Examples with Expression verdict.vdm.vdm_lustre.Expression used on opensource projects

Example 11 with Expression

use of verdict.vdm.vdm_lustre.Expression in project VERDICT by ge-high-assurance.

the class Agree2Vdm method translateEqStatement.

// method to map agree statements of the type EqStatement
// that have the form: 'eq' Arg (',' Arg)* '=' Expr ';'
// and create corresponding "SymbolDefinition" for the "ContractSpec" in the vdm model
private SymbolDefinition translateEqStatement(EqStatement eqStmt, Model model, HashSet<String> dataTypeDecl, HashSet<String> nodeDecl) {
    SymbolDefinition symbDef = new verdict.vdm.vdm_lustre.SymbolDefinition();
    // get the right side/expression
    Expr agreeExpr = eqStmt.getExpr();
    Expression vdmExpression = getVdmExpressionFromAgreeExpression(agreeExpr, dataTypeDecl, nodeDecl, model);
    // get left side of the equation
    EList<Arg> lhsArgs = eqStmt.getLhs();
    for (Arg lhsArg : lhsArgs) {
        // left side has the variable names along with their types
        // set the id
        symbDef.setName(lhsArg.getName());
        symbDef.setDataType(getVdmTypeFromAgreeType(lhsArg.getType(), dataTypeDecl, model));
        // set the expression as the value/definition for each variable on the left
        symbDef.setDefinition(vdmExpression);
    }
    return symbDef;
}

Example 12 with Expression

use of verdict.vdm.vdm_lustre.Expression in project VERDICT by ge-high-assurance.

the class Agree2Vdm method translateGuaranteeStatement.

private ContractItem translateGuaranteeStatement(GuaranteeStatement guaranteeStmt, HashSet<String> dataTypeDecl, HashSet<String> nodeDecl, Model model) {
    ContractItem contractItem = new ContractItem();
    contractItem.setName(guaranteeStmt.getStr());
    Expr agreeExpr = guaranteeStmt.getExpr();
    Expression vdmlustrExpr = getVdmExpressionFromAgreeExpression(agreeExpr, dataTypeDecl, nodeDecl, model);
    contractItem.setExpression(vdmlustrExpr);
    return contractItem;
}

Example 13 with Expression

use of verdict.vdm.vdm_lustre.Expression in project VERDICT by ge-high-assurance.

the class Agree2Vdm method getVdmExpressionFromAgreeExpression.

