VDM-10 Language Manual

Appendix A. The Syntax of the VDM Languages
seq enum pattern = ‘[’, [ pattern list ], ‘]’ ;
seq conc pattern = pattern, ‘ˆ’, pattern ;
tuple pattern = ‘mk ’, ‘(’, pattern, ‘,’, pattern list, ‘)’ ;
record pattern = ‘mk ’, 3 name, ‘(’, [ pattern list ], ‘)’ ;
A.10.2
pattern list = pattern, { ‘,’, pattern } ;
Bindings
pattern bind = pattern | bind ;
bind = set bind | type bind ;
set bind = pattern, ‘in set’, expression ;
type bind = pattern, ‘:’, type ;
bind list = multiple bind, { ‘,’, multiple bind } ;
multiple bind = multiple set bind
| multiple type bind ;
multiple set bind = pattern list, ‘in set’, expression ;
multiple type bind = pattern list, ‘:’, type ;
type bind list = type bind, { ‘,’, type bind } ;
3 Note: no delimiter is allowed
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