private ParamObjectCollection GetParams(List <ExpTreeNode> arrParams, CalculateContext calcContext)
{
List <ParamObject> list = new List <ParamObject>();
for (int i = 0; i < arrParams.Count; i++)
{
ExpTreeNode node = (ExpTreeNode)arrParams[i];
list.Add(new ParamObject(VExp(node, calcContext), node.Position, i));
}
return(new ParamObjectCollection(list));
}
/// <summary>
/// 获取树结点值
/// </summary>
/// <param name="tree">二叉树节点</param>
/// <param name="calcUDF">用户自定义函数的委托</param>
/// <param name="callerContext">调用者上下文</param>
/// <param name="optimize">最优化选项</param>
/// <returns>树结点值</returns>
public object GetValue(ExpTreeNode tree, CalculateUserFunction calcUDF, object callerContext, bool optimize)
{
object result = null;
if (tree != null)
{
CalculateContext calcContext = new CalculateContext();
calcContext.Optimize = optimize;
calcContext.CallerContxt = callerContext;
calcContext.CalculateUserFunction = calcUDF;
result = VExp(tree, calcContext);
}
return(result);
}
/// <summary>
/// 获取树结点值
/// </summary>
/// <param name="tree">二叉树节点</param>
/// <param name="builtInFunctionsWrapper">包含内置函数的实现类</param>
/// <param name="callerContext">调用者上下文</param>
/// <param name="optimize">最优化选项</param>
/// <returns>树结点值</returns>
public object GetValue(ExpTreeNode tree, object builtInFunctionsWrapper, object callerContext, bool optimize)
{
object result = null;
if (tree != null)
{
CalculateContext calcContext = new CalculateContext();
calcContext.Optimize = optimize;
calcContext.CallerContxt = callerContext;
calcContext.BuiltInFunctionsWrapper = builtInFunctionsWrapper;
result = VExp(tree, calcContext);
}
return(result);
}
/// <summary>
/// 获取树结点值
/// </summary>
/// <param name="tree">二叉树节点</param>
/// <param name="builtInFunctionsWrapper">包含内置函数的实现类</param>
/// <param name="callerContext">调用者上下文</param>
/// <param name="optimize">最优化选项</param>
/// <returns>树结点值</returns>
public object GetValue(ExpTreeNode tree, object builtInFunctionsWrapper, object callerContext, bool optimize)
{
object result = null;
if (tree != null)
{
CalculateContext calcContext = new CalculateContext();
calcContext.Optimize = optimize;
calcContext.CallerContxt = callerContext;
calcContext.BuiltInFunctionsWrapper = builtInFunctionsWrapper;
result = VExp(tree, calcContext);
}
return result;
}
/// <summary>
/// 获取树结点值
/// </summary>
/// <param name="tree">二叉树节点</param>
/// <param name="calcUDF">用户自定义函数的委托</param>
/// <param name="callerContext">调用者上下文</param>
/// <param name="optimize">最优化选项</param>
/// <returns>树结点值</returns>
public object GetValue(ExpTreeNode tree, CalculateUserFunction calcUDF, object callerContext, bool optimize)
{
object result = null;
if (tree != null)
{
CalculateContext calcContext = new CalculateContext();
calcContext.Optimize = optimize;
calcContext.CallerContxt = callerContext;
calcContext.CalculateUserFunction = calcUDF;
result = VExp(tree, calcContext);
}
return result;
}
private static object DoInFunction(ParamObjectCollection arrParams, CalculateContext calcContext)
{
bool result = false;
if (arrParams.Count > 0)
{
object sourceData = arrParams[0].Value;
for (int i = 1; i < arrParams.Count; i++)
{
if ((bool)CompareEqualOP(sourceData, arrParams[i].Value, 0))
{
result = true;
break;
}
}
}
return(result);
}
private object DoIIFFunction(ExpTreeNode funcNode, IReadOnlyList <ExpTreeNode> arrParams, CalculateContext calcContext)
{
if (arrParams.Count != 3)
{
throw ParsingException.NewParsingException(ParseError.peInvalidParam,
funcNode.Position, funcNode.FunctionName, "3");
}
object result = false;
if (arrParams.Count > 0)
{
object sourceData = this.VExp(arrParams[0], calcContext);
