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/*
Crown Copyright (c) 1997
This TenDRA(r) Computer Program is subject to Copyright
owned by the United Kingdom Secretary of State for Defence
acting through the Defence Evaluation and Research Agency
(DERA). It is made available to Recipients with a
royalty-free licence for its use, reproduction, transfer
to other parties and amendment for any purpose not excluding
product development provided that any such use et cetera
shall be deemed to be acceptance of the following conditions:-
(1) Its Recipients shall ensure that this Notice is
reproduced upon any copies or amended versions of it;
(2) Any amended version of it shall be clearly marked to
show both the nature of and the organisation responsible
for the relevant amendment or amendments;
(3) Its onward transfer from a recipient to another
party shall be deemed to be that party's acceptance of
these conditions;
(4) DERA gives no warranty or assurance as to its
quality or suitability for any purpose and DERA accepts
no liability whatsoever in relation to any use to which
it may be put.
*/
%types%
/*
TYPES
The types correspond to those generated by the calculus. In addition,
ID represents an identifier name and STRING represents a string.
*/
ID ;
STRING ;
ENTRY ;
KEY ;
MAP ;
MSG ;
NAME ;
PARAM ;
PROP ;
TYPE ;
USAGE ;
LIST-ENTRY ;
LIST-MAP ;
LIST-MSG ;
LIST-NAME ;
LIST-PARAM ;
LIST-PROP ;
%terminals%
/*
TERMINALS
These terminals give the various terminals identified by the lexical
analysis routines.
*/
identifier : () -> ( :ID ) ;
string : () -> ( :STRING ) ;
alt-name ;
db-name ;
entries ;
key ;
keys ;
prefix ;
properties ;
rig ;
types ;
usage ;
comp-output ;
from-comp ;
from-db ;
arrow ;
colon ;
comma ;
equal ;
or ;
open-round ;
close-round ;
open-brace ;
close-brace ;
eof ;
!unknown ;
%productions%
/*
MESSAGE LIST
A message consists of a list of parameter names and strings.
*/
<find_param> : ( :ID, :LIST-PARAM ) -> ( :PARAM ) ;
<message_param> : ( :PARAM ) -> ( :MSG ) ;
<message_string> : ( :STRING ) -> ( :MSG ) ;
<empty_message_list> : () -> ( :LIST-MSG ) ;
<cons_message_list> : ( :MSG, :LIST-MSG ) -> ( :LIST-MSG ) ;
message-list : ( s : LIST-PARAM ) -> ( p : LIST-MSG ) = {
a = identifier ;
n = <find_param> ( a, s ) ;
m = <message_param> ( n ) ;
q = message-list ( s ) ;
p = <cons_message_list> ( m, q ) ;
||
a = string ;
m = <message_string> ( a ) ;
q = message-list ( s ) ;
p = <cons_message_list> ( m, q ) ;
||
p = <empty_message_list> ;
} ;
/*
MAPPING LIST
A mapping consists of a message list and an associated key.
*/
<find_key> : ( :ID ) -> ( :KEY ) ;
<make_map> : ( :KEY, :LIST-MSG, :LIST-MSG ) -> ( :MAP ) ;
<empty_map_list> : () -> ( :LIST-MAP ) ;
<cons_map_list> : ( :MAP, :LIST-MAP ) -> ( :LIST-MAP ) ;
map-list : ( s : LIST-PARAM ) -> ( p : LIST-MAP ) = {
key ; open-round ; a = identifier ; close-round ;
k = <find_key> ( a ) ;
m1 = message-list ( s ) ;
{
or ; m2 = message-list ( s ) ;
||
m2 = m1 ;
} ;
n = <make_map> ( k, m1, m2 ) ;
q = map-list ( s ) ;
p = <cons_map_list> ( n, q ) ;
||
p = <empty_map_list> ;
} ;
/*
PROPERTIES LIST
A properties list is a non-empty, comma-separated list of properties.
