--- title: "wikt-page-text-command-xml-page — Mova code model" description: "Mova code model of tools/wikt-page/src/main.rs: components with their labels, obernants and the model text." url: "https://groupants.elamur.ai/free/en/mova/tools/wikt-page/src/main.rs.groupant/xml-page.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: # wikt-page-text-command-xml-page The groupant beside tools/wikt-page/src/main.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_fragment - **status:** partial source bound model - **source:** [`tools/wikt-page/src/main.rs`](https://github.com/ElamurAI/mova-free/blob/main/tools/wikt-page/src/main.rs) - **source SHA-256:** `49d0a8b4e3c68dd2…` - **covers:** Event reader resets state on page start, marks revision start, reads title/ns/first ids, returns matching text or matching empty text. EOF returns None; XML/read_text/entity errors propagate. (bytes 4705–6390) - **part of:** [wikt-page-text-command](https://md.groupants.elamur.ai/free/en/mova/tools/wikt-page/src/main.rs.groupant/) - **repository folder:** [`tools/wikt-page/src/main.rs.groupant/xml-page.groupant`](https://github.com/ElamurAI/mova-free/tree/main/tools/wikt-page/src/main.rs.groupant/xml-page.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` | | **cost** | symbolic source derived | [invariant-and-cost](#invariant-and-cost) | | **descriptant** | present | [descriptant](#descriptant) | | **invariant** | partial | [invariant-and-cost](#invariant-and-cost) | | **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 | |---|---|---|---| | `wikt-page-text-command-xml-page-behavior_complement` | behavior_complement | partial source derived model | [behavior_complement](#behavior-complement) | | `wikt-page-text-command-xml-page-reverse_reconstruction` | reverse_reconstruction | partial source derived model | [reverse_reconstruction](#reverse-reconstruction) | | `wikt-page-text-command-xml-page-page_reset` | page_reset | partial source derived model | [page_reset](#page-reset) | | `wikt-page-text-command-xml-page-id_first_write` | id_first_write | partial source derived model | [id_first_write](#id-first-write) | | `wikt-page-text-command-xml-page-empty_text_return` | empty_text_return | partial source derived model | [empty_text_return](#empty-text-return) | | `wikt-page-text-command-xml-page-early_return_scope` | early_return_scope | partial source derived model | [early_return_scope](#early-return-scope) | ## Model text ### descriptant #### wikt-page-text-command-xml-page ##### Epoch 2026-10-31 Full source read preceded changes. Prospective model predicted branch/order, resource and information-loss behavior. Tests exercise actual helpers on bounded synthetic inputs; command workflows remain unexecuted. Production source prefix is preserved; only inline tests added. Event reader resets state on page start, marks revision start, reads title/ns/first ids, returns matching text or matching empty text. EOF returns None; XML/read_text/entity errors propagate. Executable percentage approximation is unsupported: categorical parsing/effects have no useful certified metric here. Partial syntax excludes macro expansion and name resolution. ### approximant #### Forward relation Event reader resets state on page start, marks revision start, reads title/ns/first ids, returns matching text or matching empty text. EOF returns None; XML/read_text/entity errors propagate. ##### Domain UTF-8 rootless XML fragments, quick_xml configured check_end_names=false; tests exercise entities/ids/empty element only. ### models ## Typed source models All models are partial source-derived relations at this manifest snapshot. Scope is one call/trace under the stated domain; no universal semantic proof. ### behavior_complement Later contributor id cannot overwrite already filled rev; wrong title text cannot produce Some; EOF without matching text returns None. Domain: UTF-8 rootless XML fragments, quick_xml configured check_end_names=false; tests exercise entities/ids/empty element only. Observation: Page state belongs to latest page start; title equality exact after entity decoding. Returning text does not validate remaining XML. Revision flag does not reset at revision end. Assumptions: bounded resources and source branch semantics. Oracle: selected actual-helper tests in tests.md constrain only their finite fixtures; remaining branches are source-derived. ### reverse_reconstruction Returned Page constrains decoded selected fields only; compatible XML can differ in escapes, order of ignored metadata and content after return. Domain: UTF-8 rootless XML fragments, quick_xml configured check_end_names=false; tests exercise entities/ids/empty element only. Observation: Page state belongs to latest page start; title equality exact after entity decoding. Returning text does not validate remaining XML. Revision flag does not reset at revision end. Assumptions: bounded resources and source branch semantics. Oracle: selected actual-helper tests in tests.md constrain only their finite fixtures; remaining branches are source-derived. ### page_reset Start page clears title/in_rev and every Page field, preventing prior-page id/text carryover. Domain: UTF-8 rootless XML fragments, quick_xml configured check_end_names=false; tests exercise entities/ids/empty element only. Observation: Page state belongs to latest page start; title equality exact after entity decoding. Returning text does not validate remaining XML. Revision flag does not reset at revision end. Assumptions: bounded resources and source branch semantics. Oracle: selected actual-helper tests in tests.md constrain only their finite fixtures; remaining branches are source-derived. ### id_first_write id writes only empty destination, chosen by in_rev. Empty id content leaves slot empty for later id. Domain: UTF-8 rootless XML fragments, quick_xml configured check_end_names=false; tests exercise entities/ids/empty element only. Observation: Page state belongs to latest page start; title equality exact after entity decoding. Returning text does not validate remaining XML. Revision flag does not reset at revision end. Assumptions: bounded resources and source branch semantics. Oracle: selected actual-helper tests in tests.md constrain only their finite fixtures; remaining branches are source-derived. ### empty_text_return Empty text event with matching title returns current Page with empty text; nonmatching empty events ignored. Domain: UTF-8 rootless XML fragments, quick_xml configured check_end_names=false; tests exercise entities/ids/empty element only. Observation: Page state belongs to latest page start; title equality exact after entity decoding. Returning text does not validate remaining XML. Revision flag does not reset at revision end. Assumptions: bounded resources and source branch semantics. Oracle: selected actual-helper tests in tests.md constrain only their finite fixtures; remaining branches are source-derived. ### early_return_scope Return on matching text occurs before closing page/revision; malformed trailing chunk may remain unobserved. Domain: UTF-8 rootless XML fragments, quick_xml configured check_end_names=false; tests exercise entities/ids/empty element only. Observation: Page state belongs to latest page start; title equality exact after entity decoding. Returning text does not validate remaining XML. Revision flag does not reset at revision end. Assumptions: bounded resources and source branch semantics. Oracle: selected actual-helper tests in tests.md constrain only their finite fixtures; remaining branches are source-derived. ### tests #### Evidence Selected exact tests: ["wave33::xml_ids_text_and_empty_page"]. Each runs twice in debug and twice in release with normalized named outcomes compared. Compiled production-boundary mutants are recorded in the external wave33 text receipts with original/restored hashes and positive reruns. Existing negative assertions are separate from compiled mutants. No CLI, download, teacher, corpus or model execution. For this fragment, source-derived paths not reached by these tests remain unverified. ### invariant-and-cost #### Invariant and cost ##### Invariant Page state belongs to latest page start; title equality exact after entity decoding. Returning text does not validate remaining XML. Revision flag does not reset at revision end. ##### Cost O(chunk bytes until matching text), output and parser string allocations proportional to consumed fields; entire chunk already materialized. Arithmetic and allocation premises are conditional. No timing or percentage surrogate claimed.