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Grzegorz MartensandClaude Opus 5.5
cf26980471
Review of the walk's read of a form's `/Matrix`. Removing hidden layers alone never asks where content lands, but a form whose `/Matrix` isn't six numbers was counted in its scan and refused, in a document without layers too. Such a form is now walked as it stands there; Apply Redactions, and Remove Hidden Information with hidden text, which tells hidden text by where it lands, still refuse it. `matrix_of` resolved and copied every entry before checking there were six, and the walk reads it at every `Do`. Measured in review (debug build), 20,000 draws of a form whose `/Matrix` is 20,000 entries long took 9 s by reference (16 ms before the walk read entries) and 12 s written directly (2.6 s before, the array being copied by `resolve`). It now reads an array written directly in place, and checks the length before resolving any entry. Tests: `a_form_whose_matrix_is_not_six_numbers_leaves_removing_hidden_layers_alone`, and `tests/matrix_work.rs` (a binary of its own), whose `a_long_form_matrix_costs_no_more_than_a_short_one` times 4,000 draws of a form with a 4,000-entry `/Matrix` against a 7-entry one, written directly and by reference. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AmsdeUCdTaD72jkDw2pJKY