fix(managed): distinguish metadata handles from member accesses (#607)

Signed-off-by: Rudy Celekli <47457359+rudycelekli@users.noreply.github.com>

src/dotnet/ManagedMemberRows.ts

@@ -182,6 +182,7 @@ export const edges = (
   const fieldAccesses: ManagedFieldAccess[] = [];
   for (const method of methods) {
     for (const anchor of method.body.anchors) {
+      if (anchor.opcode === "ldtoken") continue;
       if (anchor.operand_kind === "method" && anchor.operand !== null) {
         const named =
           methodCore.get(anchor.operand)?.name ??

src/dotnet/ManagedMetadataHandles.test.ts

@@ -0,0 +1,27 @@
+import { expect, it } from "vitest";
+import { inspectManagedMembersBytes } from "./ManagedMemberInspector.js";
+import {
+  buildManagedPeFixture,
+  managedPeFixtureTarget,
+} from "./ManagedPe.fixture.js";
+
+it("retains metadata handles without reporting calls or field accesses", () => {
+  const il = Buffer.from([
+    0xd0, 0x01, 0, 0, 0x06, 0x26, 0xd0, 0x01, 0, 0, 0x04, 0x26, 0x28, 0x01, 0,
+    0, 0x0a, 0x7b, 0x01, 0, 0, 0x04, 0x26, 0x2a,
+  ]);
+  const bytes = buildManagedPeFixture({
+    ilBody: Buffer.concat([Buffer.from([(il.length << 2) | 2]), il]),
+  });
+  const result = inspectManagedMembersBytes(
+    bytes,
+    managedPeFixtureTarget(bytes),
+  );
+  expect(
+    result.methods[0]?.body.anchors.map((anchor) => anchor.opcode),
+  ).toEqual(["ldtoken", "ldtoken", "call", "ldfld"]);
+  expect(result.call_edges.map((edge) => edge.opcode)).toEqual(["call"]);
+  expect(result.field_accesses.map((access) => access.opcode)).toEqual([
+    "ldfld",
+  ]);
+});