head	1.4;
access;
symbols;
locks; strict;
comment	@# @;


1.4
date	2001.11.16.19.44.06;	author ms;	state dead;
branches;
next	1.3;

1.3
date	2001.11.16.19.41.50;	author ms;	state Exp;
branches;
next	1.2;

1.2
date	2001.11.14.13.59.21;	author ms;	state Exp;
branches;
next	1.1;

1.1
date	2001.11.12.20.18.01;	author ms;	state Exp;
branches;
next	;


desc
@@


1.4
log
@L2 grammar for the L2CDL (L2 Channel Description Language) removed to l2.pod
@
text
@=pod

=head1 NAME

B<L2CDL> - Logging Library Channel Definition Language

=head1 EBNF GRAMMAR

B<L2CDL> - Logging Library Channel Definition Language

tree               : stream                                /* channel tree */
                   ;

stream             : channel                         /* stream of channels */
                   | channel T_OP_ARROW stream
                   | channel T_OP_ARROW '{' streams '}'
                   ;

streams            : stream                     /* list of sibling streams */
                   | stream ';' streams
                   ;

/* channel */
channel            : channel_level '/' channel_level ':' channel_cons
                   | channel_level ':' channel_cons
                   | channel_cons
                   ;

channel_level      : T_ID                                 /* channel level */
                   | '(' channel_level_mask ')'
                   ;

channel_level_mask : T_ID                            /* channel level mask */
                   | T_ID '|' channel_level_mask
                   ;

channel_cons       : T_ID channel_params            /* channel constructor */
                   ;

channel_params     : /* empty */                     /* channel parameters */
                   | '(' channel_param_list ')'
                   ;

channel_param_list : /* empty */                 /* channel parameter list */
                   | channel_param
                   | channel_param ',' channel_param_list
                   ;

channel_param      : T_ID '=' T_PARAM                 /* channel parameter */
                   ;
@


1.3
log
@Reflect last state of grammar before killing it (it's in the pod file now.)
@
text
@@


1.2
log
@Corrected grammar typos and indentation.
@
text
@d1 1
a1 2
tree : stream                                              /* channel tree */
     ;
d3 29
a31 17
stream : channel                                     /* stream of channels */
       | channel T_OP_ARROW stream
       | channel T_OP_ARROW '{' streams '}'
       ;

streams : stream                                /* list of sibling streams */
        | stream ';' streams
        ;

channel : channel_level '/' channel_level ':' channel_cons      /* channel */
        | channel_level ':' channel_cons
        | channel_cons
        ;

channel_level : T_ID                                      /* channel level */
              | '(' channel_level_mask ')'
              ;
d37 2
a38 2
channel_cons : T_ID channel_params                  /* channel constructor */
             ;
d40 3
a42 3
channel_params : /* empty */                         /* channel parameters */
               | '(' channel_param_list ')'
               ;
d45 3
a47 3
               | channel_param
               | channel_param ',' channel_param_list
               ;
d49 2
a50 2
channel_param  : T_ID '=' T_PARAM                     /* channel parameter */
               ;
@


1.1
log
@Condensed and clarified EBNF grammar description of the L2 language.
@
text
@d2 1
a2 1
    ;
d5 3
a7 3
    | channel T_OP_ARROW stream
    | channel T_OP_ARROW '{' streams '}'
    ;
d10 2
a11 2
    | stream ';' streams
    ;
d14 3
a16 3
    | channel_level ':' channel_cons
    | channel_cons
    ;
d19 2
a20 2
    | '(' channel_level_mask ')'
    ;
d23 2
a24 2
    | T_ID '|' channel_level_mask
    ;
d26 2
a27 2
channel_cons : T_ID                                 /* channel constructor */
    ;
d30 2
a31 2
    | '(' channel_param_list ')'
    ;
d34 3
a36 3
    | channel_param
    | channel_param ',' channel_param_list
    ;
d38 2
a39 2
channel_param  : T_ID '='                             /* channel parameter */
    ;
@