public FilterNode Filter(string value)
{
FilterNode filterNode = new FilterNode();
filterNode.Text = value;
Match(TokenType.FILTER);
Token nextToken = CurrentToken();
do
{
if (nextToken.Type_ != TokenType.OPENSQUAREBRACKET)
{
var abstractSyntaxTreeNode = BuildSubAST(nextToken.Type_, nextToken.Text);
filterNode.FilterItems.Add(abstractSyntaxTreeNode);
}
else
{
Match(TokenType.OPENSQUAREBRACKET);
}
nextToken = CurrentToken();
}while (nextToken.Type_ != TokenType.CLOSESQUAREBRACKET);
Match(TokenType.CLOSESQUAREBRACKET);
return(filterNode);
}
public ObjectNode IdentObject(ObjectNode objectNode)
{
Match(TokenType.IDENT);
var currentToken = CurrentToken();
if (!symbolTable.ContainsKey(objectNode.Name))
{
symbolTable.Add(objectNode.Name, objectNode);
}
currentToken = CurrentToken();
if (currentToken.Type_ == TokenType.IDENT)
{
objectNode.PropertyName = currentToken.Text;
Match(TokenType.IDENT);
}
else if (currentToken.Type_ == TokenType.FILTER)
{
FilterNode filterNode = Filter(currentToken.Text);
objectNode.Filter = filterNode;
}
ConsumeNextToken();
currentToken = CurrentToken();
if (currentToken.Type_ == TokenType.POINT)
{
Match(TokenType.POINT);
currentToken = CurrentToken();
}
if (currentToken.Type_ == TokenType.FILTER)
{
FilterNode filterNode = Filter(currentToken.Text);
objectNode.Filter = filterNode;
currentToken = CurrentToken();
}
if (currentToken.Type_ == TokenType.POINT)
{
Match(TokenType.POINT);
currentToken = CurrentToken();
}
if (currentToken.Type_ == TokenType.AVERAGE)
{
objectNode.AggregateFunction = new AggregateAverageNode();
Match(TokenType.AVERAGE);
}
else if (currentToken.Type_ == TokenType.SUM)
{
objectNode.AggregateFunction = new AggregateSumNode();
Match(TokenType.SUM);
}
else if (currentToken.Type_ == TokenType.COUNT)
{
objectNode.AggregateFunction = new AggregateCountNode();
Match(TokenType.COUNT);
}
else if (currentToken.Type_ == TokenType.MIN)
{
objectNode.AggregateFunction = new AggregateMinNode();
Match(TokenType.MIN);
}
else if (currentToken.Type_ == TokenType.MAX)
{
objectNode.AggregateFunction = new AggregateMaxNode();
Match(TokenType.MAX);
}
return(objectNode);
}
public CollectionNode Collection(string value)
{
CollectionNode collectionNode = new CollectionNode();
Match(TokenType.COLLECTION);
ConsumeNextToken();
var currentToken = CurrentToken();
if (currentToken.Type_ == TokenType.IDENT)
{
VariableNode variableNode = CollectionIdent(currentToken.Text);
collectionNode.Value = variableNode;
Match(TokenType.IDENT);
}
else if (currentToken.Type_ == TokenType.FILTER)
{
FilterNode filterNode = Filter(currentToken.Text);
collectionNode.Filter = filterNode;
}
ConsumeNextToken();
currentToken = CurrentToken();
if (currentToken.Type_ == TokenType.POINT)
{
Match(TokenType.POINT);
currentToken = CurrentToken();
}
if (currentToken.Type_ == TokenType.FILTER)
{
FilterNode filterNode = Filter(currentToken.Text);
collectionNode.Filter = filterNode;
currentToken = CurrentToken();
}
if (currentToken.Type_ == TokenType.POINT)
{
Match(TokenType.POINT);
currentToken = CurrentToken();
}
if (currentToken.Type_ == TokenType.AVERAGE)
{
collectionNode.AggregateFunction = new AggregateAverageNode();
Match(TokenType.AVERAGE);
}
else if (currentToken.Type_ == TokenType.SUM)
{
collectionNode.AggregateFunction = new AggregateSumNode();
Match(TokenType.SUM);
}
else if (currentToken.Type_ == TokenType.COUNT)
{
collectionNode.AggregateFunction = new AggregateCountNode();
Match(TokenType.COUNT);
}
else if (currentToken.Type_ == TokenType.MIN)
{
collectionNode.AggregateFunction = new AggregateMinNode();
Match(TokenType.MIN);
}
else if (currentToken.Type_ == TokenType.MAX)
{
collectionNode.AggregateFunction = new AggregateMaxNode();
Match(TokenType.MAX);
}
else
{
Rewind();
}
return(collectionNode);
}