// V -> S | Identifier | String | Boolean | Integer | Decimal
private object MatchValue()
{
VerifyTokensExists();
if ((TokenType)tokens.Peek().Id == TokenType.Terminal)
{
return(MatchElement());
}
Token token = tokens.Pop();
object constValue;
switch ((TokenType)token.Id)
{
case TokenType.Identifier: constValue = token.Value; break;
case TokenType.String: constValue = token.Value.Substring(1, token.Value.Length - 2).Replace("''", "'"); break;
case TokenType.Boolean: constValue = BooleanParse(token.Value); break;
case TokenType.Integer: constValue = Int32.Parse(token.Value); break;
case TokenType.Decimal: constValue = Double.Parse(token.Value); break;
default: throw new Granular.Exception("Can't parse \"{0}\", value is expected, \"{1}\" was found at index {2}", text, token.Value, token.Start);
}
return(constValue);
}
private string MatchValue()
{
VerifyTokensExists();
Token token = tokens.Pop();
if ((TokenType)token.Id != TokenType.Value)
{
throw new Granular.Exception("Can't parse \"{0}\", \"{1}\" was not expected at index {2}", text, token.Value, token.Start);
}
return(token.Value);
}
private SnapshotLineRange?ReadNormal()
{
do
{
var oldStack = _stack;
if (oldStack.IsEmpty)
{
return(null);
}
var newStack = _stack.Pop();
var success = oldStack == Interlocked.CompareExchange(ref _stack, newStack, oldStack);
if (success)
{
return(oldStack.Value);
}
} while (true);
}