[
    Function {
        name: Identifier {
            name: "a",
        },
        params: [],
        body: [
            Echo {
                values: [
                    LiteralString {
                        value: "looping..\n",
                    },
                ],
            },
            Return {
                value: Some(
                    Null,
                ),
            },
        ],
        return_type: Some(
            Null,
        ),
        by_ref: false,
    },
    Expression {
        expr: Infix {
            lhs: Variable {
                name: "bar",
            },
            op: Assign,
            rhs: Call {
                target: Identifier {
                    name: "a",
                },
                args: [
                    Arg {
                        name: None,
                        value: VariadicPlaceholder,
                        unpack: false,
                    },
                ],
            },
        },
    },
    Label {
        label: Identifier {
            name: "foo",
        },
    },
    Expression {
        expr: Call {
            target: Variable {
                name: "bar",
            },
            args: [],
        },
    },
    Goto {
        label: Identifier {
            name: "foo",
        },
    },
]