public JsonValue readValue()

in johnzon-core/src/main/java/org/apache/johnzon/core/JsonReaderImpl.java [77:143]
63 lines of code
25 McCabe index (conditional complexity)

    public JsonValue readValue() {
        checkClosed();

        if (!parser.hasNext()) {
            throw new NothingToRead();
        }


        final JsonParser.Event next;
        if (subStreamReader) {
            next = parser.current();
        } else {
            next = parser.next();
        }

        switch (next) {
            case START_OBJECT:
                final JsonObjectBuilder objectBuilder = new JsonObjectBuilderImpl(emptyMap(), bufferProvider, rejectDuplicateKeysMode, provider);
                parseObject(objectBuilder);
                if (!subStreamReader && parser.hasNext()) {
                    throw new JsonParsingException("Expected end of file", parser.getLocation());
                }
                return objectBuilder.build();
            case START_ARRAY:
                final JsonArrayBuilder arrayBuilder = new JsonArrayBuilderImpl(emptyList(), bufferProvider, rejectDuplicateKeysMode, provider);
                parseArray(arrayBuilder);
                if (!subStreamReader && parser.hasNext()) {
                    throw new JsonParsingException("Expected end of file", parser.getLocation());
                }
                return arrayBuilder.build();
            case VALUE_STRING:
                final JsonStringImpl string = new JsonStringImpl(parser.getString());
                if (!subStreamReader && parser.hasNext()) {
                    throw new JsonParsingException("Expected end of file", parser.getLocation());
                }
                return string;
            case VALUE_FALSE:
                if (!subStreamReader && parser.hasNext()) {
                    throw new JsonParsingException("Expected end of file", parser.getLocation());
                }
                return JsonValue.FALSE;
            case VALUE_TRUE:
                if (!subStreamReader && parser.hasNext()) {
                    throw new JsonParsingException("Expected end of file", parser.getLocation());
                }
                return JsonValue.TRUE;
            case VALUE_NULL:
                if (!subStreamReader && parser.hasNext()) {
                    throw new JsonParsingException("Expected end of file", parser.getLocation());
                }
                return JsonValue.NULL;
            case VALUE_NUMBER:
                final JsonNumber number;
                if (parser.isFitLong()) {
                    number = new JsonLongImpl(parser.getLong());
                } else {
                    number = new JsonNumberImpl(parser.getBigDecimal(), provider::checkBigDecimalScale);
                }
                if (!subStreamReader && parser.hasNext()) {
                    throw new JsonParsingException("Expected end of file", parser.getLocation());
                }
                return number;
            default:
                close();
                throw new JsonParsingException("Unknown structure: " + next, parser.getLocation());
        }
    }