call = parent.parent
local func = call.node
local libName = vm.getLibraryName(func)
if not libName then
return
end
if libName == 'require' then
result, searchers = ws.findUrisByRequirePath(literal)
elseif libName == 'dofile'
or libName == 'loadfile' then
result = ws.findUrisByFilePath(literal)
end
if result and #result > 0 then
for i, uri in ipairs(result) do
local searcher = searchers and furi.decode(searchers[uri])
uri = files.getOriginUri(uri)
local path = furi.decode(uri)
if files.eq(path:sub(1, #rootPath), rootPath) then
path = path:sub(#rootPath + 1)
end
path = path:gsub('^[/\\]*', '')
if vm.isMetaFile(uri) then
result[i] = ('* [[meta]](%s)'):format(uri)
elseif searcher then
searcher = searcher:sub(#rootPath + 1)
searcher = ws.normalize(searcher)
result[i] = ('* [%s](%s) %s'):format(path, uri, lang.script('HOVER_USE_LUA_PATH', searcher))
else
result[i] = ('* [%s](%s)'):format(path, uri)
end
end
table.sort(result)
local md = markdown()
md:add('md', table.concat(result, '\n'))
return md:string()
end
end
end
local function asStringView(source, literal)
-- 内部包含转义符？
local rawLen = source.finish - source.start - 2 * #source[2] + 1
if config.config.hover.viewString
and (source[2] == '"' or source[2] == "'")
and rawLen > #literal then
local view = literal
local max = config.config.hover.viewStringMax
if #view > max then
view = view:sub(1, max) .. '...'
end
local md = markdown()
md:add('txt', view)
return md:string()
end
end
local function asString(source)
local literal = guide.getLiteral(source)
if type(literal) ~= 'string' then
return nil
end
return asStringInRequire(source, literal)
or asStringView(source, literal)
end
local function getBindComment(docGroup, base)
local lines = {}
for _, doc in ipairs(docGroup) do
if doc.type == 'doc.comment' then
lines[#lines+1] = doc.comment.text:sub(2)
elseif #lines > 0 and not base then
break
elseif doc == base then
break
else
lines = {}
end
end
if #lines == 0 then
return nil
end
return table.concat(lines, '\n')
end
local function buildEnumChunk(docType, name)
local enums = vm.getDocEnums(docType)
if #enums == 0 then
return
end
local types = {}
for _, tp in ipairs(docType.types) do
types[#types+1] = tp[1]
end
local lines = {}
lines[#lines+1] = ('%s: %s'):format(name, table.concat(types))
for _, enum in ipairs(enums) do
lines[#lines+1] = (' %s %s%s'):format(
(enum.default and '->')
or (enum.additional and '+>')
or ' |',
enum[1],
enum.comment and (' -- %s'):format(enum.comment) or ''
)
end
return table.concat(lines, '\n')
end
local function getBindEnums(docGroup)
local mark = {}
local chunks = {}
local returnIndex = 0
for _, doc in ipairs(docGroup) do
if doc.type == 'doc.param' then
local name = doc.param[1]
if mark[name] then
goto CONTINUE
end
mark[name] = true
chunks[#chunks+1] = buildEnumChunk(doc.extends, name)
elseif doc.type == 'doc.return' then
for _, rtn in ipairs(doc.returns) do
returnIndex = returnIndex + 1
local name = rtn.name and rtn.name[1] or ('(return %d)'):format(returnIndex)
if mark[name] then
goto CONTINUE
end
mark[name] = true
chunks[#chunks+1] = buildEnumChunk(rtn, name)
end
end
::CONTINUE::
end
if #chunks == 0 then
return nil
end
return table.concat(chunks, '\n\n')
end
local function tryDocFieldUpComment(source)
if source.type ~= 'doc.field' then
return
end
if not source.bindGroup then
return
end
local comment = getBindComment(source.bindGroup, source)
return comment
end
local function tryDocComment(source)
if not source.bindDocs then
return
end
local comment = getBindComment(source.bindDocs)
local enums = getBindEnums(source.bindDocs)
local md = markdown()
if comment then
md:add('md', comment)
end
if enums then
md:add('lua', enums)
end
return md:string()
end
local function tryDocOverloadToComment(source)
if source.type ~= 'doc.type.function' then
return
end
local doc = source.parent
if doc.type ~= 'doc.overload'
or not doc.bindSources then
return
end
for _, src in ipairs(doc.bindSources) do
local md = tryDocComment(src)
if md then
return md
end
end
end
return function (source)
if source.type == 'string' then
return asString(source)
end
return tryDocOverloadToComment(source)
or tryDocFieldUpComment(source)
or tryDocComment(source)
end
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