private IExpression CreateFunction(TextSpan token, IParser parser)
{
var nameExpr = parser.ConsumeObjectId();
parser.Scanner.Consume(SqlToken.LParen);
var arguments = parser.ConsumeArgumentList();
parser.Scanner.Consume(SqlToken.RParen);
parser.Scanner.Consume(SqlToken.Returns);
parser.Scanner.TryConsumeVariable(out var returnVariableExpr);
var returnTypeExpr = parser.ConsumeDataType();
parser.Scanner.Consume(SqlToken.As);
var body = parser.ConsumeBeginBody();
return(new CreateFunctionSqlCodeExpr
{
Name = nameExpr,
Arguments = arguments,
ReturnVariable = returnVariableExpr,
ReturnType = returnTypeExpr,
Body = body
});
}
public IExpression Parse(TextSpan token, IParser parser)
{
var boolExpr = parser.ParseExpIgnoreComment();
var body = parser.ConsumeBeginBody();
return(new WhileSqlCodeExpr
{
BooleanExpr = boolExpr,
Body = body
});
}
public IExpression Parse(TextSpan token, IParser parser)
{
if (parser.Scanner.IsTokenAny(SqlToken.TRANSACTION, SqlToken.TRAN))
{
return(ParseBeginTransaction(parser));
}
parser.Scanner.SetOffset(token.Offset - 1);
var exprList = parser.ConsumeBeginBody();
return(new BeginSqlCodeExpr()
{
Items = exprList,
});
}
