public override bool TryParse(string sort, out ISortParserResultExpression expression)
{
if (string.IsNullOrEmpty(sort))
{
expression = default(ISortParserResultExpression);
return(false);
}
var parts = sort.Split(' ');
if (parts.Length != 2)
{
expression = default(ISortParserResultExpression);
return(false);
}
var name = default(string);
if (!this.TryGetName(parts[0], out name))
{
expression = default(ISortParserResultExpression);
return(false);
}
if (!string.Equals(parts[1], "num", StringComparison.OrdinalIgnoreCase))
{
expression = default(ISortParserResultExpression);
return(false);
}
expression = new SortParserResultExpression(name, SortParserResultOperator.Numeric);
return(true);
}
public override bool TryParse(string sort, out ISortParserResultExpression expression)
{
var names = new[]
{
"random",
Strings.RandomSortParserProvider_Random
};
if (names.Contains(sort, StringComparer.OrdinalIgnoreCase))
{
expression = new SortParserResultExpression(SortParserResultOperator.Random);
return(true);
}
expression = default(ISortParserResultExpression);
return(false);
}
public override bool TryParse(string sort, out ISortParserResultExpression expression)
{
if (string.IsNullOrEmpty(sort))
{
expression = default(ISortParserResultExpression);
return(false);
}
var name = default(string);
if (!this.TryGetName(sort, out name))
{
expression = default(ISortParserResultExpression);
return(false);
}
expression = new SortParserResultExpression(name);
return(true);
}
public override bool TryParse(string sort, out ISortParserResultExpression expression)
{
if (string.IsNullOrEmpty(sort))
{
expression = default(ISortParserResultExpression);
return(false);
}
var parts = sort.Split(' ');
if (parts.Length != 3)
{
expression = default(ISortParserResultExpression);
return(false);
}
var name1 = default(string);
if (!this.TryGetName(parts[0], out name1))
{
expression = default(ISortParserResultExpression);
return(false);
}
var @operator = default(SortParserResultOperator);
if (!Operators.TryGetValue(parts[1], out @operator))
{
expression = default(ISortParserResultExpression);
return(false);
}
var name2 = default(string);
if (!this.TryGetName(parts[2], out name2))
{
expression = default(ISortParserResultExpression);
return(false);
}
expression = new SortParserResultExpression(
name1,
@operator,
new SortParserResultExpression(
name2
)
);
return(true);
}