Examples with LatchedStatement com.rockwellcollins.atc.agree.agree.LatchedStatement used on opensource projects

Example 1 with LatchedStatement

use of com.rockwellcollins.atc.agree.agree.LatchedStatement in project AGREE by loonwerks.

the class AgreeValidator method checkLatchedExpr.

@Check(CheckType.FAST)
public void checkLatchedExpr(LatchedExpr latched) {
    // get container
    EObject container = latched.eContainer();
    AgreeContract contract = null;
    while (!(container instanceof ComponentClassifier)) {
        if (container instanceof AgreeContract) {
            contract = (AgreeContract) container;
        }
        container = container.eContainer();
    }
    if (container instanceof ComponentImplementation) {
        boolean foundLatchedStatement = false;
        for (SpecStatement spec : contract.getSpecs()) {
            if (spec instanceof LatchedStatement) {
                foundLatchedStatement = true;
                break;
            }
        }
        if (!foundLatchedStatement) {
            error(latched, "Latched expressions can appear only in component implementations " + "that contain a latched synchrony statement");
        }
    } else {
        error(latched, "Latched expressions can appear only in component implementations");
    }
    Expr expr = latched.getExpr();
    Expr nestId = null;
    if (expr instanceof NamedElmExpr) {
        nestId = expr;
    } else if (expr instanceof EventExpr) {
        EventExpr eventExpr = (EventExpr) expr;
        nestId = eventExpr.getPort();
    }
    if (nestId != null) {
        NamedElement namedEl = null;
        if (nestId instanceof NamedElmExpr) {
            namedEl = ((NamedElmExpr) nestId).getElm();
        } else if (nestId instanceof SelectionExpr) {
            namedEl = ((SelectionExpr) nestId).getField();
        }
        if ((namedEl instanceof DataPort) && ((DataPort) namedEl).isIn()) {
            return;
        } else if ((namedEl instanceof EventDataPort) && ((EventDataPort) namedEl).isIn()) {
            return;
        } else {
            // check to see if it is an "agree_input"
            EObject namedElContainer = namedEl.eContainer();
            if (namedElContainer instanceof InputStatement) {
                return;
            }
        }
    }
    error(latched, "Latched expressions are valid only for input data ports or event expressions over input event data ports");
}

Example 2 with LatchedStatement

use of com.rockwellcollins.atc.agree.agree.LatchedStatement in project AGREE by loonwerks.

the class AgreeASTBuilder method getAgreeNode.

