1 files changed, 70 insertions, 0 deletions
diff --git a/third_party/wasm2c/include/wabt/leb128.h b/third_party/wasm2c/include/wabt/leb128.h
new file mode 100644
index 0000000000..e7290475b3
--- /dev/null
+++ b/third_party/wasm2c/include/wabt/leb128.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2017 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_LEB128_H_
+#define WABT_LEB128_H_
+
+#include <cstdint>
+
+#include "wabt/common.h"
+
+namespace wabt {
+
+class Stream;
+
+// Returns the length of the leb128.
+Offset U32Leb128Length(uint32_t value);
+
+void WriteU32Leb128(Stream* stream, uint32_t value, const char* desc);
+void WriteS32Leb128(Stream* stream, uint32_t value, const char* desc);
+void WriteU64Leb128(Stream* stream, uint64_t value, const char* desc);
+void WriteS64Leb128(Stream* stream, uint64_t value, const char* desc);
+void WriteFixedS32Leb128(Stream* stream, uint32_t value, const char* desc);
+void WriteFixedU32Leb128(Stream* stream, uint32_t value, const char* desc);
+
+Offset WriteU32Leb128At(Stream* stream,
+                        Offset offset,
+                        uint32_t value,
+                        const char* desc);
+
+Offset WriteFixedU32Leb128At(Stream* stream,
+                             Offset offset,
+                             uint32_t value,
+                             const char* desc);
+
+Offset WriteU32Leb128Raw(uint8_t* data, uint8_t* end, uint32_t value);
+Offset WriteFixedU32Leb128Raw(uint8_t* data, uint8_t* end, uint32_t value);
+
+// Convenience functions for writing enums as LEB128s.
+template <typename T>
+void WriteU32Leb128(Stream* stream, T value, const char* desc) {
+  WriteU32Leb128(stream, static_cast<uint32_t>(value), desc);
+}
+
+template <typename T>
+void WriteS32Leb128(Stream* stream, T value, const char* desc) {
+  WriteS32Leb128(stream, static_cast<uint32_t>(value), desc);
+}
+
+// Returns the length of the leb128.
+size_t ReadU32Leb128(const uint8_t* p, const uint8_t* end, uint32_t* out_value);
+size_t ReadU64Leb128(const uint8_t* p, const uint8_t* end, uint64_t* out_value);
+size_t ReadS32Leb128(const uint8_t* p, const uint8_t* end, uint32_t* out_value);
+size_t ReadS64Leb128(const uint8_t* p, const uint8_t* end, uint64_t* out_value);
+
+}  // namespace wabt
+
+#endif  // WABT_LEB128_H_