*/
<find_props> : ( :ID ) -> ( :PROP ) ;
<empty_props_list> : () -> ( :LIST-PROP ) ;
<cons_props_list> : ( :PROP, :LIST-PROP ) -> ( :LIST-PROP ) ;
props-list : () -> ( p : LIST-PROP ) = {
a = identifier ;
b = <find_props> ( a ) ;
{
comma ; q = props-list ;
|| q = <empty_props_list> ;
} ;
p = <cons_props_list> ( b, q ) ;
} ;
/*
SIGNATURE
A message signature consists of an optional list of types and parameter
names.
*/
<find_type> : ( :ID ) -> ( :TYPE ) ;
<make_param> : ( :TYPE, :ID ) -> ( :PARAM ) ;
<empty_param_list> : () -> ( :LIST-PARAM ) ;
<cons_param_list> : ( :PARAM, :LIST-PARAM ) -> ( :LIST-PARAM ) ;
param-list : () -> ( p : LIST-PARAM ) = {
a = identifier ; t = <find_type> ( a ) ; colon ;
b = identifier ;
c = <make_param> ( t, b ) ;
{
comma ; q = param-list ;
|| q = <empty_param_list> ;
} ;
p = <cons_param_list> ( c, q ) ;
} ;
signature : () -> ( p : LIST-PARAM ) = {
p = param-list ;
|| p = <empty_param_list> ;
} ;
/*
DATABASE ENTRY
This rule describes the main component of the input, an individual
database entry.
*/
<null_identifier> : () -> ( :ID ) ;
<find_usage> : ( :ID ) -> ( :USAGE ) ;
<null_usage> : () -> ( :USAGE ) ;
<make_entry> : ( :ID, :ID, :LIST-PARAM, :USAGE, :USAGE, :LIST-PROP,
:LIST-MAP ) -> ( :ENTRY ) ;
entry : () -> ( e : ENTRY ) = {
a = identifier ; open-round ; s = signature ; close-round ;
open-brace ;
{
alt-name ; colon ; b = identifier ;
|| b = <null_identifier> ;
} ;
{
usage ; colon ; c = identifier ;
u = <find_usage> ( c ) ;
{
or ; d = identifier ;
w = <find_usage> ( d ) ;
||
w = u ;
} ;
v = w ;
||
u = <null_usage> ;
v = <null_usage> ;
} ;
{
properties ; colon ;
{
q = props-list ;
|| q = <empty_props_list> ;
} ;
p = q ;
||
p = <empty_props_list> ;
} ;
m = map-list ( s ) ;
close-brace ;
e = <make_entry> ( a, b, s, u, v, p, m ) ;
} ;
/*
ENTRIES LIST
The main component of the top level unit is a list of entries.
*/
<empty_entry_list> : () -> ( :LIST-ENTRY ) ;
<cons_entry_list> : ( :ENTRY, :LIST-ENTRY ) -> ( :LIST-ENTRY ) ;
entries-list : () -> ( p : LIST-ENTRY ) = {
a = entry ;
q = entries-list ;
p = <cons_entry_list> ( a, q ) ;
||
p = <empty_entry_list> ;
} ;
/*
IDENTIFIER LIST
The various lists of types, properties etc. in the top level unit are
just simple lists of identifiers.