if (sourceData != null)
{
bool sourceCondition = (bool)DataConverter.ChangeType(sourceData, typeof(bool));
if (sourceCondition)
{
result = this.VExp(arrParams[1], calcContext);
}
else
{
result = this.VExp(arrParams[2], calcContext);
}
}
}
return(result);
}
private object DoInFunction(ExpTreeNode funcNode, IReadOnlyList <ExpTreeNode> arrParams, CalculateContext calcContext)
{
bool result = false;
if (arrParams.Count > 0)
{
object sourceData = this.VExp(arrParams[0], calcContext);
if (sourceData != null)
{
for (int i = 1; i < arrParams.Count; i++)
{
object itemValue = this.VExp(arrParams[i], calcContext);
if (itemValue != null)
{
if ((bool)CompareEqualOP(sourceData, itemValue, 0))
{
result = true;
break;
}
}
}
}
}
return(result);
}
/// <summary>
/// 计算表达式字典
/// </summary>
/// <param name="strFuncName"></param>
/// <param name="arrParams"></param>
/// <param name="calcContext"></param>
/// <returns></returns>
private static object CalculateExpressionDictionary(string strFuncName, ParamObjectCollection arrParams, CalculateContext calcContext)
{
ExpressionDictionaryCollection dictionaries = (ExpressionDictionaryCollection)ObjectContextCache.Instance.GetOrAddNewValue(
"ExpressionDictionaries",
(cache, key) =>
{
ExpressionDictionaryCollection expDicts = new ExpressionDictionaryCollection();
expDicts.InitFromConfiguration(ExpressionDictionarySettings.GetConfig());
cache.Add("ExpressionDictionaries", expDicts);
return(expDicts);
});
ExpressionDictionary dictionary = dictionaries[strFuncName];
object oValue = null;
if (dictionary != null)
{
ExpressionDictionaryCalculatorContext context = new ExpressionDictionaryCalculatorContext(dictionary, calcContext.CallerContxt);
string key = string.Empty;
if (arrParams.Count > 0 && arrParams[0].Value != null)
{
key = arrParams[0].Value.ToString();
}
oValue = dictionary.Calculator.Calculate(strFuncName, key, context);
}
return(oValue);
}
/// <summary>
/// 计算所有参数都已经准备好了的函数
/// </summary>
/// <param name="strFuncName"></param>
/// <param name="arrParams"></param>
/// <param name="calcContext"></param>
/// <returns></returns>
private static object CalculateFunctionWithParameters(string strFuncName, ParamObjectCollection arrParams, CalculateContext calcContext)
{
object oValue = null;
try
{
switch (strFuncName.ToLower())
{
case "now":
oValue = DateTime.Now;
break;
case "today":
oValue = DateTime.Today;
break;
case "dateinterval.day":
oValue = "d";
break;
case "dateinterval.hour":
oValue = "h";
break;
case "dateinterval.minute":
oValue = "n";
break;
case "dateinterval.second":
oValue = "s";
break;
case "dateinterval.millisecond":
oValue = "ms";
break;
case "datediff":
oValue = DoDateDiff(arrParams);
break;
case "mindate":
oValue = DateTime.MinValue;
break;
case "maxdate":
oValue = DateTime.MaxValue;
break;
//default:
// {
// if (calcContext.CalculateUserFunction != null)
// oValue = calcContext.CalculateUserFunction(strFuncName, arrParams, calcContext.CallerContxt);
// break;
// }
}
return(oValue);
}
catch (ParsingException)
{
throw;
}
catch (System.Exception ex)
{
throw new SystemSupportException(string.Format(ExpressionParserRes.FunctionError, strFuncName, ex.Message));
}
}
/// <summary>
/// 计算所有参数都已经准备好了的函数
/// </summary>
/// <param name="strFuncName"></param>
/// <param name="arrParams"></param>
/// <param name="calcContext"></param>
/// <returns></returns>
private static object CalculateFunctionWithParameters(string strFuncName, ParamObjectCollection arrParams, CalculateContext calcContext)
{
object oValue = null;
try
{
switch (strFuncName.ToLower())
{
case "now":
oValue = DateTime.Now;
