函数体无法识别函数定义

Question

我创建了一个名为Payload 的类，并在一个名为LineShape 的类中有一个std::vector<Payload>。我还在LineShape 中创建了一个函数，以在给定索引处从std::vector 获取Payload。这是Payload：

payload.h

class Payload {
public:

Payload (payload_type pType) {
    type = pType;
}

payload_type getPayloadType() {
    return type;
}

private:
    payload_type type;
};

以及导致问题的函数：

LineShape.h

    Payload getPayloadAt(int index) {
        return transfer.at(index);
    }

Visual Studio 返回以下错误：

C2334    unexpected token(s) preceding '{'; skipping apparent function body

显然，这意味着由于函数的定义，它没有将函数的主体识别为函数，但看起来没问题？

编辑： 这是LineShape 类的其余部分：

class LineShape {
public:
    sf::LineShape(sf::Vector2f i_point1, sf::Vector2f i_point2, float i_thickness = 5) {
        point1 = i_point1;
        point2 = i_point2;
        thickness = i_thickness;

        vertArr.setPrimitiveType(sf::LinesStrip);
        vertArr.resize(2);

        vertArr[0].position = point1;
        vertArr[1].position = point2;

        updateShape();
    }

    void updateShape() {
        float sX = point1.x - point2.x;
        float sY = point1.y - point2.y;

        float sX2 = pow(sX, 2);
        float sY2 = pow(sY, 2);

        float sD = abs(sqrt(sX2 + sY2));
        float shapeAngle_rad = std::atan2(sY, sX);
        float shapeAngle = shapeAngle_rad * 180 / PI;

        float shapeLength = sf::length(sf::Vector2f(point2 - point1));

        arrShape.setSize(sf::Vector2f(shapeLength, thickness));
        arrShape.setPosition(point2);
        arrShape.setRotation(shapeAngle);
    }

    sf::Vector2f getPointPosition(sf::pointNum targetPoint) {
        switch (targetPoint) {
            case sf::pointNum::point1: {
                return point1;
            }
            case sf::pointNum::point2: {
                return point2;
            }
        };
    }

    void setPointPosition(sf::pointNum targetPoint, sf::Vector2f position) {
        switch (targetPoint) {
            case sf::pointNum::point1: {
                point1 = position;
            }
            case sf::pointNum::point2: {
                point2 = position;
            }
        };
        updateShape();
    }

    void setColor(sf::Color color) {
        arrShape.setFillColor(color);
    }

    void setOutlineColor(sf::Color color) {
        arrShape.setOutlineColor(color);
    }

    void setOutlineWidth(float width) {
        arrShape.setOutlineThickness(width);
    }

    void draw(sf::RenderWindow &window) {
        window.draw(arrShape);
    }

    // PAYLOADS

    void addPayload(Payload payload, bool through_filter = true) {
        if (through_filter) {
            if (payload.getPayloadType() == transferFilter) {
                transfer.push_back(payload);
            }
            else {
                G_LOG::INCORRECT_ITEM_PASSED_TO_FILTER();
            };
        }
        else {
            transfer.push_back(payload);
        };
    }

    Payload getPayloadAt(int index) {
        return transfer.at(index);
    }

    std::vector<Payload> getTransfer() {
        return transfer;
    }

    void setPayloadFilter(payload_type filter) {
        transferFilter = filter;
    }

private:
    sf::VertexArray vertArr;

    sf::RectangleShape arrShape;

    std::vector<Payload> transfer;
    payload_type transferFilter;

    sf::Vector2f point1;
    sf::Vector2f point2;
    float thickness;
};`

Answer 1

在分号之后的 Lineshape 类的末尾似乎有一个“`”，但可能只是由于复制粘贴错误造成的。