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local guide = require 'parser.guide'
local vm = require 'vm'
local function mergeTypesInLibrary(types)
if type(types) == 'table' then
return table.concat(types, '|')
else
return types or 'any'
end
end
local function asLibrary(source, oop)
if not source.args then
return ''
end
local start = 1
local methodDef
local parent = source.parent
if parent and parent.type == 'setmethod' then
methodDef = true
end
if not methodDef and oop then
start = 2
end
local args = {}
local afterCount = 0
for i = start, #source.args do
local buf = {}
local arg = source.args[i]
local name = arg.name
if arg.optional then
if i == start then
buf[#buf+1] = '['
else
buf[#buf+1] = ' ['
end
end
if i > start then
buf[#buf+1] = ', '
end
if name then
buf[#buf+1] = ('%s: %s'):format(name, mergeTypesInLibrary(arg.type))
else
buf[#buf+1] = ('%s'):format(mergeTypesInLibrary(arg.type))
end
if arg.optional == 'after' then
afterCount = afterCount + 1
elseif arg.optional == 'self' then
buf[#buf+1] = ']'
end
if i == #source.args and afterCount > 0 then
buf[#buf+1] = (']'):rep(afterCount)
end
args[#args+1] = table.concat(buf)
end
return table.concat(args)
end
local function asFunction(source, oop)
if not source.args then
return ''
end
local args = {}
for i = 1, #source.args do
local arg = source.args[i]
local name = arg.name or guide.getName(arg)
if name then
args[i] = ('%s: %s'):format(name, vm.getInferType(arg))
else
args[i] = ('%s'):format(vm.getInferType(arg))
end
end
local methodDef
local parent = source.parent
if parent and parent.type == 'setmethod' then
methodDef = true
end
if not methodDef and oop then
return table.concat(args, ', ', 2)
else
return table.concat(args, ', ')
end
end
return function (source, oop)
if source.type == 'library' then
return asLibrary(source.value, oop)
elseif source.library then
return asLibrary(source, oop)
end
if source.type == 'function' then
return asFunction(source, oop)
end
return ''
end
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