Brummel
b8b83cf1c9
#164 — tighten the C24 "canonical, versioned" blueprint contract on two corners the milestone fieldtest surfaced. Both forks were derivable; resolved with rationale (recorded on #164). Fork 1 — canonical artifact carries no trailing newline. `blueprint_to_json` returns the JSON value with no trailing newline (647 bytes for the SMA-cross fixture); `aura graph build` had framed it with a `println!` (648). The library serializer is the single canonical source — the form content-addressed topology identity (#158) hashes — so the CLI is a transport that must not mutate the bytes: `build_cmd` now `print!`s the canonical bytes verbatim, making the CLI and library emit paths byte-identical. RED-first: the new E2E `graph_build_emit_is_byte_canonical_no_trailing_newline` pinned the trailing newline (FAIL), green after the one-line change. The two cycle-0088 `.out.json` goldens are re-recorded at 647 bytes. The loader stays lenient (a trailing newline on input still parses, Tier-1 robustness; the milestone fieldtest's `mt_4` tolerance check is unaffected). Fork 2 — the canonical JSON is the blueprint equality/identity surface; no second in-memory PartialEq/Debug is added. `Composite`/`BlueprintNode` cannot derive them: `PrimitiveBuilder` (aura-core node.rs) holds a `build: Box<dyn Fn(&[Cell]) -> Box<dyn Node>>` closure, neither comparable nor printable. Equality could only be defined over the serialized data, of which `blueprint_to_json` is already the single source; a separate in-memory equality notion would be a redundant second source of truth and a drift hazard against the form #158 hashes. Recorded the decision (discharges acceptance box 2's "or JSON-string is the intended equality surface" arm) in the C24 ledger; no code added for it. Verified: cargo test --workspace green (51 suites, incl. the new RED->green E2E); cargo clippy --workspace --all-targets -D warnings clean. closes #164
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647 B
JSON
1 line
647 B
JSON
{"format_version":1,"blueprint":{"name":"graph","nodes":[{"primitive":{"type":"SMA","name":"fast","bound":[{"pos":0,"name":"length","kind":"I64","value":{"I64":3}}]}},{"primitive":{"type":"SMA","name":"slow","bound":[{"pos":0,"name":"length","kind":"I64","value":{"I64":8}}]}},{"primitive":{"type":"Sub","name":"sub"}},{"primitive":{"type":"Bias","name":"bias"}}],"edges":[{"from":0,"to":2,"slot":0,"from_field":0},{"from":1,"to":2,"slot":1,"from_field":0},{"from":2,"to":3,"slot":0,"from_field":0}],"input_roles":[{"name":"price","targets":[{"node":0,"slot":0},{"node":1,"slot":0}],"source":"F64"}],"output":[{"node":3,"field":0,"name":"bias"}]}} |