public override SqlObject VisitLimit_count([NotNull] sqlParser.Limit_countContext context)
{
Contract.Requires(context != null);
SqlLimitSpec sqlLimitSpec;
if (context.NUMERIC_LITERAL() != null)
{
sqlLimitSpec = SqlLimitSpec.Create(
SqlNumberLiteral.Create(
CstToAstVisitor.GetNumber64ValueFromNode(
context.NUMERIC_LITERAL())));
}
else if (context.PARAMETER() != null)
{
sqlLimitSpec = SqlLimitSpec.Create(
SqlParameter.Create(
context.PARAMETER().GetText()));
}
else
{
throw new NotImplementedException();
}
return(sqlLimitSpec);
}
public override SqlObject VisitTop_spec(sqlParser.Top_specContext context)
{
Contract.Requires(context != null);
Number64 topCount = CstToAstVisitor.GetNumber64ValueFromNode(context.NUMERIC_LITERAL());
return(SqlTopSpec.Create(SqlNumberLiteral.Create(topCount)));
}
public override SqlObject VisitNumberPathExpression([NotNull] sqlParser.NumberPathExpressionContext context)
{
Contract.Requires(context != null);
SqlPathExpression pathExpression = (SqlPathExpression)this.Visit(context.path_expression());
SqlNumberLiteral number = SqlNumberLiteral.Create(CstToAstVisitor.GetNumber64ValueFromNode(context.NUMERIC_LITERAL()));
return(SqlNumberPathExpression.Create(pathExpression, number));
}
public override SqlObject VisitOffset_limit_clause(sqlParser.Offset_limit_clauseContext context)
{
Contract.Requires(context != null);
SqlOffsetSpec sqlOffsetSpec = SqlOffsetSpec.Create(
SqlNumberLiteral.Create(
CstToAstVisitor.GetNumber64ValueFromNode(
context.offset_count().NUMERIC_LITERAL())));
SqlLimitSpec sqlLimitSpec = SqlLimitSpec.Create(
SqlNumberLiteral.Create(
CstToAstVisitor.GetNumber64ValueFromNode(
context.limit_count().NUMERIC_LITERAL())));
return(SqlOffsetLimitClause.Create(sqlOffsetSpec, sqlLimitSpec));
}
public override SqlObject VisitLiteralScalarExpression(sqlParser.LiteralScalarExpressionContext context)
{
Contract.Requires(context != null);
Contract.Requires(context.ChildCount == 1);
Contract.Requires(context.children[0].ChildCount == 1);
TerminalNodeImpl terminalNode = (TerminalNodeImpl)context.children[0].GetChild(0);
SqlLiteralScalarExpression sqlLiteralScalarExpression;
switch (terminalNode.Symbol.Type)
{
case sqlParser.STRING_LITERAL:
string value = CstToAstVisitor.GetStringValueFromNode(terminalNode);
sqlLiteralScalarExpression = SqlLiteralScalarExpression.Create(SqlStringLiteral.Create(value));
break;
case sqlParser.NUMERIC_LITERAL:
Number64 number64 = CstToAstVisitor.GetNumber64ValueFromNode(terminalNode);
sqlLiteralScalarExpression = SqlLiteralScalarExpression.Create(SqlNumberLiteral.Create(number64));
break;
case sqlParser.K_TRUE:
sqlLiteralScalarExpression = SqlLiteralScalarExpression.Create(SqlBooleanLiteral.Create(true));
break;
case sqlParser.K_FALSE:
sqlLiteralScalarExpression = SqlLiteralScalarExpression.Create(SqlBooleanLiteral.Create(false));
break;
case sqlParser.K_NULL:
sqlLiteralScalarExpression = SqlLiteralScalarExpression.Create(SqlNullLiteral.Create());
break;
case sqlParser.K_UNDEFINED:
sqlLiteralScalarExpression = SqlLiteralScalarExpression.Create(SqlUndefinedLiteral.Create());
break;
default:
throw new ArgumentOutOfRangeException($"Unknown symbol type: {terminalNode.Symbol.Type}");
}
return(sqlLiteralScalarExpression);
}
public override SqlObject VisitLiteral([NotNull] sqlParser.LiteralContext context)
{
TerminalNodeImpl terminalNode = (TerminalNodeImpl)context.children[0];
SqlLiteral sqlLiteral;
switch (terminalNode.Symbol.Type)
{
case sqlParser.STRING_LITERAL:
string value = CstToAstVisitor.GetStringValueFromNode(terminalNode);
sqlLiteral = SqlStringLiteral.Create(value);
break;
case sqlParser.NUMERIC_LITERAL:
Number64 number64 = CstToAstVisitor.GetNumber64ValueFromNode(terminalNode);
sqlLiteral = SqlNumberLiteral.Create(number64);
break;
case sqlParser.K_TRUE:
sqlLiteral = SqlBooleanLiteral.Create(true);
break;
case sqlParser.K_FALSE:
sqlLiteral = SqlBooleanLiteral.Create(false);
break;
case sqlParser.K_NULL:
sqlLiteral = SqlNullLiteral.Create();
break;
case sqlParser.K_UNDEFINED:
sqlLiteral = SqlUndefinedLiteral.Create();
break;
default:
throw new ArgumentOutOfRangeException($"Unknown symbol type: {terminalNode.Symbol.Type}");
}
return(sqlLiteral);
}
public override SqlObject VisitTop_spec([NotNull] sqlParser.Top_specContext context)
{
Contract.Requires(context != null);
SqlTopSpec sqlTopSpec;
if (context.NUMERIC_LITERAL() != null)
{
Number64 topCount = CstToAstVisitor.GetNumber64ValueFromNode(context.NUMERIC_LITERAL());
sqlTopSpec = SqlTopSpec.Create(SqlNumberLiteral.Create(topCount));
}
else if (context.PARAMETER() != null)
{
sqlTopSpec = SqlTopSpec.Create(SqlParameter.Create(context.PARAMETER().GetText()));
}
else
{
throw new InvalidOperationException();
}
return(sqlTopSpec);
}
