--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/ObjectYAML/WasmYAML.cpp	Fri Oct 27 17:07:41 2017 +0900
@@ -0,0 +1,419 @@
+//===- WasmYAML.cpp - Wasm YAMLIO implementation --------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines classes for handling the YAML representation of wasm.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ObjectYAML/WasmYAML.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Casting.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/YAMLTraits.h"
+
+namespace llvm {
+
+namespace WasmYAML {
+
+// Declared here rather than in the header to comply with:
+// http://llvm.org/docs/CodingStandards.html#provide-a-virtual-method-anchor-for-classes-in-headers
+Section::~Section() = default;
+
+} // end namespace WasmYAML
+
+namespace yaml {
+
+void MappingTraits<WasmYAML::FileHeader>::mapping(
+    IO &IO, WasmYAML::FileHeader &FileHdr) {
+  IO.mapRequired("Version", FileHdr.Version);
+}
+
+void MappingTraits<WasmYAML::Object>::mapping(IO &IO,
+                                              WasmYAML::Object &Object) {
+  IO.setContext(&Object);
+  IO.mapTag("!WASM", true);
+  IO.mapRequired("FileHeader", Object.Header);
+  IO.mapOptional("Sections", Object.Sections);
+  IO.setContext(nullptr);
+}
+
+static void commonSectionMapping(IO &IO, WasmYAML::Section &Section) {
+  IO.mapRequired("Type", Section.Type);
+  IO.mapOptional("Relocations", Section.Relocations);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::NameSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapRequired("Name", Section.Name);
+  IO.mapOptional("FunctionNames", Section.FunctionNames);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::LinkingSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapRequired("Name", Section.Name);
+  IO.mapRequired("DataSize", Section.DataSize);
+  IO.mapOptional("SymbolInfo", Section.SymbolInfos);
+  IO.mapOptional("SegmentInfo", Section.SegmentInfos);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::CustomSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapRequired("Name", Section.Name);
+  IO.mapRequired("Payload", Section.Payload);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::TypeSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapOptional("Signatures", Section.Signatures);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::ImportSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapOptional("Imports", Section.Imports);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::FunctionSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapOptional("FunctionTypes", Section.FunctionTypes);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::TableSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapOptional("Tables", Section.Tables);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::MemorySection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapOptional("Memories", Section.Memories);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::GlobalSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapOptional("Globals", Section.Globals);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::ExportSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapOptional("Exports", Section.Exports);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::StartSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapOptional("StartFunction", Section.StartFunction);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::ElemSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapOptional("Segments", Section.Segments);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::CodeSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapRequired("Functions", Section.Functions);