// method to translate expression in Agree to expression in vdm
private Expression getVdmExpressionFromAgreeExpression(Expr agreeExpr, HashSet<String> dataTypeDecl, HashSet<String> nodeDecl, Model model) {
    Expression vdmExpr = new Expression();
    if (agreeExpr instanceof IfThenElseExpr) {
        IfThenElseExpr ifexpr = (IfThenElseExpr) agreeExpr;
        // for vdm model
        IfThenElse ifThenElseVal = new IfThenElse();
        Expression condExpr = getVdmExpressionFromAgreeExpression(ifexpr.getA(), dataTypeDecl, nodeDecl, model);
        ifThenElseVal.setCondition(condExpr);
        Expression thenBranchExpr = getVdmExpressionFromAgreeExpression(ifexpr.getB(), dataTypeDecl, nodeDecl, model);
        ifThenElseVal.setThenBranch(thenBranchExpr);
        Expression elseBranchExpr = getVdmExpressionFromAgreeExpression(ifexpr.getC(), dataTypeDecl, nodeDecl, model);
        ifThenElseVal.setElseBranch(elseBranchExpr);
        vdmExpr.setConditionalExpression(ifThenElseVal);
    } else if (agreeExpr instanceof CallExpr) {
        CallExpr callExpr = (CallExpr) agreeExpr;
        DoubleDotRef ddref = (DoubleDotRef) callExpr.getRef();
        if (ddref.getElm() instanceof NodeDef) {
            NodeDef nodeDef = (NodeDef) ddref.getElm();
            addNodeDefToTypeDeclarations(nodeDef, dataTypeDecl, nodeDecl, model);
            // create node call in vdm model
            NodeCall vdmNodeCall = new NodeCall();
            // setting node name
            vdmNodeCall.setNodeId(nodeDef.getName());
            EList<Expr> callExprArgs = callExpr.getArgs();
            // below are the parameters passed to the function call
            for (Expr callExprArg : callExprArgs) {
                Expression argExpr = getVdmExpressionFromAgreeExpression(callExprArg, dataTypeDecl, nodeDecl, model);
                // setting node arguments
                vdmNodeCall.getArgument().add(argExpr);
            }
            vdmExpr.setCall(vdmNodeCall);
        } else {
            System.out.println("Unmapped Typed");
        }
    } else if (agreeExpr instanceof NamedElmExpr) {
        NamedElmExpr nmExpr = (NamedElmExpr) agreeExpr;
        vdmExpr.setIdentifier(nmExpr.getElm().getName());
        // define corresponding types in the VDM if not already defined
        if (nmExpr.getElm() instanceof Arg) {
            Arg nmElmArg = (Arg) nmExpr.getElm();
            // define corresponding type in the VDM if not already defined
            Type argType = nmElmArg.getType();
            defineDataTypeDataImplementationTypeInVDM(argType, dataTypeDecl, model);
        } else if (nmExpr.getElm() instanceof Port) {
            Port nmElmPort = (Port) nmExpr.getElm();
            // define corresponding type in the VDM if not already defined
            if (nmElmPort instanceof DataPortImpl) {
                DataPort nmElmDataPort = (DataPort) nmElmPort;
                DataSubcomponentType dSubCompType = nmElmDataPort.getDataFeatureClassifier();
                defineDataTypeDataImplementationTypeInVDM(dSubCompType, dataTypeDecl, model);
            } else if (nmElmPort instanceof EventDataPortImpl) {
                EventDataPort nmElmDataPort = (EventDataPort) nmElmPort;
                DataSubcomponentType dSubCompType = nmElmDataPort.getDataFeatureClassifier();
                defineDataTypeDataImplementationTypeInVDM(dSubCompType, dataTypeDecl, model);
            } else {
                if (!(nmElmPort instanceof EventPort)) {
                    System.out.println("Unresolved Port Type");
                }
            }
        } else if (nmExpr.getElm() instanceof ConstStatement) {
            ConstStatement nmElmConstStatement = (ConstStatement) nmExpr.getElm();
            String nmElmConstStatementName = nmElmConstStatement.getName();
            // add const declaration to VDM if not already defined
            if (!dataTypeDecl.contains(nmElmConstStatementName)) {
                dataTypeDecl.add(nmElmConstStatementName);
                ConstantDeclaration vdmConstDeclaration = new ConstantDeclaration();
                vdmConstDeclaration.setName(nmElmConstStatementName);
                vdmConstDeclaration.setDefinition(getVdmExpressionFromAgreeExpression(nmElmConstStatement.getExpr(), dataTypeDecl, nodeDecl, model));
                vdmConstDeclaration.setDataType(getVdmTypeFromAgreeType(nmElmConstStatement.getType(), dataTypeDecl, model));
                LustreProgram lustreProgram = model.getDataflowCode();
                lustreProgram.getConstantDeclaration().add(vdmConstDeclaration);
                model.setDataflowCode(lustreProgram);
            }
        } else {
            System.out.println("Unresolved/unmapped NamedExprElm: " + nmExpr.getElm().getName());
