A self-describing Value node (null/int/fixed/bool/str/list/object) with constructors, builders (Value.add/put) and accessors (get/at/count/kind/ as_int/as_str/…). Reflect.serialize(entity) walks an entity's whole component set into a value tree — one member per component, each a sub-object of its fields — and Reflect.apply(entity, value) writes one back; a fixed field becomes a fixed node, everything else an int node, so the round-trip is bit-exact, with the model id under "@kind". Json.encode/parse bridge the tree to and from compact, stable, diffable text, with fixed written as an exact terminating decimal that parses back bit-for-bit (verified across the raw Q16.16 range). Together: a one-call, bit-exact save/load for entities. Written in Ludic and spliced on demand (runtime/native/value.ludic + reflect_io.ludic, like Query/Light), so a program that doesn't touch Value.*/Json.*/Reflect.serialize compiles byte-identically and the C-free bootstrap fixpoint holds (verified). The general tagged-union/any language type stays tracked in #1; this ships the concrete value tree the serializer needs. Adds 21 namespace-method docs pages + Value/Json sections, examples/library/serialize.ludic, and a regression case. Whole CI set green: x test 72/72, x test-tools 30/30, check-impl/vocabulary/docs. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
14 lines
498 B
Markdown
14 lines
498 B
Markdown
---
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id: value-null
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name: Value.null
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category: value
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kind: namespace-method
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tokens: Value.null
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sig: Value.null() -> value
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tip: An empty null node.
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order: 1
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ns: Value
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member: null
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---
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Builds a <code>null</code> node — the absent value. <a href="value-get"><code>Value.get</code></a> and <a href="value-at"><code>Value.at</code></a> return one for a missing key or out-of-range index, so a reader never faults on absent data. Its <a href="value-kind"><code>Value.kind</code></a> is <code>0</code>.
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