forked from OSchip/llvm-project
557 lines
17 KiB
C++
557 lines
17 KiB
C++
//===-- YAMLSerialization.cpp ------------------------------------*- C++-*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// A YAML index file is a sequence of tagged entries.
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// Each entry either encodes a Symbol or the list of references to a symbol
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// (a "ref bundle").
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//
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//===----------------------------------------------------------------------===//
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#include "Index.h"
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#include "Relation.h"
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#include "Serialization.h"
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#include "SymbolLocation.h"
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#include "SymbolOrigin.h"
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#include "dex/Dex.h"
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#include "support/Trace.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/Allocator.h"
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#include "llvm/Support/Errc.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/StringSaver.h"
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#include "llvm/Support/YAMLTraits.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstdint>
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LLVM_YAML_IS_SEQUENCE_VECTOR(clang::clangd::Symbol::IncludeHeaderWithReferences)
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LLVM_YAML_IS_SEQUENCE_VECTOR(clang::clangd::Ref)
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namespace {
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using RefBundle =
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std::pair<clang::clangd::SymbolID, std::vector<clang::clangd::Ref>>;
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// This is a pale imitation of std::variant<Symbol, RefBundle, Relation>
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struct VariantEntry {
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llvm::Optional<clang::clangd::Symbol> Symbol;
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llvm::Optional<RefBundle> Refs;
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llvm::Optional<clang::clangd::Relation> Relation;
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llvm::Optional<clang::clangd::IncludeGraphNode> Source;
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llvm::Optional<clang::tooling::CompileCommand> Cmd;
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};
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// A class helps YAML to serialize the 32-bit encoded position (Line&Column),
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// as YAMLIO can't directly map bitfields.
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struct YPosition {
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uint32_t Line;
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uint32_t Column;
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};
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// avoid ODR violation of specialization for non-owned CompileCommand
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struct CompileCommandYAML : clang::tooling::CompileCommand {};
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} // namespace
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namespace llvm {
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namespace yaml {
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using clang::clangd::FileDigest;
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using clang::clangd::IncludeGraph;
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using clang::clangd::IncludeGraphNode;
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using clang::clangd::Ref;
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using clang::clangd::RefKind;
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using clang::clangd::Relation;
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using clang::clangd::RelationKind;
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using clang::clangd::Symbol;
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using clang::clangd::SymbolID;
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using clang::clangd::SymbolLocation;
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using clang::clangd::SymbolOrigin;
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using clang::index::SymbolInfo;
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using clang::index::SymbolKind;
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using clang::index::SymbolLanguage;
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using clang::index::SymbolRole;
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using clang::tooling::CompileCommand;
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// Helper to (de)serialize the SymbolID. We serialize it as a hex string.
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struct NormalizedSymbolID {
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NormalizedSymbolID(IO &) {}
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NormalizedSymbolID(IO &, const SymbolID &ID) {
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llvm::raw_string_ostream OS(HexString);
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OS << ID;
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}
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SymbolID denormalize(IO &I) {
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auto ID = SymbolID::fromStr(HexString);
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if (!ID) {
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I.setError(llvm::toString(ID.takeError()));
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return SymbolID();
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}
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return *ID;
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}
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std::string HexString;
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};
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struct NormalizedSymbolFlag {
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NormalizedSymbolFlag(IO &) {}
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NormalizedSymbolFlag(IO &, Symbol::SymbolFlag F) {
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Flag = static_cast<uint8_t>(F);
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}
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Symbol::SymbolFlag denormalize(IO &) {
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return static_cast<Symbol::SymbolFlag>(Flag);
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}
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uint8_t Flag = 0;
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};
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struct NormalizedSymbolOrigin {
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NormalizedSymbolOrigin(IO &) {}
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NormalizedSymbolOrigin(IO &, SymbolOrigin O) {
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Origin = static_cast<uint8_t>(O);
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}
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SymbolOrigin denormalize(IO &) { return static_cast<SymbolOrigin>(Origin); }
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uint8_t Origin = 0;
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};
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template <> struct MappingTraits<YPosition> {
