private List<PExp> extractConsequentsFromParameter(ProgParameterSymbol p) {
    List<PExp> result = new ArrayList<>();
    PExp incParamExp = new PSymbolBuilder(p.asPSymbol()).incoming(true).build();
    PExp paramExp = new PSymbolBuilder(p.asPSymbol()).incoming(false).build();

    if (p.getDeclaredType() instanceof ProgNamedType) {
      ProgNamedType t = (ProgNamedType) p.getDeclaredType();
      PExp exemplar = new PSymbolBuilder(t.getExemplarName()).mathClssfctn(t.toMath()).build();

      if (t instanceof PTRepresentation) {
        ProgReprTypeSymbol repr = ((PTRepresentation) t).getReprTypeSymbol();

        PExp convention = repr.getConvention();
        PExp corrFnExp = repr.getCorrespondence();
        result.add(convention.substitute(t.getExemplarAsPSymbol(), paramExp));
      }
      if (p.getMode() == ParameterMode.PRESERVES || p.getMode() == ParameterMode.RESTORES) {
        PExp equalsExp =
            g.formEquals(paramExp, incParamExp)
                .withVCInfo(
                    p.getDefiningTree().getStart(),
                    "Ensure parameter " + p.getName() + " is restored");
        result.add(equalsExp);
      } else if (p.getMode() == ParameterMode.CLEARS) {
        PExp init =
            ((ProgNamedType) p.getDeclaredType())
                .getInitializationEnsures()
                .substitute(exemplar, paramExp);
        result.add(init);
      }
    }
    return result;
  }
  private List<PExp> extractAssumptionsFromParameter(ProgParameterSymbol p) {
    List<PExp> resultingAssumptions = new ArrayList<>();
    if (p.getDeclaredType() instanceof ProgNamedType) {

      // both PTFamily AND PTRepresentation are a PTNamed
      ProgNamedType declaredType = (ProgNamedType) p.getDeclaredType();
      PExp exemplar = declaredType.getExemplarAsPSymbol();
      if (declaredType instanceof ProgFamilyType) {
        PExp constraint = ((ProgFamilyType) declaredType).getConstraint();

        constraint = constraint.substitute(getSpecializationsForFacility(p.getTypeQualifier()));
        resultingAssumptions.add(
            constraint.substitute(
                declaredType.getExemplarAsPSymbol(),
                p.asPSymbol())); // ASSUME TC (type constraint -- since we're conceptual)
      } else if (declaredType instanceof PTRepresentation) {
        ProgReprTypeSymbol repr = ((PTRepresentation) declaredType).getReprTypeSymbol();
        PExp convention = repr.getConvention();

        resultingAssumptions.add(
            convention.substitute(declaredType.getExemplarAsPSymbol(), p.asPSymbol()));
        // ASSUME RC (repr convention -- since we're a repr)
        resultingAssumptions.add(repr.getCorrespondence());
      }
    } else { // PTGeneric
      //    resultingAssumptions.add(g.formInitializationPredicate(
      //            p.getDeclaredType(), p.getName()));
    }
    return resultingAssumptions;
  }
  @Override
  public void exitOperationProcedureDecl(ResolveParser.OperationProcedureDeclContext ctx) {
    Scope s = symtab.getScope(ctx);
    VCAssertiveBlockBuilder block = assertiveBlocks.pop();
    List<ProgParameterSymbol> paramSyms = s.getSymbolsOfType(ProgParameterSymbol.class);

    PExp corrFnExpEnsures =
        perParameterCorrFnExpSubstitute(
            paramSyms,
            tr.getMathExpASTFor(
                g, ctx.ensuresClause())); // postcondition[params 1..i <-- corr_fn_exp]
    corrFnExpEnsures =
        corrFnExpEnsures.withVCInfo(ctx.getStart(), "Ensures clause of " + ctx.name.getText());
    Token loc = ctx.ensuresClause() != null ? ctx.ensuresClause().getStart() : ctx.getStart();

    List<PExp> paramConsequents = new ArrayList<>();
    Utils.apply(paramSyms, paramConsequents, this::extractConsequentsFromParameter);

    // add verification statements to the assertive context/block
    block.stats(Utils.collect(VCRuleBackedStat.class, ctx.stmt(), stats));

