[
    Function {
        name: Identifier {
            start: (
                3,
                10,
            ),
            name: "a",
            end: (
                3,
                11,
            ),
        },
        attributes: [],
        params: [],
        body: [
            Echo {
                values: [
                    LiteralString {
                        value: "looping..\n",
                    },
                ],
            },
            Return {
                value: Some(
                    Null,
                ),
            },
        ],
        return_type: Some(
            Null,
        ),
        by_ref: false,
    },
    Expression {
        expr: Infix {
            lhs: Variable(
                Variable {
                    start: (
                        9,
                        1,
                    ),
                    name: "bar",
                    end: (
                        9,
                        6,
                    ),
                },
            ),
            op: Assign,
            rhs: Call {
                target: Identifier(
                    Identifier {
                        start: (
                            9,
                            8,
                        ),
                        name: "a",
                        end: (
                            9,
                            9,
                        ),
                    },
                ),
                args: [
                    Arg {
                        name: None,
                        value: VariadicPlaceholder,
                        unpack: false,
                    },
                ],
            },
        },
    },
    Label {
        label: Identifier {
            start: (
                11,
                1,
            ),
            name: "foo",
            end: (
                11,
                4,
            ),
        },
    },
    Expression {
        expr: Call {
            target: Variable(
                Variable {
                    start: (
                        12,
                        5,
                    ),
                    name: "bar",
                    end: (
                        12,
                        9,
                    ),
                },
            ),
            args: [],
        },
    },
    Goto {
        label: Identifier {
            start: (
                13,
                10,
            ),
            name: "foo",
            end: (
                13,
                13,
            ),
        },
    },
]