public override SqlObject VisitTop_spec([NotNull] sqlParser.Top_specContext context)
{
Contract.Requires(context != null);
Number64 topCount = CstToAstVisitor.GetNumber64ValueFromNode(context.NUMERIC_LITERAL());
return(SqlTopSpec.Create(SqlNumberLiteral.Create(topCount)));
}
public override SqlObject VisitStringPathExpression([NotNull] sqlParser.StringPathExpressionContext context)
{
Contract.Requires(context != null);
SqlPathExpression pathExpression = (SqlPathExpression)this.Visit(context.path_expression());
SqlStringLiteral stringIndex = SqlStringLiteral.Create(CstToAstVisitor.GetStringValueFromNode(context.STRING_LITERAL()));
return(SqlStringPathExpression.Create(pathExpression, stringIndex));
}
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([NotNull] 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([NotNull] 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 VisitObjectCreateScalarExpression([NotNull] sqlParser.ObjectCreateScalarExpressionContext context)
{
Contract.Requires(context != null);
// '{' object_propertty_list? '}'
List <SqlObjectProperty> properties = new List <SqlObjectProperty>();
if (context.object_propertty_list() != null)
{
sqlParser.Object_propertyContext[] propertyContexts = context.object_propertty_list().object_property();
foreach (sqlParser.Object_propertyContext objectPropertyContext in propertyContexts)
{
string name = CstToAstVisitor.GetStringValueFromNode(objectPropertyContext.STRING_LITERAL());
SqlScalarExpression value = (SqlScalarExpression)this.Visit(objectPropertyContext.scalar_expression());
SqlObjectProperty property = SqlObjectProperty.Create(
SqlPropertyName.Create(name),
value);
properties.Add(property);
}
}
return(SqlObjectCreateScalarExpression.Create(properties));
}
