PRINT-BANG INPUT (DISPLAY): "hi" 1 + (25) + 1 (1 + 1)
PRINT-BANG INPUT (DEBUG): TokenStream [
    Literal {
        kind: Str,
        symbol: "hi",
        suffix: None,
        span: $DIR/nodelim-groups.rs:16:42: 16:46 (#3),
    },
    Group {
        delimiter: None,
        stream: TokenStream [
            Literal {
                kind: Integer,
                symbol: "1",
                suffix: None,
                span: $DIR/nodelim-groups.rs:20:16: 20:17 (#0),
            },
            Punct {
                ch: '+',
                spacing: Alone,
                span: $DIR/nodelim-groups.rs:20:18: 20:19 (#0),
            },
            Group {
                delimiter: Parenthesis,
                stream: TokenStream [
                    Literal {
                        kind: Integer,
                        symbol: "25",
                        suffix: None,
                        span: $DIR/nodelim-groups.rs:20:21: 20:23 (#0),
                    },
                ],
                span: $DIR/nodelim-groups.rs:20:20: 20:24 (#0),
            },
            Punct {
                ch: '+',
                spacing: Alone,
                span: $DIR/nodelim-groups.rs:20:25: 20:26 (#0),
            },
            Literal {
                kind: Integer,
                symbol: "1",
                suffix: None,
                span: $DIR/nodelim-groups.rs:20:27: 20:28 (#0),
            },
        ],
        span: $DIR/nodelim-groups.rs:16:47: 16:51 (#3),
    },
    Group {
        delimiter: Parenthesis,
        stream: TokenStream [
            Literal {
                kind: Integer,
                symbol: "1",
                suffix: None,
                span: $DIR/nodelim-groups.rs:16:53: 16:54 (#3),
            },
            Punct {
                ch: '+',
                spacing: Alone,
                span: $DIR/nodelim-groups.rs:16:55: 16:56 (#3),
            },
            Literal {
                kind: Integer,
                symbol: "1",
                suffix: None,
                span: $DIR/nodelim-groups.rs:16:57: 16:58 (#3),
            },
        ],
        span: $DIR/nodelim-groups.rs:16:52: 16:59 (#3),
    },
]
PRINT-BANG INPUT (DISPLAY): "hi" "hello".len() + "world".len() (1 + 1)
PRINT-BANG INPUT (DEBUG): TokenStream [
    Literal {
        kind: Str,
        symbol: "hi",
        suffix: None,
        span: $DIR/nodelim-groups.rs:16:42: 16:46 (#8),
    },
    Group {
        delimiter: None,
        stream: TokenStream [
            Group {
                delimiter: None,
                stream: TokenStream [
                    Literal {
                        kind: Str,
                        symbol: "hello",
                        suffix: None,
                        span: $DIR/nodelim-groups.rs:21:17: 21:24 (#0),
                    },
                    Punct {
                        ch: '.',
                        spacing: Alone,
                        span: $DIR/nodelim-groups.rs:21:24: 21:25 (#0),
                    },
                    Ident {
                        ident: "len",
                        span: $DIR/nodelim-groups.rs:21:25: 21:28 (#0),
                    },
                    Group {
                        delimiter: Parenthesis,
                        stream: TokenStream [],
                        span: $DIR/nodelim-groups.rs:21:28: 21:30 (#0),
                    },
                ],
                span: $DIR/nodelim-groups.rs:15:49: 15:54 (#7),
            },
            Punct {
                ch: '+',
                spacing: Alone,
                span: $DIR/nodelim-groups.rs:15:55: 15:56 (#7),
            },
            Group {
                delimiter: None,
                stream: TokenStream [
                    Literal {
                        kind: Str,
                        symbol: "world",
                        suffix: None,
                        span: $DIR/nodelim-groups.rs:21:33: 21:40 (#0),
                    },
                    Punct {
                        ch: '.',
                        spacing: Alone,
                        span: $DIR/nodelim-groups.rs:21:40: 21:41 (#0),
                    },
                    Ident {
                        ident: "len",
                        span: $DIR/nodelim-groups.rs:21:41: 21:44 (#0),
                    },
                    Group {
                        delimiter: Parenthesis,
                        stream: TokenStream [],
                        span: $DIR/nodelim-groups.rs:21:44: 21:46 (#0),
                    },
                ],
                span: $DIR/nodelim-groups.rs:15:57: 15:62 (#7),
            },
        ],
        span: $DIR/nodelim-groups.rs:16:47: 16:51 (#8),
    },
    Group {
        delimiter: Parenthesis,
        stream: TokenStream [
            Literal {
                kind: Integer,
                symbol: "1",
                suffix: None,
                span: $DIR/nodelim-groups.rs:16:53: 16:54 (#8),
            },
            Punct {
                ch: '+',
                spacing: Alone,
                span: $DIR/nodelim-groups.rs:16:55: 16:56 (#8),
            },
            Literal {
                kind: Integer,
                symbol: "1",
                suffix: None,
                span: $DIR/nodelim-groups.rs:16:57: 16:58 (#8),
            },
        ],
        span: $DIR/nodelim-groups.rs:16:52: 16:59 (#8),
    },
]