17 lines
619 B
BNF
17 lines
619 B
BNF
|
range-set ::= range ( logical-or range ) *
|
||
|
|
logical-or ::= ( ' ' ) * '||' ( ' ' ) *
|
||
|
|
range ::= hyphen | simple ( ' ' simple ) * | ''
|
||
|
|
hyphen ::= partial ' - ' partial
|
||
|
|
simple ::= primitive | partial | tilde | caret
|
||
|
|
primitive ::= ( '<' | '>' | '>=' | '<=' | '=' ) partial
|
||
|
|
partial ::= xr ( '.' xr ( '.' xr qualifier ? )? )?
|
||
|
|
xr ::= 'x' | 'X' | '*' | nr
|
||
|
|
nr ::= '0' | [1-9] ( [0-9] ) *
|
||
|
|
tilde ::= '~' partial
|
||
|
|
caret ::= '^' partial
|
||
|
|
qualifier ::= ( '-' pre )? ( '+' build )?
|
||
|
|
pre ::= parts
|
||
|
|
build ::= parts
|
||
|
|
parts ::= part ( '.' part ) *
|
||
|
|
part ::= nr | [-0-9A-Za-z]+
|