/// <summary>
/// 计算一个表达式的值
/// </summary>
/// <param name="exp">The exp.</param>
/// <param name="op">The op.</param>
/// <returns></returns>
public static object ComputeOne(InnerExpression exp, InnerOperate op)
{
//"!", "~", "++", "--", "true", "false"
object oRet = exp.GetValue();
if (op.OperatorDefine == "!")
{
return !(Convert.ToBoolean(oRet));
}
else if (op.OperatorDefine == "~")
{
return ~Convert.ToChar(oRet);
}
else if (op.OperatorDefine == "++" || op.OperatorDefine == "--")
{
if (!Regex.IsMatch(oRet.ToString(), @"^(\+|\-)?[\d\.]+$", RegexOptions.Compiled))
{
throw new InvalidOperationException("数据不支持自增/减运算！");
}
else
{
double odb = double.Parse(oRet.ToString());
return (op.OperatorDefine == "++") ? odb++ : odb--;
}
}
return oRet;
}
/// <summary>
/// 计算两个表达式的值
/// </summary>
public static object ComputeTwo(InnerExpression lExp, InnerOperate op, InnerExpression rExp)
{
object oRet = "";
object lValue = lExp.GetValue();
object rValue = rExp.GetValue();
//OleDbHelper.AppendToFile("~/debug.txt", "\n" + "Left:" + lValue.GetType().ToString()
// + " Right:" + rValue.GetType().ToString());
//Util.Debug(false, lValue.GetType(), rValue.GetType());
//return "";
if (lValue.GetType() != rValue.GetType())
{
try
{
rValue = Convert.ChangeType(rValue, lValue.GetType());
}
catch (Exception)
{
throw new InvalidOperationException(string.Format("{0}与{1}不支持运算,且类型不兼容！", lValue, rValue));
}
}
string opDef = op.OperatorDefine;
#region 处理比较操作
if (ReservedWords.IsStringInRange(opDef, ">", "<", ">=", "<=", "!=", "==", "<>"))
{
if (!(lValue is IComparable) || !(rValue is IComparable))
{
throw new InvalidOperationException(string.Format("{0}与{1}不支持比较！", lValue, rValue));
}
IComparable ica = lValue as IComparable;
IComparable icb = rValue as IComparable;
switch (opDef)
{
case ">": oRet = (ica.CompareTo(icb) > 0); break;
case "<": oRet = (ica.CompareTo(icb) < 0); break;
case ">=": oRet = (ica.CompareTo(icb) >= 0); break;
case "<=": oRet = (ica.CompareTo(icb) <= 0); break;
case "!=": oRet = (ica.CompareTo(icb) != 0); break;
case "<>": oRet = (ica.CompareTo(icb) != 0); break;
case "==": oRet = (ica.CompareTo(icb) == 0); break;
default: break;
}
}
#endregion
#region 双目基本运算
if (ReservedWords.IsStringInRange(opDef, "*", "/", "%", "+", "-"))
{
if (lValue.GetType() == typeof(string))
{
#region 字符型
if (op.OperatorDefine == "+")
{
oRet = String.Concat(lValue.ToString(), rValue.ToString());
}
else
{
oRet = lValue.ToString().Replace(rValue.ToString(), "");
}
#endregion
}
else
{
#region 数字型
double dba = Convert.ToDouble(lValue);
double dbb = Convert.ToDouble(rValue);
switch (opDef)
{
case "*": oRet = (dba * dbb); break;
case "/": oRet = (dba / dbb); break;
case "%": oRet = (dba % dbb); break;
case "+": oRet = (dba + dbb); break;
case "-": oRet = (dba - dbb); break;
default: break;
}
#endregion
}
}
#endregion
//return string.Format("{0}{1}{2}", lExp.GetValue(), op.OperatorDefine , rExp.GetValue());
return oRet;
}
/// <summary>
/// 获取改参数的真实值
/// </summary>
public object GetValue()
{
//Util.Debug(false, "Get Param Value:[" + this.ParamDefine + "] Is Fun:" + IsFunction.ToString());
if (this.ParamDefine == null) return null;
if (IsExpression == true)
{
InnerExpression exp = new InnerExpression(this.ParamDefine, GetResourceDependency());
return exp.GetValue();
}
else if (IsFunction == true)
{
int idx = this.ParamDefine.IndexOf('(');
string funName = (idx == 0) ? null : this.ParamDefine.Substring(0, idx);
//Util.Debug(false, this.ParamDefine.Substring(idx + 1).TrimEnd(')'));
InnerFunction fun = new InnerFunction(funName,
this.ParamDefine.Substring(idx+1).TrimEnd(')'),
this.GetResourceDependency());
return fun.Execute();
}
else
{
#region 字符型
if (this.ParamDefine.StartsWith("\"") && this.ParamDefine.EndsWith("\""))
{
return this.ParamDefine.Trim('"');
}
else if (this.ParamDefine.StartsWith("'") && this.ParamDefine.EndsWith("'"))
{
return this.ParamDefine.Trim('\'');
}
#endregion
if (this.ParamDefine.StartsWith("%") && this.ParamDefine.EndsWith("%"))
{
#region 已定义资源数据
string define = string.Concat("{#", this.ParamDefine, "#}");
if (this.Res != null && Res.IsDefined(define))
{
return Res.GetDefinition(define);
}
else
{
return "";
}
#endregion
}
else if (this.ParamDefine.StartsWith("$") && this.ParamDefine.EndsWith("$"))
{
#region 系统标签
SystemTag sysTag = new SystemTag(string.Concat("{#", this.ParamDefine, "#}"));
sysTag.SetResourceDependency(GetResourceDependency());
return sysTag.ToString();
#endregion
}
else
{
#region 布尔及数字型
if (string.Compare(this.ParamDefine, "true", true) == 0)
{
return true;
}
else if (string.Compare(this.ParamDefine, "false", true) == 0)
{
return false;
}
else
{
if (Regex.IsMatch(this.ParamDefine, @"^[\d,]+$", RegexOptions.Compiled))
{
try
{
double dec = double.Parse(this.ParamDefine);
return dec;
}
catch (Exception)
{
return 0;
}
}
else
{
return this.ParamDefine;
}
}
#endregion
}
}
}