+}
+
+static void sectionMapping(IO &IO, WasmYAML::DataSection &Section) {
+  commonSectionMapping(IO, Section);
+  IO.mapRequired("Segments", Section.Segments);
+}
+
+void MappingTraits<std::unique_ptr<WasmYAML::Section>>::mapping(
+    IO &IO, std::unique_ptr<WasmYAML::Section> &Section) {
+  WasmYAML::SectionType SectionType;
+  if (IO.outputting())
+    SectionType = Section->Type;
+  else
+    IO.mapRequired("Type", SectionType);
+
+  switch (SectionType) {
+  case wasm::WASM_SEC_CUSTOM: {
+    StringRef SectionName;
+    if (IO.outputting()) {
+      auto CustomSection = cast<WasmYAML::CustomSection>(Section.get());
+      SectionName = CustomSection->Name;
+    } else {
+      IO.mapRequired("Name", SectionName);
+    }
+    if (SectionName == "linking") {
+      if (!IO.outputting())
+        Section.reset(new WasmYAML::LinkingSection());
+      sectionMapping(IO, *cast<WasmYAML::LinkingSection>(Section.get()));
+    } else if (SectionName == "name") {
+      if (!IO.outputting())
+        Section.reset(new WasmYAML::NameSection());
+      sectionMapping(IO, *cast<WasmYAML::NameSection>(Section.get()));
+    } else {
+      if (!IO.outputting())
+        Section.reset(new WasmYAML::CustomSection(SectionName));
+      sectionMapping(IO, *cast<WasmYAML::CustomSection>(Section.get()));
+    }
+    break;
+  }
+  case wasm::WASM_SEC_TYPE:
+    if (!IO.outputting())
+      Section.reset(new WasmYAML::TypeSection());
+    sectionMapping(IO, *cast<WasmYAML::TypeSection>(Section.get()));
+    break;
+  case wasm::WASM_SEC_IMPORT:
+    if (!IO.outputting())
+      Section.reset(new WasmYAML::ImportSection());
+    sectionMapping(IO, *cast<WasmYAML::ImportSection>(Section.get()));
+    break;
+  case wasm::WASM_SEC_FUNCTION:
+    if (!IO.outputting())
+      Section.reset(new WasmYAML::FunctionSection());
+    sectionMapping(IO, *cast<WasmYAML::FunctionSection>(Section.get()));
+    break;
+  case wasm::WASM_SEC_TABLE:
+    if (!IO.outputting())
+      Section.reset(new WasmYAML::TableSection());
+    sectionMapping(IO, *cast<WasmYAML::TableSection>(Section.get()));
+    break;
+  case wasm::WASM_SEC_MEMORY:
+    if (!IO.outputting())
+      Section.reset(new WasmYAML::MemorySection());
+    sectionMapping(IO, *cast<WasmYAML::MemorySection>(Section.get()));
+    break;
+  case wasm::WASM_SEC_GLOBAL:
+    if (!IO.outputting())
+      Section.reset(new WasmYAML::GlobalSection());
+    sectionMapping(IO, *cast<WasmYAML::GlobalSection>(Section.get()));
+    break;
+  case wasm::WASM_SEC_EXPORT:
+    if (!IO.outputting())
+      Section.reset(new WasmYAML::ExportSection());
+    sectionMapping(IO, *cast<WasmYAML::ExportSection>(Section.get()));
+    break;
+  case wasm::WASM_SEC_START:
+    if (!IO.outputting())
+      Section.reset(new WasmYAML::StartSection());
+    sectionMapping(IO, *cast<WasmYAML::StartSection>(Section.get()));
+    break;
+  case wasm::WASM_SEC_ELEM:
+    if (!IO.outputting())
+      Section.reset(new WasmYAML::ElemSection());
+    sectionMapping(IO, *cast<WasmYAML::ElemSection>(Section.get()));
+    break;
+  case wasm::WASM_SEC_CODE:
+    if (!IO.outputting())
+      Section.reset(new WasmYAML::CodeSection());
+    sectionMapping(IO, *cast<WasmYAML::CodeSection>(Section.get()));
