Ejemplo n.º 1
0
  // TODO fix BoogieHelperFunctions s.t. we can remove qual_name and
  // returntype because they are already in proc
  public InvokeExpression(BoogieProcedure proc, LinkedList<Expression> args) {
    invokedProcedure = proc;
    qualifiedName = proc.getName();
    if (proc.getReturnVariable() != null) {
      returnType = proc.getReturnVariable().getType();
    } else {
      returnType = BoogieBaseTypes.getVoidType();
    }

    arguments = args;
  }
Ejemplo n.º 2
0
  private ProverFun procedure2ProverExpr(BoogieProcedure proc) {
    HashMap<Variable, ProverExpr> localbound = new HashMap<Variable, ProverExpr>();
    if (!usedFunctions.containsKey(proc)) {
      LinkedList<ProverType> args = new LinkedList<ProverType>();
      int idx = 0;
      for (Variable v : proc.getParameterList()) {
        ProverExpr arg = theoremProver.mkBoundVariable(idx++, type2ProverSort(v.getType()));
        args.add(arg.getType());
        localbound.put(v, arg);
      }

      ProverFun vcf = null;
      ProverType[] arr = args.toArray(new ProverType[args.size()]);
      if (proc.isPure()
          && proc.getRootBlock() != null
          && proc.getRootBlock().getStatements().size() == 1) {
        // TODO: this is a hack:
        // we assume that this case only occurs for prelude functions
        // which have only one statement
        // this will not work in any other case
        Statement stmt = proc.getRootBlock().getStatements().get(0);
        ProverExpr b = null;
        if (stmt instanceof ExpressionStatement) {
          ExpressionStatement es = (ExpressionStatement) stmt;
          b = expression2ProverExpr(es.getExpression(), localbound);
        } else {
          throw new RuntimeException("procedure2ProverExpr failed");
        }
        vcf = theoremProver.mkDefinedFunction(getProverFriendlyName(proc.getName()), arr, b);
      } else {
        vcf =
            theoremProver.mkUnintFunction(
                getProverFriendlyName(proc.getName()),
                arr,
                type2ProverSort(proc.getReturnVariable().getType()));

        // TODO: uninterpreted functions?
      }
      usedFunctions.put(proc, vcf);
    }
    return usedFunctions.get(proc);
  }