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4 commits
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Ashish
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6cdb846200
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fix(compression): use thread-local tree-sitter parsers in code handler (#893)
## Description `CodeStructureHandler` cached tree-sitter parsers in a process-global dict; the lock only guarded creation, while `parse()` ran unlocked on any thread. tree-sitter `Parser` objects are pyo3 `unsendable` — using one from a non-creator thread panics. The proxy invokes handlers from executor pool threads, so a shared parser is an eventual crash. Same class already fixed in `transforms/code_compressor.py` (#604). Stacked on #892. Closes # <!-- compression-handler review --> ## Type of Change - [x] Bug fix (non-breaking change that fixes an issue) - [ ] New feature (non-breaking change that adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to change) - [ ] Documentation update - [ ] Performance improvement - [ ] Code refactoring (no functional changes) ## Changes Made - `headroom/compression/handlers/code_handler.py`: one parser per (thread, language) via `threading.local()`, porting the pattern from `transforms/code_compressor.py`. - `tests/test_compression/test_code_handler.py`: regression test parsing from a 4-worker thread pool, asserting every call stays on the tree-sitter path. ## Testing - [x] Unit tests pass (`pytest`) - [x] Linting passes (`ruff check .`) - [x] Type checking passes (`mypy headroom`) - [x] New tests added for new functionality - [x] Manual testing performed ### Test Output ```text $ pytest tests/test_compression/ -q 94 passed, 8 skipped ``` ## Real Behavior Proof - Environment: local macOS, Python 3.11, tree-sitter-language-pack 1.8.1, branch `fix/code-threadlocal-parsers` (stacked on #892). - Exact command / steps: `pytest tests/test_compression/ -q`. - Observed result: 16 parses across a 4-worker pool all stay on the tree-sitter path with no pyo3 panic; previously a shared parser would be touched cross-thread. - Not tested: Reproducing the original panic under production concurrency (covered structurally by the thread-pool test). ## Review Readiness - [x] I have performed a self-review - [x] This PR is ready for human review ## Checklist - [x] My code follows the project's style guidelines - [x] I have performed a self-review of my code - [x] I have commented my code, particularly in hard-to-understand areas - [ ] I have made corresponding changes to the documentation - [x] My changes generate no new warnings - [x] I have added tests that prove my fix is effective or that my feature works - [x] New and existing unit tests pass locally with my changes - [ ] I have updated the CHANGELOG.md if applicable ## Screenshots (if applicable) N/A — library change. See Test Output. ## Additional Notes Stacked on #892 — review the top commit until that merges. PR 5 of 7. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Fable 5 <noreply@anthropic.com> Co-authored-by: JD Davis <mxjerrett@gmail.com> |
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Ashish
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615e1ed6f5
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test(compression): fill code handler coverage gaps (#895)
## Description `CodeStructureHandler` had zero dedicated tests before this series — which is exactly why the P0 bugs in #890/#892/#893 went unnoticed. This fills the remaining coverage gaps beyond the per-fix regression tests. Stacked on #893. Closes # <!-- compression-handler review --> ## Type of Change - [ ] Bug fix (non-breaking change that fixes an issue) - [ ] New feature (non-breaking change that adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to change) - [ ] Documentation update - [ ] Performance improvement - [x] Code refactoring (no functional changes) ## Changes Made - `tests/test_compression/test_code_handler.py`: language detection (python/go/rust + default fallback); regex-path signature/import preservation across go/rust/typescript/javascript; regex confidence value; empty/whitespace content; unknown language; mask-length invariant. ## Testing - [x] Unit tests pass (`pytest`) - [x] Linting passes (`ruff check .`) - [x] Type checking passes (`mypy headroom`) - [x] New tests added for new functionality - [x] Manual testing performed ### Test Output ```text $ pytest tests/test_compression/test_code_handler.py -q 25 passed ``` ## Real Behavior Proof - Environment: local macOS, Python 3.11, tree-sitter-language-pack 1.8.1, branch `test/code-handler-coverage` (stacked on #893). - Exact command / steps: `pytest tests/test_compression/test_code_handler.py -q`. - Observed result: 25 tests pass; tree-sitter classes skip cleanly when the pack is absent, regex-path tests always run. - Not tested: N/A — this PR is tests only. ## Review Readiness - [x] I have performed a self-review - [x] This PR is ready for human review ## Checklist - [x] My code follows the project's style guidelines - [x] I have performed a self-review of my code - [x] I have commented my code, particularly in hard-to-understand areas - [ ] I have made corresponding changes to the documentation - [x] My changes generate no new warnings - [x] I have added tests that prove my fix is effective or that my feature works - [x] New and existing unit tests pass locally with my changes - [ ] I have updated the CHANGELOG.md if applicable ## Screenshots (if applicable) N/A — tests only. See Test Output. ## Additional Notes Stacked on #893 — review the top commit until that merges. PR 6 of 7. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Fable 5 <noreply@anthropic.com> |
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Ashish
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b1f700fc27
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fix(compression): convert tree-sitter byte offsets to char offsets (#892)
