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diff --git a/src/interp/binary-reader-metadata.h b/src/interp/binary-reader-metadata.h
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+/*
+ * Copyright 2020 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 WABT_BINARY_READER_METADATA_H_
+#define WABT_BINARY_READER_METADATA_H_
+
+#include "src/common.h"
+#include "src/error.h"
+
+namespace wabt {
+
+namespace interp {
+
+struct ModuleMetadata;
+
+}  // namespace interp
+
+struct ReadBinaryOptions;
+
+// Reads just the binary metadata, used by C-API to get module imports names
+// (and potentially other metadata) before instantiation time.
+Result ReadBinaryMetadata(const void* data,
+                          size_t size,
+                          const ReadBinaryOptions& options,
+                          Errors*,
+                          interp::ModuleMetadata** out_metadata);
+
+}  // namespace wabt
+
+#endif /* WABT_BINARY_READER_METADATA_H_ */