Ryth Azhur
3aafec6dd4
The IR called them react-message and django-message, so a FastAPI channel had to declare a DjangoMessage. They are client-message and server-message now, and the direction words hold wherever a channel is declared: Params / ClientMessage / ServerMessage, with mizan-core deriving <Pascal>Params and friends so no backend names a type itself. Django's ReactChannel and FastAPI's ReactChannel are both Channel. mizan-fastapi never registered a channels extension, so build_ir() emitted no channel at all and every payload type was invisible to codegen. It registers one now. RegistryExtension is an ABC requiring all(), which is what the IR reads — an extension that cannot enumerate its registrations no longer exists. The gate that should have caught the rename could not: tests/afi registered no channel because mizan-rust had no channel registry to register one in, so a five-package rename of the wire contract passed byte-parity without a channel byte crossing it. mizan-rust grows ChannelSlotKind, a CHANNELS slice, a #[mizan::channel] macro, and KDL emission whose wire_to_pascal matches Python's split; the AFI fixture now carries a channel with every slot and one with a single slot, so all three backends prove the contract byte for byte. MizanChannel held three Option<String> beside three has_*() predicates and unwrapped them with defaults; it holds an ordered slot vector, so an absent slot is absent rather than defaulted. The channels target emitted a React hooks file that a stage1-only consumer could not compile — react emits that now. The codegen's parity tests byte-compared emitted source against baselines without ever compiling it: they compile the generated crate and run its tests, import the generated Python package and call every method, and typecheck each TypeScript target against a consumer. Also fixed at source: app_visitor printed its import diagnostic to stdout, the stream export_mizan_ir writes KDL to, so a failed import silently corrupted the IR; the apps root was hardcoded to "apps"; _default_literal crashed build_ir on any non-JSON-serializable field default; Django and mizan-core derived Pascal names two different ways, disagreeing on every dotted channel name. ir.py builds a document and renders templates/ir/document.kdl.j2 rather than appending KDL strings with hand-tracked indentation, and named types resolve to a fixed point — a model reachable only through a union branch was referenced by a ref that no type block ever defined. The rest is the write-gate's own classifiers run over the standing tree: relative imports, silent swallows, Protocol contracts that should be ABCs, emitters hand-rendering target source, catch-all arms over closed enums, and comments narrating the project rather than the code. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
36 lines
1.3 KiB
Django/Jinja
36 lines
1.3 KiB
Django/Jinja
use serde::{Deserialize, Serialize};
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use mizan_rust::{MizanClient, MizanError};
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{% if !type_imports.is_empty() -%}
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use crate::types::{ {{- type_imports|join(", ") -}} };
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{% endif -%}
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#[derive(Debug, Clone, Serialize, Deserialize)]
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pub struct {{ pascal }}ContextData {
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{% for field in data_fields -%}
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{% if field.has_rename %} #[serde(rename = "{{ field.wire_name }}")]
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{% endif %} pub {{ field.ident }}: {% if field.optional %}Option<{{ field.ty }}>{% else %}{{ field.ty }}{% endif %},
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{% endfor -%}
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}
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#[derive(Debug, Clone, Serialize, Deserialize)]
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pub struct {{ pascal }}ContextParams {
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{% for p in params -%}
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{% if p.has_rename %} #[serde(rename = "{{ p.wire_name }}")]
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{% endif %} pub {{ p.ident }}: {% if p.optional %}Option<{{ p.ty }}>{% else %}{{ p.ty }}{% endif %},
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{% endfor -%}
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}
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pub async fn fetch_{{ snake }}_context(
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client: &MizanClient,
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params: &{{ pascal }}ContextParams,
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) -> Result<{{ pascal }}ContextData, MizanError> {
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let params_value = serde_json::to_value(params)
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.map_err(|e| MizanError::transport(format!("encode {{ ctx_name }} context params: {e}")))?;
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let raw = client.fetch_context("{{ ctx_name }}", ¶ms_value).await?;
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serde_json::from_value(raw)
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.map_err(|e| MizanError::transport(format!("decode {{ ctx_name }} context: {e}")))
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}
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