refactor(codemode): split runtime into focused interpreter modules (#36540)

packages/codemode/src/interpreter/references.ts

@@ -0,0 +1,99 @@
+import {
+  type AstNode,
+  CodeModeFunction,
+  CoercionFunction,
+  ErrorConstructorReference,
+  GlobalMethodReference,
+  GlobalNamespace,
+  InterpreterRuntimeError,
+  IntrinsicReference,
+  PromiseCapabilityFunction,
+  PromiseInstanceMethodReference,
+  PromiseMethodReference,
+  PromiseNamespace,
+  SearchFunction,
+  UriFunction,
+} from "./model.js"
+import { ToolReference } from "../tool-runtime.js"
+import { isSandboxValue, SandboxPromise } from "../values.js"
+
+export const isRuntimeReference = (value: unknown): boolean =>
+  value instanceof CodeModeFunction ||
+  value instanceof ToolReference ||
+  value instanceof IntrinsicReference ||
+  value instanceof GlobalNamespace ||
+  value instanceof GlobalMethodReference ||
+  value instanceof PromiseNamespace ||
+  value instanceof PromiseMethodReference ||
+  value instanceof PromiseInstanceMethodReference ||
+  value instanceof SandboxPromise ||
+  value instanceof CoercionFunction ||
+  value instanceof UriFunction ||
+  value instanceof SearchFunction ||
+  value instanceof PromiseCapabilityFunction ||
+  value instanceof ErrorConstructorReference ||
+  isSandboxValue(value)
+
+export const containsRuntimeReference = (value: unknown, seen = new Set<object>()): boolean => {
+  if (isRuntimeReference(value)) return true
+  if (value === null || typeof value !== "object") return false
+  if (seen.has(value)) return false
+  seen.add(value)
+  const contains = Array.isArray(value)
+    ? value.some((item) => containsRuntimeReference(item, seen))
+    : Object.values(value).some((item) => containsRuntimeReference(item, seen))
+  seen.delete(value)
+  return contains
+}
+
+// Sandbox values are data here, not opaque interpreter references.
+export const containsOpaqueReference = (value: unknown, seen = new Set<object>()): boolean => {
+  if (isSandboxValue(value)) return false
+  if (isRuntimeReference(value)) return true
+  if (value === null || typeof value !== "object") return false
+  if (seen.has(value)) return false
+  seen.add(value)
+  const contains = Array.isArray(value)
+    ? value.some((item) => containsOpaqueReference(item, seen))
+    : Object.values(value).some((item) => containsOpaqueReference(item, seen))
+  seen.delete(value)
+  return contains
+}
+
+// Reject cycles before mutation so later boundary walks remain safe.
+export const rejectCircularInsertion = (
+  container: object,
+  value: unknown,
+  label: string,
+  node: AstNode,
+  seen = new Set<object>(),
+): void => {
+  if (value === container)
+    throw new InterpreterRuntimeError(`${label} contains a circular value.`, node, "InvalidDataValue")
+  if (value === null || typeof value !== "object" || isRuntimeReference(value) || seen.has(value)) return
+  seen.add(value)
+  const items = Array.isArray(value) ? value : Object.values(value)
+  for (const item of items) rejectCircularInsertion(container, item, label, node, seen)
+  seen.delete(value)
+}
+
+export const typeofValue = (value: unknown): string => {
+  if (
+    value instanceof CodeModeFunction ||
+    value instanceof CoercionFunction ||
+    value instanceof IntrinsicReference ||
+    value instanceof GlobalMethodReference ||
+    value instanceof PromiseMethodReference ||
+    value instanceof PromiseInstanceMethodReference ||
+    value instanceof PromiseNamespace ||
+    value instanceof PromiseCapabilityFunction ||
+    value instanceof ErrorConstructorReference
+  )
+    return "function"
+  if (value instanceof UriFunction || value instanceof SearchFunction) return "function"
+  if (value instanceof ToolReference) return value.path.length > 0 ? "function" : "object"
+  if (value instanceof GlobalNamespace) {
+    return value.name === "Math" || value.name === "JSON" || value.name === "console" ? "object" : "function"
+  }
+  return typeof value
+}