parseParamDecl

    pub fn parseParamDecl(p: *Parser) Error!bool {
        const def_index = @backingInt(Def.defParamDecl);
        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.parsedoc_comment() or true) and blk_2: {
                const pos_2 = p.i;
                if (try p.parseKEYWORD_noalias()) break :blk_2 true;
                p.i = pos_2;
                if ((try p.parseKEYWORD_comptime() or true)) break :blk_2 true;
                p.i = pos_2;
                break :blk_2 false;
            } and (blk_3: {
                const pos_3 = p.i;
                if (try p.parseIDENTIFIER() and try p.parseCOLON()) break :blk_3 true;
                p.i = pos_3;
                break :blk_3 false;
            } or true) and try p.parseParamType()) break :blk_0 true;
            p.i = pos_0;
            break :blk_0 false;
        };
    }