[
    Expression {
        expr: Infix {
            lhs: Variable(
                Variable {
                    start: (
                        4,
                        1,
                    ),
                    name: "a",
                    end: (
                        4,
                        4,
                    ),
                },
            ),
            op: Assign,
            rhs: LiteralInteger {
                i: "4",
            },
        },
    },
    Expression {
        expr: Infix {
            lhs: Variable(
                Variable {
                    start: (
                        6,
                        1,
                    ),
                    name: "b",
                    end: (
                        6,
                        4,
                    ),
                },
            ),
            op: Assign,
            rhs: Match {
                condition: Variable(
                    Variable {
                        start: (
                            6,
                            13,
                        ),
                        name: "a",
                        end: (
                            6,
                            15,
                        ),
                    },
                ),
                default: None,
                arms: [
                    MatchArm {
                        conditions: [
                            LiteralInteger {
                                i: "1",
                            },
                            LiteralInteger {
                                i: "2",
                            },
                            LiteralInteger {
                                i: "3",
                            },
                            LiteralInteger {
                                i: "4",
                            },
                        ],
                        body: Null,
                    },
                ],
            },
        },
    },
]