求教！哪位大神给我讲解一下这一串代码是什么意思？新手上路，很着急！！！！！！！

treenode thelist = getvarnode(current,"componentlist");
  treenode thesum = getvarnode(current,"targetcomponentsum");
$ ~1 y+ c' F$ O; I0 S" j( y! J$ ^' c  setnodenum(thesum,0);
' `9 [5 D0 u% G+ p; P
   {
4 ^& [) J( p! ^2 J     setnodenum(cellrowcolumn(thelist,1,1),getlabelnum(first(current),"1"));
    inc(thesum,getlabelnum(first(current),"1"));
; j* n# `# ?' M4 D8 T     setnodenum(cellrowcolumn(thelist,2,1),getlabelnum(first(current),"2"));
    inc(thesum,getlabelnum(first(current),"2"));
     setnodenum(cellrowcolumn(thelist,3,1),getlabelnum(first(current),"3"));
; J: S) X6 f0 v! Z0 ~- I/ B& `    inc(thesum,getlabelnum(first(current),"3"));
     setnodenum(cellrowcolumn(thelist,4,1),getlabelnum(first(current),"4"));
    inc(thesum,getlabelnum(first(current),"4"));
: A. K' P0 `$ o8 C! G  }
4 c& y4 t4 f2 I5 {}

你的代码不全啊，但是大概就是根据当前实体的标签值设置属性节点“componentlist”（好像是个表格）的值，，然后将节点targetcomponentsum的值加対应标签的值。

2# missman
. Y6 N; s( q$ [4 T+ }
. J, u4 v2 A1 s我这新手，主要是不明白  setnodenum 、getlabelnum这之类的具体什么含义，有什么作用