/src/WasmEdge/lib/loader/serialize/serial_module.cpp

Source
// SPDX-License-Identifier: Apache-2.0
// SPDX-FileCopyrightText: Copyright The WasmEdge Authors

#include "loader/serialize.h"

#include <algorithm>
#include <variant>

namespace WasmEdge {
namespace Loader {

// Serialize module. See "include/loader/serialize.h".
Expect<std::vector<uint8_t>>
Serializer::serializeModule(const AST::Module &Mod) const noexcept {
  std::vector<uint8_t> OutVec;
  OutVec.reserve(Mod.getMagic().size() + Mod.getVersion().size());
  // Serialize Magic and Version.
  OutVec.insert(OutVec.end(), Mod.getMagic().begin(), Mod.getMagic().end());
  OutVec.insert(OutVec.end(), Mod.getVersion().begin(), Mod.getVersion().end());

  using SecVariant =
      std::variant<const AST::TypeSection *, const AST::ImportSection *,
                   const AST::FunctionSection *, const AST::TableSection *,
                   const AST::MemorySection *, const AST::TagSection *,
                   const AST::GlobalSection *, const AST::ExportSection *,
                   const AST::StartSection *, const AST::ElementSection *,
                   const AST::DataCountSection *, const AST::CodeSection *,
                   const AST::DataSection *>;

  // The known sections, in the order the binary format requires, which is the
  // order Loader::loadModule enforces.
  const SecVariant Ordered[] = {
      &Mod.getTypeSection(),      &Mod.getImportSection(),
      &Mod.getFunctionSection(),  &Mod.getTableSection(),
      &Mod.getMemorySection(),    &Mod.getTagSection(),
      &Mod.getGlobalSection(),    &Mod.getExportSection(),
      &Mod.getStartSection(),     &Mod.getElementSection(),
      &Mod.getDataCountSection(), &Mod.getCodeSection(),
      &Mod.getDataSection()};

  // Custom sections may appear anywhere, so they are merged into that skeleton
  // by offset, which keeps their position for a module read by the loader.
  std::vector<const AST::CustomSection *> Customs;
  Customs.reserve(Mod.getCustomSections().size());
  for (const auto &Custom : Mod.getCustomSections()) {
    Customs.push_back(&Custom);
  }
  std::stable_sort(Customs.begin(), Customs.end(),
                   [](const auto *A, const auto *B) {
                     return A->getStartOffset() < B->getStartOffset();
                   });

  auto It = Customs.begin();
  const auto End = Customs.end();
  for (const auto &Sec : Ordered) {
    const uint64_t Offset =
        std::visit([](const auto *S) { return S->getStartOffset(); }, Sec);
    for (; It != End && (*It)->getStartOffset() < Offset; ++It) {
      serializeSection(**It, OutVec);
    }
    std::visit([&](const auto *S) { serializeSection(*S, OutVec); }, Sec);
  }
  for (; It != End; ++It) {
    serializeSection(**It, OutVec);
  }

