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feat(reflect): generic value tree + Reflect.serialize/apply + JSON bridge (#44)
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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>
This commit is contained in:
Orkun ÇAKILKAYA 2026-08-31 15:19:21 +03:00
parent 0d1b09e4f0
commit 9452557f3c
31 changed files with 16753 additions and 14898 deletions
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14
docs/language/reflect/reflect-apply.md Normal file
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---
id: reflect-apply
name: Reflect.apply
category: reflect
kind: namespace-method
tokens: Reflect.apply
sig: Reflect.apply(entity, value) -> int
tip: Write a value tree's fields back into an entity.
order: 14
ns: Reflect
member: apply
---
The inverse of <a href="reflect-serialize"><code>Reflect.serialize</code></a>: writes the fields of a value-tree <code>value</code> back into a live <code>entity</code>, and returns how many were set. Only components the entity already has and fields the schema knows are applied; reserved <code>"@"</code>-keys (like <code>"@kind"</code>) and unknown names are skipped, so a partial or older save loads cleanly. Feed it the output of <a href="json-parse"><code>Json.parse</code></a> to load a save.