GSoC Weekly Report

Weekly Agenda

This week was focused on Union type features. First was to implement the access syntax for Union types and to do a refactor of the ASR structure of Union types.

The access was quick to implement. However, the ASR refactor encountered a major blocker: it depends on the StructType refactor PR. As of the time of this report, the Union type PR remains in draft status.

Achievements

• Implemented Union type access
• Union ASR type refactor

Code Samples

program lp_test
    type:: test_type
        integer :: x
        real    :: y
    end type

    type(test_type)  :: test_union

    ! Memory value of pi
    test_union%x = 1078530011 

    ! Doesn't currently support direct operations
    x = test_union%y
    if ( abs(x - 3.141593) > eps ) error stop

end program

            

Pull Requests

• #7935 Union access implemented
• #7966 Union ASR Refactor

Goals for next week

The main goal for next week is get accessing Union elements so we robustly test if the memory allocation is proper and supporting pythonic types inside union.

Other goals include things like fixing failing tests in LPython after sync and trying to completely remove the reliance on typecodes.