renderSpace

fn renderSpace(r: *Render, token_index: Ast.TokenIndex, lexeme_len: usize, space: Space) Error!void {
    const tree = r.tree;
    const ais = r.ais;

    const next_token_tag = tree.tokenTag(token_index + 1);

    if (space == .skip) return;

    if (space == .comma and next_token_tag != .comma) {
        try ais.writeByte(',');
    }
    if (space == .semicolon or space == .comma) ais.enableSpaceMode(space);
    defer ais.disableSpaceMode();
    const comment = try renderComments(
        r,
        tree.tokenStart(token_index) + lexeme_len,
        tree.tokenStart(token_index + 1),
    );
    switch (space) {
        .none => {},
        .space => if (!comment) try ais.writeByte(' '),
        .newline => if (!comment) try ais.insertNewline(),

        .comma => if (next_token_tag == .comma) {
            try renderToken(r, token_index + 1, .newline);
        } else if (!comment) {
            try ais.insertNewline();
        },

        .comma_space => if (next_token_tag == .comma) {
            try renderToken(r, token_index + 1, .space);
        } else if (!comment) {
            try ais.writeByte(' ');
        },

        .semicolon => if (next_token_tag == .semicolon) {
            try renderToken(r, token_index + 1, .newline);
        } else if (!comment) {
            try ais.insertNewline();
        },

        .skip => unreachable,
    }
}