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static void mapping(IO &IO, YPosition &Value) {
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IO.mapRequired("Line", Value.Line);
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IO.mapRequired("Column", Value.Column);
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}
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};
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struct NormalizedPosition {
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using Position = clang::clangd::SymbolLocation::Position;
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NormalizedPosition(IO &) {}
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NormalizedPosition(IO &, const Position &Pos) {
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P.Line = Pos.line();
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P.Column = Pos.column();
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}
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Position denormalize(IO &) {
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Position Pos;
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Pos.setLine(P.Line);
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Pos.setColumn(P.Column);
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return Pos;
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}
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YPosition P;
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};
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struct NormalizedFileURI {
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NormalizedFileURI(IO &) {}
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NormalizedFileURI(IO &, const char *FileURI) { URI = FileURI; }
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const char *denormalize(IO &IO) {
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assert(IO.getContext() &&
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"Expecting an UniqueStringSaver to allocate data");
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return static_cast<llvm::UniqueStringSaver *>(IO.getContext())
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->save(URI)
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.data();
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}
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std::string URI;
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};
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template <> struct MappingTraits<SymbolLocation> {
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static void mapping(IO &IO, SymbolLocation &Value) {
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MappingNormalization<NormalizedFileURI, const char *> NFile(IO,
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Value.FileURI);
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IO.mapRequired("FileURI", NFile->URI);
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MappingNormalization<NormalizedPosition, SymbolLocation::Position> NStart(
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IO, Value.Start);
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IO.mapRequired("Start", NStart->P);
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MappingNormalization<NormalizedPosition, SymbolLocation::Position> NEnd(
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IO, Value.End);
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IO.mapRequired("End", NEnd->P);
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}
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};
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template <> struct MappingTraits<SymbolInfo> {
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static void mapping(IO &io, SymbolInfo &SymInfo) {
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// FIXME: expose other fields?
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io.mapRequired("Kind", SymInfo.Kind);
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io.mapRequired("Lang", SymInfo.Lang);
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}
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};
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template <>
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struct MappingTraits<clang::clangd::Symbol::IncludeHeaderWithReferences> {
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static void mapping(IO &io,
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clang::clangd::Symbol::IncludeHeaderWithReferences &Inc) {
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io.mapRequired("Header", Inc.IncludeHeader);
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io.mapRequired("References", Inc.References);
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}
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};
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template <> struct MappingTraits<Symbol> {
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static void mapping(IO &IO, Symbol &Sym) {
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MappingNormalization<NormalizedSymbolID, SymbolID> NSymbolID(IO, Sym.ID);
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MappingNormalization<NormalizedSymbolFlag, Symbol::SymbolFlag> NSymbolFlag(
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IO, Sym.Flags);
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MappingNormalization<NormalizedSymbolOrigin, SymbolOrigin> NSymbolOrigin(
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IO, Sym.Origin);
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IO.mapRequired("ID", NSymbolID->HexString);
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IO.mapRequired("Name", Sym.Name);
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IO.mapRequired("Scope", Sym.Scope);
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IO.mapRequired("SymInfo", Sym.SymInfo);
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IO.mapOptional("CanonicalDeclaration", Sym.CanonicalDeclaration,
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SymbolLocation());
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IO.mapOptional("Definition", Sym.Definition, SymbolLocation());
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IO.mapOptional("References", Sym.References, 0u);
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IO.mapOptional("Origin", NSymbolOrigin->Origin);
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IO.mapOptional("Flags", NSymbolFlag->Flag);
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IO.mapOptional("Signature", Sym.Signature);
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IO.mapOptional("TemplateSpecializationArgs",
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Sym.TemplateSpecializationArgs);
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IO.mapOptional("CompletionSnippetSuffix", Sym.CompletionSnippetSuffix);
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IO.mapOptional("Documentation", Sym.Documentation);
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IO.mapOptional("ReturnType", Sym.ReturnType);
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IO.mapOptional("Type", Sym.Type);
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IO.mapOptional("IncludeHeaders", Sym.IncludeHeaders);
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}
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};
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template <> struct ScalarEnumerationTraits<SymbolLanguage> {
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static void enumeration(IO &IO, SymbolLanguage &Value) {
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IO.enumCase(Value, "C", SymbolLanguage::C);
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IO.enumCase(Value, "Cpp", SymbolLanguage::CXX);
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IO.enumCase(Value, "ObjC", SymbolLanguage::ObjC);