break;
case "today":
oValue = DateTime.Today;
break;
case "dateinterval.day":
oValue = "d";
break;
case "dateinterval.hour":
oValue = "h";
break;
case "dateinterval.minute":
oValue = "n";
break;
case "dateinterval.second":
oValue = "s";
break;
case "dateinterval.millisecond":
oValue = "ms";
break;
case "datediff":
oValue = DoDateDiff(arrParams);
break;
case "mindate":
oValue = DateTime.MinValue;
break;
case "maxdate":
oValue = DateTime.MaxValue;
break;
//default:
// {
// if (calcContext.CalculateUserFunction != null)
// oValue = calcContext.CalculateUserFunction(strFuncName, arrParams, calcContext.CallerContxt);
// break;
// }
}
return oValue;
}
catch (ParsingException)
{
throw;
}
catch (System.Exception ex)
{
throw new SystemSupportException(string.Format(ExpressionParserRes.FunctionError, strFuncName, ex.Message));
}
}
private ParamObjectCollection GetParams(List<ExpTreeNode> arrParams, CalculateContext calcContext)
{
List<ParamObject> list = new List<ParamObject>();
for (int i = 0; i < arrParams.Count; i++)
{
ExpTreeNode node = (ExpTreeNode)arrParams[i];
list.Add(new ParamObject(VExp(node, calcContext), node.Position, i));
}
return new ParamObjectCollection(list);
}
private static object DoInFunction(ParamObjectCollection arrParams, CalculateContext calcContext)
{
bool result = false;
if (arrParams.Count > 0)
{
object sourceData = arrParams[0].Value;
for (int i = 1; i < arrParams.Count; i++)
{
if ((bool)CompareEqualOP(sourceData, arrParams[i].Value, 0))
{
result = true;
break;
}
}
}
return result;
}
private object DoIIFFunction(ExpTreeNode funcNode, IReadOnlyList<ExpTreeNode> arrParams, CalculateContext calcContext)
{
if (arrParams.Count != 3)
throw ParsingException.NewParsingException(ParseError.peInvalidParam,
funcNode.Position, funcNode.FunctionName, "3");
object result = false;
if (arrParams.Count > 0)
{
object sourceData = this.VExp(arrParams[0], calcContext);
if (sourceData != null)
{
bool sourceCondition = (bool)DataConverter.ChangeType(sourceData, typeof(bool));
if (sourceCondition)
result = this.VExp(arrParams[1], calcContext);
else
result = this.VExp(arrParams[2], calcContext);
}
}
return result;
}
private object DoInFunction(ExpTreeNode funcNode, IReadOnlyList<ExpTreeNode> arrParams, CalculateContext calcContext)
{
bool result = false;
if (arrParams.Count > 0)
{
object sourceData = this.VExp(arrParams[0], calcContext);
if (sourceData != null)
{
for (int i = 1; i < arrParams.Count; i++)
{
object itemValue = this.VExp(arrParams[i], calcContext);
if (itemValue != null)
{
if ((bool)CompareEqualOP(sourceData, itemValue, 0))
{
result = true;
break;
}
}
}
}
}
return result;
}
/// <summary>
/// 计算表达式字典
/// </summary>
/// <param name="strFuncName"></param>
/// <param name="arrParams"></param>
/// <param name="calcContext"></param>
/// <returns></returns>
private static object CalculateExpressionDictionary(string strFuncName, ParamObjectCollection arrParams, CalculateContext calcContext)
{
ExpressionDictionaryCollection dictionaries = (ExpressionDictionaryCollection)ObjectContextCache.Instance.GetOrAddNewValue(
"ExpressionDictionaries",
(cache, key) =>
{
ExpressionDictionaryCollection expDicts = new ExpressionDictionaryCollection();
expDicts.InitFromConfiguration(ExpressionDictionarySettings.GetConfig());
cache.Add("ExpressionDictionaries", expDicts);
return expDicts;
});
ExpressionDictionary dictionary = dictionaries[strFuncName];
object oValue = null;
if (dictionary != null)
{
ExpressionDictionaryCalculatorContext context = new ExpressionDictionaryCalculatorContext(dictionary, calcContext.CallerContxt);
string key = string.Empty;
