private GenericExpressionNode BooleanTermPrime(string expression, GenericExpressionNode lhs)
{
if (lexer.IsNext(Token.TokenType.EndOfInput))
{
return(lhs);
}
else if (Same(expression, Token.TokenType.And))
{
GenericExpressionNode rhs = RelationalExpr(expression);
if (rhs == null)
{
errorPosition = lexer.GetErrorPosition();
ProjectErrorUtilities.VerifyThrowInvalidProject(false, this.conditionAttribute, "UnexpectedTokenInCondition", expression, lexer.IsNextString(), errorPosition);
}
OperatorExpressionNode andNode = new AndExpressionNode();
andNode.LeftChild = lhs;
andNode.RightChild = rhs;
return(BooleanTermPrime(expression, andNode));
}
else
{
// Should this be error case?
return(lhs);
}
}
private GenericExpressionNode BooleanTermPrime(string expression, GenericExpressionNode lhs)
{
if (lexer.IsNext(Token.TokenType.EndOfInput))
{
return lhs;
}
else if (Same(expression, Token.TokenType.And))
{
GenericExpressionNode rhs = RelationalExpr(expression);
if (null == rhs)
{
errorPosition = lexer.GetErrorPosition();
ProjectErrorUtilities.VerifyThrowInvalidProject(false, this.conditionAttribute, "UnexpectedTokenInCondition", expression, lexer.IsNextString(), errorPosition);
}
OperatorExpressionNode andNode = new AndExpressionNode();
andNode.LeftChild = lhs;
andNode.RightChild = rhs;
return BooleanTermPrime(expression, andNode);
}
else
{
// Should this be error case?
return lhs;
}
}