private AgreeNode getAgreeNode(ComponentInstance compInst, boolean isTop) {
    List<AgreeVar> inputs = new ArrayList<>();
    List<AgreeVar> outputs = new ArrayList<>();
    List<AgreeVar> locals = new ArrayList<>();
    List<AgreeAADLConnection> aadlConnections = new ArrayList<>();
    List<AgreeOverriddenConnection> userDefinedConections = new ArrayList<>();
    List<AgreeConnection> connections = new ArrayList<>();
    List<AgreeNode> subNodes = new ArrayList<>();
    List<AgreeStatement> assertions = new ArrayList<>();
    List<AgreeStatement> assumptions = new ArrayList<>();
    List<AgreeStatement> guarantees = new ArrayList<>();
    List<AgreeStatement> lemmas = new ArrayList<>();
    List<AgreeEquation> localEquations = new ArrayList<>();
    List<AgreeStatement> patternProps = Collections.emptyList();
    timeOfVarMap = new HashMap<>();
    timeRiseVarMap = new HashMap<>();
    timeFallVarMap = new HashMap<>();
    unspecifiedAadlProperties = new HashMap<>();
    Expr clockConstraint = new BoolExpr(true);
    Expr initialConstraint = new BoolExpr(true);
    String id = compInst.getName();
    AgreeVar clockVar = new AgreeVar(id + clockIDSuffix, NamedType.BOOL, compInst.getSubcomponent(), compInst, null);
    EObject reference = isTop ? compInst.getComponentClassifier() : compInst.getSubcomponent();
    TimingModel timing = null;
    boolean foundSubNode = false;
    boolean hasDirectAnnex = false;
    boolean hasSubcomponents = false;
    ComponentClassifier compClass = compInst.getComponentClassifier();
    Set<ComponentType> effectiveTypes = new HashSet<>();
    Map<String, jkind.lustre.Expr> portRewriteMap = new HashMap<>();
    if (compClass instanceof ComponentImplementation) {
        boolean latched = false;
        ComponentImplementation cc = (ComponentImplementation) compClass;
        effectiveTypes.addAll(getEffectiveComponentTypes(cc.getType()));
        if (isTop || isMonolithic) {
            while (cc != null) {
                AgreeContractSubclause annex = getAgreeAnnex(cc);
                for (ComponentInstance subInst : compInst.getComponentInstances()) {
                    hasSubcomponents = true;
                    curInst = subInst;
                    AgreeNode subNode = getAgreeNode(subInst, false);
                    if (subNode != null && subNodes.stream().noneMatch(it -> it.reference.equals(subNode.reference))) {
                        foundSubNode = true;
                        subNodes.add(subNode);
                    }
                }
                if (annex != null) {
                    hasDirectAnnex = true;
                    AgreeContract contract = (AgreeContract) annex.getContract();
                    curInst = compInst;
                    assertions.addAll(getAssertionStatements(contract.getSpecs()));
                    getEquationStatements(contract.getSpecs(), portRewriteMap).addAllTo(locals, assertions, guarantees);
                    assertions.addAll(getPropertyStatements(contract.getSpecs()));
                    assertions.addAll(getAssignmentStatements(contract.getSpecs()));
                    userDefinedConections.addAll(getConnectionStatements(contract.getSpecs()));
                    lemmas.addAll(getLemmaStatements(contract.getSpecs()));
                    lemmas.addAll(getReachableStatements(contract.getSpecs(), portRewriteMap));
                    addLustreNodes(contract.getSpecs());
                    gatherLustreTypes(contract.getSpecs());
                    // the clock constraints contain other nodes that we add
                    clockConstraint = getClockConstraint(contract.getSpecs(), subNodes);
                    timing = getTimingModel(contract.getSpecs());
                    outputs.addAll(getEquationVars(contract.getSpecs(), compInst));
                    for (SpecStatement spec : contract.getSpecs()) {
                        if (spec instanceof LatchedStatement) {
                            latched = true;
                            break;
                        }
                    }
                }
                // Find extended effective types
                effectiveTypes.addAll(getEffectiveComponentTypes(cc.getType()));
                cc = cc.getExtended();
            }
            EList<ConnectionInstance> connectionInstances = compInst.getAllEnclosingConnectionInstances();
            List<ConnectionInstance> foo = new ArrayList<>();
            compInst.getAllComponentInstances().forEach(ci -> ci.allEnclosingConnectionInstances().forEach(foo::add));
            aadlConnections.addAll(getConnectionsFromInstances(connectionInstances, compInst, subNodes, latched));
            connections.addAll(filterConnections(aadlConnections, userDefinedConections));
        }
        ComponentType compType = ((ComponentImplementation) compClass).getType();
        AgreeContractSubclause compImpAnnex = getAgreeAnnex(compClass);
        if (compImpAnnex != null) {
            AgreeContract contract = (AgreeContract) compImpAnnex.getContract();
            for (SpecStatement spec : contract.getSpecs()) {
                if (spec instanceof LiftContractStatement) {
                    Subcomponent sub = ((ComponentImplementation) compClass).getOwnedSubcomponents().get(0);
                    ComponentType ct = sub.getComponentType();
                    for (Connection conn : ((ComponentImplementation) compClass).getAllConnections()) {
