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Check-in Number:
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1296 | |
| Date: |
2001-Nov-12 21:18:01 (local)
2001-Nov-12 20:18:01 (UTC) |
| User: | ms |
| Branch: | |
| Comment: |
Condensed and clarified EBNF grammar description of the L2 language. |
| Tickets: |
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| Inspections: |
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| Files: |
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ossp-pkg/l2/l2_spec_ebnf -> 1.1
*** /dev/null Fri Apr 19 15:55:00 2024
--- - Fri Apr 19 15:57:53 2024
***************
*** 0 ****
--- 1,39 ----
+ 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_level '/' channel_level ':' channel_cons /* channel */
+ | 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 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 '=' /* channel parameter */
+ ;
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