        }
    } else if (agreeExpr instanceof SelectionExpr) {
        // selection expression corresponds to record projection in VDM
        RecordProjection vdmRecordProj = new RecordProjection();
        SelectionExpr selExpr = (SelectionExpr) agreeExpr;
        if (selExpr.getField() == null) {
            System.out.println("Null Selection Expr field: " + selExpr.getField());
        } else {
            NamedElement field = selExpr.getField();
            // set record-projection's reference
            if (selExpr.getTarget() != null) {
                // target can be NamedElmExpr or a SelectionExpr
                vdmRecordProj.setRecordReference(getVdmExpressionFromAgreeExpression(selExpr.getTarget(), dataTypeDecl, nodeDecl, model));
            }
            // set record-projection's field id
            vdmRecordProj.setFieldId(field.getName());
            // also set the name of the field's type as the record-projection's record-type
            if (field instanceof DataPortImpl) {
                DataPort dport = (DataPort) field;
                DataSubcomponentType dSubCompType = dport.getDataFeatureClassifier();
                defineDataTypeDataImplementationTypeInVDM(dSubCompType, dataTypeDecl, model);
                vdmRecordProj.setRecordType(dSubCompType.getName());
            } else if (field instanceof DataSubcomponentImpl) {
                DataSubcomponent dSubComp = (DataSubcomponent) field;
                DataSubcomponentType dSubCompType = dSubComp.getDataSubcomponentType();
                defineDataTypeDataImplementationTypeInVDM(dSubCompType, dataTypeDecl, model);
                vdmRecordProj.setRecordType(dSubCompType.getName());
            } else if (field instanceof ArgImpl) {
                Arg arg = (Arg) field;
                Type argType = arg.getType();
                defineDataTypeDataImplementationTypeInVDM(argType, dataTypeDecl, model);
                if (argType instanceof PrimType) {
                    vdmRecordProj.setRecordType(getDataTypeName(argType));
                } else {
                    System.out.println("Unresolved Arg Type so not setting record-type in record-projection.");
                }
            } else {
                System.out.println("Unresolved type of field.");
            }
        }
        vdmExpr.setRecordProjection(vdmRecordProj);
    } else if (agreeExpr instanceof BinaryExpr) {
        BinaryExpr binExpr = (BinaryExpr) agreeExpr;
        // for vdm
        BinaryOperation binoper = new BinaryOperation();
        // set left operand
        Expression leftOperand = getVdmExpressionFromAgreeExpression(binExpr.getLeft(), dataTypeDecl, nodeDecl, model);
        binoper.setLhsOperand(leftOperand);
        // set right operand
        Expression rightOperand = getVdmExpressionFromAgreeExpression(binExpr.getRight(), dataTypeDecl, nodeDecl, model);
        binoper.setRhsOperand(rightOperand);
        // set appropriate operator
        String operator = binExpr.getOp();
        if (operator.equalsIgnoreCase("->")) {
            vdmExpr.setArrow(binoper);
        } else if (operator.equalsIgnoreCase("=>")) {
            vdmExpr.setImplies(binoper);
        } else if (operator.equalsIgnoreCase("and")) {
            vdmExpr.setAnd(binoper);
        } else if (operator.equalsIgnoreCase("or")) {
            vdmExpr.setOr(binoper);
        } else if (operator.equalsIgnoreCase("=")) {
            vdmExpr.setEqual(binoper);
        } else if (operator.equalsIgnoreCase(">")) {
            vdmExpr.setGreaterThan(binoper);
        } else if (operator.equalsIgnoreCase("<")) {
            vdmExpr.setLessThan(binoper);
        } else if (operator.equalsIgnoreCase(">=")) {
            vdmExpr.setGreaterThanOrEqualTo(binoper);
        } else if (operator.equalsIgnoreCase("<=")) {
            vdmExpr.setLessThanOrEqualTo(binoper);
        } else if (operator.equalsIgnoreCase("+")) {
            vdmExpr.setPlus(binoper);
        } else if (operator.equalsIgnoreCase("-")) {
            vdmExpr.setMinus(binoper);
        } else if (operator.equalsIgnoreCase("!=") || operator.equalsIgnoreCase("<>")) {
            vdmExpr.setNotEqual(binoper);
        } else if (operator.equalsIgnoreCase("/")) {
            vdmExpr.setDiv(binoper);
        } else if (operator.equalsIgnoreCase("*")) {
            vdmExpr.setTimes(binoper);
        } else {
            System.out.println("Unmapped binary operator: " + operator);
        }
    } else if (agreeExpr instanceof UnaryExpr) {
        UnaryExpr unExpr = (UnaryExpr) agreeExpr;
        Expression singleOperand = getVdmExpressionFromAgreeExpression(unExpr.getExpr(), dataTypeDecl, nodeDecl, model);
        String operator = unExpr.getOp();