                        NamedElement sourceNe = conn.getSource().getConnectionEnd();
                        NamedElement destNe = conn.getDestination().getConnectionEnd();
                        String sourceStr = sourceNe.getName().replace("::", "__");
                        String destStr = destNe.getName().replace("::", "__");
                        if (ct == sourceNe.getContainingClassifier()) {
                            portRewriteMap.put(sourceStr, new IdExpr(destStr));
                        } else if (ct == destNe.getContainingClassifier()) {
                            portRewriteMap.put(destStr, new IdExpr(sourceStr));
                        }
                    }
                    effectiveTypes.addAll(getEffectiveComponentTypes(ct));
                }
            }
        }
        // make compClass the type so we can get it's other contract elements
        compClass = compType;
    } else if (compClass instanceof ComponentType) {
        effectiveTypes.addAll(getEffectiveComponentTypes((ComponentType) compClass));
    } else {
        throw new AgreeException("Internal error: attempt to run AGREE analysis on instance " + compInst.getFullName() + " not instance of ComponentImplementation or ComponentType.");
    }
    curInst = compInst;
    if (timing == null) {
        timing = TimingModel.SYNC;
    }
    for (ComponentType compType : effectiveTypes) {
        AgreeContractSubclause annex = getAgreeAnnex(compType);
        if (annex != null) {
            hasDirectAnnex = true;
            AgreeContract contract = (AgreeContract) annex.getContract();
            // this makes files for monolithic verification a bit smaller
            if (!isMonolithic || isTop || !hasSubcomponents) {
                assumptions.addAll(getAssumptionStatements(contract.getSpecs(), portRewriteMap));
                guarantees.addAll(getGuaranteeStatements(contract.getSpecs(), portRewriteMap));
                lemmas.addAll(getReachableStatements(contract.getSpecs(), portRewriteMap));
            }
            // Count eq statements with expressions as assertions
            getEquationStatements(contract.getSpecs(), portRewriteMap).addAllTo(locals, assertions, guarantees);
            assertions.addAll(getPropertyStatements(contract.getSpecs()));
            outputs.addAll(getEquationVars(contract.getSpecs(), compInst));
            getAgreeInputVars(contract.getSpecs(), compInst).addAllTo(inputs, assumptions, guarantees);
            initialConstraint = getInitialConstraint(contract.getSpecs());
            addLustreNodes(contract.getSpecs());
            gatherLustreTypes(contract.getSpecs());
        }
    }
    gatherUnspecifiedAadlProperties(unspecifiedAadlProperties, inputs, assumptions, guarantees);
    if (!(foundSubNode || hasDirectAnnex)) {
        return null;
    }
    gatherOutputsInputsAndTypes(outputs, inputs, compInst.getFeatureInstances(), assumptions, guarantees);
    AgreeNodeBuilder builder = new AgreeNodeBuilder(id);
    builder.addInput(inputs);
    builder.addOutput(outputs);
    builder.addLocal(locals);
    builder.addLocalEquation(localEquations);
    builder.addConnection(connections);
    builder.addSubNode(subNodes);
    // Clean up any vacuous true predicates
    Predicate<AgreeStatement> isBoolExprAndisTrue = st -> (st.expr instanceof BoolExpr) && ((BoolExpr) st.expr).value;
    assertions.removeIf(isBoolExprAndisTrue);
    assumptions.removeIf(isBoolExprAndisTrue);
    guarantees.removeIf(isBoolExprAndisTrue);
    builder.addAssertion(assertions);
    builder.addAssumption(assumptions);
    builder.addGuarantee(guarantees);
    builder.addLemma(lemmas);
    builder.addPatternProp(patternProps);
    builder.setClockConstraint(clockConstraint);
    builder.setInitialConstraint(initialConstraint);
    builder.setClockVar(clockVar);
    builder.setReference(reference);
    builder.setTiming(timing);
    builder.setCompInst(compInst);
    builder.addTimeOf(timeOfVarMap);
    builder.addTimeRise(timeRiseVarMap);
    builder.addTimeFall(timeFallVarMap);
    AgreeNode result = builder.build();
    renamings.put(id, compInst.getName());
    refMap.put(id, compInst);
    return linearizationRewriter.visit(result);
}

Example 3 with LatchedStatement

use of com.rockwellcollins.atc.agree.agree.LatchedStatement in project AGREE by loonwerks.

the class AgreeValidator method checkSynchStatement.

@Check(CheckType.FAST)
public void checkSynchStatement(SynchStatement sync) {
    Classifier container = sync.getContainingClassifier();
    if (!(container instanceof ComponentImplementation)) {
        error(sync, "Synchrony statements can appear only in component implementations");
    }
    if (sync instanceof CalenStatement || sync instanceof MNSynchStatement || sync instanceof AsynchStatement || sync instanceof LatchedStatement) {
        return;
    }
    // So this may be redundant
    if (Integer.valueOf(sync.getVal()) < 0) {
        error(sync, "The value of synchrony statments must be positive");
    }
    String val2 = sync.getVal2();
    if (val2 != null) {
        if (Integer.valueOf(val2) <= 0) {
            error(sync, "The second value of a synchrony statment must be greater than zero");
        }
        if (Integer.valueOf(sync.getVal()) <= Integer.valueOf(val2)) {
            error(sync, "The second value of a synchrony argument must be less than the first");
        }
    }
}