diff options
Diffstat (limited to 'script/vm/function.lua')
| -rw-r--r-- | script/vm/function.lua | 551 |
1 files changed, 551 insertions, 0 deletions
diff --git a/script/vm/function.lua b/script/vm/function.lua new file mode 100644 index 00000000..1ba01363 --- /dev/null +++ b/script/vm/function.lua @@ -0,0 +1,551 @@ +local createMulti = require 'vm.multi' +local valueMgr = require 'vm.value' +local localMgr = require 'vm.local' +local sourceMgr = require 'vm.source' +local listMgr = require 'vm.list' + +local Watch = setmetatable({}, {__mode = 'kv'}) + +---@class emmyFunction +local mt = {} +mt.__index = mt +mt.type = 'function' +mt._runed = 0 +mt._top = 0 + +function mt:getSource() + return listMgr.get(self.source) +end + +function mt:getUri() + local source = self:getSource() + return source and source.uri or '' +end + +function mt:push(source, ischunk) + if self._removed then + return + end + self._top = self._top + 1 + self.locals[self._top] = {} + self.finishs[self._top] = source and source.finish or math.maxinteger +end + +function mt:markChunk() + self.chunk[self._top] = true +end + +function mt:pop() + if self._removed then + return + end + local closed = self.finishs[self._top] + local closedLocals = self.locals[self._top] + self.locals[self._top] = nil + self.chunk[self._top] = nil + for _, loc in pairs(closedLocals) do + loc:close(closed) + end + self._top = self._top - 1 +end + +function mt:saveLocal(name, loc) + if self._removed then + return + end + if loc.type ~= 'local' then + error('saveLocal必须是local') + end + if not loc:getSource() then + return + end + local old = self:loadLocal(name) + if old then + loc:shadow(old) + end + self.locals[self._top][name] = loc +end + +function mt:saveUpvalue(name, loc) + if self._removed then + return + end + if loc.type ~= 'local' then + error('saveLocal必须是local') + end + self.upvalues[name] = loc +end + +function mt:loadLocal(name) + for i = self._top, 1, -1 do + local locals = self.locals[i] + local loc = locals[name] + if loc then + return loc + end + if self.chunk[i] then + break + end + end + local uv = self.upvalues[name] + if uv then + return uv + end + return nil +end + +function mt:eachLocal(callback) + local mark = {} + for i = self._top, 1, -1 do + local locals = self.locals[i] + for name, loc in pairs(locals) do + if not mark[name] then + mark[name] = true + local res = callback(name, loc) + if res ~= nil then + return res + end + end + end + if self.chunk[i] then + break + end + end + for name, loc in pairs(self.upvalues) do + if not mark[name] then + mark[name] = true + local res = callback(name, loc) + if res ~= nil then + return res + end + end + end + return nil +end + +function mt:saveLabel(label) + if self._removed then + return + end + if not self._label then + self._label = {} + end + self._label[#self._label+1] = label +end + +function mt:loadLabel(name) + if not self._label then + return nil + end + for _, label in ipairs(self._label) do + if label:getName() == name then + return label + end + end + return nil +end + +function mt:rawSetReturn(index, value) + if self._removed then + return + end + self:set('hasReturn', true) + if not self.returns then + self.returns = createMulti() + end + if value then + self.returns:set(index, value) + if self._global then + value:markGlobal() + end + end +end + +function mt:setReturn(index, value) + local emmy = self._emmyReturns and self._emmyReturns[index] + if emmy then + if emmy:bindType() or emmy:bindGeneric() then + return + end + end + return self:rawSetReturn(index, value) +end + +function mt:mergeReturn(index, value) + if self._removed then + return + end + local emmy = self._emmyReturns and self._emmyReturns[index] + if emmy then + if emmy:bindType() or emmy:bindGeneric() then + return + end + end + self:set('hasReturn', true) + if not self.returns then + self.returns = createMulti() + end + if value then + if self.returns[index] then + self.returns[index]:mergeValue(value) + self.returns[index] = value + else + self.returns:set(index, value) + end + end + if self._global then + value:markGlobal() + end +end + +function mt:getReturn(index) + if self._removed then + return nil + end + if self.maxReturns and index and self.maxReturns < index then + return nil + end + if not self.returns then + self.returns = createMulti() + end + if index then + return self.returns:get(index) + else + return self.returns + end +end + +function mt:returnDots(index) + if not self.returns then + self.returns = createMulti() + end + --self.returns[index] = createMulti() +end + +function mt:loadDots() + if not self._dots then + self._dots = createMulti() + end + self._dotsLoad = true + return self._dots +end + +function mt:setObject(value, source) + self._objectValue = value + self._objectSource = source +end + +function mt:getObject() + return self._objectSource, self._objectValue +end + +function mt:hasRuned() + return self._runed > 0 +end + +function mt:needSkip() + return self._runed > 3 +end + +---@param vm VM +function mt:run(vm) + if self._removed then + return + end + if not self:getSource() then + return + end + + self._runed = self._runed + 1 + + -- 第一次运行函数时，创建函数的参数 + if self._runed == 1 then + -- 如果是面向对象形式的函数，创建隐藏的参数self + if self._objectSource then + local loc = localMgr.create('self', vm:instantSource(self._objectSource), self._objectValue) + loc:set('hide', true) + loc:set('start', self:getSource().start) + loc:close(self:getSource().finish) + self:saveUpvalue('self', loc) + self.args[#self.args+1] = loc + end + + -- 显性声明的参数 + self:createArgs(vm) + end + + if self:needSkip() then + return + end + + -- 向局部变量中填充参数 + for i, loc in ipairs(self.args) do + loc:setValue(self.argValues[i]) + local emmyParam = self:findEmmyParamByName(loc:getName()) + if emmyParam then + local typeObj = emmyParam:bindType() + if typeObj then + loc:getValue():setEmmy(typeObj) + end + local genericObj = emmyParam:bindGeneric() + if genericObj then + genericObj:setValue(loc:getValue()) + end + end + end + if self._dots then + local emmyParam = self:findEmmyParamByName('...') + self._dots = createMulti() + for i = #self.args + 1, #self.argValues do + local value = self.argValues[i] + self._dots:push(value) + if emmyParam then + local typeObj = emmyParam:bindType() + if typeObj then + value:setEmmy(typeObj) + end + local genericObj = emmyParam:bindGeneric() + if genericObj then + genericObj:setValue(value) + end + end + end + if emmyParam then + local typeObj = emmyParam:bindType() + if typeObj then + self._dots:setEmmy(typeObj) + end + local genericObj = emmyParam:bindGeneric() + if genericObj then + local value = self._dots:first() + if value then + genericObj:setValue(value) + end + end + end + end + + -- 填充返回值 + if self._emmyReturns then + for i, rtn in ipairs(self._emmyReturns) do + local value = vm:createValue('nil', rtn:getSource()) + local typeObj = rtn:bindType() + if typeObj then + value:setEmmy(typeObj) + end + local genericObj = rtn:bindGeneric() + if genericObj then + local destValue = genericObj:getValue() + if destValue then + value:mergeType(destValue) + end + end + self:rawSetReturn(i, value) + end + end +end + +function mt:eachEmmyReturn(callback) + if not self._emmyReturns then + return + end + for _, rtn in ipairs(self._emmyReturns) do + callback(rtn) + end +end + +function mt:setArgs(values) + for i = 1, #self.argValues do + self.argValues[i] = nil + end + for i = 1, #values do + self.argValues[i] = values[i] + end +end + +function mt:findEmmyParamByName(name) + local params = self._emmyParams + if not params then + return nil + end + for i = #params, 1, -1 do + local param = params[i] + if param:getName() == name then + return param + end + end + return nil +end + +function mt:findEmmyParamByIndex(index) + local arg = self.args[index] + if not arg then + return nil + end + local name = arg:getName() + return self:findEmmyParamByName(name) +end + +function mt:addArg(name, source, value, close) + local loc = localMgr.create(name, source, value) + loc:close(close) + self:saveUpvalue(name, loc) + self.args[#self.args+1] = loc + return loc +end + +function mt:createArg(vm, arg, close) + vm:instantSource(arg) + arg:set('arg', self) + if arg.type == 'name' then + vm:instantSource(arg) + local value = valueMgr.create('nil', arg) + self:addArg(arg[1], arg, value, close) + elseif arg.type == '...' then + self._dots = createMulti() + self._dotsSource = arg + end +end + +function mt:createLibArg(arg, source) + if arg.type == '...' then + self._dots = createMulti() + else + local name = arg.name or '_' + local loc = localMgr.create(name, source, valueMgr.create('any', source)) + self:saveUpvalue(name, loc) + self.args[#self.args+1] = loc + end +end + +function mt:hasDots() + return self._dots ~= nil +end + +function mt:createArgs(vm) + if not self:getSource() then + return + end + local args = self:getSource().arg + if not args then + return + end + local close = self:getSource().finish + if args.type == 'list' then + for _, arg in ipairs(args) do + self:createArg(vm, arg, close) + end + else + self:createArg(vm, args, close) + end +end + +function mt:set(name, v) + if not self._flag then + self._flag = {} + end + self._flag[name] = v +end + +function mt:get(name) + if not self._flag then + return nil + end + return self._flag[name] +end + +function mt:getSource() + if self._removed then + return nil + end + return listMgr.get(self.source) +end + +function mt:kill() + if self._removed then + return + end + self._removed = true + listMgr.clear(self.id) +end + +function mt:markGlobal() + if self._global then + return + end + self._global = true + if self.returns then + self.returns:eachValue(function (_, v) + v:markGlobal() + end) + end +end + +function mt:setEmmy(params, returns, overLoads) + if params then + self._emmyParams = params + for _, param in ipairs(params) do + param:getSource():set('emmy function', self) + param:getSource()[1]:set('emmy function', self) + end + end + if returns then + self._emmyReturns = returns + for _, rtn in ipairs(returns) do + rtn:getSource():set('emmy function', self) + end + end + if overLoads then + self._emmyOverLoads = overLoads + for _, ol in ipairs(overLoads) do + ol:getSource():set('emmy function', self) + end + end +end + +---@param comment string +function mt:setComment(comment) + self._comment = comment +end + +---@return string +function mt:getComment() + return self._comment +end + +function mt:getEmmyParams() + return self._emmyParams +end + +function mt:getEmmyOverLoads() + return self._emmyOverLoads +end + +local function create(source) + if not source then + error('Function need source') + end + local id = source.id + if not id then + error('Not instanted source') + end + local self = setmetatable({ + source = id, + locals = {}, + upvalues = {}, + chunk = {}, + finishs = {}, + args = {}, + argValues = {}, + }, mt) + + local id = listMgr.add(self) + self.id = id + Watch[self] = id + return self +end + +return { + create = create, + watch = Watch, +} |