Prototype Black's string joining/splitting

[MichaReiser]

This PR adds a test to verify that the fill element can be used to implement Black's string-processing

The "full" implementation needs to split all strings by words and create a single fill element for it. But that seems straightforward so that it isn't covered by this test.

[MichaReiser]

Current dependencies on/for this PR:

• main
  • PR Prototype Black's string joining/splitting #4449 👈

This comment was auto-generated by Graphite.

[MichaReiser]

The "real" implementation will need to be more careful to keep the number of whitespace between any two words the same. We can use [soft_line_break, if_group_fits(&text("<num_spaces>"))] to accomplish this.

[github-actions]

PR Check Results

Ecosystem

✅ ecosystem check detected no changes.

Benchmark

Linux

group                                      main                                   pr
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linter/all-rules/large/dataset.py          1.00     15.0±0.11ms     2.7 MB/sec    1.00     15.0±0.14ms     2.7 MB/sec
linter/all-rules/numpy/ctypeslib.py        1.00      3.7±0.01ms     4.5 MB/sec    1.00      3.7±0.01ms     4.5 MB/sec
linter/all-rules/numpy/globals.py          1.01    379.2±0.94µs     7.8 MB/sec    1.00    375.9±1.00µs     7.8 MB/sec
linter/all-rules/pydantic/types.py         1.00      6.2±0.04ms     4.1 MB/sec    1.00      6.2±0.02ms     4.1 MB/sec
linter/default-rules/large/dataset.py      1.00      7.4±0.02ms     5.5 MB/sec    1.01      7.5±0.03ms     5.4 MB/sec
linter/default-rules/numpy/ctypeslib.py    1.00   1558.0±4.47µs    10.7 MB/sec    1.01   1569.2±1.80µs    10.6 MB/sec
linter/default-rules/numpy/globals.py      1.00    166.7±0.29µs    17.7 MB/sec    1.01    168.3±0.86µs    17.5 MB/sec
linter/default-rules/pydantic/types.py     1.00      3.3±0.01ms     7.7 MB/sec    1.01      3.3±0.01ms     7.6 MB/sec
parser/large/dataset.py                    1.02      6.0±0.01ms     6.7 MB/sec    1.00      5.9±0.01ms     6.8 MB/sec
parser/numpy/ctypeslib.py                  1.02   1181.3±1.03µs    14.1 MB/sec    1.00   1163.0±0.97µs    14.3 MB/sec
parser/numpy/globals.py                    1.01    120.2±0.36µs    24.5 MB/sec    1.00    119.2±0.45µs    24.8 MB/sec
parser/pydantic/types.py                   1.02      2.6±0.00ms    10.0 MB/sec    1.00      2.5±0.00ms    10.2 MB/sec

Windows

group                                      main                                   pr
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linter/all-rules/large/dataset.py          1.00     21.0±0.74ms  1985.6 KB/sec    1.00     21.0±0.63ms  1979.9 KB/sec
linter/all-rules/numpy/ctypeslib.py        1.01      5.3±0.17ms     3.2 MB/sec    1.00      5.2±0.20ms     3.2 MB/sec
linter/all-rules/numpy/globals.py          1.00   628.1±29.89µs     4.7 MB/sec    1.00   630.3±25.21µs     4.7 MB/sec
linter/all-rules/pydantic/types.py         1.00      8.7±0.38ms     2.9 MB/sec    1.02      8.8±0.33ms     2.9 MB/sec
linter/default-rules/large/dataset.py      1.00     10.1±0.42ms     4.0 MB/sec    1.02     10.2±0.26ms     4.0 MB/sec
linter/default-rules/numpy/ctypeslib.py    1.00      2.1±0.07ms     7.8 MB/sec    1.01      2.2±0.08ms     7.7 MB/sec
linter/default-rules/numpy/globals.py      1.00   247.9±10.21µs    11.9 MB/sec    1.05   260.4±16.82µs    11.3 MB/sec
linter/default-rules/pydantic/types.py     1.00      4.5±0.22ms     5.6 MB/sec    1.01      4.6±0.26ms     5.6 MB/sec
parser/large/dataset.py                    1.00      8.3±0.27ms     4.9 MB/sec    1.01      8.3±0.19ms     4.9 MB/sec
parser/numpy/ctypeslib.py                  1.00  1572.0±48.98µs    10.6 MB/sec    1.01  1586.1±44.22µs    10.5 MB/sec
parser/numpy/globals.py                    1.00    161.3±6.91µs    18.3 MB/sec    1.03    165.8±7.73µs    17.8 MB/sec
parser/pydantic/types.py                   1.00      3.5±0.10ms     7.3 MB/sec    1.00      3.5±0.09ms     7.3 MB/sec