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//===- Writer.h -------------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLVM_OBJCOPY_WASM_WRITER_H
#define LLVM_TOOLS_LLVM_OBJCOPY_WASM_WRITER_H
#include "Buffer.h"
#include "Object.h"
#include <cstdint>
#include <vector>
namespace llvm {
namespace objcopy {
namespace wasm {
class Writer {
public:
Writer(Object &Obj, Buffer &Buf) : Obj(Obj), Buf(Buf) {}
Error write();
private:
using SectionHeader = SmallVector<char, 8>;
Object &Obj;
Buffer &Buf;
std::vector<SectionHeader> SectionHeaders;
/// Generate a wasm section section header for S.
/// The header consists of
/// * A one-byte section ID (aka the section type).
/// * The size of the section contents, encoded as ULEB128.
/// * If the section is a custom section (type 0) it also has a name, which is
/// encoded as a length-prefixed string. The encoded section size *includes*
/// this string.
/// See https://webassembly.github.io/spec/core/binary/modules.html#sections
/// Return the header and store the total size in SectionSize.
static SectionHeader createSectionHeader(const Section &S,
size_t &SectionSize);
size_t finalize();
};
} // end namespace wasm
} // end namespace objcopy
} // end namespace llvm
#endif // LLVM_TOOLS_LLVM_OBJCOPY_WASM_WRITER_H
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