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Example 1 with AssignStatement

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

the class AgreeASTBuilder method getAssignmentStatements.

private List<AgreeStatement> getAssignmentStatements(EList<SpecStatement> specs) {
    List<AgreeStatement> assigns = new ArrayList<>();
    for (SpecStatement spec : specs) {
        if (spec instanceof AssignStatement) {
            Expr expr = doSwitch(((AssignStatement) spec).getExpr());
            NamedElement id = ((AssignStatement) spec).getId();
            expr = new BinaryExpr(new IdExpr(id.getName()), BinaryOp.EQUAL, expr);
            assigns.add(new AgreeStatement("", expr, spec));
        }
    }
    return assigns;
}
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Example 2 with AssignStatement

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

the class AgreeValidator method checkAssign.

@Check(CheckType.FAST)
public void checkAssign(AssignStatement assign) {
    if (!(assign.getId() instanceof NamedElement)) {
        error(assign.getId(), "The Id on the left hand side of an assignment statement " + "must not contain a \".\"");
        return;
    }
    NamedElement namedEl = assign.getId();
    Expr expr = assign.getExpr();
    if (namedEl == null || expr == null) {
        return;
    }
    ComponentImplementation compImpl = EcoreUtil2.getContainerOfType(assign, ComponentImplementation.class);
    if (compImpl == null) {
        error(assign, "Assignment statements are allowed only in component implementations");
        return;
    }
    if (namedEl.eContainer() instanceof InputStatement) {
        error(assign, "Assignment to agree_input variables is illegal.");
        return;
    }
    if (compImpl != null) {
        List<EObject> assignableElements = new ArrayList<>();
        List<AgreeContract> implContracts = EcoreUtil2.getAllContentsOfType(compImpl, AgreeContract.class);
        for (AgreeContract ac : implContracts) {
            assignableElements.addAll(EcoreUtil2.getAllContentsOfType(ac, EqStatement.class).stream().map(eq -> eq.getLhs()).flatMap(List::stream).collect(Collectors.toList()));
        }
        ComponentType compType = compImpl.getType();
        if (compType != null) {
            List<AgreeContract> typeContracts = EcoreUtil2.getAllContentsOfType(compType, AgreeContract.class);
            for (AgreeContract ac : typeContracts) {
                assignableElements.addAll(EcoreUtil2.getAllContentsOfType(ac, EqStatement.class).stream().map(eq -> eq.getLhs()).flatMap(List::stream).collect(Collectors.toList()));
            }
        }
        assignableElements.addAll(compImpl.getAllFeatures().stream().map(cf -> flattenFeatureGroups(Collections.singletonList(cf))).flatMap(List::stream).filter(feat -> feat instanceof EventDataPort || feat instanceof DataPort).filter(feat -> DirectionType.OUT.equals(((Port) feat).getDirection())).collect(Collectors.toList()));
        if (!assignableElements.contains(namedEl)) {
            error("LHS of assignment must be an AGREE 'eq' variable or an output port of this component", assign, AgreePackage.Literals.ASSIGN_STATEMENT__ID);
        }
    }
    TypeDef lhsType = (AgreeTypeSystem.inferFromNamedElement(namedEl));
    TypeDef rhsType = (AgreeTypeSystem.infer(expr));
    if (!AgreeTypeSystem.typesEqual(lhsType, rhsType)) {
        error(assign, "The left hand side of the assignment statement is of type '" + nameOfTypeDef(lhsType) + "' but the right hand side is of type '" + nameOfTypeDef(rhsType) + "'");
    }
    for (EObject container : EcoreUtil2.getAllContainers(assign)) {
        if (container instanceof Classifier) {
            for (AnnexSubclause annexSubclause : AnnexUtil.getAllAnnexSubclauses((Classifier) container, AgreePackage.eINSTANCE.getAgreeContractSubclause())) {
                for (AgreeContract contract : EcoreUtil2.getAllContentsOfType(annexSubclause, AgreeContract.class)) {
                    if (contract != null) {
                        for (SpecStatement spec : contract.getSpecs()) {
                            if (spec instanceof AssignStatement && spec != assign) {
                                NamedElement otherEl = ((AssignStatement) spec).getId();
                                if (otherEl.equals(namedEl)) {
                                    error(spec, "Mulitiple assignments to variable '" + namedEl.getName() + "'");
                                    error(assign, "Mulitiple assignments to variable '" + namedEl.getName() + "'");
                                }
                            } else if (spec instanceof EqStatement) {
                                EqStatement eqStmt = (EqStatement) spec;
                                for (NamedElement otherEl : eqStmt.getLhs()) {
                                    if (eqStmt.getExpr() != null && otherEl.equals(namedEl)) {
                                        error(spec, "Mulitiple assignments to variable '" + namedEl.getName() + "'");
                                        error(assign, "Mulitiple assignments to variable '" + namedEl.getName() + "'");
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}
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Aggregations

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