## Description tree-sitter reports node positions as byte offsets into the UTF-8 encoding, but `CodeStructureHandler` builds a character-indexed mask. Any multi-byte character (accents, emoji, CJK in docstrings/comments/strings) shifted every subsequent span, preserving the wrong characters and leaking signature bytes into bodies. Stacked on #890. Closes # <!-- compression-handler review --> ## Type of Change - [x] Bug fix (non-breaking change that fixes an issue) - [ ] New feature (non-breaking change that adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to change) - [ ] Documentation update - [ ] Performance improvement - [ ] Code refactoring (no functional changes) ## Changes Made - `headroom/compression/handlers/code_handler.py`: remap spans through a byte->char table before masking; pure-ASCII content (byte == char) skips the conversion. - `tests/test_compression/test_code_handler.py`: regression test with `café münü 🎉` in a comment, asserting the following signature and body are correctly aligned. ## Testing - [x] Unit tests pass (`pytest`) - [x] Linting passes (`ruff check .`) - [x] Type checking passes (`mypy headroom`) - [x] New tests added for new functionality - [x] Manual testing performed ### Test Output ```text $ pytest tests/test_compression/ -q 93 passed, 8 skipped ``` ## Real Behavior Proof - Environment: local macOS, Python 3.11, tree-sitter-language-pack 1.8.1, branch `fix/code-byte-char-offsets` (stacked on #890). - Exact command / steps: `pytest tests/test_compression/ -q`. - Observed result: With 9 extra UTF-8 bytes ahead of it, a function signature is exactly preserved and its body stays compressible; before, the offsets were shifted. - Not tested: End-to-end through the live proxy pipeline. ## Review Readiness - [x] I have performed a self-review - [x] This PR is ready for human review ## Checklist - [x] My code follows the project's style guidelines - [x] I have performed a self-review of my code - [x] I have commented my code, particularly in hard-to-understand areas - [ ] I have made corresponding changes to the documentation - [x] My changes generate no new warnings - [x] I have added tests that prove my fix is effective or that my feature works - [x] New and existing unit tests pass locally with my changes - [ ] I have updated the CHANGELOG.md if applicable ## Screenshots (if applicable) N/A — library change. See Test Output. ## Additional Notes Stacked on #890 — review the top commit until that merges. PR 4 of 7. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Fable 5 <noreply@anthropic.com> |
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Ashish
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16ed73bca6
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fix(compression): keep container bodies compressible in code handler (#890)
## Description Two bugs in `CodeStructureHandler`'s tree-sitter path. (1) Container nodes (class/impl/trait/decorated definitions) were marked structural over their full span and `_spans_to_mask` never un-marks, so every method body inside a class was preserved and compression silently no-opped at confidence 0.95. (2) Discovered while testing: `tree-sitter-language-pack >= 1.0` switched to a Rust binding (methods, not attributes; `parse(str)`), so the handler raised `TypeError` on every call and silently fell back to regex. Closes # <!-- compression-handler review --> ## Type of Change - [x] Bug fix (non-breaking change that fixes an issue) - [ ] New feature (non-breaking change that adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to change) - [ ] Documentation update - [ ] Performance improvement - [ ] Code refactoring (no functional changes) ## Changes Made - `headroom/compression/handlers/code_handler.py`: containers emit a signature-only span (start to body start); recursion gives nested functions their own signature/body split; decorated definitions emit no whole-node span. - `headroom/compression/handlers/code_handler.py`: small compat shim supporting both the classic attribute API and the new Rust-binding method API. - `tests/test_compression/test_code_handler.py`: new file (the handler had zero dedicated tests) covering class/decorated/impl body compressibility, regex fallback, and a preservation-ratio bound. ## Testing - [x] Unit tests pass (`pytest`) - [x] Linting passes (`ruff check .`) - [x] Type checking passes (`mypy headroom`) - [x] New tests added for new functionality - [x] Manual testing performed ### Test Output ```text $ pytest tests/test_compression/ -q 92 passed, 8 skipped ``` ## Real Behavior Proof - Environment: local macOS, Python 3.11, tree-sitter-language-pack 1.8.1 installed, branch `fix/code-container-bodies`. - Exact command / steps: `pytest tests/test_compression/ -q`. - Observed result: Class method bodies are now compressible (preservation ratio drops from ~1.0 to roughly the signature fraction); the tree-sitter path runs instead of falling back to regex. - Not tested: End-to-end through the live proxy pipeline. ## Review Readiness - [x] I have performed a self-review - [x] This PR is ready for human review ## Checklist - [x] My code follows the project's style guidelines - [x] I have performed a self-review of my code - [x] I have commented my code, particularly in hard-to-understand areas - [ ] I have made corresponding changes to the documentation - [x] My changes generate no new warnings - [x] I have added tests that prove my fix is effective or that my feature works - [x] New and existing unit tests pass locally with my changes - [ ] I have updated the CHANGELOG.md if applicable ## Screenshots (if applicable) N/A — library change. See Test Output. ## Additional Notes PR 3 of 7; branched fresh from main (independent of #887/#889). 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-authored-by: Claude Fable 5 <noreply@anthropic.com> |