TypeScript之调用栈的实现_javascript技巧

class CallStackTool{
  private static index:number = 0;
  public static printCallStack (count:number , simple: boolean = true):void {
    let caller:Function = arguments.callee.caller;
    let i:number = 0;
    count = count || 10;
    CallStackTool.index ++;
    if( CallStackTool.index > 500 ) CallStackTool.index = 1;
    console.log(`***-----------------${CallStackTool.index}Start----------------------- **`);
    while (caller && i < count) {
      console.log(`${(i+1)}: \n ${CallStackTool.getFunctionName(caller,simple)}`);
      caller = caller.caller;
      i++;
    }
    console.log(`***-----------------${CallStackTool.index}End----------------------- **`);
  }

  private static getFunctionName(func:any,simple: boolean):string {
    if( simple ){
      let name:any;
      if ( typeof func == 'function' ) {
        name = ('' + func).match(/function\s*\((\s*\$*\S+\s*,)*(\s*\$*\S+\s*)?\)/g);
        let $result: string = name && name[0];
        if( $result != `function ()` ){
          return $result;
        }
      }
    }
    return func.toString();
  }
}

class Test2CallStack{

  public add( i:number, b:number ):number{
    CallStackTool.printCallStack(2,true);
    return i +b;
  }

  public a( c:number, q:number ): number{
    return this.add(c,q);
  }

  public print() : void{
    console.log(`${this.a(1,1)}`);
  }
}