  return OutVec;
}

} // namespace Loader
} // namespace WasmEdge

Line	Count	Source
1		// SPDX-License-Identifier: Apache-2.0
2		// SPDX-FileCopyrightText: Copyright The WasmEdge Authors
3
4		#include "loader/serialize.h"
5
6		#include <algorithm>
7		#include <variant>
8
9		namespace WasmEdge {
10		namespace Loader {
11
12		// Serialize module. See "include/loader/serialize.h".
13		Expect<std::vector<uint8_t>>
14	0	Serializer::serializeModule(const AST::Module &Mod) const noexcept {
15	0	std::vector<uint8_t> OutVec;
16	0	OutVec.reserve(Mod.getMagic().size() + Mod.getVersion().size());
17		// Serialize Magic and Version.
18	0	OutVec.insert(OutVec.end(), Mod.getMagic().begin(), Mod.getMagic().end());
19	0	OutVec.insert(OutVec.end(), Mod.getVersion().begin(), Mod.getVersion().end());
20
21	0	using SecVariant =
22	0	std::variant<const AST::TypeSection , const AST::ImportSection ,
23	0	const AST::FunctionSection , const AST::TableSection ,
24	0	const AST::MemorySection , const AST::TagSection ,
25	0	const AST::GlobalSection , const AST::ExportSection ,
26	0	const AST::StartSection , const AST::ElementSection ,
27	0	const AST::DataCountSection , const AST::CodeSection ,
28	0	const AST::DataSection *>;
29
30		// The known sections, in the order the binary format requires, which is the
31		// order Loader::loadModule enforces.
32	0	const SecVariant Ordered[] = {
33	0	&Mod.getTypeSection(), &Mod.getImportSection(),
34	0	&Mod.getFunctionSection(), &Mod.getTableSection(),
35	0	&Mod.getMemorySection(), &Mod.getTagSection(),
36	0	&Mod.getGlobalSection(), &Mod.getExportSection(),
37	0	&Mod.getStartSection(), &Mod.getElementSection(),
38	0	&Mod.getDataCountSection(), &Mod.getCodeSection(),
39	0	&Mod.getDataSection()};
40
41		// Custom sections may appear anywhere, so they are merged into that skeleton
42		// by offset, which keeps their position for a module read by the loader.
43	0	std::vector<const AST::CustomSection *> Customs;
44	0	Customs.reserve(Mod.getCustomSections().size());
45	0	for (const auto &Custom : Mod.getCustomSections()) {
46	0	Customs.push_back(&Custom);
47	0	}
48	0	std::stable_sort(Customs.begin(), Customs.end(),
49	0	[](const auto A, const auto B) {
50	0	return A->getStartOffset() < B->getStartOffset();
51	0	});
52
53	0	auto It = Customs.begin();
54	0	const auto End = Customs.end();
55	0	for (const auto &Sec : Ordered) {
56	0	const uint64_t Offset =
57	0	std::visit([](const auto S) { return S->getStartOffset(); }, Sec); Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::TypeSection>(WasmEdge::AST::TypeSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::ImportSection>(WasmEdge::AST::ImportSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::FunctionSection>(WasmEdge::AST::FunctionSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::TableSection>(WasmEdge::AST::TableSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::MemorySection>(WasmEdge::AST::MemorySection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::TagSection>(WasmEdge::AST::TagSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::GlobalSection>(WasmEdge::AST::GlobalSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::ExportSection>(WasmEdge::AST::ExportSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::StartSection>(WasmEdge::AST::StartSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::ElementSection>(WasmEdge::AST::ElementSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::DataCountSection>(WasmEdge::AST::DataCountSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::CodeSection>(WasmEdge::AST::CodeSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_0::operator()<WasmEdge::AST::DataSection>(WasmEdge::AST::DataSection const) const
58	0	for (; It != End && (*It)->getStartOffset() < Offset; ++It) {
59	0	serializeSection(**It, OutVec);
60	0	}
61	0	std::visit([&](const auto S) { serializeSection(S, OutVec); }, Sec); Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::TypeSection>(WasmEdge::AST::TypeSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::ImportSection>(WasmEdge::AST::ImportSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::FunctionSection>(WasmEdge::AST::FunctionSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::TableSection>(WasmEdge::AST::TableSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::MemorySection>(WasmEdge::AST::MemorySection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::TagSection>(WasmEdge::AST::TagSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::GlobalSection>(WasmEdge::AST::GlobalSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::ExportSection>(WasmEdge::AST::ExportSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::StartSection>(WasmEdge::AST::StartSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::ElementSection>(WasmEdge::AST::ElementSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::DataCountSection>(WasmEdge::AST::DataCountSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::CodeSection>(WasmEdge::AST::CodeSection const) const Unexecuted instantiation: serial_module.cpp:auto WasmEdge::Loader::Serializer::serializeModule(WasmEdge::AST::Module const&) const::$_1::operator()<WasmEdge::AST::DataSection>(WasmEdge::AST::DataSection const*) const
62	0	}
63	0	for (; It != End; ++It) {
64	0	serializeSection(**It, OutVec);
65	0	}
66
67	0	return OutVec;
68	0	}
69
70		} // namespace Loader
71		} // namespace WasmEdge

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Created: 2026-09-28 06:22