if (arrParams.Count > 0 && arrParams[0].Value != null)
key = arrParams[0].Value.ToString();
oValue = dictionary.Calculator.Calculate(strFuncName, key, context);
}
return oValue;
}
private object VExp(ExpTreeNode node, CalculateContext calcContext)
{
object oValue = null;
if (node != null)
{
try
{
switch (node.OperationID)
{
case Operation_IDs.OI_NUMBER:
case Operation_IDs.OI_STRING:
case Operation_IDs.OI_NEG:
case Operation_IDs.OI_BOOLEAN:
case Operation_IDs.OI_DATETIME:
oValue = node.Value;
break;
case Operation_IDs.OI_ADD:
oValue = AddOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_MINUS:
{
object p1 = VExp(node.Left, calcContext);
object p2 = VExp(node.Right, calcContext);
CheckOperandNull(p1, p2, node.Position);
oValue = NToD(p1) - NToD(p2);
}
break;
case Operation_IDs.OI_MUL:
{
object p1 = VExp(node.Left, calcContext);
object p2 = VExp(node.Right, calcContext);
CheckOperandNull(p1, p2, node.Position);
oValue = NToD(p1) * NToD(p2);
}
break;
case Operation_IDs.OI_DIV:
{
object p1 = VExp(node.Left, calcContext);
object p2 = VExp(node.Right, calcContext);
CheckOperandNull(p1, p2, node.Position);
if (NToD(p2) == 0.0M)
{
throw ParsingException.NewParsingException(ParseError.peFloatOverflow, node.Position);
}
oValue = NToD(p1) / NToD(p2);
}
break;
case Operation_IDs.OI_LOGICAL_OR:
{
oValue = (bool)VExp(node.Left, calcContext);
object oRight = (bool)false;
if ((bool)oValue == false)
oRight = VExp(node.Right, calcContext);
CheckOperandNull(oValue, oRight, node.Position);
oValue = (bool)oValue || (bool)oRight;
}
break;
case Operation_IDs.OI_LOGICAL_AND:
{
oValue = (bool)VExp(node.Left, calcContext);
object oRight = (bool)true;
if ((bool)oValue == true)
oRight = VExp(node.Right, calcContext);
CheckOperandNull(oValue, oRight, node.Position);
oValue = (bool)oValue && (bool)oRight;
}
break;
case Operation_IDs.OI_NOT:
oValue = VExp(node.Right, calcContext);
CheckOperandNull(oValue, node.Position);
oValue = !(bool)oValue;
break;
case Operation_IDs.OI_GREAT:
oValue = CompareGreatOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_GREATEQUAL:
oValue = CompareGreatEqualOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_LESS:
oValue = CompareLessOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_LESSEQUAL:
oValue = CompareLessEqualOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_NOT_EQUAL:
oValue = CompareNotEqualOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_EQUAL:
oValue = CompareEqualOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_USERDEFINE:
{
oValue = CalculateFunction(node, node.Params, calcContext);
if (oValue == null)
{
ParamObjectCollection funcParams = GetParams(node.Params, calcContext);
oValue = CalculateFunctionWithParameters(node.FunctionName, funcParams, calcContext);
if (oValue == null)
oValue = calcContext.GetUserFunctionValue(node.FunctionName, funcParams);
if (oValue == null)
oValue = CalculateExpressionDictionary(node.FunctionName, funcParams, calcContext);
}
}
break;
default:
throw ParsingException.NewParsingException(
ParseError.peInvalidOperator,
node.Position,
EnumItemDescriptionAttribute.GetAttribute(node.OperationID).ShortName);
}
}
catch (System.InvalidCastException)
{
throw ParsingException.NewParsingException(ParseError.peTypeMismatch, node.Position);
}
}
return oValue;
}
private object CalculateFunction(ExpTreeNode funcNode, List <ExpTreeNode> arrParams, CalculateContext calcContext)
{
object oValue = null;
switch (funcNode.FunctionName.ToLower())
{
case "in":
oValue = this.DoInFunction(funcNode, arrParams, calcContext);
break;
case "iif":
