/// <summary> /// 向数组添加添加一个新元素 /// </summary> /// <param name="item"></param> /// <returns></returns> public Statement Add(Statement item) { gItems.Add(item); return item; }
//添加指令到程序 private void AddStatement(string szName, string szVar, string szVal, string szNote) { StatementTypes sType = Statement.GetStatementType(szName); switch (sType) { case StatementTypes.NONE: #region [=====处理空指令=====] Statement st = new Statement(gBlocks[gBlocks.Count - 1], sType, null, null, szNote); gBlocks[gBlocks.Count - 1].Statements.Add(st); break; #endregion case StatementTypes.FLAG: #region [=====处理程序段指令=====] Block bk = new Block(this, szVar, szVal == "1" ? true : false); gBlocks.Add(bk); break; #endregion case StatementTypes.DEF: #region [=====处理字符串预设定指令=====] if (szVar.StartsWith("[") && szVar.EndsWith("]")) { if (szVal.StartsWith("\"") && szVal.EndsWith("\"")) { int nIndex = gMgr.GetIndex(szVar); if (nIndex < 0) { Variable.String var = new Variable.String(szVal.Substring(1, szVal.Length - 2)); var.SetName(szVar); gMgr.Add(var); } else { throw new Exception("内部变量" + szVar + "已经存在,DEF指令不可重复定义字符串"); } } else { throw new Exception("DEF指令的值必须是字符串"); } } else { throw new Exception("DEF指令的变量必须是以\"[\"开头\"]\"结尾的内部变量"); } break; #endregion case StatementTypes.VAR: #region [=====处理变量定义指令=====] string szFirstWords = "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; string szWords = "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; if (szFirstWords.IndexOf(szVar[0].ToString()) < 0) { throw new Exception("自定义变量首字母必须是英文大小写或下划线\"_\"!"); } for (int i = 1; i < szVar.Length; i++) { if (szWords.IndexOf(szVar[i].ToString()) < 0) { throw new Exception("自定义变量必须是由英文大小写或下划线\"_\"或数字组成!"); } } int nVarIndex = gMgr.GetIndex(szVar); if (nVarIndex < 0) { switch (szVal.ToLower()) { case "string": Variable.String str = new Variable.String(); str.SetName(szVar); gMgr.Add(str); break; case "number": Variable.Number num = new Variable.Number(); num.SetName(szVar); gMgr.Add(num); break; case "decimal": Variable.Decimal dec = new Variable.Decimal(); dec.SetName(szVar); gMgr.Add(dec); break; default: throw new Exception("未知变量类型\"" + szVal + "\"!"); } } else { throw new Exception("变量\"" + szVar + "\"已经存在,不可重复定义"); } break; #endregion default: Variable.Object objVar; nVarIndex = gMgr.GetIndex(szVar); if (nVarIndex < 0) { //寄存器指针变量自动建立 if (szVar.StartsWith("{") && szVar.EndsWith("}")) { if (szVar == "{}") { objVar = null; } else { objVar = new Variable.Number(); objVar.SetName(szVar); gMgr.Add(objVar); } } else { throw new Exception("变量\"" + szVar + "\"不存在"); } } else { objVar = gMgr[nVarIndex]; } if (szVal.StartsWith("\"") && szVal.EndsWith("\"")) { //字符串值 Variable.String str = new Variable.String(szVal.Substring(1, szVal.Length - 2)); gMgr.Add(str); Statement stNew = new Statement(gBlocks[gBlocks.Count - 1], sType, objVar, str, szNote); gBlocks[gBlocks.Count - 1].Statements.Add(stNew); } else { double dbTemp = 0; if (double.TryParse(szVal, out dbTemp)) { //数值 Variable.Decimal dec = new Variable.Decimal(dbTemp); gMgr.Add(dec); Statement stNew = new Statement(gBlocks[gBlocks.Count - 1], sType, objVar, dec, szNote); gBlocks[gBlocks.Count - 1].Statements.Add(stNew); } else { int nValIndex = gMgr.GetIndex(szVal); if (nValIndex >= 0) { //变量值 Statement stNew = new Statement(gBlocks[gBlocks.Count - 1], sType, objVar, gMgr[nValIndex], szNote); gBlocks[gBlocks.Count - 1].Statements.Add(stNew); } else { throw new Exception("变量\"" + szVal + "\"不存在"); } } } break; } }