public void Build()
{
TokenParser tp = new TokenParser(_query);
IEnumerator <Token> enumerator = tp.GetEnumerator();
Stack <Token> tokens = new Stack <Token>();
Stack <TokenType> allowedStack = new Stack <TokenType>();
while (enumerator.MoveNext())
{
if (allowedStack.Count > 0)
{
_allowed = allowedStack.Pop();
}
Token token = enumerator.Current;
TokenType type = token.Type;
if ((_allowed & type) == type)
{
switch (type)
{
case TokenType.Group:
break;
case TokenType.Operator:
var op = token.Text;
if (op == "OR")
{
if (tokens.Count > 0)
{
_orExpr.Add(tokens.Pop());
}
}
else if (op == "AND")
{
if (tokens.Count > 0)
{
_andExpr.Add(tokens.Pop());
}
}
allowedStack.Push(_allowed);
_allowed ^= TokenType.Operator;
allowedStack.Push(_allowed);
break;
case TokenType.Property:
var property = token;
enumerator.MoveNext();
token = enumerator.Current;
if (token == null)
{
break;
}
if (token.Type != TokenType.Phrase && token.Type != TokenType.Word)
{
continue;
}
property.Text += token.Text;
token = property;
break;
case TokenType.Phrase:
case TokenType.Word:
break;
}
bool addToStack = true;
while (token != null && tokens.Count > 0)
{
var lastToken = tokens.Pop() ?? new Token();
if (lastToken.Type == TokenType.Operator && lastToken.Text == "AND")
{
token.ParentOperator = "AND";
_andExpr.Add(token);
addToStack = false;
}
else if (lastToken.Type == TokenType.Operator && lastToken.Text == "OR")
{
token.ParentOperator = "OR";
_orExpr.Add(token);
addToStack = false;
}
else if (lastToken.Type == TokenType.Operator && lastToken.Text == "NOT")
{
token.ParentOperator = "NOT";
_notExpr.Add(token);
addToStack = false;
}
else if (lastToken.Type == TokenType.Operator && lastToken.Text == "ANY")
{
token.ParentOperator = "ANY";
_orExpr.Add(token);
addToStack = false;
}
else if (lastToken.Type == TokenType.Operator && lastToken.Text == "ALL")
{
token.ParentOperator = "ALL";
_andExpr.Add(token);
addToStack = false;
}
else if (lastToken.Type == TokenType.Operator && lastToken.Text == "NONE")
{
token.ParentOperator = "NONE";
_notExpr.Add(token);
addToStack = false;
}
else
{
if (lastToken.Text.StartsWith("-"))
{
lastToken.Text = lastToken.Text.Trim('-');
lastToken.ParentOperator = "NONE";
_notExpr.Add(lastToken);
}
else
{
lastToken.ParentOperator = "ALL";
_andExpr.Add(lastToken);
}
}
}
if (addToStack)
{
tokens.Push(token);
}
}
}
while (tokens.Count > 0)
{
var lastToken = tokens.Pop();
if (lastToken.Text.StartsWith("-"))
{
lastToken.Text = lastToken.Text.Trim('-');
_notExpr.Add(lastToken);
}
else
{
lastToken.ParentOperator = "ALL";
_andExpr.Add(lastToken);
}
}
GroupEqualPropertyKeys();
}
