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local files = require 'files'
local vm = require 'vm'
local util = require 'utility'
local findSource = require 'core.find-source'
local guide = require 'parser.guide'
local Forcing
local function trim(str)
return str:match '^%s*(%S+)%s*$'
end
local function isValidName(str)
if not str then
return false
end
return str:match '^[%a_][%w_]*$'
end
local function isValidGlobal(str)
if not str then
return false
end
for s in str:gmatch '[^%.]*' do
if not isValidName(trim(s)) then
return false
end
end
return true
end
local function isValidFunctionName(str)
if isValidGlobal(str) then
return true
end
local offset = str:find(':', 1, true)
if not offset then
return false
end
return isValidGlobal(trim(str:sub(1, offset-1)))
and isValidName(trim(str:sub(offset+1)))
end
local function isFunctionGlobalName(source)
local parent = source.parent
if parent.type ~= 'setglobal' then
return false
end
local value = parent.value
if not value.type ~= 'function' then
return false
end
return value.start <= parent.start
end
local function renameLocal(source, newname, callback)
if isValidName(newname) then
callback(source, source.start, source.finish, newname)
return
end
callback(source, source.start, source.finish, newname)
end
local function renameField(source, newname, callback)
if isValidName(newname) then
callback(source, source.start, source.finish, newname)
return true
end
local parent = source.parent
if parent.type == 'setfield'
or parent.type == 'getfield' then
local dot = parent.dot
local newstr = '[' .. util.viewString(newname) .. ']'
callback(source, dot.start, source.finish, newstr)
elseif parent.type == 'tablefield' then
local newstr = '[' .. util.viewString(newname) .. ']'
callback(source, source.start, source.finish, newstr)
elseif parent.type == 'getmethod' then
callback(source, source.start, source.finish, newname)
elseif parent.type == 'setmethod' then
local uri = guide.getUri(source)
local text = files.getText(uri)
local state = files.getState(uri)
if not state or not text then
return false
end
local func = parent.value
-- function mt:name () end --> mt['newname'] = function (self) end
local startOffset = guide.positionToOffset(state, parent.start) + 1
local finishOffset = guide.positionToOffset(state, parent.node.finish)
local newstr = string.format('%s[%s] = function '
, text:sub(startOffset, finishOffset)
, util.viewString(newname)
)
callback(source, func.start, parent.finish, newstr)
local finishOffset = guide.positionToOffset(state, parent.finish)
local pl = text:find('(', finishOffset, true)
if pl then
local insertPos = guide.offsetToPosition(state, pl)
if text:find('^%s*%)', pl + 1) then
callback(source, insertPos, insertPos, 'self')
else
callback(source, insertPos, insertPos, 'self, ')
end
end
end
return true
end
local function renameGlobal(source, newname, callback)
if isValidGlobal(newname) then
callback(source, source.start, source.finish, newname)
return true
end
if isValidFunctionName(newname) then
callback(source, source.start, source.finish, newname)
return true
end
local newstr = '_ENV[' .. util.viewString(newname) .. ']'
-- function name () end --> _ENV['newname'] = function () end
if source.value and source.value.type == 'function'
and source.value.start < source.start then
callback(source, source.value.start, source.finish, newstr .. ' = function ')
return true
end
callback(source, source.start, source.finish, newstr)
return true
end
local function ofLocal(source, newname, callback)
renameLocal(source, newname, callback)
if source.ref then
for _, ref in ipairs(source.ref) do
renameLocal(ref, newname, callback)
end
end
if source.parent.type == 'funcargs'
and source.bindDocs then
for _, doc in ipairs(source.bindDocs) do
if doc.type == 'doc.param'
and doc.param[1] == source[1] then
callback(doc.param, doc.param.start, doc.param.finish, newname)
end
end
end
end
local function ofFieldThen(key, src, newname, callback)
if vm.getKeyName(src) ~= key then
return
end
if src.type == 'tablefield'
or src.type == 'getfield'
or src.type == 'setfield' then
src = src.field
elseif src.type == 'tableindex'
or src.type == 'getindex'
or src.type == 'setindex' then
src = src.index
elseif src.type == 'getmethod'
or src.type == 'setmethod' then
src = src.method
end
if src.type == 'string' then
local quo = src[2]
local text = util.viewString(newname, quo)
callback(src, src.start, src.finish, text)
return
elseif src.type == 'field'
or src.type == 'method' then
local suc = renameField(src, newname, callback)
if not suc then
return
end
elseif src.type == 'setglobal'
or src.type == 'getglobal' then
local suc = renameGlobal(src, newname, callback)
if not suc then
return
end
elseif src.type == 'doc.field' then
local suc = renameField(src.field, newname, callback)
if not suc then
return
end
end
end
---@async
local function ofField(source, newname, callback)
local key = guide.getKeyName(source)
local refs = vm.getRefs(source)
for _, ref in ipairs(refs) do
ofFieldThen(key, ref, newname, callback)
end
end
---@async
local function ofGlobal(source, newname, callback)
local key = guide.getKeyName(source)
if not key then
return
end