    // add any additional confirms from the parameters, etc
    for (ProgParameterSymbol p : paramSyms) {
      confirmParameterConsequentsForBlock(block, p); // modfies 'block' with additional confims!
    }
    // TODO: Tomorrow look at the verification statements in the assertive context for
    // int_do_nothing, then
    block.finalConfirm(corrFnExpEnsures);
    outputFile.addAssertiveBlock(block.build());
  }
 // The only way I'm current aware of a local requires clause getting changed
 // is by passing a locally defined type  to an operation (something of type
 // PTRepresentation). This method won't do anything otherwise.
 @NotNull
 private PExp perParameterCorrFnExpSubstitute(
     @NotNull List<ProgParameterSymbol> params, @Nullable PExp requiresOrEnsures) {
   List<PExp> result = new ArrayList<>();
   PExp resultingClause = requiresOrEnsures;
   for (ProgParameterSymbol p : params) {
     if (p.getDeclaredType() instanceof PTRepresentation) {
       ProgReprTypeSymbol repr = ((PTRepresentation) p.getDeclaredType()).getReprTypeSymbol();
       PExp corrFnExp = repr.getCorrespondence();
       // distribute conc.X into the clause passed
       Map<PExp, PExp> concReplMapping = new HashMap<>();
       concReplMapping.put(repr.exemplarAsPSymbol(), repr.conceptualExemplarAsPSymbol());
       concReplMapping.put(repr.exemplarAsPSymbol(true), repr.conceptualExemplarAsPSymbol(true));
       resultingClause = resultingClause.substitute(concReplMapping);
     }
   }
   return resultingClause == null ? g.getTrueExp() : resultingClause;
 }
 @Override
 public void exitTypeImplInit(ResolveParser.TypeImplInitContext ctx) {
   PExp typeInitEnsures = g.getTrueExp();
   PExp convention = currentTypeReprSym.getConvention();
   PExp correspondence = currentTypeReprSym.getCorrespondence();
   if (currentTypeReprSym.getDefinition() != null) {
     typeInitEnsures =
         currentTypeReprSym.getDefinition().getProgramType().getInitializationEnsures();
   }
   VCAssertiveBlockBuilder block = assertiveBlocks.pop();
   PExp newInitEnsures =
       typeInitEnsures.substitute(
           currentTypeReprSym.exemplarAsPSymbol(),
           currentTypeReprSym.conceptualExemplarAsPSymbol());
   // block.stats(Utils.collect(VCRuleBackedStat.class, ctx.stmt(), stats));
   // block.confirm(convention);  //order here is important
   block.assume(correspondence);
   throw new UnsupportedOperationException("re-institute the final confirm for this dan");
   // block.finalConfirm(newInitEnsures, "Initialization-ensures clause of " +
   // currentTypeReprSym.getName());
   // outputFile.addAssertiveBlock(block.build());
 }
  private void confirmParameterConsequentsForBlock(
      VCAssertiveBlockBuilder block, ProgParameterSymbol p) {
    PExp incParamExp = new PSymbolBuilder(p.asPSymbol()).incoming(true).build();
    PExp paramExp = new PSymbolBuilder(p.asPSymbol()).incoming(false).build();

    if (p.getDeclaredType() instanceof ProgNamedType) {
      ProgNamedType t = (ProgNamedType) p.getDeclaredType();
      PExp exemplar = new PSymbolBuilder(t.getExemplarName()).mathClssfctn(t.toMath()).build();

      if (t instanceof PTRepresentation) {
        ProgReprTypeSymbol repr = ((PTRepresentation) t).getReprTypeSymbol();

        PExp convention = repr.getConvention();
        PExp corrFnExp = repr.getCorrespondence();
        // if we're doing this its going to be on a procedure decl or op-proc decl, so just
        // say block.definingTree
        PExp newConvention =
            convention
                .substitute(t.getExemplarAsPSymbol(), paramExp)
                .withVCInfo(block.definingTree.getStart(), "Convention for " + t.getName());
        block.confirm(block.definingTree, newConvention);
      }
      if (p.getMode() == ParameterMode.PRESERVES || p.getMode() == ParameterMode.RESTORES) {
        PExp equalsExp =
            g.formEquals(paramExp, incParamExp)
                .withVCInfo(
                    block.definingTree.getStart(),
                    "Ensure parameter " + p.getName() + " is restored");
        block.confirm(block.definingTree, equalsExp);
      } else if (p.getMode() == ParameterMode.CLEARS) {
        PExp init =
            ((ProgNamedType) p.getDeclaredType())
                .getInitializationEnsures()
                .substitute(exemplar, paramExp);
        // result.add(init);
      }
    }
  }
  @Override
  public void exitTypeRepresentationDecl(ResolveParser.TypeRepresentationDeclContext ctx) {
    PExp constraint = g.getTrueExp();
    PExp correspondence = g.getTrueExp();
    if (currentTypeReprSym == null) return;
    correspondence = currentTypeReprSym.getCorrespondence();

    if (currentTypeReprSym.getDefinition() != null) {
      constraint = currentTypeReprSym.getDefinition().getProgramType().getConstraint();
    }
    VCAssertiveBlockBuilder block = assertiveBlocks.pop();
    PExp newConstraint =
        constraint.substitute(
            currentTypeReprSym.exemplarAsPSymbol(),
            currentTypeReprSym.conceptualExemplarAsPSymbol());
    newConstraint =
        newConstraint.withVCInfo(ctx.getStart(), "Constraint for type: " + ctx.name.getText());
    block.assume(correspondence.splitIntoConjuncts());
    // throw new UnsupportedOperationException("re-institute the final confirm for this dan");
    block.finalConfirm(newConstraint);
    outputFile.addAssertiveBlock(block.build());
  }