Struct TextModel 

pub struct TextModel { /* private fields */ }

A Quarb adapter over a text-level document.

Implementations

impl TextModel

pub fn build(blocks: Vec<Block>) -> Self

Assemble the document tree from a producer’s event stream.

Iterative throughout (the stream is flat; prose flattening runs over indices), so pathological nesting cannot overflow the call stack. Lenient on malformed streams: a stray Close is ignored, unclosed containers close at the end.

pub fn parse_plain(text: &str) -> Self

Read plain text: blank-line-separated paragraphs, each collapsed to one line — the atramento paragraph rule. No headings, no markup.

pub fn locator(&self, node: NodeId) -> String

A locator path to node, like /section[2]/paragraph[3], for rendering. A [n] index is added only to disambiguate same-name siblings.

Trait Implementations

impl AstAdapter for TextModel

fn traits(&self, node: NodeId) -> Vec<String>

The <block> family on every block node, plus <table> on a list that denormalizes a table. Kinds are node names, not traits.

fn property(&self, node: NodeId, name: &str) -> Option<Value>

::lemma (title), ::hypograph (footer or attribution), ::taxis (ordinal), ::text (the flattened prose, same as the bare projection). The Greek anatomy — ::lemma, ::grammata, ::hypograph, ::taxis — plus the friendly aliases (::title, ::body, ::attribution, ::ord), answered here because this adapter’s property surface IS the vocabulary; on data adapters those spellings stay ordinary field names. The Greek is canon in docs and reflection preserves whichever spelling was written.

fn default_value(&self, node: NodeId) -> Option<Value>

The default projection is the flattened prose of the subtree — lemma first, hypograph last.

fn aliased_metadata(&self, _node: NodeId) -> &'static [&'static str]

Ruling #29: the text level’s surface is the vocabulary itself — no document can introduce a property name — so its two annotations answer at :: as well.

fn metadata(&self, node: NodeId, key: &str) -> Option<Value>

::::level on sections (the source heading level) and ::::lang on verbatim blocks (the declared language).

fn root(&self) -> NodeId

The root node — the initial navigation context.

fn children(&self, node: NodeId) -> Vec<NodeId>

The tree children of node, in document order.

fn name(&self, node: NodeId) -> Option<String>

The name of node — the label of its incoming tree edge.

fn parent(&self, node: NodeId) -> Option<NodeId>

The parent of node, or None for the root.

fn children_named(&self, node: NodeId, name: &str) -> Vec<NodeId>

The children of node whose edge name is exactly name — the engine’s fast path for name-matcher child hops. The default filters children; an adapter whose containers cannot be enumerated (permission-scoped or unbounded remote trees) overrides this with a direct, name-addressed lookup. Must be observationally identical to the default wherever enumeration works. The adapter owns the name test: it may deliberately alias — resolve a name to a node whose edge name differs (git revision syntax landing on a hash-named commit) — and the engine will not re-filter. Container-scoped resolution like that stays child-axis only; per-node spelling aliases belong in answers_to, which this default consults.

fn answers_to(&self, node: NodeId, name: &str) -> bool

Whether node answers to name as a literal spelling (ruling #30). The default is canonical equality. An adapter may declare per-node aliases — a social feed spelling a handle @alice while the stripped alice is the hop name — and the engine consults this wherever a literal name is matched, on every axis, so one override keeps /@alice and //@alice in agreement. :::name stays canonical (locators and reflection print it; an alias is a way in, never a way out), and name patterns (~(...), *) test the canonical name only.

fn links(&self, _node: NodeId) -> Vec<(String, NodeId)>

Outgoing crosslinks from node, as (label, target) pairs, for -> navigation (a filesystem adapter’s symlinks).

fn backlinks(&self, _node: NodeId) -> Vec<(String, NodeId)>

Incoming crosslinks to node, as (label, source) pairs, for <- navigation. May be expensive (an adapter that does not precompute edges must search for referrers).

fn resolve( &self, _node: NodeId, _property: &str, _hint: Option<&str>, ) -> Option<NodeId>

Resolve a cross-reference: ::property~>hint maps node’s property (a value that references another node) to its target, with an optional adapter-specific relation hint. A JSON adapter resolves a $ref JSON Pointer; None if unresolvable.

fn link_property( &self, _source: NodeId, _label: &str, _target: NodeId, _name: &str, ) -> Option<Value>

A property of the crosslink source --label--> target — the $-::prop read. Adapters whose edges carry data (a property graph’s relationship properties) override this; None if the edge is bare or unknown. Where parallel edges share source, label, and target, the adapter answers for one of them, consistently.

fn quantifier_bound(&self) -> usize

The quantifier bound N_max: the depth to which open-ended path quantifiers (+, *, {m,}) expand, and the ceiling of any explicit {m,n} (the effective upper bound is min(n, N_max)). An adapter whose natural structures run deep may raise it; the CLI overrides it per run (qua --quantifier-bound).

fn allow_shell(&self) -> bool

Whether the sh(...) pipeline stage may run external commands. False by default — query text stays inert data — and enabled per run by the CLI (qua --allow-shell) through the AllowShell wrapper.

fn invocation_instant(&self) -> Option<(i64, u32)>

The invocation instant now() denotes (spec: The Temporal Fragment, Determinism): one UTC timeline point bound by the runner BEFORE evaluation begins — evaluation itself never reads a clock. None by default (a library run is fully deterministic; now() reads as null); the CLI binds it at startup — pinnable with qua --now — through the WithNow wrapper.

fn provenance(&self, _node: NodeId) -> Provenance

The data provenance of node — the :::source / :::instant / :::dpid / :::provenance core-metadata keys. Empty by default: an adapter answers only the components its substrate genuinely records (never the invocation clock); wrapper adapters fill missing components from what they know — the mount its target, a graft its outer leaf, a model its derivation — and forward the rest inward, so resolution is nearest-ancestor per component.

fn unit_scale(&self, expr: &str) -> Option<(f64, String)>

The scale of a unit expression — (factor, canonical SI-base expansion) — for the unital reading’s criterion text (spec: The Quantital Fragment). The default answers from the engine’s frozen built-in table; a unit-aware adapter (kaiv) overrides it to include the mounted document’s own custom units, so [::range < '50kellicam'] resolves through the document’s .!units imports.