[clang-tools-extra] r317486 - Adds a json::Expr type to represent intermediate JSON expressions.

Yung, Douglas via cfe-commits cfe-commits at lists.llvm.org
Tue Nov 7 18:39:20 PST 2017


Hi Sam,

The test definitions.test is currently failing on the PS4 Windows bot because the URI returned is of the format "file:///C:/main.cpp" instead of the expected "file:///main.cpp" when run on a Windows machine. Can you please fix this ASAP so that we can get the bot green again?

Here you can see the failure on the build bot:
http://lab.llvm.org:8011/builders/llvm-clang-lld-x86_64-scei-ps4-windows10pro-fast/builds/13343

You can reproduce the failure by feeding the following file to clangd on Windows:

# Begin failure.test
Content-Length: 125

{"jsonrpc":"2.0","id":0,"method":"initialize","params":{"processId":123,"rootPath":"clangd","capabilities":{},"trace":"off"}}

Content-Length: 217

{"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"#define FOO 1\nint a = FOO;\n#define FOO 2\nint b = FOO;\n#undef FOO\n"}]}}

Content-Length: 148

{"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocument":{"uri":"file:///main.cpp"},"position":{"line":1,"character":8}}}
# End failure.test


This is cut down from test\clangd\definitions.test. The failure is on line 337 where it is looking for this:

# CHECK-NEXT:      "uri": "file:///main.cpp"

However, clangd is generating:

"uri": "file:///C:/main.cpp"

If you could fix this as soon as possible it would be greatly appreciated since it is causing the PS4 Windows bot to be red.

Thanks!