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IO.enumCase(Value, "Swift", SymbolLanguage::Swift);
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}
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};
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template <> struct ScalarEnumerationTraits<SymbolKind> {
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static void enumeration(IO &IO, SymbolKind &Value) {
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#define DEFINE_ENUM(name) IO.enumCase(Value, #name, SymbolKind::name)
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DEFINE_ENUM(Unknown);
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DEFINE_ENUM(Function);
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DEFINE_ENUM(Module);
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DEFINE_ENUM(Namespace);
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DEFINE_ENUM(NamespaceAlias);
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DEFINE_ENUM(Macro);
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DEFINE_ENUM(Enum);
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DEFINE_ENUM(Struct);
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DEFINE_ENUM(Class);
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DEFINE_ENUM(Protocol);
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DEFINE_ENUM(Extension);
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DEFINE_ENUM(Union);
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DEFINE_ENUM(TypeAlias);
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DEFINE_ENUM(Function);
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DEFINE_ENUM(Variable);
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DEFINE_ENUM(Field);
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DEFINE_ENUM(EnumConstant);
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DEFINE_ENUM(InstanceMethod);
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DEFINE_ENUM(ClassMethod);
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DEFINE_ENUM(StaticMethod);
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DEFINE_ENUM(InstanceProperty);
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DEFINE_ENUM(ClassProperty);
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DEFINE_ENUM(StaticProperty);
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DEFINE_ENUM(Constructor);
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DEFINE_ENUM(Destructor);
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DEFINE_ENUM(ConversionFunction);
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DEFINE_ENUM(Parameter);
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DEFINE_ENUM(Using);
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#undef DEFINE_ENUM
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}
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};
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template <> struct MappingTraits<RefBundle> {
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static void mapping(IO &IO, RefBundle &Refs) {
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MappingNormalization<NormalizedSymbolID, SymbolID> NSymbolID(IO,
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Refs.first);
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IO.mapRequired("ID", NSymbolID->HexString);
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IO.mapRequired("References", Refs.second);
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}
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};
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struct NormalizedRefKind {
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NormalizedRefKind(IO &) {}
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NormalizedRefKind(IO &, RefKind O) { Kind = static_cast<uint8_t>(O); }
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RefKind denormalize(IO &) { return static_cast<RefKind>(Kind); }
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uint8_t Kind = 0;
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};
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template <> struct MappingTraits<Ref> {
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static void mapping(IO &IO, Ref &R) {
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MappingNormalization<NormalizedRefKind, RefKind> NKind(IO, R.Kind);
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IO.mapRequired("Kind", NKind->Kind);
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IO.mapRequired("Location", R.Location);
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}
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};
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struct NormalizedSymbolRole {
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NormalizedSymbolRole(IO &) {}
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NormalizedSymbolRole(IO &IO, RelationKind R) {
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Kind = static_cast<uint8_t>(R);
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}
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RelationKind denormalize(IO &IO) { return static_cast<RelationKind>(Kind); }
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uint8_t Kind = 0;
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};
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template <> struct MappingTraits<SymbolID> {
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static void mapping(IO &IO, SymbolID &ID) {
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MappingNormalization<NormalizedSymbolID, SymbolID> NSymbolID(IO, ID);
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IO.mapRequired("ID", NSymbolID->HexString);
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}
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};
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template <> struct MappingTraits<Relation> {
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static void mapping(IO &IO, Relation &Relation) {
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MappingNormalization<NormalizedSymbolRole, RelationKind> NRole(
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IO, Relation.Predicate);
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IO.mapRequired("Subject", Relation.Subject);
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IO.mapRequired("Predicate", NRole->Kind);
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IO.mapRequired("Object", Relation.Object);
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}
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};
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struct NormalizedSourceFlag {
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NormalizedSourceFlag(IO &) {}
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NormalizedSourceFlag(IO &, IncludeGraphNode::SourceFlag O) {
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Flag = static_cast<uint8_t>(O);
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}
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IncludeGraphNode::SourceFlag denormalize(IO &) {
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return static_cast<IncludeGraphNode::SourceFlag>(Flag);
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}
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uint8_t Flag = 0;
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};
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struct NormalizedFileDigest {
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NormalizedFileDigest(IO &) {}
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NormalizedFileDigest(IO &, const FileDigest &Digest) {
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HexString = llvm::toHex(Digest);
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}
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FileDigest denormalize(IO &I) {