        if (operator.equalsIgnoreCase("this")) {
            vdmExpr.setCurrent(singleOperand);
        } else if (operator.equalsIgnoreCase("not")) {
            vdmExpr.setNot(singleOperand);
        } else if (operator.equalsIgnoreCase("-")) {
            vdmExpr.setNegative(singleOperand);
        } else {
            System.out.println("Unmapped unary operator.");
        }
    } else if (agreeExpr instanceof BoolLitExpr) {
        BoolLitExpr boolExpr = (BoolLitExpr) agreeExpr;
        vdmExpr.setBoolLiteral(boolExpr.getVal().getValue());
    } else if (agreeExpr instanceof EnumLitExpr) {
        EnumLitExpr enumExpr = (EnumLitExpr) agreeExpr;
        // check if elm is DataImplementationImpl or DataTypeImpl -- if yes add definition to type declarations if not already present
        DoubleDotRef enumType = enumExpr.getEnumType();
        if (enumType.getElm() instanceof DataTypeImpl) {
            org.osate.aadl2.DataType aadlDType = (org.osate.aadl2.DataType) enumType.getElm();
            resolveAADLDataType(aadlDType, dataTypeDecl, model);
        } else {
            System.out.println("Unexpected Elm type for EnumLitExpr");
        }
        vdmExpr.setIdentifier(enumExpr.getValue());
    } else if (agreeExpr instanceof PreExpr) {
        PreExpr preExpr = (PreExpr) agreeExpr;
        Expression expr = getVdmExpressionFromAgreeExpression(preExpr.getExpr(), dataTypeDecl, nodeDecl, model);
        vdmExpr.setPre(expr);
    } else if (agreeExpr instanceof RecordLitExpr) {
        RecordLiteral vdmRecordLiteral = new RecordLiteral();
        RecordLitExpr recLitExpr = (RecordLitExpr) agreeExpr;
        if (recLitExpr.getRecordType() instanceof DoubleDotRef) {
            DoubleDotRef recType = (DoubleDotRef) recLitExpr.getRecordType();
            if (recType.getElm().getName() != null) {
                // check if elm is DataImplementationImpl -- if yes add definition to type declarations if not already present
                if (recType.getElm() instanceof DataImplementation) {
                    org.osate.aadl2.DataImplementation aadlDImpl = (org.osate.aadl2.DataImplementation) recType.getElm();
                    resolveAADLDataImplementationType(aadlDImpl, dataTypeDecl, model);
                } else {
                    System.out.println("Unexpected Elm type for EnumLitExpr");
                }
                // set name of the record literal in the vdm model
                vdmRecordLiteral.setRecordType(recType.getElm().getName());
                // get args and arg-expr and set them as field identifier and value in the vdm model
                EList<NamedElement> recLitArgs = recLitExpr.getArgs();
                EList<Expr> recLitArgsExpr = recLitExpr.getArgExpr();
                // below are the values set to variable
                for (int ind = 0; ind < recLitArgs.size(); ind++) {
                    FieldDefinition fieldDef = new FieldDefinition();
                    fieldDef.setFieldIdentifier(recLitArgs.get(ind).getName());
                    fieldDef.setFieldValue(getVdmExpressionFromAgreeExpression(recLitArgsExpr.get(ind), dataTypeDecl, nodeDecl, model));
                    // set field definitions in the record literal in the vdm model
                    vdmRecordLiteral.getFieldDefinition().add(fieldDef);
                }
                vdmExpr.setRecordLiteral(vdmRecordLiteral);
            } else {
                System.out.println("Unexpected Literal's Record Type that has null named elm.");
            }
        } else {
            System.out.println("Unresolved or unmapped record literal expression.");
        }
    } else if (agreeExpr instanceof IntLitExpr) {
        IntLitExpr intLitExpr = (IntLitExpr) agreeExpr;
        BigInteger bigInt = new BigInteger(intLitExpr.getVal());
        vdmExpr.setIntLiteral(bigInt);
    } else if (agreeExpr instanceof RealLitExpr) {
        RealLitExpr realLitExpr = (RealLitExpr) agreeExpr;
        BigDecimal bigDecimal = new BigDecimal(realLitExpr.getVal());
        vdmExpr.setRealLiteral(bigDecimal);
    } else if (agreeExpr instanceof EventExpr) {
        EventExpr eventExpr = (EventExpr) agreeExpr;
        if (eventExpr.getPort() != null) {
            vdmExpr.setEvent(getVdmExpressionFromAgreeExpression(eventExpr.getPort(), dataTypeDecl, nodeDecl, model));
        } else {
            System.out.println("EventExpr does not have port infornation.");
        }
    } else if (agreeExpr instanceof RealCast) {
        RealCast realCastExpr = (RealCast) agreeExpr;
        vdmExpr.setToReal(getVdmExpressionFromAgreeExpression(realCastExpr.getExpr(), dataTypeDecl, nodeDecl, model));
    } else {
        System.out.println("Unresolved/umapped agree expr" + agreeExpr.toString());
    }
    return vdmExpr;
}

