[
    Function {
        name: Identifier {
            start: (
                3,
                10,
            ),
            name: "fib",
            end: (
                3,
                13,
            ),
        },
        attributes: [],
        params: [
            Param {
                name: Variable {
                    start: (
                        3,
                        14,
                    ),
                    name: "n",
                    end: (
                        3,
                        16,
                    ),
                },
                attributes: [],
                type: None,
                variadic: false,
                default: None,
                flags: [],
                by_ref: false,
            },
        ],
        body: [
            If {
                condition: Infix {
                    lhs: Variable(
                        Variable {
                            start: (
                                4,
                                9,
                            ),
                            name: "n",
                            end: (
                                4,
                                12,
                            ),
                        },
                    ),
                    op: LessThan,
                    rhs: LiteralInteger {
                        i: 2,
                    },
                },
                then: [
                    Return {
                        value: Some(
                            Variable(
                                Variable {
                                    start: (
                                        5,
                                        16,
                                    ),
                                    name: "n",
                                    end: (
                                        5,
                                        18,
                                    ),
                                },
                            ),
                        ),
                    },
                ],
                else_ifs: [],
                else: None,
            },
            Return {
                value: Some(
                    Infix {
                        lhs: Call {
                            target: Identifier(
                                Identifier {
                                    start: (
                                        8,
                                        12,
                                    ),
                                    name: "fib",
                                    end: (
                                        8,
                                        15,
                                    ),
                                },
                            ),
                            args: [
                                Arg {
                                    name: None,
                                    value: Infix {
                                        lhs: Variable(
                                            Variable {
                                                start: (
                                                    8,
                                                    16,
                                                ),
                                                name: "n",
                                                end: (
                                                    8,
                                                    19,
                                                ),
                                            },
                                        ),
                                        op: Sub,
                                        rhs: LiteralInteger {
                                            i: 1,
                                        },
                                    },
                                    unpack: false,
                                },
                            ],
                        },
                        op: Add,
                        rhs: Call {
                            target: Identifier(
                                Identifier {
                                    start: (
                                        8,
                                        26,
                                    ),
                                    name: "fib",
                                    end: (
                                        8,
                                        29,
                                    ),
                                },
                            ),
                            args: [
                                Arg {
                                    name: None,
                                    value: Infix {
                                        lhs: Variable(
                                            Variable {
                                                start: (
                                                    8,
                                                    30,
                                                ),
                                                name: "n",
                                                end: (
                                                    8,
                                                    33,
                                                ),
                                            },
                                        ),
                                        op: Sub,
                                        rhs: LiteralInteger {
                                            i: 2,
                                        },
                                    },
                                    unpack: false,
                                },
                            ],
                        },
                    },
                ),
            },
        ],
        return_type: None,
        by_ref: false,
    },
]