如何将整数数组从Tcl传递到C++

How to pass array of integers from Tcl to C++?

本文关键字：C++ Tcl 整数 数组      更新时间：2023-10-16

如何将Tcl数组发送到C++？我已经写了以下代码：

Tcl：

set ns [new Simulator]

    set n [$ns node]
$n set X_ 100
$n set Y_ 30
$n set Z_ 0
set x [$n set X_]
set y [$n set Y_]
set z [$n set Z_]
#after 2000
set b {12 2 3 4 5}
set aa [new "Application/Trust/ITLeach"]
$aa set bufer_ 1
$aa set allnode_ $n
$aa set X_ $x
$aa set Y_ $y
$aa set Z_ $z
$aa set ClausterHeadID_   [array get b] **#send array to c++**
$ns at 0.0 "$aa start"
puts $b
$ns run

ITLEACH.h：

#ifndef ns_ITLeach_h
#define ns_ITLeach_h
#include "app.h"
#include "node.h"
#include "tcl.h"
#include "mobilenode.h"
#include <iostream>
#include <fstream>
class ITLeach;
#define TCL_OK 0
class ITLeach : public  Application {
 public:
    ITLeach();

  virtual int command(int argc, const char*const* argv);
 protected:
  // need to define recv and timeout
  void start();
  int Buffer;
  MobileNode * node ;
  ofstream nodeSetting;
  double XPos ;
  double YPos ;
  double ZPos ;
  int ClausterHeadID [] ; //int array that passed from tcl file
  int  ClausterID [] ;
  int id_node;
};

#endif

ITLECH.cc：

/*
 * ITLeach.cc
 *
 *  Created on: Oct 29, 2013
 *      Author: root
 */
#include "ITLeach.h"
static class ITLeachClass : public TclClass {
public:
    ITLeachClass() : TclClass("Application/Trust/ITLeach") {}
    TclObject* create(int, const char*const*) {
        return (new ITLeach());
    }
} class_app_ITLeach;
ITLeach::ITLeach() : Application() {
    Tcl_Obj *baObj = Tcl_NewObj();
bind("bufer_",&Buffer);
bind("allnode_",&node);
bind("X_",&XPos);
bind("Y_",&YPos);
bind("Z_",&ZPos);
bind("ClausterHeadID_",(int *) &ClausterHeadID); // call array from tcl
bind("ClausterID_",ClausterID);
bind("id_",&id_node);
}
int ITLeach::command(int argc, const char*const* argv) {
        if (strcmp(argv[1], "start") == 0) {
            ITLeach::start();
            return(TCL_OK);
        }

      return(ITLeach::command(argc, argv));
    }
void ITLeach::start()
{
//double x=0, y =0 , z =0;
    nodeSetting.open("./leachnode.txt",fstream::app);
        //node = (MobileNode*)Node::get_node_by_address(i);
//node->location()->getLocation(x,y,z);
//node->getLoc(&x,&y,&z);
        nodeSetting << "id " << id_node << " x "<< XPos << " y " << YPos << " z " << ZPos <<"n";

    nodeSetting.close();
    printf(" claster head number : %d n" ,ClausterHeadID[1]);
    printf("node number is : %d n",Buffer);
}

我用以下代码从Tcl发送数组：

$aa set ClausterHeadID_   [array get b] **#send array to c++**

并用以下代码从C++接收数组：

bind("ClausterHeadID_",(int *) &ClausterHeadID); // call array from tcl

但是它不起作用，请帮帮我。

如果已将该命令绑定到字符串接口(即，参数通过int argc, char **argv到达(，则使用Tcl_SplitList()分解相关参数(可能是argv[argc-1]，即最后一个参数(，然后使用Tcl_GetInt()从每个值中检索一个整数。这些整数是Tcl列表的成员。

int listc;
char **listv;
if (Tcl_SplitList(interp, argv[argc-1], &listc, &listv) != TCL_OK) {
    // wasn't a valid list!
    return TCL_ERROR;
}
std::vector<int> theArray(listc, 0);
for (int i=0 ; i<listc ; i++) {
    if (Tcl_GetInt(interp, listv[i], &theArray[i]) != TCL_OK) {
        // wasn't an int in the list!
        return TCL_ERROR;
    }
}

这不是很快！为了获得更快的方法，您需要使用基于Tcl_Obj的API(Tcl_Obj是基本的Tcl第一类值类型(，首先正确注册实现函数。之后，转换上述代码相当容易：

int listc;
Tcl_Obj **listv;
if (Tcl_ListObjGetElements(interp, argv[argc-1], &listc, &listv) != TCL_OK) {
    // wasn't a valid list!
    return TCL_ERROR;
}
std::vector<int> theArray(listc, 0);
for (int i=0 ; i<listc ; i++) {
    if (Tcl_GetIntFromObj(interp, listv[i], &theArray[i]) != TCL_OK) {
        // wasn't an int in the list!
        return TCL_ERROR;
    }
}

有什么不同？Tcl_Obj知道它持有的是字符串还是整数(或浮点或任何其他东西(，因此Tcl运行时通常不需要重新分析或键入转换值，而如果所有东西都是字符串，则需要进行大量转换。(在Tcl中通常说">Everything is a string"，但这是不准确的；正确的版本是">Everything has a perfect string serialization，or is a named entity，但这更为冗长。(

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