Example 14 with Expression

use of verdict.vdm.vdm_lustre.Expression in project VERDICT by ge-high-assurance.

the class Agree2Vdm method translateAgreeAnnex.

private Model translateAgreeAnnex(List<SystemType> systemTypes, List<SystemImplementation> systemImpls, Model model, HashSet<String> dataTypeDecl, HashSet<String> nodeDecl) {
    LustreProgram lustreProgram = new LustreProgram();
    // Initializing the lustre program in the VDM
    model.setDataflowCode(lustreProgram);
    // System.out.println("Processing "+systemTypes.size()+" SystemTypes for agree annexes");
    for (SystemType sysType : systemTypes) {
        // unpacking sysType
        for (AnnexSubclause annex : sysType.getOwnedAnnexSubclauses()) {
            if (annex.getName().equalsIgnoreCase("agree")) {
                // annex is of type DefaultAnnexSubclause
                DefaultAnnexSubclause ddASC = (DefaultAnnexSubclause) annex;
                // AnnexSubclause aSC = ddASC.getParsedAnnexSubclause();
                AgreeContractSubclause agreeAnnex = (AgreeContractSubclause) ddASC.getParsedAnnexSubclause();
                // populating agree contracts in the vdm component type -- SHOULD ADD THIS CODE TO AADL2VDM
                verdict.vdm.vdm_lustre.ContractSpec contractSpec = new verdict.vdm.vdm_lustre.ContractSpec();
                EList<EObject> annexContents = agreeAnnex.eContents();
                if (annexContents.isEmpty()) {
                    System.out.println("Empty Agree Annex.");
                }
                for (EObject clause : annexContents) {
                    // mapping to AgreeContractclause
                    AgreeContract agreeContract = (AgreeContract) clause;
                    // getting specStatements
                    EList<SpecStatement> specStatements = agreeContract.getSpecs();
                    for (SpecStatement specStatement : specStatements) {
                        if (specStatement instanceof EqStatement) {
                            EqStatement eqStmt = (EqStatement) specStatement;
                            // translate EqStatement in Agree to SymbolDefinition in vdm
                            SymbolDefinition symbDef = translateEqStatement(eqStmt, model, dataTypeDecl, nodeDecl);
                            // Add agree variable/symbol definition to the contractSpec in vdm
                            contractSpec.getSymbol().add(symbDef);
                        } else if (specStatement instanceof GuaranteeStatement) {
                            GuaranteeStatement guaranteeStmt = (GuaranteeStatement) specStatement;
                            ContractItem contractItem = translateGuaranteeStatement(guaranteeStmt, dataTypeDecl, nodeDecl, model);
                            contractSpec.getGuarantee().add(contractItem);
                        } else if (specStatement instanceof AssumeStatement) {
                            AssumeStatement assumeStmt = (AssumeStatement) specStatement;
                            ContractItem contractItem = translateAssumeStatement(assumeStmt, dataTypeDecl, nodeDecl, model);
                            contractSpec.getAssume().add(contractItem);
                        } else {
                            if (!(specStatement instanceof ConstStatementImpl)) {
                                System.out.println("Element not recognizable" + clause.eContents().toString());
                            }
                        }
                    }
                }
                if (contractSpec != null) {
                    List<ComponentType> vdmComponentTypes = model.getComponentType();
                    for (ComponentType vdmComponentType : vdmComponentTypes) {
                        // populating agree contract details in the corresponding componentType instance in vdm
                        if (vdmComponentType.getName().equalsIgnoreCase(sysType.getName())) {
                            vdmComponentType.setContract(contractSpec);
                        }
                    }
                // populating agree contract details in the componentType instance in vdm
                // packComponent.setContract(contractSpec);
                }
            }
        }
    // End of unpacking sysType
    }
    for (SystemImplementation sysImpl : systemImpls) {
