private static bool IsArithmeticOperator(Token currentToken, Precendence precendence)
{
switch (precendence)
{
case Precendence.Level1:
return(currentToken.TokenType == StatementType.Star ||
currentToken.TokenType == StatementType.FSlash ||
currentToken.TokenType == StatementType.Mod ||
currentToken.TokenType == StatementType.In ||
currentToken.TokenType == StatementType.NotIn);
case Precendence.Level2:
return(currentToken.TokenType == StatementType.Plus ||
currentToken.TokenType == StatementType.Hyphen);
case Precendence.Level3:
return(true);
}
return(false);
}
private RdlSyntaxNode ComposeArithmeticOperators(Precendence precendence)
{
RdlSyntaxNode node = null;
switch (precendence)
{
case Precendence.Level1:
{
node = ComposeArithmeticOperators(Precendence.Level2);
while (IsArithmeticOperator(Current, Precendence.Level1))
{
switch (Current.TokenType)
{
case StatementType.Star:
Consume(StatementType.Star);
node = new StarNode(node, ComposeBaseTypes());
break;
case StatementType.FSlash:
Consume(StatementType.FSlash);
node = new FSlashNode(node, ComposeBaseTypes());
break;
case StatementType.Mod:
Consume(StatementType.Mod);
node = new ModuloNode(node, ComposeBaseTypes());
break;
case StatementType.In:
Consume(StatementType.In);
node = new InNode(node, ComposeArgs());
break;
case StatementType.NotIn:
Consume(StatementType.NotIn);
node = new NotInNode(node, ComposeArgs());
break;
}
}
break;
}
case Precendence.Level2:
{
node = ComposeArithmeticOperators(Precendence.Level3);
while (IsArithmeticOperator(Current, Precendence.Level2))
{
switch (Current.TokenType)
{
case StatementType.Plus:
Consume(StatementType.Plus);
node = new AddNode(node, ComposeBaseTypes());
break;
case StatementType.Hyphen:
Consume(StatementType.Hyphen);
node = new HyphenNode(node, ComposeBaseTypes());
break;
}
}
break;
}
case Precendence.Level3:
node = ComposeBaseTypes();
break;
}
return(node);
}
