[Imprint][Data Privacy Statement][E-Mail]

Back to main index. View the specification. View theorem base summary, View theorem base listing, the used properties by spec, the dependency list, the symbol table,

Specification eval
enrich
   copy, 
   elem-option
with
   
   
   
   
   procedures eval# ref, list, heap : elem?  nondeterministic;;
   

   

   

   

   declarations eval
                : eval#(r, x, H; a?)
                  {let nd = [?]
                   in {read(r, H; nd); 
                       if x = []
                       then a? := some(nd.value)
                       else if ¬ x.first ∈ nd.edges then a? := none else eval#((nd.edges)[x.first], x.rest, H; a?)}
                  }
                ;
end enrich