private Node ParseTerm(int precedence)
{
Node result = null;
switch (Current.Kind)
{
case TokenType.NumericLiteral:
result = Constant();
AdvanceToken();
break;
case TokenType.Identifier:
var next = Next;
if (next == null)
{
result = Variable();
AdvanceToken();
break;
}
if (next.Kind == TokenType.Dot)
{
return ParsePropertyAccess();
}
if (next.Kind == TokenType.OpenParen)
{
return ParseFunctionCall();
}
result = Variable();
AdvanceToken();
break;
case TokenType.OpenParen:
AdvanceToken();
result = ParseExpression(0);
AdvanceToken(TokenType.CloseParen);
break;
default:
ReportError("Expected a number, a variable, a function or a parenthesized expression");
break;
}
return result;
}
private Parser(IList<Token> tokens)
{
result = new ParseResult();
this.tokens = tokens;
length = tokens.Count;
}