Ryth Azhur
43bcf3f26f
The Mizan codegen substrate moves off JavaScript template-literal emission
onto a compiled Rust binary that consumes the same OpenAPI + x-mizan-* IR
the JS substrate consumed. Three structural wins fall out of one move:
1. Moat closes. The codegen logic (how `affects` becomes auto-invalidation,
how named contexts collapse onto bundled fetches, how the registry-to-
Provider mapping is shaped) ships compiled instead of as source bytes
in every consumer's node_modules.
2. Pattern F (lines.push append-walls) becomes structurally unauthorable.
The emit substrate is askama templates in templates/<target>/*.j2 —
actual target-language files with {{ ... }} substitution markers,
syntax-highlighted natively, type-checked against the render context
structs at compile time. The Rust emit modules build typed render
contexts and call .render(); no string-builder surface exists.
3. OpenAPI `default`-bearing fields now emit as non-optional in TS / Python
/ Rust — the server always populates them, so consumer code reads them
without nullable checks. Surfaced by Blazr's typecheck on regeneration.
Layout:
frontends/mizan-rust/ — Rust port of @mizan/base; #[cfg(feature="pyo3")]
exposes PyMizanClient for the Python target.
protocol/mizan-codegen/ — codegen binary source + askama templates.
protocol/mizan-generate/ — npm-package shim. bin/launcher.mjs dispatches
to the platform-appropriate prebuilt binary.
Old generator/ JS tree deleted.
tests/rust/ — wire-parity drivers. drive_kernel exercises
raw client.call() / fetch_context(); drive_emitted
exercises the typed crate the codegen emits.
tests/afi/afi_codegen_app.py — codegen entrypoint module (imports + registers).
backends/mizan-fastapi/.../schema.py — adds outputNullable so the Rust
codegen can wrap T | None responses in Option<T>.
Verification:
- 20 mizan-codegen tests green (IR deserialization, byte-equivalent
parity vs JS baseline for stage1/rust/python/react/vue/svelte,
structural test for channels).
- tests/rust/run_wire_parity.py — 12/12 probes green via the Rust binary
driving the FastAPI fixture end-to-end.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
42 lines
1.4 KiB
JavaScript
Executable File
42 lines
1.4 KiB
JavaScript
Executable File
#!/usr/bin/env node
|
|
// Mizan codegen npm-package shim — dispatches to the platform-appropriate
|
|
// `mizan-generate` Rust binary in this directory. Source for the binary
|
|
// lives at `protocol/mizan-codegen/`; published releases ship one binary
|
|
// per supported platform.
|
|
|
|
import { spawn } from 'child_process'
|
|
import { fileURLToPath } from 'url'
|
|
import { dirname, join } from 'path'
|
|
import { existsSync } from 'fs'
|
|
import { platform, arch } from 'os'
|
|
|
|
const here = dirname(fileURLToPath(import.meta.url))
|
|
|
|
const platforms = {
|
|
'linux-x64': 'mizan-generate-linux-x64',
|
|
'darwin-arm64': 'mizan-generate-darwin-arm64',
|
|
'darwin-x64': 'mizan-generate-darwin-x64',
|
|
'win32-x64': 'mizan-generate-win32-x64.exe',
|
|
}
|
|
|
|
const key = `${platform()}-${arch()}`
|
|
const binName = platforms[key]
|
|
if (!binName) {
|
|
console.error(`[mizan-generate] no prebuilt binary for ${key}`)
|
|
process.exit(1)
|
|
}
|
|
|
|
const binPath = join(here, binName)
|
|
if (!existsSync(binPath)) {
|
|
console.error(`[mizan-generate] binary missing: ${binPath}`)
|
|
console.error('[mizan-generate] build from source: cargo build --release --manifest-path <mizan>/protocol/mizan-codegen/Cargo.toml')
|
|
process.exit(1)
|
|
}
|
|
|
|
const child = spawn(binPath, process.argv.slice(2), { stdio: 'inherit' })
|
|
child.on('exit', code => process.exit(code ?? 1))
|
|
child.on('error', err => {
|
|
console.error(`[mizan-generate] failed to spawn ${binPath}: ${err.message}`)
|
|
process.exit(1)
|
|
})
|