*/
<empty_name_list> : () -> ( :LIST-NAME ) ;
<make_name> : ( :ID ) -> ( :NAME ) ;
<make_name_aux> : ( :ID ) -> ( :NAME ) ;
<cons_name_list> : ( :NAME, :LIST-NAME ) -> ( :LIST-NAME ) ;
<join_name_list> : ( :NAME, :LIST-NAME ) -> ( :LIST-NAME ) ;
name-seq : () -> ( p : LIST-NAME, q : LIST-NAME, r : LIST-NAME ) = {
a = identifier ;
n = <make_name> ( a ) ;
{
equal ; b = identifier ;
m = <make_name_aux> ( b ) ;
{
or ; c = identifier ;
k1 = <make_name_aux> ( c ) ;
||
k1 = m ;
} ;
k = k1 ;
||
m = n ;
k = n ;
} ;
{
comma ; ( p1, q1, r1 ) = name-seq ;
||
p1 = <empty_name_list> ;
q1 = <empty_name_list> ;
r1 = <empty_name_list> ;
} ;
p = <cons_name_list> ( n, p1 ) ;
q = <join_name_list> ( m, q1 ) ;
r = <join_name_list> ( k, r1 ) ;
} ;
name-list : () -> ( p : LIST-NAME, q : LIST-NAME, r : LIST-NAME ) = {
( p, q, r ) = name-seq ;
||
p = <empty_name_list> ;
q = <empty_name_list> ;
r = <empty_name_list> ;
} ;
/*
COMPLETE UNIT
The input consists of various standard information plus lists of
types, properties, keys, usages and entries.
*/
<set_db> : ( :ID, :ID ) -> () ;
<set_rig> : ( :ID ) -> () ;
<set_prefix> : ( :ID, :ID, :ID ) -> () ;
<set_types> : ( :LIST-NAME, :LIST-NAME, :LIST-NAME ) -> () ;
<set_props> : ( :LIST-NAME, :LIST-NAME, :LIST-NAME ) -> () ;
<set_keys> : ( :LIST-NAME, :LIST-NAME, :LIST-NAME ) -> () ;
<set_usages> : ( :LIST-NAME, :LIST-NAME, :LIST-NAME ) -> () ;
<set_entries> : ( :LIST-ENTRY ) -> () ;
<syntax_error> : () -> () ;
unit : () -> () = {
/* Database name */
{
db-name ; colon ; d = identifier ;
{
or ; e = identifier ;
|| e = d ;
} ;
<set_db> ( d, e ) ;
||
$ ;
} ;
{
rig ; colon ; r = identifier ;
<set_rig> ( r ) ;
||
$ ;
} ;
/* Standard prefixes */
{
prefix ; colon ;
{
comp-output ; arrow ; q1 = identifier ;
|| q1 = <null_identifier> ;
} ;
{
from-comp ; arrow ; q2 = identifier ;
|| q2 = <null_identifier> ;
} ;
{
from-db ; arrow ; q3 = identifier ;
|| q3 = <null_identifier> ;
} ;
<set_prefix> ( q1, q2, q3 ) ;
||
q1 = <null_identifier> ;
q2 = <null_identifier> ;
q3 = <null_identifier> ;
<set_prefix> ( q1, q2, q3 ) ;
} ;
/* List of types */
{
types ; colon ; ( t1, t2, t3 ) = name-list ;
||
t1 = <empty_name_list> ;
t2 = <empty_name_list> ;
t3 = <empty_name_list> ;
} ;
<set_types> ( t1, t2, t3 ) ;
/* List of properties */
{
properties ; colon ; ( p1, p2, p3 ) = name-list ;
||
p1 = <empty_name_list> ;
p2 = <empty_name_list> ;
p3 = <empty_name_list> ;
} ;
<set_props> ( p1, p2, p3 ) ;
/* List of keys */
{
keys ; colon ; ( k1, k2, k3 ) = name-list ;
||
k1 = <empty_name_list> ;
k2 = <empty_name_list> ;
k3 = <empty_name_list> ;
} ;
<set_keys> ( k1, k2, k3 ) ;
/* List of usages */
{
usage ; colon ; ( u1, u2, u3 ) = name-list ;
||
u1 = <empty_name_list> ;
u2 = <empty_name_list> ;
u3 = <empty_name_list> ;
} ;
<set_usages> ( u1, u2, u3 ) ;
/* List of entries */
{
entries ; colon ; e = entries-list ;
|| e = <empty_entry_list> ;
} ;
<set_entries> ( e ) ;
eof ;
##
<syntax_error> ;
} ;
%entry% unit ;