public CallResult execute()

in src/main/java/com/ql/util/express/InstructionSet.java [151:188]
34 lines of code
10 McCabe index (conditional complexity)

    public CallResult execute(RunEnvironment environment, InstructionSetContext context, List<String> errorList,
        boolean isReturnLastData) throws Exception {
        //将函数export到上下文中,这儿就是重入也没有关系，不需要考虑并发
        if (cacheFunctionSet == null) {
            Map<String, Object> tempMap = new HashMap<>();
            for (FunctionInstructionSet s : this.functionDefine.values()) {
                tempMap.put(s.name, s.instructionSet);
            }
            cacheFunctionSet = tempMap;
        }

        context.addSymbol(cacheFunctionSet);

        this.executeInnerOriginalInstruction(environment, errorList);
        // 是在执行完所有的指令后结束的代码
        if (!environment.isExit()) {
            if (environment.getDataStackSize() > 0) {
                OperateData tmpObject = environment.pop();
                if (tmpObject == null) {
                    environment.quitExpress(null);
                } else {
                    if (isReturnLastData) {
                        if (tmpObject.getType(context) != null && tmpObject.getType(context).equals(void.class)) {
                            environment.quitExpress(null);
                        } else {
                            environment.quitExpress(tmpObject.getObject(context));
                        }
                    } else {
                        environment.quitExpress(tmpObject);
                    }
                }
            }
        }
        if (environment.getDataStackSize() > 1) {
            throw new QLException("在表达式执行完毕后，堆栈中还存在多个数据");
        }
        return OperateDataCacheManager.fetchCallResult(environment.getReturnValue(), environment.isExit());
    }