Skip LibCST parsing for standard dedent adjustments #9769
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CodSpeed Performance ReportMerging #9769 will improve performances by 29.71%Comparing Summary
Benchmarks breakdown
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charliermarsh
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Feb 2, 2024
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| code | total | + violation | - violation | + fix | - fix |
|---|---|---|---|---|---|
| S101 | 117 | 0 | 117 | 0 | 0 |
| ANN202 | 70 | 0 | 70 | 0 | 0 |
| FA100 | 55 | 0 | 55 | 0 | 0 |
| AIR001 | 40 | 0 | 40 | 0 | 0 |
| ANN201 | 38 | 0 | 38 | 0 | 0 |
| ANN001 | 28 | 0 | 28 | 0 | 0 |
| D103 | 24 | 0 | 24 | 0 | 0 |
| T201 | 23 | 0 | 23 | 0 | 0 |
| PLC0415 | 18 | 0 | 18 | 0 | 0 |
| COM812 | 14 | 0 | 14 | 0 | 0 |
| SIM117 | 12 | 0 | 12 | 0 | 0 |
| FBT001 | 6 | 0 | 6 | 0 | 0 |
| FBT002 | 5 | 0 | 5 | 0 | 0 |
| PT012 | 5 | 0 | 5 | 0 | 0 |
| PTH118 | 5 | 0 | 5 | 0 | 0 |
| PTH123 | 4 | 0 | 4 | 0 | 0 |
| FIX002 | 4 | 0 | 4 | 0 | 0 |
| TD002 | 4 | 0 | 4 | 0 | 0 |
| TD003 | 4 | 0 | 4 | 0 | 0 |
| D106 | 4 | 0 | 4 | 0 | 0 |
| RET505 | 3 | 0 | 3 | 0 | 0 |
| D101 | 3 | 0 | 3 | 0 | 0 |
| D205 | 3 | 0 | 3 | 0 | 0 |
| ANN401 | 3 | 0 | 3 | 0 | 0 |
| B015 | 2 | 0 | 2 | 0 | 0 |
| CPY001 | 2 | 0 | 2 | 0 | 0 |
| D202 | 2 | 0 | 2 | 0 | 0 |
| D212 | 2 | 0 | 2 | 0 | 0 |
| PLW1514 | 2 | 0 | 2 | 0 | 0 |
| D107 | 2 | 0 | 2 | 0 | 0 |
| D400 | 2 | 0 | 2 | 0 | 0 |
| D415 | 2 | 0 | 2 | 0 | 0 |
| C408 | 2 | 0 | 2 | 0 | 0 |
| PERF401 | 1 | 0 | 1 | 0 | 0 |
| A002 | 1 | 0 | 1 | 0 | 0 |
| A001 | 1 | 0 | 1 | 0 | 0 |
| D100 | 1 | 0 | 1 | 0 | 0 |
| D401 | 1 | 0 | 1 | 0 | 0 |
| D404 | 1 | 0 | 1 | 0 | 0 |
| PTH100 | 1 | 0 | 1 | 0 | 0 |
| PTH120 | 1 | 0 | 1 | 0 | 0 |
| D209 | 1 | 0 | 1 | 0 | 0 |
| PLR0913 | 1 | 0 | 1 | 0 | 0 |
| PLR0917 | 1 | 0 | 1 | 0 | 0 |
| C901 | 1 | 0 | 1 | 0 | 0 |
| PLR0915 | 1 | 0 | 1 | 0 | 0 |
| PLR1702 | 1 | 0 | 1 | 0 | 0 |
| PLR6201 | 1 | 0 | 1 | 0 | 0 |
| PLR2004 | 1 | 0 | 1 | 0 | 0 |
| TD004 | 1 | 0 | 1 | 0 | 0 |
| RET504 | 1 | 0 | 1 | 0 | 0 |
| PLR0914 | 1 | 0 | 1 | 0 | 0 |
| ARG001 | 1 | 0 | 1 | 0 | 0 |
Formatter (stable)
ℹ️ ecosystem check encountered format errors. (no format changes; 2 project errors)
sphinx-doc/sphinx (error)
ruff format --no-preview --exclude tests/roots/test-pycode/cp_1251_coded.py
ruff failed
Cause: Selection of unstable rules without the `--preview` flag is not allowed. Enable preview or remove selection of:
- FURB113
- FURB131
- FURB132
openai/openai-cookbook (error)
warning: Detected debug build without --no-cache.
error: Failed to parse examples/dalle/Image_generations_edits_and_variations_with_DALL-E.ipynb:3:7:8: Unexpected token 'prompt'
Formatter (preview)
ℹ️ ecosystem check encountered format errors. (no format changes; 1 project error)
openai/openai-cookbook (error)
ruff format --preview
warning: Detected debug build without --no-cache.
error: Failed to parse examples/dalle/Image_generations_edits_and_variations_with_DALL-E.ipynb:3:7:8: Unexpected token 'prompt'
MichaReiser
approved these changes
Feb 2, 2024
Comment on lines
+141
to
+145
| // Look at the indentation of the first line, to determine the "baseline" indentation. | ||
| let existing_indent_len = text | ||
| .universal_newlines() | ||
| .next() | ||
| .map_or(0, |line| line.len() - line.trim_start().len()); |
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Nit: Why not indentation_at_offset?
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Because the text here is the "full line", not the start of the content.
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Summary
Often, when fixing, we need to dedent a block of code (e.g., if we remove an
ifand dedent its body). Today, we use LibCST to parse and adjust the indentation, which is really expensive -- but this is only really necessary if the block contains a multiline string, since naively adjusting the indentation for such a string can change the whitespace within the string.This PR uses a simple dedent implementation for cases in which the block doesn't intersect with a multi-line string (or an f-string, since we don't support tracking multi-line strings for f-strings right now).
We could improve this even further by using the ranges to guide the dedent function, such that we don't apply the dedent if the line starts within a multiline string. But that would also need to take f-strings into account, which is a little tricky.
Test Plan
cargo test