+    break;
+  case wasm::WASM_SEC_DATA:
+    if (!IO.outputting())
+      Section.reset(new WasmYAML::DataSection());
+    sectionMapping(IO, *cast<WasmYAML::DataSection>(Section.get()));
+    break;
+  default:
+    llvm_unreachable("Unknown section type");
+  }
+}
+
+void ScalarEnumerationTraits<WasmYAML::SectionType>::enumeration(
+    IO &IO, WasmYAML::SectionType &Type) {
+#define ECase(X) IO.enumCase(Type, #X, wasm::WASM_SEC_##X);
+  ECase(CUSTOM);
+  ECase(TYPE);
+  ECase(IMPORT);
+  ECase(FUNCTION);
+  ECase(TABLE);
+  ECase(MEMORY);
+  ECase(GLOBAL);
+  ECase(EXPORT);
+  ECase(START);
+  ECase(ELEM);
+  ECase(CODE);
+  ECase(DATA);
+#undef ECase
+}
+
+void MappingTraits<WasmYAML::Signature>::mapping(
+    IO &IO, WasmYAML::Signature &Signature) {
+  IO.mapOptional("Index", Signature.Index);
+  IO.mapRequired("ReturnType", Signature.ReturnType);
+  IO.mapRequired("ParamTypes", Signature.ParamTypes);
+}
+
+void MappingTraits<WasmYAML::Table>::mapping(IO &IO, WasmYAML::Table &Table) {
+  IO.mapRequired("ElemType", Table.ElemType);
+  IO.mapRequired("Limits", Table.TableLimits);
+}
+
+void MappingTraits<WasmYAML::Function>::mapping(IO &IO,
+                                                WasmYAML::Function &Function) {
+  IO.mapRequired("Locals", Function.Locals);
+  IO.mapRequired("Body", Function.Body);
+}
+
+void MappingTraits<WasmYAML::Relocation>::mapping(
+    IO &IO, WasmYAML::Relocation &Relocation) {
+  IO.mapRequired("Type", Relocation.Type);
+  IO.mapRequired("Index", Relocation.Index);
+  IO.mapRequired("Offset", Relocation.Offset);
+  IO.mapOptional("Addend", Relocation.Addend, 0);
+}
+
+void MappingTraits<WasmYAML::NameEntry>::mapping(
+    IO &IO, WasmYAML::NameEntry &NameEntry) {
+  IO.mapRequired("Index", NameEntry.Index);
+  IO.mapRequired("Name", NameEntry.Name);
+}
+
+void MappingTraits<WasmYAML::SegmentInfo>::mapping(
+    IO &IO, WasmYAML::SegmentInfo &SegmentInfo) {
+  IO.mapRequired("Index", SegmentInfo.Index);
+  IO.mapRequired("Name", SegmentInfo.Name);
+  IO.mapRequired("Alignment", SegmentInfo.Alignment);
+  IO.mapRequired("Flags", SegmentInfo.Flags);
+}
+
+void MappingTraits<WasmYAML::LocalDecl>::mapping(
+    IO &IO, WasmYAML::LocalDecl &LocalDecl) {
+  IO.mapRequired("Type", LocalDecl.Type);
+  IO.mapRequired("Count", LocalDecl.Count);
+}
+
+void MappingTraits<WasmYAML::Limits>::mapping(IO &IO,
+                                              WasmYAML::Limits &Limits) {
+  if (!IO.outputting() || Limits.Flags)
+    IO.mapOptional("Flags", Limits.Flags);
+  IO.mapRequired("Initial", Limits.Initial);
+  if (!IO.outputting() || Limits.Flags & wasm::WASM_LIMITS_FLAG_HAS_MAX)
+    IO.mapOptional("Maximum", Limits.Maximum);
+}
+
+void MappingTraits<WasmYAML::ElemSegment>::mapping(
+    IO &IO, WasmYAML::ElemSegment &Segment) {
+  IO.mapRequired("Offset", Segment.Offset);
+  IO.mapRequired("Functions", Segment.Functions);
+}
+
+void MappingTraits<WasmYAML::Import>::mapping(IO &IO,
+                                              WasmYAML::Import &Import) {
+  IO.mapRequired("Module", Import.Module);
+  IO.mapRequired("Field", Import.Field);
+  IO.mapRequired("Kind", Import.Kind);
+  if (Import.Kind == wasm::WASM_EXTERNAL_FUNCTION) {
+    IO.mapRequired("SigIndex", Import.SigIndex);
+  } else if (Import.Kind == wasm::WASM_EXTERNAL_GLOBAL) {
+    IO.mapRequired("GlobalType", Import.GlobalImport.Type);
+    IO.mapRequired("GlobalMutable", Import.GlobalImport.Mutable);
