VDM-10 Language Manual

Appendix A
The Syntax of the VDM Languages
This appendix specifies the complete syntax for the VDM languages.
A.1 VDM-SL Document
document = any module, { any module }
| definition block, { definition block } ;
any module = module ;
A.2 Modules
This entire subsection is not present in the current version of the VDM-SL standard.
module = ‘module’, identifier, interface,
[ module body ], ‘end’, identifier ;
interface = [ import definition list ],
export definition ;
import definition list = ‘imports’, import definition,
{ ‘,’, import definition } ;
import definition = ‘from’, identifier, import module signature ;
import module signature = ‘all’
| import signature, { import signature } ;
import signature = import types signature
| import values signature
| import functions signature
| import operations signature ;
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