// after reading syntaxes creates syntax tree
// - removes extra brackets
// - finds operator with minimum prio
private ISyntaxNode BuildSyntaxTree(List <ISyntaxNode> listNode)
{
DeleteExcessiveBrackets(listNode);
if (listNode.Count == 1)
{
return(listNode[0]);
}
int position;
ISyntaxNode min = FindMinPrioritiOperation(listNode, out position);
if (listBinaryOperations.IndexOf(min.ToStringValue()) != -1)
{
BinaryOperation operation = min as BinaryOperation;
operation.SetA(BuildSyntaxTree(listNode.GetRange(0, position)));
operation.SetB(BuildSyntaxTree(listNode.GetRange(position + 1, listNode.Count - (position + 1))));
}
if (listUnaryOperations.IndexOf(min.ToStringValue()) != -1)
{
UnaryOperation operation = min as UnaryOperation;
operation.SetA(BuildSyntaxTree(listNode.GetRange(position + 1, listNode.Count - (position + 1))));
}
if (listFunctions.IndexOf(min.ToStringValue()) != -1)
{
Function function = min as Function;
function.SetX(BuildSyntaxTree(listNode.GetRange(position + 1, listNode.Count - (position + 1))));
}
return(min);
}