Multiligne comments in a file

[Leo]

Hi,

I write a grammar file to manage a cobol file and i have some problems with multilines comments and optimization code.

I need you helping my to optimize my code.

Thank you in advance

Grammar file

comment
 :  NUMBER  KEY  PATERN
 |  OTHER_CHAR .* OTHER_CHAR //Everything starting by *
 |  '88' .* (OTHER_CHAR | LETTER | '.')*
 |  '*Multiplicity = (0..1)' .*  '*'
 ;


PATERN
 : 'OCCURS 0 TO ' (NUMBER | 's') ' TIMES.'
 ;
LETTER
 : 'A'..'Z' | 'a'..'z'
 ;
KEY
 : LETTER NUMBER (SEPARATOR | LETTER | NUMBER)*
 ;


OPEN
 :'('
 ;
CLOSE
 : ').'
 ;
SEPARATOR
 : '-'
 ;
NUMBER
 : '0'..'9' ('0'..'9')*
 ;
WS  
 : ' ' {$channel=HIDDEN;}
 |'\t' {$channel=HIDDEN;}
 |'\n' {$channel=HIDDEN;}
 |'\r' {$channel=HIDDEN;}
 ;
OTHER_CHAR
 :  '*'
 |  '"' {$channel=HIDDEN;}
 /*
 |  '\''{$channel=HIDDEN;}
 |  '/' {$channel=HIDDEN;}
 |  '-' {$channel=HIDDEN;}
 |  '_' {$channel=HIDDEN;}
 |  '>' {$channel=HIDDEN;}
 |  '<' {$channel=HIDDEN;}
 |  ':' {$channel=HIDDEN;}
 |  '=' {$channel=HIDDEN;}
 |  '\\' {$channel=HIDDEN;}
 */
 ;

Warning(200) 8 times :

Decision can match input such as "OTHER_CHAR NUMBER KEY PIC OPEN NUMBER CLOSE '88' {EOF, OTHER_CHAR}" using multiple alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input
 |---> |  '88' .* (OTHER_CHAR | LETTER | '.')*



Decision can match input such as "OTHER_CHAR NUMBER KEY PIC OPEN NUMBER CLOSE EOF" using multiple alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input
 |---> |  '88' .* (OTHER_CHAR | LETTER | '.')*


Decision can match input such as "OTHER_CHAR NUMBER KEY PIC OPEN NUMBER CLOSE OTHER_CHAR" using multiple alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input
 |---> |  '88' .* (OTHER_CHAR | LETTER | '.')*


Decision can match input such as "OTHER_CHAR NUMBER KEY PIC OPEN NUMBER CLOSE '*Multiplicity = (0..1)' OTHER_CHAR NUMBER KEY PIC OPEN NUMBER CLOSE OTHER_CHAR '*Multiplicity = (0..1)'" using multiple alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input
 |---> |  '88' .* (OTHER_CHAR | LETTER | '.')*


Decision can match input such as "OTHER_CHAR {EOF, OTHER_CHAR}" using multiple alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input
 |---> |  '88' .* (OTHER_CHAR | LETTER | '.')*


Decision can match input such as "OTHER_CHAR NUMBER KEY PIC OPEN NUMBER CLOSE '*Multiplicity = (0..1)' OTHER_CHAR NUMBER KEY PIC OPEN NUMBER CLOSE OTHER_CHAR '88' OTHER_CHAR NUMBER KEY PIC OPEN NUMBER CLOSE '88' {LETTER, '.'} '*Multiplicity = (0..1)'" using multiple alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input
 |---> |  '88' .* (OTHER_CHAR | LETTER | '.')*


Decision can match input such as "OTHER_CHAR NUMBER KEY PIC OPEN NUMBER CLOSE '*Multiplicity = (0..1)' OTHER_CHAR NUMBER KEY PIC OPEN NUMBER CLOSE OTHER_CHAR '*' {EOF, OTHER_CHAR}" using multiple alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input
 |---> |  '88' .* (OTHER_CHAR | LETTER | '.')*


Decision can match input such as "OTHER_CHAR NUMBER KEY PIC OPEN NUMBER CLOSE '88' {LETTER, '.'} NUMBER KEY PIC OPEN NUMBER CLOSE '88' '*Multiplicity = (0..1)' {EOF, OTHER_CHAR}" using multiple alternatives: 1, 2
As a result, alternative(s) 2 were disabled for that input
 |---> |  '88' .* (OTHER_CHAR | LETTER | '.')*




8 warnings


BUILD SUCCESSFUL
Total time: 1 second