2 commits

Author	SHA1	Message	Date
jedarden	6d59706cc4	docs(pdftract-6bxw): add ObjStm parser verification note ... Add comprehensive verification note documenting that the ObjStm parser implementation is complete and all acceptance criteria are met. All 16 unit tests pass, covering: - N=10 object parsing (critical test) - /Extends chain handling - Circular reference detection - Truncated ObjStm recovery - Decompression bomb protection - Cache hit verification (Arc::ptr_eq) - Missing key errors - Embedded stream rejection - Depth limit enforcement Refs: pdftract-6bxw	2026-05-22 15:00:32 -04:00
jedarden	13e815e40c	feat(pdftract-6bxw): implement object stream (ObjStm) parser ... Implement the parser for PDF 1.5+ object streams with: - Decompression via Phase 1.5 stream decoder - Arc<RwLock<HashMap>> caching for thread-safe access - /Extends chain support with cycle detection - Depth limit (MAX_EXTENDS_DEPTH = 16) for adversarial protection - get_object() API for xref type-2 entry resolution Acceptance criteria verified: - Critical test: N=10 objects all dereference correctly - /Extends chain: both ObjStms' objects dereference correctly - Cyclic /Extends: emits STRUCT_CIRCULAR_REF - Truncated ObjStm: partial objects + diagnostic - Decompression bomb: emits STREAM_BOMB - Cache hit: returns cached Arc (Arc::ptr_eq verified) Unit tests: 12 tests covering all acceptance criteria and edge cases. Refs: pdftract-6bxw, plan Phase 1.2 line 1072	2026-05-20 19:03:53 -04:00