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pdftract/crates/pdftract-core/src
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jedarden cbbe7e5f44 feat(pdftract-62uon): implement Do operator for form XObject execution 
- Add ResourceStack for nested resource scope management
- Add ExecutionContext for cycle/depth detection in form XObject recursion
- Add execute_with_do() function with full graphics state support (q/Q/cm/Do)
- Add ImageXObject type for recording encountered images
- Add comprehensive tests for ResourceStack, ExecutionContext, and Do operator

Per Phase 3.3 (plan.md:1579-1593):
- Form XObject lookup via ResourceStack
- /Matrix application to CTM
- Cycle detection (STRUCT_XOBJECT_CYCLE)
- Depth limiting (STRUCT_DEPTH_EXCEEDED, max 20)
- Image XObject recording without glyph production

Acceptance criteria:
- ResourceStack shadowing: form resources shadow parent resources
- Cycle detection: duplicate XObject ID triggers STRUCT_XOBJECT_CYCLE
- Depth limit: 20-level max, triggers STRUCT_DEPTH_EXCEEDED
- Image XObjects: recorded with CTM-transformed bbox, no glyphs

Closes: pdftract-62uon
2026-05-24 15:42:26 -04:00
..
annotation feat(pdftract-46qa): implement 7.6.1 annotation walker dispatcher 2026-05-24 15:30:45 -04:00
attachment feat(pdftract-3lir): implement Filespec dict + EF stream decoder 2026-05-24 13:54:27 -04:00
cache feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
fingerprint feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
font feat(pdftract-2iur): implement nearest-neighbor scanner with Hamming distance and frequency tie-break 2026-05-24 06:57:27 -04:00
forms feat(pdftract-5qca): implement form_fields JSON output + schema integration 2026-05-24 14:36:03 -04:00
layout feat(pdftract-64j83): implement column label assignment to Span.column + Line.column 2026-05-24 14:45:19 -04:00
ocr/preprocessing feat(pdftract-6dki1): implement histogram stretch contrast normalization 2026-05-24 10:30:20 -04:00
parser feat(pdftract-66ykq): implement CCITTFaxDecode passthrough with diagnostics 2026-05-24 13:20:25 -04:00
profiles feat(pdftract-64p5): implement classify CLI subcommand and --auto flag 2026-05-24 15:16:56 -04:00
receipts feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
render feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
schema feat(pdftract-5qca): implement form_fields JSON output + schema integration 2026-05-24 14:36:03 -04:00
signature feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
table feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
atomic_file_writer.rs feat(pdftract-68wfa): implement AtomicFileWriter for atomic file writes 2026-05-24 13:02:37 -04:00
classify.rs feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
content_stream.rs feat(pdftract-62uon): implement Do operator for form XObject execution 2026-05-24 15:42:26 -04:00
diagnostics.rs feat(pdftract-66ykq): implement CCITTFaxDecode passthrough with diagnostics 2026-05-24 13:20:25 -04:00
document.rs feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
dpi.rs feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
extract.rs feat(pdftract-5qca): implement form_fields JSON output + schema integration 2026-05-24 14:36:03 -04:00
graphics_state.rs feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
hybrid.rs feat(pdftract-64j83): implement column label assignment to Span.column + Line.column 2026-05-24 14:45:19 -04:00
lib.rs feat(pdftract-46qa): implement 7.6.1 annotation walker dispatcher 2026-05-24 15:30:45 -04:00
markdown.rs feat(pdftract-5qca): implement form_fields JSON output + schema integration 2026-05-24 14:36:03 -04:00
ocr.rs feat(pdftract-6dki1): implement histogram stretch contrast normalization 2026-05-24 10:30:20 -04:00
options.rs feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
preprocess.rs feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
render.rs feat(pdftract-axcri): record inline images as ImageXObject entries 2026-05-24 07:41:50 -04:00
semaphore.rs feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
span_flags.rs feat(pdftract-cbrbg): implement span flag detector for Phase 4.1 2026-05-24 07:28:25 -04:00
url_validation.rs feat(pdftract-3s2i): implement Phase 5.5.2 validation filter 2026-05-24 04:57:17 -04:00
word_boundary.rs feat(pdftract-h2s0z): implement adaptive word boundary detector 2026-05-24 06:06:56 -04:00