On 5/7/21 2:45 PM, Pablo Galindo Salgado wrote:

Given that column numbers are not very big compared with line numbers, we plan to store these as unsigned chars

or unsigned shorts. We ran some experiments over the standard library and we found that the overhead of all pyc files is:

* If we use shorts, the total overhead is ~3% (total size 28MB and the extra size is 0.88 MB).

* If we use chars. the total overhead is ~1.5% (total size 28 MB and the extra size is 0.44MB).

One of the disadvantages of using chars is that we can only report columns from 1 to 255 so if an error happens in a column

bigger than that then we would have to exclude it (and not show the highlighting) for that frame. Unsigned short will allow

the values to go from 0 to 65535.

Are lnotab entries required to be a fixed size?  If not:

if column < 255:
    lnotab.write_one_byte(column)
else:
    lnotab.write_one_byte(255)
    lnotab.write_two_bytes(column)