ExpressionList ParseFunctionArguments(ref int start, int end)
{
var args = new ExpressionList();
do
{
SkipSpaces(ref start);
if (start == source.Length)
{
throw new InvalidProjectFileException("unterminated function call arguments.");
}
if (source [start] == ')')
{
break;
}
else if (args.Any())
{
if (source [start] != ',')
{
throw new InvalidProjectFileException(string.Format("invalid function call arguments specification. ',' is expected, got '{0}'", source [start]));
}
start++;
SkipSpaces(ref start);
}
args.Add(ParseSingle(ref start, end));
} while (true);
start++;
return(args);
}
string Evaluate(string source, ExpressionList exprList)
{
if (exprList == null)
{
throw new ArgumentNullException("exprList");
}
return(string.Concat(exprList.Select(e => e.EvaluateAsString(CreateContext(source)))));
}
ExpressionList Parse(int start, int end)
{
if (string.IsNullOrWhiteSpace(source))
{
return(new ExpressionList());
}
var ret = new ExpressionList();
while (start < end)
{
int bak = start;
ret.Add(ParseSingle(ref start, end));
if (bak == start)
{
throw new Exception("Parser failed to progress token position: " + source);
}
}
return(ret);
}
