1 files changed, 54 insertions, 0 deletions
diff --git a/src/wasm-binding-hash.h b/src/wasm-binding-hash.h
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+++ b/src/wasm-binding-hash.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2016 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_BINDING_HASH_H_
+#define WASM_BINDING_HASH_H_
+
+#include "wasm-common.h"
+#include "wasm-vector.h"
+
+struct WasmAllocator;
+
+typedef struct WasmBinding {
+  WasmLocation loc;
+  WasmStringSlice name;
+  int index;
+} WasmBinding;
+
+typedef struct WasmBindingHashEntry {
+  WasmBinding binding;
+  struct WasmBindingHashEntry* next;
+  struct WasmBindingHashEntry* prev; /* only valid when this entry is unused */
+} WasmBindingHashEntry;
+WASM_DEFINE_VECTOR(binding_hash_entry, WasmBindingHashEntry);
+
+typedef struct WasmBindingHash {
+  WasmBindingHashEntryVector entries;
+  WasmBindingHashEntry* free_head;
+} WasmBindingHash;
+
+WASM_EXTERN_C_BEGIN
+WasmBinding* wasm_insert_binding(struct WasmAllocator*,
+                                 WasmBindingHash*,
+                                 const WasmStringSlice*);
+WasmBool wasm_hash_entry_is_free(const WasmBindingHashEntry*);
+/* returns -1 if the name is not in the hash */
+int wasm_find_binding_index_by_name(const WasmBindingHash*,
+                                    const WasmStringSlice* name);
+void wasm_destroy_binding_hash(struct WasmAllocator*, WasmBindingHash*);
+WASM_EXTERN_C_END
+
+#endif /* WASM_BINDING_HASH_H_ */