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Update Program.udpate to hot-swap

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This commit is contained in:
Yura Dupyn 2026-02-18 01:33:46 +01:00
parent 49ef33f113
commit f66b87708d
1 changed files with 5 additions and 11 deletions
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16
src/lang/program.ts
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@ -3,7 +3,7 @@ import { Env, Value } from "./eval/value";
import { Expr, FunctionName, SignalName, ProductPattern, SignalExpr } from "./expr"; import { Expr, FunctionName, SignalName, ProductPattern, SignalExpr } from "./expr";
import { installPrimitives } from "./primitive"; import { installPrimitives } from "./primitive";
import { eval_expr } from "./eval/evaluator"; import { eval_expr } from "./eval/evaluator";
import { eval_signal_expression, spawnTick, spawnSignal, SignalRuntime, getNode, spawnSource } from "./eval/signalValue" import { eval_signal_expression, spawnTick, spawnSignal, SignalRuntime, getNode, spawnSource, hotSwapSignal } from "./eval/signalValue"
export type Timestamp = number; export type Timestamp = number;
@ -350,7 +350,7 @@ export namespace Program {
program.signal_definitions.set(name, { tag: "user", def: newSignal }); program.signal_definitions.set(name, { tag: "user", def: newSignal });
program.signal_definition_order.push(name); program.signal_definition_order.push(name);
// TODO: Note that this doesn't actually evaluate the signal and doesn't insert it into signal-runtime. // Note that this doesn't actually evaluate the signal and doesn't insert it into signal-runtime.
// For that we will use `get_or_create_signal` // For that we will use `get_or_create_signal`
return Result.ok(name); return Result.ok(name);
@ -385,15 +385,9 @@ export namespace Program {
def.raw_body = raw_body; def.raw_body = raw_body;
def.lastModifiedAt = Date.now(); def.lastModifiedAt = Date.now();
// TODO: When to recompile? if (def.signalId !== undefined) {
// 2. CRITICAL: Invalidate the Runtime Cache hotSwapSignal(program, def.signalId, body);
// We clear the ID so the next 'read' forces a re-compile. }
// Note: This does NOT automatically update other signals that
// are currently holding a reference to the *old* signal ID.
// That requires a more complex hot-reload strategy, but this
// is the correct first step.
def.signalId = undefined;
def.is_initializing = false;
return Result.ok(undefined); return Result.ok(undefined);
} }