Set State with Props from Parent Component

Is there a way to set the state in a Component with the Props the Component receives from a Parent Component?

export default class SomeComp extends Component {
    constructor(props) {
        super(props);

        this.state = someProps; // <-- I need the props to be the state of the Component
    }


    render() {
        const { someProps } = this.props;
        ...
    }
}

Or can I write a function, something like

export default class SomeComp extends Component {
    constructor(props) {
        super(props);

    }

    _setProps = (someProps) => {
          this.State = someProps;
    }

    render() {
        const { someProps } = this.props;
        this._setProps(someProps);
        ...
    }
}