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**Context:** This is an experimental performance optimization that we're hoping to use for our internal linter at Instagram. I added some documentation, but it's unsupported, and isn't very user-friendly. This adds `ExperimentalReentrantCodegenProvider`, which tracks the codegen's internal state (indentation level, character offsets, encoding, etc.) and for each statement, it stores a `CodegenPartial` object. The `CodegenPartial` object has enough information about the previous codegen pass to run the codegen on part of a tree and patch the result back into the original module's string. In cases where we need to generate a bunch of small independent patches for the same file (and we can't just generate a new tree with each patch applied), this *should* be a faster alternative. I don't have any performance numbers because I still need to test this end-to-end with our internal codebase, but I'd be shocked if it was slower than what we're doing. This could theoretically live outside of LibCST, but it depends on a whole bunch of LibCST internals, so there's some value in making sure that this is in sync with the rest of LibCST. |
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| .. | ||
| tests | ||
| __init__.py | ||
| base.py | ||
| deep_equals.py | ||
| expression.py | ||
| internal.py | ||
| module.py | ||
| op.py | ||
| statement.py | ||
| whitespace.py | ||