[ragel-users] Help with extracting a list of numbers

[Adrian Thurston]

Hi Manoj,

Are you sure the null is being sent to the parser? If it is then
printNumber should be executed on the last character.

Adrian

Manoj Rajagopalan wrote:
> Hi all,
> 
>    I'm trying to write a pattern to extract a list of numbers following 
> the keyword bond and I'm not able to figure out why my pattern below 
> always skips the last number
> 
>    My input is of the form:
> 
>    bond <number> <number> ...
> 
> %%{
>      machine bond_parser;
> 
>      whole_number = digit+    >to{intVal=0;}   ${intVal = intVal*10 + 
> (fc-'0');}    ;
> 
>      main :=
>          space* 'bond'
>          (space+ whole_number %printNumber)+
>          space* 0;
> }%%
> 
> where printNumber is an action to print the number just updated into the 
> integer variable intVal.
> 
> The 0 at the end of the pattern is the NULL character that cin.getline() 
> adds when reading upto the newline character from the console.
> 
> I realize this may be due to the leaving action for the last number that 
> never gets called but could someone tell me a way around this?
> 
> Thanks,
> Manoj
> 
> > 
>