public static IList<string> Parse(Reader r, char open, char close)
{
if (r.Peek == open)
{
var result = new List<string>();
r.Take();
while (!r.End)
{
var builder = new StringBuilder();
while (!r.End && r.Peek != ',' && r.Peek != close && !char.IsWhiteSpace(r.Peek))
{
builder.Append(r.Take());
}
if (builder.Length == 0)
{
throw new ExpressionParseException(r.Position, "Expected indexer argument.");
}
result.Add(builder.ToString());
r.SkipWhitespace();
if (r.End)
{
throw new ExpressionParseException(r.Position, "Expected ','.");
}
else if (r.TakeIf(close))
{
return result;
}
else
{
if (r.Take() != ',')
{
throw new ExpressionParseException(r.Position, "Expected ','.");
}
r.SkipWhitespace();
}
}
if (!r.End)
{
r.Take();
return result;
}
else
{
throw new ExpressionParseException(r.Position, "Expected ']'.");
}
}
return null;
}
private static bool ParseOpenBrace(Reader r)
{
return !r.End && r.TakeIf('(');
}
private static bool ParseMemberAccessor(Reader r)
{
return !r.End && r.TakeIf('.');
}
private static bool ParseNot(Reader r)
{
return !r.End && r.TakeIf('!');
}
private State ParseAttachedProperty(Reader r, List<ExpressionNode> nodes)
{
var owner = IdentifierParser.Parse(r);
if (r.End || !r.TakeIf('.'))
{
throw new ExpressionParseException(r.Position, "Invalid attached property name.");
}
var name = IdentifierParser.Parse(r);
if (r.End || !r.TakeIf(')'))
{
throw new ExpressionParseException(r.Position, "Expected ')'.");
}
nodes.Add(new PropertyAccessorNode(owner + '.' + name, _enableValidation));
return State.AfterMember;
}
private static bool ParseStreamOperator(Reader r)
{
return !r.End && r.TakeIf('^');
}
private static bool ParseStreamOperator(Reader r)
{
return(!r.End && r.TakeIf('^'));
}
private static bool ParseOpenBrace(Reader r)
{
return(!r.End && r.TakeIf('('));
}
private static bool ParseMemberAccessor(Reader r)
{
return(!r.End && r.TakeIf('.'));
}
private static bool ParseNot(Reader r)
{
return(!r.End && r.TakeIf('!'));
}