--- title: "rt-mixed-tally — Mova code model" description: "Mova code model of tools/roundtrip/src/tally.rs: components with their labels, obernants and the model text." url: "https://groupants.elamur.ai/free/en/mova/tools/roundtrip/src/tally.rs.groupant/" --- Elamur: [Mova](https://md.mova.elamur.ai/free/en/) · [Dictionary](https://md.dictionary.elamur.ai/free/en/) · [Research](https://md.research.elamur.ai/free/en/) · **Groupants** This page as HTML: # rt-mixed-tally The groupant beside tools/roundtrip/src/tally.rs in the Mova repository: what the code computes, what it never does, how to go back from its outputs, its invariants, cost and checks. ## Facts - **kind:** groupant - **status:** partial source bound model - **source:** [`tools/roundtrip/src/tally.rs`](https://github.com/ElamurAI/mova-free/blob/main/tools/roundtrip/src/tally.rs) - **source SHA-256:** `c3382ca2a337994e…` - **repository folder:** [`tools/roundtrip/src/tally.rs.groupant`](https://github.com/ElamurAI/mova-free/tree/main/tools/roundtrip/src/tally.rs.groupant) - **repository commit:** `48f2e6f74146` > **Implementation material.** A Mova code model describes this code at one source revision: partial models, finite checks and their stated scope. It is not a reviewed general exposition, and its labels are shown as written, never raised. ## Components | component | label | where | |---|---|---| | **approximant** | partial | [approximant](#approximant) | | **ast** | partial | `syntax.json` | | **composition** | partial | [composition](#composition) | | **cost** | symbolic source derived | [invariant](#invariant) | | **descriptant** | present | [descriptant](#descriptant) | | **invariant** | partial | [invariant](#invariant) | | **tests** | executed bounded checks | [tests](#tests) | ## Obernants The typed relations around the forward model: the behaviour complement (what the code never does), the reverse reconstruction (every input compatible with an output) and specialised views. | id | type | label | where | |---|---|---|---| | `behavior_complement` | behavior_complement | partial source derived model | [behavior_complement](#behavior-complement) | | `reverse_reconstruction` | reverse_reconstruction | partial source derived model | [reverse_reconstruction](#reverse-reconstruction) | | `lazy_cap` | lazy_cap | partial source derived model | [lazy_cap](#lazy-cap) | | `merge_order` | merge_order | partial source derived model | [merge_order](#merge-order) | | `kind_projection` | kind_projection | partial source derived model | [kind_projection](#kind-projection) | | `separate_starts` | separate_starts | partial source derived model | [separate_starts](#separate-starts) | ## Parts - [rt-mixed-tally-cell](https://md.groupants.elamur.ai/free/en/mova/tools/roundtrip/src/tally.rs.groupant/cell.groupant/) ## Model text ### descriptant #### Descriptant ##### Prospective epoch 2026-10-31 source review predicted: Cell.add increments items/bits and keeps first4 examples. Residual.add lazily evaluates example only below cap; add_k adds kind count/bits. Merge adds all scalar/maps in fixed order and concatenates bounded example prefixes. Tally normal/whole remain separate Start maps. Resource model: Merge O(entries log destination keys + kind maps + bounded cloned examples); retained examples <=4 for normal constructed states, source oversized vectors scanned fully. External prospective.md predates test additions and preserves APIs, effect order, hazards and interaction hypotheses. ##### Observed epoch Bounded real helper checks in tests.md constrain these models; syntax is a partial lexical projection with no macro expansion, name resolution or proof. Production expressions unchanged; six inline test modules added. Compiled mutants are temporary and exactly restored. Existing malformed-input and nonfinite domains remain explicit, not silently repaired. Parent composes this scope with siblings without adding overlapping costs twice. Finite synthetic helper evidence only; live corpora, parser/model loading, full orchestration and filesystem failure races excluded. ### approximant #### Forward relation Cell.add increments items/bits and keeps first4 examples. Residual.add lazily evaluates example only below cap; add_k adds kind count/bits. Merge adds all scalar/maps in fixed order and concatenates bounded example prefixes. Tally normal/whole remain separate Start maps. Domain: Counts fit u64; finite floating metrics for mathematical additivity; f64 rounding means merge regrouping is not exact associativity. Input public fields can violate semantic inequalities. ### invariant #### Invariant and cost ##### Invariant Counts fit u64; finite floating metrics for mathematical additivity; f64 rounding means merge regrouping is not exact associativity. Input public fields can violate semantic inequalities. ##### Cost Merge O(entries log destination keys + kind maps + bounded cloned examples); retained examples <=4 for normal constructed states, source oversized vectors scanned fully. ##### Limits Finite synthetic helper evidence only; live corpora, parser/model loading, full orchestration and filesystem failure races excluded. No percentage surrogate is implemented: categorical parsing/effect observations lack an admitted numerical error metric. Any future profile must define its metric/domain and use only1/2/5/10 percent caps. ### composition #### Local composition Cell.add increments items/bits and keeps first4 examples. Residual.add lazily evaluates example only below cap; add_k adds kind count/bits. Merge adds all scalar/maps in fixed order and concatenates bounded example prefixes. Tally normal/whole remain separate Start maps. Children select narrow source functions with their exact byte intervals. Remaining branches stay in the file model; fragments are not exhaustive partitions. Calls and state joins follow the forward relation, not folder order. Shared scans/helpers are counted once in whole-file costs. Complement of composition is not union of complements; reverse composition retains compatible intermediates and caller premises. ### models ## Typed source-bound relations Subject: exact source SHA-256 in manifest. Domain and resource premises are in invariant.md. Each model is partial, source-derived, over a single helper invocation or the described finite trace. Complements are proposed inner exclusions under those premises; reverse relations retain all compatible antecedents, with no unique inverse claim. The oracle is the named checks in tests.md; unexecuted cases remain hypotheses. No numerical approximation certificate. ### behavior_complement Excluded: fifth normal add evaluates closure or preserves example; overflow/nonfinite values are validated. No validation exists for public fields. ### reverse_reconstruction Aggregates admit many ordered event histories; first4 examples constrain prefix only, counts/kinds constrain sums; merge cannot uniquely undo prior totals. ### lazy_cap Example closure runs only while destination examples.len()