/// <summary>
/// 添加一个函数到符号表
/// </summary>
/// <param name="fc">待添加函数单元</param>
/// <returns>操作成功与否</returns>
public bool addFunction(FunctionCell fc)
{
if (fc == null || this.isExistFunction(fc.callname))
{
return(false);
}
this.callfunContainer.Add(fc);
return(true);
}
/// <summary>
/// 初始化代码管理器，获得一棵带有root和main函数块的树
/// </summary>
public void initCodeTree()
{
// 建立一个根节点
this.parseTree = new KagaNode("TreeRoot", NodeType.PILE__BLOCK__ROOT, 0, 0, null);
// 为根节点追加一个main函数节点
KagaNode mainFunNode = new KagaNode("main", NodeType.PILE__BLOCK__FUNCTION, 1, 0, this.parseTree);
FunctionCell mainFunCell = new FunctionCell("main", null, VarType.VOID);
mainFunNode.funBinding = mainFunCell;
this.parseTree.children.Add(mainFunNode);
// 为main函数节点追加代码块光标节点、代码块右边界
mainFunNode.children.Add(new KagaNode("main___PADDING_CURSOR", NodeType.PILE__PADDING_CURSOR, 2, 0, mainFunNode));
mainFunNode.children.Add(new KagaNode("main___BRIGHT_BRUCKET", NodeType.PILE__BRIGHT_BRUCKET, 2, 1, mainFunNode));
// 追加main函数到符号管理器
symbolMana.addFunction(mainFunCell);
}
/// <summary>
/// 修改一个函数的签名
/// </summary>
/// <param name="fname">查找函数的名称</param>
/// <param name="nfc">待复制的新函数签名的函数单元</param>
/// <returns>操作成功与否</returns>
public bool editFunction(string fname, FunctionCell nfc)
{
// 更新
FunctionCell ofc = this.getFunction(fname);
if (ofc == null)
{
return(false);
}
// 复制一个备份等待需要的回滚
FunctionCell backupOfc = new FunctionCell("_BACKUP_NODE");
backupOfc.editSign(ofc);
ofc.editSign(nfc);
// 检查是否有重复
bool rollbackFlag = false;
for (int i = 0; i < this.callfunContainer.Count; i++)
{
for (int j = i + 1; j < this.callfunContainer.Count; j++)
{
if (this.callfunContainer[i].callname == this.callfunContainer[j].callname)
{
rollbackFlag = true;
// 弹出两层循环
i = j = this.callfunContainer.Count + 1;
}
}
}
// 如果重名就要回滚操作
if (rollbackFlag == true)
{
ofc.editSign(backupOfc);
return(false);
}
return(true);
}
