0hmX/am3352

scripts/replace-ddr-host-route.ts

/** Isolated host-geometry alternative. Exact terminals, vias, net identities and
 * reference planes stay fixed; complete combined copper is rechecked. */
import {readFileSync,writeFileSync,mkdirSync} from 'node:fs'
import {resolve} from 'node:path'
import {createHash} from 'node:crypto'
import {verifyDdrCapture} from './ddr-capture-provenance'
import {verifyDdrSystemCopper} from './check-ddr-system-copper'
const [capture,integrated,donorPath,connectionName,out]=process.argv.slice(2)
if(!capture||!integrated||!donorPath||!connectionName||!out)throw Error('Usage: capture integrated-dir donor-bundle connection-name output-dir')
const read=(p:string)=>JSON.parse(readFileSync(p,'utf8')),hash=(x:any)=>createHash('sha256').update(JSON.stringify(x)).digest('hex')
const {captureHash}=verifyDdrCapture(capture),circuit=read(resolve(integrated,'candidate.circuit.json')),host=read(resolve(integrated,'host-bundle.json')),report=read(resolve(integrated,'report.json')),donor=read(donorPath),connections=read(resolve(capture,'routing-input.json')).connections
if([host,report,donor].some(x=>x.captureHash!==captureHash)||host.layerSpace!=='physical'||donor.layerSpace!=='physical'||report.hostTracesSha256!==hash(host.traces))throw Error('Mismatched candidate provenance')
const target=host.traces.filter((t:any)=>t.connection_name===connectionName),replacement=donor.traces.filter((t:any)=>t.connection_name===connectionName)
if(target.length!==1||replacement.length!==1)throw Error('Requires one complete trace per net')
const a=target[0],b=replacement[0],point=(p:any)=>[p.x,p.y,p.layer],vias=(t:any)=>t.route.filter((p:any)=>p.route_type==='via')
if(hash(point(a.route[0]))!==hash(point(b.route[0]))||hash(point(a.route.at(-1)))!==hash(point(b.route.at(-1)))||hash(vias(a))!==hash(vias(b)))throw Error('Replacement changes exact terminal or via contract')
const traces=host.traces.map((t:any)=>t===a?{...t,route:structuredClone(b.route)}:t),ids=new Set(host.traces.map((t:any)=>t.pcb_trace_id)),fixed=circuit.filter((e:any)=>!ids.has(e.pcb_trace_id))
const physical=verifyDdrSystemCopper(fixed,traces,connections,{})
if(physical.errors.length||physical.violations.length||!physical.angles.valid||physical.joinedBends.length||report.physical.connectivity.filter((c:any)=>c.connected).some((c:any)=>!physical.connectivity.some(n=>n.name===c.name&&n.connected)))throw Error('Alternative loses verified geometry or connectivity')
mkdirSync(out,{recursive:true})
writeFileSync(resolve(out,'candidate.circuit.json'),JSON.stringify([...fixed,...traces],null,2)+'\n')
writeFileSync(resolve(out,'host-bundle.json'),JSON.stringify({captureHash,layerSpace:'physical',traces},null,2)+'\n')
writeFileSync(resolve(out,'report.json'),JSON.stringify({...report,hostTracesSha256:hash(traces),physical,routeReplacement:{connectionName,parentHostSha256:hash(host.traces),donorBundleSha256:hash(donor)},scope:'Geometric routing alternative; byte tuning deliberately deferred until remaining data routes are placed.'},null,2)+'\n')
console.log(JSON.stringify({connected:physical.connectivity.filter(c=>c.connected).length,errors:physical.errors.length,violations:physical.violations.length}))