private Object convertTo()

in johnzon-mapper/src/main/java/org/apache/johnzon/mapper/MappingParserImpl.java [492:568]
72 lines of code
36 McCabe index (conditional complexity)

    private Object convertTo(final Adapter converter, final JsonValue jsonValue, final JsonPointerTracker jsonPointer,
                             final Type targetType) {
        final JsonValue.ValueType valueType = jsonValue != null ? jsonValue.getValueType() : null;

        final AdapterKey key = getAdapterKey(converter);
        if (key != null && JsonValue.class == key.getTo()) {
            return converter.to(jsonValue);
        }

        if (jsonValue == null) {
            return getNullValue(targetType);
        }

        if (JsonValue.ValueType.OBJECT == valueType) {
            if (JsonObject.class == key.getTo() || JsonStructure.class == key.getTo()) {
                return converter.to(jsonValue.asJsonObject());
            }
            final Object param;
            try {
                Type to = key.getTo();
                param = buildObject(to, JsonObject.class.cast(jsonValue), to instanceof Class, jsonPointer, getSkippedConverters());
            } catch (final Exception e) {
                throw new MapperException(e);
            }
            return converter.to(param);
        }

        if (NULL.equals(valueType)) {
            return null;
        }
        if (STRING.equals(valueType)) {
            if (key.getTo() == JsonString.class) {
                return converter.to(JsonString.class.cast(jsonValue));
            }
            return converter.to(JsonString.class.cast(jsonValue).getString());
        }
        if (TRUE.equals(valueType) || FALSE.equals(valueType)) {
            if (key != null) {
                if (boolean.class == key.getTo() || Boolean.class == key.getTo()) {
                    return converter.to(Boolean.parseBoolean(jsonValue.toString()));
                }
            }
        }
        if (NUMBER.equals(valueType)) {
            if (key != null) {
                if (Long.class == key.getTo() || long.class == key.getTo()) {
                    return converter.to(JsonNumber.class.cast(jsonValue).longValue());
                } else if (Integer.class == key.getTo() || int.class == key.getTo()) {
                    return converter.to(JsonNumber.class.cast(jsonValue).intValue());
                } else if (Double.class == key.getTo() || double.class == key.getTo()) {
                    return converter.to(JsonNumber.class.cast(jsonValue).doubleValue());
                } else if (Float.class == key.getTo() || float.class == key.getTo()) {
                    return converter.to(JsonNumber.class.cast(jsonValue).doubleValue());
                } else if (BigInteger.class == key.getTo()) {
                    return converter.to(JsonNumber.class.cast(jsonValue).bigIntegerValue());
                } else if (BigDecimal.class == key.getTo() ||  Number.class == key.getTo()) {
                    return converter.to(JsonNumber.class.cast(jsonValue).bigDecimalValue());
                } else if (JsonNumber.class == key.getTo()) {
                    return converter.to(JsonNumber.class.cast(jsonValue));
                }
            }
        }
        if (ARRAY.equals(valueType)) {
            if (JsonArray.class == key.getTo() || JsonStructure.class == key.getTo()) {
                return converter.to(jsonValue.asJsonObject());
            }
            if (TypeAwareAdapter.class.isInstance(converter)) {
                final TypeAwareAdapter adapter = TypeAwareAdapter.class.cast(converter);
                if (adapter.getFrom().equals(targetType)) {
                    return converter.to(readObject(jsonValue, adapter.getTo()));
                }
            }
            return buildArray(key.getTo(), jsonValue.asJsonArray(), null, null, jsonPointer, null);
        }
        return converter.to(jsonValue.toString());

    }