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+/*
+ * Copyright 2021 WebAssembly Community Group participants
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef wasm_ir_element_h
+#define wasm_ir_element_h
+
+#include "wasm-builder.h"
+#include "wasm.h"
+
+namespace wasm {
+
+namespace ElementUtils {
+
+// iterate over functions referenced in an element segment
+template<typename T>
+inline void iterElementSegmentFunctionNames(ElementSegment* segment,
+ T visitor) {
+ // TODO(reference-types): return early if segment type is non-funcref
+ for (Index i = 0; i < segment->data.size(); i++) {
+ if (auto* get = segment->data[i]->dynCast<RefFunc>()) {
+ visitor(get->func, i);
+ }
+ }
+}
+
+// iterate over functions referenced in all element segments of a module
+template<typename T>
+inline void iterAllElementFunctionNames(const Module* wasm, T visitor) {
+ for (auto& segment : wasm->elementSegments) {
+ iterElementSegmentFunctionNames(
+ segment.get(), [&](Name& name, Index i) { visitor(name); });
+ }
+}
+
+} // namespace ElementUtils
+
+} // namespace wasm
+
+#endif // wasm_ir_element_h