Examples of org.yaml.snakeyaml.error.YAMLException

org.yaml.snakeyaml.error.YAMLException

    private static final String check(String s) {
        if (s == null) {
            throw new NullPointerException("Root type must be provided.");
        }
        if (s.trim().length() == 0) {
            throw new YAMLException("Root type must be provided.");
        }
        return s;
    }

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            String name = node.getTag().getClassName();
            Class<?> cl;
            try {
                cl = getClassForName(name);
            } catch (ClassNotFoundException e) {
                throw new YAMLException("Class not found: " + name);
            }
            typeTags.put(node.getTag(), cl);
            return cl;
        } else {
            return classForTag;

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            if (Properties.class.isAssignableFrom(node.getType())) {
                Properties properties = new Properties();
                if (!node.isTwoStepsConstruction()) {
                    constructMapping2ndStep(mnode, properties);
                } else {
                    throw new YAMLException("Properties must not be recursive.");
                }
                return properties;
            } else if (SortedMap.class.isAssignableFrom(node.getType())) {
                SortedMap<Object, Object> map = new TreeMap<Object, Object>();
                if (!node.isTwoStepsConstruction()) {

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                 */
                java.lang.reflect.Constructor<?> c = node.getType().getDeclaredConstructor();
                c.setAccessible(true);
                return c.newInstance();
            } catch (Exception e) {
                throw new YAMLException(e);
            }
        }

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                ScalarNode keyNode;
                if (tuple.getKeyNode() instanceof ScalarNode) {
                    // key must be scalar
                    keyNode = (ScalarNode) tuple.getKeyNode();
                } else {
                    throw new YAMLException("Keys must be scalars but found: " + tuple.getKeyNode());
                }
                Node valueNode = tuple.getValueNode();
                // keys can only be Strings
                keyNode.setType(String.class);
                String key = (String) constructObject(keyNode);
                try {
                    Property property = getProperty(beanType, key);
                    valueNode.setType(property.getType());
                    TypeDescription memberDescription = typeDefinitions.get(beanType);
                    boolean typeDetected = false;
                    if (memberDescription != null) {
                        switch (valueNode.getNodeId()) {
                        case sequence:
                            SequenceNode snode = (SequenceNode) valueNode;
                            Class<? extends Object> memberType = memberDescription
                                    .getListPropertyType(key);
                            if (memberType != null) {
                                snode.setListType(memberType);
                                typeDetected = true;
                            } else if (property.getType().isArray()) {
                                snode.setListType(property.getType().getComponentType());
                                typeDetected = true;
                            }
                            break;
                        case mapping:
                            MappingNode mnode = (MappingNode) valueNode;
                            Class<? extends Object> keyType = memberDescription.getMapKeyType(key);
                            if (keyType != null) {
                                mnode.setTypes(keyType, memberDescription.getMapValueType(key));
                                typeDetected = true;
                            }
                            break;
                        default: // scalar
                        }
                    }
                    if (!typeDetected && valueNode.getNodeId() != NodeId.scalar) {
                        // only if there is no explicit TypeDescription
                        Class<?>[] arguments = property.getActualTypeArguments();
                        if (arguments != null && arguments.length > 0) {
                            // type safe (generic) collection may contain the
                            // proper class
                            if (valueNode.getNodeId() == NodeId.sequence) {
                                Class<?> t = arguments[0];
                                SequenceNode snode = (SequenceNode) valueNode;
                                snode.setListType(t);
                            } else if (valueNode.getTag().equals(Tag.SET)) {
                                Class<?> t = arguments[0];
                                MappingNode mnode = (MappingNode) valueNode;
                                mnode.setOnlyKeyType(t);
                                mnode.setUseClassConstructor(true);
                            } else if (property.getType().isAssignableFrom(Map.class)) {
                                Class<?> ketType = arguments[0];
                                Class<?> valueType = arguments[1];
                                MappingNode mnode = (MappingNode) valueNode;
                                mnode.setTypes(ketType, valueType);
                                mnode.setUseClassConstructor(true);
                            } else {
                                // the type for collection entries cannot be
                                // detected
                            }
                        }
                    }
                    Object value = constructObject(valueNode);
                    property.set(object, value);
                } catch (Exception e) {
                    throw new YAMLException("Cannot create property=" + key + " for JavaBean="
                            + object + "; " + e.getMessage(), e);
                }
            }
            return object;
        }

