Fix getTableSegments argument and element-reference types

index.d.ts

@@ -1858,7 +1858,7 @@ declare namespace binaryen {
     addActiveElementSegment(table: string, name: string, funcNames: readonly string[], offset: ExpressionRef): ElementSegmentRef;
     addPassiveElementSegment(name: string, funcNames: readonly string[]): ElementSegmentRef;
     getElementSegment(name: string): ElementSegmentRef;
-    getTableSegments(table: string): string[];
+    getTableSegments(table: TableRef): ElementSegmentRef[];
     removeElementSegment(name: string): void;
     addTag(name: string, params: Type, results: Type): TagRef;
     getTag(name: string): TagRef;

package.json

@@ -27,7 +27,7 @@
   },
   "scripts": {
     "readme": "doctoc README.md --github --title \"### Contents\"",
-    "check": "tsc index.d.ts --noEmit --strict --noImplicitAny --strictNullChecks --listFiles --diagnostics",
+    "check": "tsc index.d.ts tests/table-segments.ts --noEmit --strict --noImplicitAny --strictNullChecks --listFiles --diagnostics",
     "test": "npm run check && node tests/sanity && node tests/example",
     "bundle": "node scripts/bundle.js"
   },

tests/sanity.js

@@ -66,3 +66,18 @@ assert(typeof js === "string" && js.length);
 console.log("wrapping an existing module");
 var wrapped = binaryen.wrapModule(mod.ptr);
 assert(wrapped.getFunction("main"));
+
+console.log("getting element references for a table");
+var tables = new binaryen.Module();
+tables.addFunction("answer", binaryen.none, binaryen.i32, [], tables.i32.const(42));
+var dispatch = tables.addTable("dispatch", 1, 1);
+tables.addTable("other", 1, 1);
+tables.addActiveElementSegment("dispatch", "matched", [ "answer" ], tables.i32.const(0));
+tables.addActiveElementSegment("other", "unrelated", [ "answer" ], tables.i32.const(0));
+var segments = tables.getTableSegments(dispatch);
+assert.deepStrictEqual(segments, [ tables.getElementSegment("matched") ]);
+var segmentInfo = binaryen.getElementSegmentInfo(segments[0]);
+assert.strictEqual(segmentInfo.name, "matched");
+assert.strictEqual(segmentInfo.table, "dispatch");
+assert.deepStrictEqual(segmentInfo.data, [ "answer" ]);
+tables.dispose();

tests/table-segments.ts

@@ -0,0 +1,17 @@
+import binaryen from "../index.js";
+
+const module = new binaryen.Module();
+const table = module.addTable("dispatch", 1, 1);
+const segments: binaryen.ElementSegmentRef[] = module.getTableSegments(table);
+const info = binaryen.getElementSegmentInfo(segments[0]);
+const segmentName: string = info.name;
+
+// A table name is not a table reference accepted by the runtime.
+// @ts-expect-error
+module.getTableSegments("dispatch");
+
+// Element references are not names accepted by getElementSegment.
+// @ts-expect-error
+const names: string[] = segments;
+
+module.dispose();