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---@class vm
local vm = require 'vm.vm'
local util = require 'utility'
local compiler = require 'vm.compiler'
local guide = require 'parser.guide'
local localID = require 'vm.local-id'
local globalMgr = require 'vm.global-manager'
local nodeMgr = require 'vm.node'
local files = require 'files'
local simpleSwitch
local function searchGetLocal(source, node, pushResult)
local key = guide.getKeyName(source)
for _, ref in ipairs(node.node.ref) do
if ref.type == 'getlocal'
and not guide.isSet(ref.next)
and guide.getKeyName(ref.next) == key then
pushResult(ref.next)
end
end
end
simpleSwitch = util.switch()
: case 'local'
: call(function (source, pushResult)
if source.ref then
for _, ref in ipairs(source.ref) do
if ref.type == 'setlocal'
or ref.type == 'getlocal' then
pushResult(ref)
end
end
end
end)
: case 'getlocal'
: case 'setlocal'
: call(function (source, pushResult)
simpleSwitch('local', source.node, pushResult)
end)
: case 'field'
: call(function (source, pushResult)
local parent = source.parent
if parent.type ~= 'tablefield' then
simpleSwitch(parent.type, parent, pushResult)
end
end)
: case 'setfield'
: case 'getfield'
: call(function (source, pushResult)
local node = source.node
if node.type == 'getlocal' then
searchGetLocal(source, node, pushResult)
return
end
end)
: case 'getindex'
: case 'setindex'
: call(function (source, pushResult)
local node = source.node
if node.type == 'getlocal' then
searchGetLocal(source, node, pushResult)
end
end)
: case 'goto'
: call(function (source, pushResult)
if source.node then
simpleSwitch('label', source.node, pushResult)
pushResult(source.node)
end
end)
: case 'label'
: call(function (source, pushResult)
pushResult(source)
if source.ref then
for _, ref in ipairs(source.ref) do
pushResult(ref)
end
end
end)
local function searchField(source, pushResult)
local key = guide.getKeyName(source)
---@param src parser.object
local function checkDef(src)
for _, def in ipairs(vm.getDefs(src)) do
if def == source then
pushResult(src)
return
end
end
end
local pat = '[:.]%s*' .. key
local function findWord(uri)
local text = files.getText(uri)
if not text then
return
end
if not text:match(pat) then
return
end
local state = files.getState(uri)
if not state then
return
end
guide.eachSourceType(state.ast, 'getfield', function (src)
if src.field[1] == key then
checkDef(src)
end
end)
guide.eachSourceType(state.ast, 'getmethod', function (src)
if src.method[1] == key then
checkDef(src)
end
end)
guide.eachSourceType(state.ast, 'getindex', function (src)
if src.index.type == 'string' and src.index[1] == key then
checkDef(src)
end
end)
end
for uri in files.eachFile(guide.getUri(source)) do
if not vm.isMetaFile(uri) then
findWord(uri)
end
end
end
local searchByParentNode
local nodeSwitch = util.switch()
: case 'field'
: case 'method'
: call(function (source, pushResult)
searchByParentNode(source.parent, pushResult)
end)
: case 'getfield'
: case 'setfield'
: case 'getmethod'
: case 'setmethod'
: case 'getindex'
: case 'setindex'
: call(function (source, pushResult)
local key = guide.getKeyName(source)
if type(key) ~= 'string' then
return
end
local parentNode = compiler.compileNode(source.node)
if not parentNode then
return
end
searchField(source, pushResult)
end)
: case 'tablefield'
: case 'tableindex'
: call(function (source, pushResult)
searchField(source, pushResult)
end)
---@param source parser.object
---@param pushResult fun(src: parser.object)
local function searchBySimple(source, pushResult)
simpleSwitch(source.type, source, pushResult)
end
---@param source parser.object
---@param pushResult fun(src: parser.object)
local function searchByLocalID(source, pushResult)
local idSources = localID.getSources(source)
if not idSources then
return
end
for _, src in ipairs(idSources) do
if not guide.isSet(src) then
pushResult(src)
end
end
end
---@param source parser.object
---@param pushResult fun(src: parser.object)
function searchByParentNode(source, pushResult)
nodeSwitch(source.type, source, pushResult)
end
local function searchByNode(source, pushResult)
local node = compiler.compileNode(source)
if not node then
return
end
for n in nodeMgr.eachNode(node) do
if n.type == 'global' then
for _, get in ipairs(n:getGets()) do
pushResult(get)
end
end
end
end
function vm.getRefs(source)
local results = {}
local mark = {}
local hasLocal
local function pushResult(src)
if src.type == 'local' and not src.dummy then
if hasLocal then
return
end
hasLocal = true
end
if not mark[src] then
mark[src] = true
results[#results+1] = src
end
end
searchBySimple(source, pushResult)
searchByLocalID(source, pushResult)
searchByParentNode(source, pushResult)
searchByNode(source, pushResult)
return results
end
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