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FileDigest Digest;
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if (HexString.size() == Digest.size() * 2 &&
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llvm::all_of(HexString, llvm::isHexDigit)) {
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memcpy(Digest.data(), llvm::fromHex(HexString).data(), Digest.size());
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} else {
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I.setError(std::string("Bad hex file digest: ") + HexString);
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}
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return Digest;
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}
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std::string HexString;
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};
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template <> struct MappingTraits<IncludeGraphNode> {
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static void mapping(IO &IO, IncludeGraphNode &Node) {
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IO.mapRequired("URI", Node.URI);
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MappingNormalization<NormalizedSourceFlag, IncludeGraphNode::SourceFlag>
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NSourceFlag(IO, Node.Flags);
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IO.mapRequired("Flags", NSourceFlag->Flag);
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MappingNormalization<NormalizedFileDigest, FileDigest> NDigest(IO,
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Node.Digest);
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IO.mapRequired("Digest", NDigest->HexString);
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IO.mapRequired("DirectIncludes", Node.DirectIncludes);
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}
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};
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template <> struct MappingTraits<CompileCommandYAML> {
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static void mapping(IO &IO, CompileCommandYAML &Cmd) {
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IO.mapRequired("Directory", Cmd.Directory);
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IO.mapRequired("CommandLine", Cmd.CommandLine);
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}
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};
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template <> struct MappingTraits<VariantEntry> {
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static void mapping(IO &IO, VariantEntry &Variant) {
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if (IO.mapTag("!Symbol", Variant.Symbol.hasValue())) {
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if (!IO.outputting())
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Variant.Symbol.emplace();
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MappingTraits<Symbol>::mapping(IO, *Variant.Symbol);
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} else if (IO.mapTag("!Refs", Variant.Refs.hasValue())) {
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if (!IO.outputting())
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Variant.Refs.emplace();
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MappingTraits<RefBundle>::mapping(IO, *Variant.Refs);
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} else if (IO.mapTag("!Relations", Variant.Relation.hasValue())) {
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if (!IO.outputting())
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Variant.Relation.emplace();
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MappingTraits<Relation>::mapping(IO, *Variant.Relation);
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} else if (IO.mapTag("!Source", Variant.Source.hasValue())) {
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if (!IO.outputting())
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Variant.Source.emplace();
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MappingTraits<IncludeGraphNode>::mapping(IO, *Variant.Source);
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} else if (IO.mapTag("!Cmd", Variant.Cmd.hasValue())) {
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if (!IO.outputting())
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Variant.Cmd.emplace();
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MappingTraits<CompileCommandYAML>::mapping(
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IO, static_cast<CompileCommandYAML &>(*Variant.Cmd));
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}
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}
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};
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} // namespace yaml
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} // namespace llvm
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namespace clang {
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namespace clangd {
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void writeYAML(const IndexFileOut &O, llvm::raw_ostream &OS) {
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llvm::yaml::Output Yout(OS);
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for (const auto &Sym : *O.Symbols) {
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VariantEntry Entry;
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Entry.Symbol = Sym;
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Yout << Entry;
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}
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if (O.Refs)
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for (auto &Sym : *O.Refs) {
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VariantEntry Entry;
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Entry.Refs = Sym;
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Yout << Entry;
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}
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if (O.Relations)
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for (auto &R : *O.Relations) {
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VariantEntry Entry;
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Entry.Relation = R;
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Yout << Entry;
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}
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if (O.Sources) {
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for (const auto &Source : *O.Sources) {
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VariantEntry Entry;
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Entry.Source = Source.getValue();
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Yout << Entry;
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}
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}
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if (O.Cmd) {
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VariantEntry Entry;
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Entry.Cmd = *O.Cmd;
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Yout << Entry;
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}
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}
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llvm::Expected<IndexFileIn> readYAML(llvm::StringRef Data) {
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SymbolSlab::Builder Symbols;
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RefSlab::Builder Refs;
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RelationSlab::Builder Relations;
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llvm::BumpPtrAllocator
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Arena; // store the underlying data of Position::FileURI.