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                        javaConstructor = c;
                    }
                }
                Object argument;
                if (javaConstructor == null) {
                    throw new YAMLException("No single argument constructor found for " + type);
                } else if (oneArgCount == 1) {
                    argument = constructStandardJavaInstance(
                            javaConstructor.getParameterTypes()[0], node);
                } else {
                    // TODO it should be possible to use implicit types instead
                    // of forcing String. Resolver must be available here to
                    // obtain the implicit tag. Then we can set the tag and call
                    // callConstructor(node) to create the argument instance.
                    // On the other hand it may be safer to require a custom
                    // constructor to avoid guessing the argument class
                    argument = constructScalar(node);
                    try {
                        javaConstructor = type.getConstructor(String.class);
                    } catch (Exception e) {
                        throw new YAMLException("Can't construct a java object for scalar "
                                + node.getTag() + "; No String constructor found. Exception="
                                + e.getMessage(), e);
                    }
                }
                try {

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                Construct charConstructor = yamlConstructors.get(Tag.STR);
                String ch = (String) charConstructor.construct(node);
                if (ch.length() == 0) {
                    result = null;
                } else if (ch.length() != 1) {
                    throw new YAMLException("Invalid node Character: '" + ch + "'; length: "
                            + ch.length());
                } else {
                    result = Character.valueOf(ch.charAt(0));
                }
            } else if (Date.class.isAssignableFrom(type)) {
                Construct dateConstructor = yamlConstructors.get(Tag.TIMESTAMP);
                Date date = (Date) dateConstructor.construct(node);
                if (type == Date.class) {
                    result = date;
                } else {
                    try {
                        java.lang.reflect.Constructor<?> constr = type.getConstructor(long.class);
                        result = constr.newInstance(date.getTime());
                    } catch (Exception e) {
                        throw new YAMLException("Cannot construct: '" + type + "'");
                    }
                }
            } else if (type == Float.class || type == Double.class || type == Float.TYPE
                    || type == Double.TYPE || type == BigDecimal.class) {
                if (type == BigDecimal.class) {
                    result = new BigDecimal(node.getValue());
                } else {
                    Construct doubleConstructor = yamlConstructors.get(Tag.FLOAT);
                    result = doubleConstructor.construct(node);
                    if (type == Float.class || type == Float.TYPE) {
                        result = new Float((Double) result);
                    }
                }
            } else if (type == Byte.class || type == Short.class || type == Integer.class
                    || type == Long.class || type == BigInteger.class || type == Byte.TYPE
                    || type == Short.TYPE || type == Integer.TYPE || type == Long.TYPE) {
                Construct intConstructor = yamlConstructors.get(Tag.INT);
                result = intConstructor.construct(node);
                if (type == Byte.class || type == Byte.TYPE) {
                    result = new Byte(result.toString());
                } else if (type == Short.class || type == Short.TYPE) {
                    result = new Short(result.toString());
                } else if (type == Integer.class || type == Integer.TYPE) {
                    result = Integer.parseInt(result.toString());
                } else if (type == Long.class || type == Long.TYPE) {
                    result = new Long(result.toString());
                } else {
                    // only BigInteger left
                    result = new BigInteger(result.toString());
                }
            } else if (Enum.class.isAssignableFrom(type)) {
                String enumValueName = node.getValue();
                try {
                    result = Enum.valueOf(type, enumValueName);
                } catch (Exception ex) {
                    throw new YAMLException("Unable to find enum value '" + enumValueName
                            + "' for enum class: " + type.getName());
                }
            } else if (Calendar.class.isAssignableFrom(type)) {
                ConstructYamlTimestamp contr = new ConstructYamlTimestamp();
                contr.construct(node);
                result = contr.getCalendar();
            } else {
                throw new YAMLException("Unsupported class: " + type);
            }
            return result;
        }