local global = vm.getGlobal('variable', key)
if not global then
return
end
local refs = vm.getRefs(source)
for _, ref in ipairs(refs) do
ofFieldThen(key, ref, newname, callback)
end
end
---@async
local function ofLabel(source, newname, callback)
for _, src in ipairs(vm.getRefs(source)) do
callback(src, src.start, src.finish, newname)
end
end
---@async
local function ofDocTypeName(source, newname, callback)
local oldname = source[1]
local global = vm.getGlobal('type', oldname)
if not global then
return
end
local uri = guide.getUri(source)
for _, doc in ipairs(global:getSets(uri)) do
if doc.type == 'doc.class' then
callback(doc, doc.class.start, doc.class.finish, newname)
end
if doc.type == 'doc.alias' then
callback(doc, doc.alias.start, doc.alias.finish, newname)
end
if doc.type == 'doc.enum' then
callback(doc, doc.enum.start, doc.enum.finish, newname)
end
end
local refs = vm.getRefs(source)
for _, doc in ipairs(refs) do
if doc.type == 'doc.type.name' then
callback(doc, doc.start, doc.finish, newname)
end
end
end
local function ofDocParamName(source, newname, callback)
callback(source, source.start, source.finish, newname)
local doc = source.parent
local src = doc.bindSource
if src then
if src.type == 'local'
and src.parent.type == 'funcargs'
and src[1] == source[1] then
renameLocal(src, newname, callback)
if src.ref then
for _, ref in ipairs(src.ref) do
renameLocal(ref, newname, callback)
end
end
end
end
end
---@async
local function rename(source, newname, callback)
if source.type == 'label'
or source.type == 'goto' then
return ofLabel(source, newname, callback)
elseif source.type == 'local' then
return ofLocal(source, newname, callback)
elseif source.type == 'setlocal'
or source.type == 'getlocal' then
return ofLocal(source.node, newname, callback)
elseif source.type == 'field'
or source.type == 'method'
or source.type == 'index' then
return ofField(source.parent, newname, callback)
elseif source.type == 'setglobal'
or source.type == 'getglobal' then
return ofGlobal(source, newname, callback)
elseif source.type == 'doc.class.name'
or source.type == 'doc.type.name'
or source.type == 'doc.alias.name'
or source.type == 'doc.enum.name' then
return ofDocTypeName(source, newname, callback)
elseif source.type == 'doc.param.name' then
return ofDocParamName(source, newname, callback)
elseif source.type == 'doc.field.name' then
return ofField(source, newname, callback)
elseif source.type == 'string'
or source.type == 'number'
or source.type == 'integer'
or source.type == 'boolean' then
local parent = source.parent
if not parent then
return
end
if parent.type == 'setindex'
or parent.type == 'getindex'
or parent.type == 'tableindex' then
return ofField(parent, newname, callback)
end
end
end
local function prepareRename(source)
if source.type == 'label'
or source.type == 'goto'
or source.type == 'local'
or source.type == 'setlocal'
or source.type == 'getlocal'
or source.type == 'field'
or source.type == 'method'
or source.type == 'tablefield'
or source.type == 'setglobal'
or source.type == 'getglobal'
or source.type == 'doc.class.name'
or source.type == 'doc.type.name'
or source.type == 'doc.alias.name'
or source.type == 'doc.enum.name'
or source.type == 'doc.param.name'
or source.type == 'doc.field.name' then
return source, source[1]
elseif source.type == 'string'
or source.type == 'number'
or source.type == 'integer'
or source.type == 'boolean' then
local parent = source.parent
if not parent then
return nil
end
if parent.type == 'setindex'
or parent.type == 'getindex'
or parent.type == 'tableindex' then
return source, source[1]
end
return nil
end
return nil
end
local accept = {
['label'] = true,
['goto'] = true,
['local'] = true,
['setlocal'] = true,
['getlocal'] = true,
['field'] = true,
['method'] = true,
['tablefield'] = true,
['setglobal'] = true,
['getglobal'] = true,
['string'] = true,
['boolean'] = true,
['number'] = true,
['integer'] = true,
['doc.class.name'] = true,
['doc.type.name'] = true,
['doc.alias.name'] = true,
['doc.param.name'] = true,
['doc.enum.name'] = true,
['doc.field.name'] = true,
}
local m = {}
---@async
function m.rename(uri, pos, newname)
if not newname then
return nil
end
local ast = files.getState(uri)
if not ast then
return nil
end
local source = findSource(ast, pos, accept)
if not source then
return nil
end
local results = {}
local mark = {}
rename(source, newname, function (target, start, finish, text)
local turi = guide.getUri(target)
if not turi then
return
end
local uid = turi .. start
if mark[uid] then
return
end
mark[uid] = true
if files.isLibrary(turi, true) then
return
end
results[#results+1] = {
start = start,
finish = finish,
text = text,
uri = turi,
}
end)
if Forcing == false then
Forcing = nil
return nil
end
if #results == 0 then
return nil
end
return results
end
function m.prepareRename(uri, pos)
local ast = files.getState(uri)
if not ast then
return nil
end
local source = findSource(ast, pos, accept)
if not source then
return
end
local res, text = prepareRename(source)
if not res then
return nil
end
return {
start = source.start,
finish = source.finish,
text = text,
}
end
return m
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