new package Encoding

[jetjinser]

WIP, all commits will be reorganized when ready.

TODO

• implement decoding UTF16BE
• implement encoding
• consider Stream {Lossy, Strict}Chars
• consider Buffer from_{bytes, array} api
• refactor decode_strict to error-raisable function instead of just abort.

usage

see encoding/encoding_test.mbt.

api

see encoding/encoding.mbti.

[coveralls]

Pull Request Test Coverage Report for Build 3948

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 86 of 175 (49.14%) changed or added relevant lines in 8 files are covered.
• 6 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-1.0%) to 78.933%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
encoding/encoding.mbt	5	6	83.33%
builtin/iter.mbt	0	3	0.0%
int/int.mbt	0	3	0.0%
encoding/types.mbt	14	19	73.68%
buffer/buffer.mbt	9	16	56.25%
builtin/bytes.mbt	0	19	0.0%
encoding/decoding.mbt	57	108	52.78%

Files with Coverage Reduction	New Missed Lines	%
strconv/int.mbt	6	82.35%

Totals
Change from base Build 3918:	-1.0%
Covered Lines:	4440
Relevant Lines:	5625

---

💛 - Coveralls

[jetjinser]

ping @Yoorkin.

[Yoorkin]

We may need to avoid labelled dependency: #1231 (comment)

[Yoorkin]

Use bs0.write_byte() instead of random access? The op_set method for buffer is weird