oValue = this.DoIIFFunction(funcNode, arrParams, calcContext);
break;
}
return(oValue);
}
private object VExp(ExpTreeNode node, CalculateContext calcContext)
{
object oValue = null;
if (node != null)
{
try
{
switch (node.OperationID)
{
case Operation_IDs.OI_NUMBER:
case Operation_IDs.OI_STRING:
case Operation_IDs.OI_NEG:
case Operation_IDs.OI_BOOLEAN:
case Operation_IDs.OI_DATETIME:
oValue = node.Value;
break;
case Operation_IDs.OI_ADD:
oValue = AddOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_MINUS:
{
object p1 = VExp(node.Left, calcContext);
object p2 = VExp(node.Right, calcContext);
CheckOperandNull(p1, p2, node.Position);
oValue = NToD(p1) - NToD(p2);
}
break;
case Operation_IDs.OI_MUL:
{
object p1 = VExp(node.Left, calcContext);
object p2 = VExp(node.Right, calcContext);
CheckOperandNull(p1, p2, node.Position);
oValue = NToD(p1) * NToD(p2);
}
break;
case Operation_IDs.OI_DIV:
{
object p1 = VExp(node.Left, calcContext);
object p2 = VExp(node.Right, calcContext);
CheckOperandNull(p1, p2, node.Position);
if (NToD(p2) == 0.0M)
{
throw ParsingException.NewParsingException(ParseError.peFloatOverflow, node.Position);
}
oValue = NToD(p1) / NToD(p2);
}
break;
case Operation_IDs.OI_LOGICAL_OR:
{
oValue = (bool)VExp(node.Left, calcContext);
object oRight = (bool)false;
if ((bool)oValue == false)
{
oRight = VExp(node.Right, calcContext);
}
CheckOperandNull(oValue, oRight, node.Position);
oValue = (bool)oValue || (bool)oRight;
}
break;
case Operation_IDs.OI_LOGICAL_AND:
{
oValue = (bool)VExp(node.Left, calcContext);
object oRight = (bool)true;
if ((bool)oValue == true)
{
oRight = VExp(node.Right, calcContext);
}
CheckOperandNull(oValue, oRight, node.Position);
oValue = (bool)oValue && (bool)oRight;
}
break;
case Operation_IDs.OI_NOT:
oValue = VExp(node.Right, calcContext);
CheckOperandNull(oValue, node.Position);
oValue = !(bool)oValue;
break;
case Operation_IDs.OI_GREAT:
oValue = CompareGreatOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_GREATEQUAL:
oValue = CompareGreatEqualOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_LESS:
oValue = CompareLessOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_LESSEQUAL:
oValue = CompareLessEqualOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_NOT_EQUAL:
oValue = CompareNotEqualOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_EQUAL:
oValue = CompareEqualOP(VExp(node.Left, calcContext), VExp(node.Right, calcContext), node.Position);
break;
case Operation_IDs.OI_USERDEFINE:
{
oValue = CalculateFunction(node, node.Params, calcContext);
if (oValue == null)
{
ParamObjectCollection funcParams = GetParams(node.Params, calcContext);
oValue = CalculateFunctionWithParameters(node.FunctionName, funcParams, calcContext);
if (oValue == null)
{
oValue = calcContext.GetUserFunctionValue(node.FunctionName, funcParams);
}
if (oValue == null)
{
oValue = CalculateExpressionDictionary(node.FunctionName, funcParams, calcContext);
}
}
}
break;
default:
throw ParsingException.NewParsingException(
ParseError.peInvalidOperator,
node.Position,
EnumItemDescriptionAttribute.GetAttribute(node.OperationID).ShortName);
}
}
catch (System.InvalidCastException)
{
throw ParsingException.NewParsingException(ParseError.peTypeMismatch, node.Position);
}
}
return(oValue);
}
private object CalculateFunction(ExpTreeNode funcNode, List<ExpTreeNode> arrParams, CalculateContext calcContext)
{
object oValue = null;
switch (funcNode.FunctionName.ToLower())
{
case "in":
oValue = this.DoInFunction(funcNode, arrParams, calcContext);
break;
case "iif":
oValue = this.DoIIFFunction(funcNode, arrParams, calcContext);
break;
}
return oValue;
}