        // unpacking sysType
        for (AnnexSubclause annex : sysImpl.getOwnedAnnexSubclauses()) {
            if (annex.getName().equalsIgnoreCase("agree")) {
                // annex is of type DefaultAnnexSubclause
                DefaultAnnexSubclause ddASC = (DefaultAnnexSubclause) annex;
                // AnnexSubclause aSC = ddASC.getParsedAnnexSubclause();
                AgreeContractSubclause agreeAnnex = (AgreeContractSubclause) ddASC.getParsedAnnexSubclause();
                // populating agree contracts in the vdm node body for component implementation type
                verdict.vdm.vdm_lustre.NodeBody nodeBody = new verdict.vdm.vdm_lustre.NodeBody();
                ;
                EList<EObject> annexContents = agreeAnnex.eContents();
                if (annexContents.isEmpty()) {
                    System.out.println("Empty Agree Annex.");
                }
                for (EObject clause : annexContents) {
                    // mapping to AgreeContractclause
                    AgreeContract agreeContract = (AgreeContract) clause;
                    // getting specStatements
                    EList<SpecStatement> specStatements = agreeContract.getSpecs();
                    for (SpecStatement specStatement : specStatements) {
                        if (specStatement instanceof ConstStatementImpl) {
                            ConstStatementImpl constStmtImpl = (ConstStatementImpl) specStatement;
                            ConstantDeclaration constDecl = translateConstStatementImpl(constStmtImpl, dataTypeDecl, nodeDecl, model);
                            nodeBody.getConstantDeclaration().add(constDecl);
                        } else if (specStatement instanceof EqStatementImpl) {
                            EqStatementImpl eqStmtImpl = (EqStatementImpl) specStatement;
                            nodeBody = translateEqStatementImpl(eqStmtImpl, dataTypeDecl, nodeDecl, model, nodeBody);
                        } else if (specStatement instanceof AssignStatementImpl) {
                            AssignStatementImpl assignStmtImpl = (AssignStatementImpl) specStatement;
                            NodeEquation nodeEquation = translateAssignStatementImpl(assignStmtImpl, dataTypeDecl, nodeDecl, model);
                            nodeBody.getEquation().add(nodeEquation);
                        } else if (specStatement instanceof AssertStatementImpl) {
                            AssertStatementImpl assertStmtImpl = (AssertStatementImpl) specStatement;
                            Expression assertion = translateAssertStatementImpl(assertStmtImpl, dataTypeDecl, nodeDecl, model);
                            nodeBody.getAssertion().add(assertion);
                        } else {
                            System.out.println("Element not recognizable" + clause.eContents().toString());
                        }
                    }
                }
                List<ComponentImpl> vdmComponentImpls = model.getComponentImpl();
                for (ComponentImpl vdmComponentImpl : vdmComponentImpls) {
                    // populating agree contract details in the corresponding componentImplType instance in vdm
                    if (vdmComponentImpl.getName().equalsIgnoreCase(sysImpl.getName())) {
                        vdmComponentImpl.setDataflowImpl(nodeBody);
                    }
                }
            }
        }
    }
    return model;
}

Example 15 with Expression

use of verdict.vdm.vdm_lustre.Expression in project VERDICT by ge-high-assurance.

the class VerdictLustreListener method exitMergeExpr.

/**
 * Extract a merge expression.
 */
@Override
public void exitMergeExpr(LustreParser.MergeExprContext ctx) {
    MergeOperation mergeOperation = new MergeOperation();
    mergeOperation.setClock(ctx.ID().getText());
    ctx.mergeCase().forEach(m -> {
        MergeCase mergeCase = new MergeCase();
        if (m.identifier() != null) {
            mergeCase.setCase(m.identifier().getText());
        } else {
            mergeCase.setCase(m.BOOL().getText());
        }
        mergeCase.setExpr(m.expr().expression);
        mergeOperation.getMergeCase().add(mergeCase);
    });
    ctx.expression = new Expression();
    ctx.expression.setMerge(mergeOperation);
}