parseForItem

    pub fn parseForItem(p: *Parser) Error!bool {
        const def_index = @backingInt(Def.defForItem);
        if (p.depths[def_index] > max_depth) return error.MaxDepth;
        p.depths[def_index] += 1;
        defer p.depths[def_index] -= 1;
        return blk_0: {
            const pos_0 = p.i;
            if (try p.parseExpr() and blk_2: {
                const pos_2 = p.i;
                if (try p.parseDOT2() and blk_4: {
                    const pos_4 = p.i;
                    if (try p.parseExpr()) break :blk_4 true;
                    p.i = pos_4;
                    if (blk_5: {
                        const pos_5 = p.i;
                        const match_5 = try p.parseExprPrefix();
                        p.i = pos_5;
                        break :blk_5 !match_5;
                    }) break :blk_4 true;
                    p.i = pos_4;
                    break :blk_4 false;
                }) break :blk_2 true;
                p.i = pos_2;
                if (blk_3: {
                    const pos_3 = p.i;
                    const match_3 = try p.parseDOT2();
                    p.i = pos_3;
                    break :blk_3 !match_3;
                }) break :blk_2 true;
                p.i = pos_2;
                break :blk_2 false;
            }) break :blk_0 true;
            p.i = pos_0;
            break :blk_0 false;
        };
    }