VDM-10 Language Manual

VDM-10 Language Manual
17.2.2 The Exports Section
Syntax: interface = [ import definition list ],
export definition ;
export definition = ‘exports’, export module signature ;
export module signature = ‘all’
| export signature,
{ export signature } ;
export signature = export types signature
| values signature
| export functions signature
| operations signature ;
export types signature = ‘types’, type export,
{ ‘;’, type export }, [ ‘;’ ] ;
type export = [ ‘struct’ ], name ;
values signature = ‘values’, value signature,
{ ‘;’, value signature }, [ ‘;’ ] ;
value signature = name list, ‘:’, type ;
export functions signature =
‘functions’ function export,
{ ‘;’, function export } ;
function export = name list, [ type variable list ], ‘:’,
function type ;
functions signature = ‘functions’ function signature,
{ ‘;’, function signature }, [ ‘;’ ] ;
function signature = name list, ‘:’, function type ;
operations signature = ‘operations’ operation signature,
{ ‘;’, operation signature }, [ ‘;’ ] ;
operation signature = name list, ‘:’, operation type ;
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