On Friday, November 26, 2010 at 19:23:24 (+0100) Martijn Reuvers writes:
>Hello Bill,
>
>The grammar below does the trick for your command (I stripped it
>somewhat, to quickly get it working). See the SHELL_COMMAND token,
>notice the options part with the greedy identifier. It reads until it
>encounters the newline stuff. You need to have something in front of
>it, like SHELL in this example - otherwise it would match anything,
>which is not what you want.
Thanks Martijn. I tried replacing my original COMMAND_TEXT with
your suggestion:
COMMAND_TEXT: (options {greedy=false;} : . )* '\r'? '\n' {
setText(getText().trim());
}
;
and though this reduces the conflict, I still have one I don't know how
to resolve:
error(208): Command.g:124:1: The following token definitions can never be
matched because prior tokens match the same input: NEWLINE
I need the NEWLINE so I can limit the commands to a single line. Here is
one part of the grammar I did not share that is relevant, along with
the parts I changed with your help:
command
: (clean|shell) (NEWLINE | EOF)
| NEWLINE
;
[clean as before]
shell : 'shell' timeoutOption? COMMAND_TEXT ;
[timeoutOption as before, etc.]
COMMAND_TEXT: (options {greedy=false;} : . )* '\r'? '\n' {
setText(getText().trim());
}
;
EMAIL: ~('\n' | '\r' | ' ' | '"')+ ;
NEWLINE: '\r'? '\n' ;
WS: (' ' | '\t')+ { skip(); } ;
So, how do I preserve the single-line command idiom with the shell command
"read-to-end-of" line part?
Bill
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