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llvm::UniqueStringSaver Strings(Arena);
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llvm::yaml::Input Yin(Data, &Strings);
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IncludeGraph Sources;
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llvm::Optional<tooling::CompileCommand> Cmd;
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while (Yin.setCurrentDocument()) {
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llvm::yaml::EmptyContext Ctx;
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VariantEntry Variant;
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yamlize(Yin, Variant, true, Ctx);
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if (Yin.error())
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return llvm::errorCodeToError(Yin.error());
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if (Variant.Symbol)
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Symbols.insert(*Variant.Symbol);
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if (Variant.Refs)
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for (const auto &Ref : Variant.Refs->second)
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Refs.insert(Variant.Refs->first, Ref);
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if (Variant.Relation)
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Relations.insert(*Variant.Relation);
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if (Variant.Source) {
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auto &IGN = Variant.Source.getValue();
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auto Entry = Sources.try_emplace(IGN.URI).first;
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Entry->getValue() = std::move(IGN);
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// Fixup refs to refer to map keys which will live on
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Entry->getValue().URI = Entry->getKey();
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for (auto &Include : Entry->getValue().DirectIncludes)
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Include = Sources.try_emplace(Include).first->getKey();
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}
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if (Variant.Cmd)
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Cmd = *Variant.Cmd;
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Yin.nextDocument();
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}
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IndexFileIn Result;
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Result.Symbols.emplace(std::move(Symbols).build());
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Result.Refs.emplace(std::move(Refs).build());
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Result.Relations.emplace(std::move(Relations).build());
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if (Sources.size())
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Result.Sources = std::move(Sources);
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Result.Cmd = std::move(Cmd);
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return std::move(Result);
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}
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std::string toYAML(const Symbol &S) {
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std::string Buf;
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{
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llvm::raw_string_ostream OS(Buf);
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llvm::yaml::Output Yout(OS);
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Symbol Sym = S; // copy: Yout<< requires mutability.
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Yout << Sym;
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}
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return Buf;
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}
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std::string toYAML(const std::pair<SymbolID, llvm::ArrayRef<Ref>> &Data) {
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RefBundle Refs = {Data.first, Data.second};
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std::string Buf;
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{
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llvm::raw_string_ostream OS(Buf);
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llvm::yaml::Output Yout(OS);
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Yout << Refs;
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}
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return Buf;
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}
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std::string toYAML(const Relation &R) {
|
|
std::string Buf;
|
|
{
|
|
llvm::raw_string_ostream OS(Buf);
|
|
llvm::yaml::Output Yout(OS);
|
|
Relation Rel = R; // copy: Yout<< requires mutability.
|
|
Yout << Rel;
|
|
}
|
|
return Buf;
|
|
}
|
|
|
|
std::string toYAML(const Ref &R) {
|
|
std::string Buf;
|
|
{
|
|
llvm::raw_string_ostream OS(Buf);
|
|
llvm::yaml::Output Yout(OS);
|
|
Ref Reference = R; // copy: Yout<< requires mutability.
|
|
Yout << Reference;
|
|
}
|
|
return Buf;
|
|
}
|
|
|
|
llvm::Expected<clangd::Symbol>
|
|
symbolFromYAML(StringRef YAML, llvm::UniqueStringSaver *Strings) {
|
|
clangd::Symbol Deserialized;
|
|
llvm::yaml::Input YAMLInput(YAML, Strings);
|
|
if (YAMLInput.error())
|
|
return llvm::make_error<llvm::StringError>(
|
|
llvm::formatv("Unable to deserialize Symbol from YAML: {0}", YAML),
|
|
llvm::inconvertibleErrorCode());
|
|
YAMLInput >> Deserialized;
|
|
return Deserialized;
|
|
}
|
|
|
|
llvm::Expected<clangd::Ref> refFromYAML(StringRef YAML,
|
|
llvm::UniqueStringSaver *Strings) {
|
|
clangd::Ref Deserialized;
|
|
llvm::yaml::Input YAMLInput(YAML, Strings);
|
|
if (YAMLInput.error())
|
|
return llvm::make_error<llvm::StringError>(
|
|
llvm::formatv("Unable to deserialize Symbol from YAML: {0}", YAML),
|
|
llvm::inconvertibleErrorCode());
|
|
YAMLInput >> Deserialized;
|
|
return Deserialized;
|
|
}
|
|
|
|
} // namespace clangd
|
|
} // namespace clang
|