private bool ExecuteSub(ExpressionTreeNode treeNode, params object[] exeArgs)
{
if (treeNode.RightNode.NodeType == ExpressionTreeNodeType.Operator)
{
return(ExecuteSub(treeNode.RightNode, exeArgs));
}
else
{
ConditionalExpressionToken exprTokenLeft = new ConditionalExpressionToken(treeNode.LeftNode.Str);
ConditionalExpressionToken exprTokenRight = new ConditionalExpressionToken(treeNode.RightNode.Str);
exprTokenLeft.Execute(exeArgs);
exprTokenRight.Execute(exeArgs);
Operator opt = ExpressionManager.Instance.GetOperator(treeNode.Str);
opt.ExecuteOperator(exprTokenLeft.ReturnValue, exprTokenRight.ReturnValue);
if (opt.ReturnValue == "True")
{
return(true);
}
else
{
return(false);
}
}
}
private void Parse()
{
ExpressionTreeNode lastTreeNode = null;
string lastExpressionStr = conditionStr;
bool hasConditionConnection = false;
List <Tuple <string, int> > connPosDic = new List <Tuple <string, int> >();
foreach (var conditionConnectionStr in conditionConnectionsArr)
{
if (conditionStr.Contains(conditionConnectionStr))
{
int[] indics = conditionStr.IndexOfAll(conditionStr);
foreach (var index in indics)
{
connPosDic.Add(new Tuple <string, int>(conditionConnectionStr, index));
}
}
}
if (!hasConditionConnection)
{
tokens.Add(new ConditionalExpressionToken(conditionStr));
}
else
{
connPosDic = (from pair in connPosDic
orderby pair.Item2 descending
select pair).ToList();
int idx = 0;
foreach (var pair in connPosDic)
{
int strIndx = lastExpressionStr.LastIndexOf(pair.Item1);
var part1 = lastExpressionStr.Substring(0, lastExpressionStr.Length - strIndx);
var part2 = lastExpressionStr.Substring(strIndx + pair.Item1.Length);
ExpressionTreeNode node = new ExpressionTreeNode();
node.Str = pair.Item1;
node.NodeType = ExpressionTreeNodeType.Operator;
ExpressionTreeNode leftNode = new ExpressionTreeNode();
leftNode.NodeType = ExpressionTreeNodeType.Expr;
leftNode.Str = part2;
node.LeftNode = leftNode;
if (idx == 0)
{
exprTree.Root = node;
}
else if (idx == connPosDic.Count - 1)
{
ExpressionTreeNode rightNode = new ExpressionTreeNode();
rightNode.NodeType = ExpressionTreeNodeType.Expr;
rightNode.Str = part2;
node.RightNode = rightNode;
}
else
{
lastTreeNode.RightNode = node;
}
lastTreeNode = node;
lastExpressionStr = part1;
}
}
}
