public static bool IsSpliceListSequence(Token token, out Token.Operator op2, out Token body)
{
var _op1 = token as Token.Operator;
if (_op1 != null && string.Equals(_op1.name, "..", StringComparison.InvariantCulture))
{
var _op2 = _op1.Next as Token.Operator;
if (_op2 != null && string.Equals(_op2.name, "$", StringComparison.InvariantCulture) && _op2.Next != null)
{
op2 = _op2;
body = _op2.Next;
return(true);
}
}
op2 = null;
body = null;
return(false);
}
public static bool IsQuotationWithHeader(Token.QuoteGroup group, out Token.Identifier type, out Token.Operator colon, out Token body)
{
var content = group.Child as Token.LooseGroup;
if (content != null)
{
var _type = content.Child as Token.Identifier;
if (_type != null && _quotationTypes.Contains(_type.name))
{
var _colon = _type.Next as Token.Operator;
if (_colon != null && string.Equals(_colon.name, ":", StringComparison.InvariantCulture))
{
type = _type;
colon = _colon;
body = _colon.Next;
return(true);
}
}
}
type = null;
colon = null;
body = null;
return(false);
}