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        @SuppressWarnings("unchecked")
        public Object construct(Node node) {
            SequenceNode snode = (SequenceNode) node;
            if (Set.class.isAssignableFrom(node.getType())) {
                if (node.isTwoStepsConstruction()) {
                    throw new YAMLException("Set cannot be recursive.");
                } else {
                    return constructSet(snode);
                }
            } else if (Collection.class.isAssignableFrom(node.getType())) {
                if (node.isTwoStepsConstruction()) {
                    return createDefaultList(snode.getValue().size());
                } else {
                    return constructSequence(snode);
                }
            } else if (node.getType().isArray()) {
                if (node.isTwoStepsConstruction()) {
                    return createArray(node.getType(), snode.getValue().size());
                } else {
                    return constructArray(snode);
                }
            } else {
                // create immutable object
                List<java.lang.reflect.Constructor<?>> possibleConstructors = new ArrayList<java.lang.reflect.Constructor<?>>(
                        snode.getValue().size());
                for (java.lang.reflect.Constructor<?> constructor : node.getType()
                        .getConstructors()) {
                    if (snode.getValue().size() == constructor.getParameterTypes().length) {
                        possibleConstructors.add(constructor);
                    }
                }
                if (!possibleConstructors.isEmpty()) {
                    if (possibleConstructors.size() == 1) {
                        Object[] argumentList = new Object[snode.getValue().size()];
                        java.lang.reflect.Constructor<?> c = possibleConstructors.get(0);
                        int index = 0;
                        for (Node argumentNode : snode.getValue()) {
                            Class<?> type = c.getParameterTypes()[index];
                            // set runtime classes for arguments
                            argumentNode.setType(type);
                            argumentList[index++] = constructObject(argumentNode);
                        }


                        try {
                            return c.newInstance(argumentList);
                        } catch (Exception e) {
                            throw new YAMLException(e);
                        }
                    }


                    // use BaseConstructor
                    List<Object> argumentList = (List<Object>) constructSequence(snode);
                    Class<?>[] parameterTypes = new Class[argumentList.size()];
                    int index = 0;
                    for (Object parameter : argumentList) {
                        parameterTypes[index] = parameter.getClass();
                        index++;
                    }


                    for (java.lang.reflect.Constructor<?> c : possibleConstructors) {
                        Class<?>[] argTypes = c.getParameterTypes();
                        boolean foundConstructor = true;
                        for (int i = 0; i < argTypes.length; i++) {
                            if (!wrapIfPrimitive(argTypes[i]).isAssignableFrom(parameterTypes[i])) {
                                foundConstructor = false;
                                break;
                            }
                        }
                        if (foundConstructor) {
                            try {
                                return c.newInstance(argumentList.toArray());
                            } catch (Exception e) {
                                throw new YAMLException(e);
                            }
                        }
                    }
                }
                throw new YAMLException("No suitable constructor with "
                        + String.valueOf(snode.getValue().size()) + " arguments found for "
                        + node.getType());


            }
        }

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                return Short.class;
            }
            if (clazz == Byte.TYPE) {
                return Byte.class;
            }
            throw new YAMLException("Unexpected primitive " + clazz);
        }

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                List<Object> list = (List<Object>) object;
                constructSequenceStep2(snode, list);
            } else if (node.getType().isArray()) {
                constructArrayStep2(snode, object);
            } else {
                throw new YAMLException("Immutable objects cannot be recursive.");
            }
        }

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