+  } else if (Import.Kind == wasm::WASM_EXTERNAL_TABLE) {
+    IO.mapRequired("Table", Import.TableImport);
+  } else if (Import.Kind == wasm::WASM_EXTERNAL_MEMORY ) {
+    IO.mapRequired("Memory", Import.Memory);
+  } else {
+    llvm_unreachable("unhandled import type");
+  }
+}
+
+void MappingTraits<WasmYAML::Export>::mapping(IO &IO,
+                                              WasmYAML::Export &Export) {
+  IO.mapRequired("Name", Export.Name);
+  IO.mapRequired("Kind", Export.Kind);
+  IO.mapRequired("Index", Export.Index);
+}
+
+void MappingTraits<WasmYAML::Global>::mapping(IO &IO,
+                                              WasmYAML::Global &Global) {
+  IO.mapRequired("Type", Global.Type);
+  IO.mapRequired("Mutable", Global.Mutable);
+  IO.mapRequired("InitExpr", Global.InitExpr);
+}
+
+void MappingTraits<wasm::WasmInitExpr>::mapping(IO &IO,
+                                                wasm::WasmInitExpr &Expr) {
+  WasmYAML::Opcode Op = Expr.Opcode;
+  IO.mapRequired("Opcode", Op);
+  Expr.Opcode = Op;
+  switch (Expr.Opcode) {
+  case wasm::WASM_OPCODE_I32_CONST:
+    IO.mapRequired("Value", Expr.Value.Int32);
+    break;
+  case wasm::WASM_OPCODE_I64_CONST:
+    IO.mapRequired("Value", Expr.Value.Int64);
+    break;
+  case wasm::WASM_OPCODE_F32_CONST:
+    IO.mapRequired("Value", Expr.Value.Float32);
+    break;
+  case wasm::WASM_OPCODE_F64_CONST:
+    IO.mapRequired("Value", Expr.Value.Float64);
+    break;
+  case wasm::WASM_OPCODE_GET_GLOBAL:
+    IO.mapRequired("Index", Expr.Value.Global);
+    break;
+  }
+}
+
+void MappingTraits<WasmYAML::DataSegment>::mapping(
+    IO &IO, WasmYAML::DataSegment &Segment) {
+  IO.mapOptional("SectionOffset", Segment.SectionOffset);
+  IO.mapRequired("MemoryIndex", Segment.MemoryIndex);
+  IO.mapRequired("Offset", Segment.Offset);
+  IO.mapRequired("Content", Segment.Content);
+}
+
+void MappingTraits<WasmYAML::SymbolInfo>::mapping(IO &IO,
+                                                  WasmYAML::SymbolInfo &Info) {
+  IO.mapRequired("Name", Info.Name);
+  IO.mapRequired("Flags", Info.Flags);
+}
+
+void ScalarEnumerationTraits<WasmYAML::ValueType>::enumeration(
+    IO &IO, WasmYAML::ValueType &Type) {
+#define ECase(X) IO.enumCase(Type, #X, wasm::WASM_TYPE_##X);
+  ECase(I32);
+  ECase(I64);
+  ECase(F32);
+  ECase(F64);
+  ECase(ANYFUNC);
+  ECase(FUNC);
+  ECase(NORESULT);
+#undef ECase
+}
+
+void ScalarEnumerationTraits<WasmYAML::ExportKind>::enumeration(
+    IO &IO, WasmYAML::ExportKind &Kind) {
+#define ECase(X) IO.enumCase(Kind, #X, wasm::WASM_EXTERNAL_##X);
+  ECase(FUNCTION);
+  ECase(TABLE);
+  ECase(MEMORY);
+  ECase(GLOBAL);
+#undef ECase
+}
+
+void ScalarEnumerationTraits<WasmYAML::Opcode>::enumeration(
+    IO &IO, WasmYAML::Opcode &Code) {
+#define ECase(X) IO.enumCase(Code, #X, wasm::WASM_OPCODE_##X);
+  ECase(END);
+  ECase(I32_CONST);
+  ECase(I64_CONST);
+  ECase(F64_CONST);
+  ECase(F32_CONST);
+  ECase(GET_GLOBAL);
+#undef ECase
+}
+
+void ScalarEnumerationTraits<WasmYAML::TableType>::enumeration(
+    IO &IO, WasmYAML::TableType &Type) {
+#define ECase(X) IO.enumCase(Type, #X, wasm::WASM_TYPE_##X);
+  ECase(ANYFUNC);
+#undef ECase
+}
+
+void ScalarEnumerationTraits<WasmYAML::RelocType>::enumeration(
+    IO &IO, WasmYAML::RelocType &Type) {
+#define WASM_RELOC(name, value) IO.enumCase(Type, #name, wasm::name);
+#include "llvm/BinaryFormat/WasmRelocs/WebAssembly.def"
+#undef WASM_RELOC
+}
+
+} // end namespace yaml
+
+} // end namespace llvm