Douglas Yung

> -----Original Message-----
> From: cfe-commits [mailto:cfe-commits-bounces at lists.llvm.org] On Behalf Of Sam
> McCall via cfe-commits
> Sent: Monday, November 06, 2017 7:41
> To: cfe-commits at lists.llvm.org
> Subject: [clang-tools-extra] r317486 - Adds a json::Expr type to represent
> intermediate JSON expressions.
> 
> Author: sammccall
> Date: Mon Nov  6 07:40:30 2017
> New Revision: 317486
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=317486&view=rev
> Log:
> Adds a json::Expr type to represent intermediate JSON expressions.
> 
> Summary:
> This form can be created with a nice clang-format-friendly literal syntax,
> and gets escaping right. It knows how to call unparse() on our Protocol types.
> All the places where we pass around JSON internally now use this type.
> 
> Object properties are sorted (stored as std::map) and so serialization is
> canonicalized, with optional prettyprinting (triggered by a -pretty flag).
> This makes the lit tests much nicer to read and somewhat nicer to debug.
> (Unfortunately the completion tests use CHECK-DAG, which only has
> line-granularity, so pretty-printing is disabled there. In future we
> could make completion ordering deterministic, or switch to unittests).
> 
> Compared to the current approach, it has some efficiencies like avoiding
> copies
> of string literals used as object keys, but is probably slower overall.
> I think the code/test quality benefits are worth it.
> 
> This patch doesn't attempt to do anything about JSON *parsing*.
> It takes direction from the proposal in this doc[1], but is limited in scope
> and visibility, for now.
> I am of half a mind just to use Expr as the target of a parser, and maybe do a
> little string deduplication, but not bother with clever memory allocation.
> That would be simple, and fast enough for clangd...
> [1]
> https://docs.google.com/document/d/1OEF9IauWwNuSigZzvvbjc1cVS1uGHRyGTXaoy3DjqM
> 4/edit
> 
> +cc d0k so he can tell me not to use std::map.
> 
> Reviewers: ioeric, malaperle
> 
> Subscribers: bkramer, ilya-biryukov, mgorny, klimek
> 
> Differential Revision: https://reviews.llvm.org/D39435
> 
> Added:
>     clang-tools-extra/trunk/clangd/JSONExpr.cpp
>     clang-tools-extra/trunk/clangd/JSONExpr.h
>     clang-tools-extra/trunk/unittests/clangd/JSONExprTests.cpp
> Modified:
>     clang-tools-extra/trunk/clangd/CMakeLists.txt
>     clang-tools-extra/trunk/clangd/ClangdLSPServer.cpp
>     clang-tools-extra/trunk/clangd/JSONRPCDispatcher.cpp
>     clang-tools-extra/trunk/clangd/JSONRPCDispatcher.h
>     clang-tools-extra/trunk/clangd/Protocol.cpp
>     clang-tools-extra/trunk/clangd/Protocol.h
>     clang-tools-extra/trunk/clangd/tool/ClangdMain.cpp
>     clang-tools-extra/trunk/test/clangd/authority-less-uri.test
>     clang-tools-extra/trunk/test/clangd/completion-items-kinds.test
>     clang-tools-extra/trunk/test/clangd/completion-priorities.test
>     clang-tools-extra/trunk/test/clangd/completion-qualifiers.test
>     clang-tools-extra/trunk/test/clangd/completion-snippet.test
>     clang-tools-extra/trunk/test/clangd/completion.test
>     clang-tools-extra/trunk/test/clangd/definitions.test
>     clang-tools-extra/trunk/test/clangd/diagnostics-preamble.test
>     clang-tools-extra/trunk/test/clangd/diagnostics.test
>     clang-tools-extra/trunk/test/clangd/did-change-watch-files.test
>     clang-tools-extra/trunk/test/clangd/execute-command.test
>     clang-tools-extra/trunk/test/clangd/extra-flags.test
>     clang-tools-extra/trunk/test/clangd/fixits.test
>     clang-tools-extra/trunk/test/clangd/formatting.test
>     clang-tools-extra/trunk/test/clangd/initialize-params-invalid.test
>     clang-tools-extra/trunk/test/clangd/initialize-params.test
>     clang-tools-extra/trunk/test/clangd/input-mirror.test
>     clang-tools-extra/trunk/test/clangd/protocol.test
>     clang-tools-extra/trunk/test/clangd/signature-help.test
>     clang-tools-extra/trunk/test/clangd/unsupported-method.test
>     clang-tools-extra/trunk/unittests/clangd/CMakeLists.txt
> 
> Modified: clang-tools-extra/trunk/clangd/CMakeLists.txt
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/clangd/CMakeLists.txt?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/clangd/CMakeLists.txt (original)
> +++ clang-tools-extra/trunk/clangd/CMakeLists.txt Mon Nov  6 07:40:30 2017
> @@ -10,6 +10,7 @@ add_clang_library(clangDaemon
>    DraftStore.cpp
>    GlobalCompilationDatabase.cpp
>    JSONRPCDispatcher.cpp
> +  JSONExpr.cpp
>    Logger.cpp
>    Protocol.cpp
>    ProtocolHandlers.cpp
> 
> Modified: clang-tools-extra/trunk/clangd/ClangdLSPServer.cpp
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/clangd/ClangdLSPServer.cpp?rev=317486&r1=317485&r2=317486&view=dif
> f
> ==============================================================================
> --- clang-tools-extra/trunk/clangd/ClangdLSPServer.cpp (original)
> +++ clang-tools-extra/trunk/clangd/ClangdLSPServer.cpp Mon Nov  6 07:40:30
> 2017
> @@ -20,35 +20,46 @@ namespace {
>  std::vector<TextEdit>
>  replacementsToEdits(StringRef Code,
>                      const std::vector<tooling::Replacement> &Replacements) {
> -  std::vector<TextEdit> Edits;
>    // Turn the replacements into the format specified by the Language Server
> -  // Protocol.
> +  // Protocol. Fuse them into one big JSON array.
> +  std::vector<TextEdit> Edits;
>    for (auto &R : Replacements) {
>      Range ReplacementRange = {
>          offsetToPosition(Code, R.getOffset()),
>          offsetToPosition(Code, R.getOffset() + R.getLength())};
>      Edits.push_back({ReplacementRange, R.getReplacementText()});
>    }
> -
>    return Edits;
>  }
> 
>  } // namespace
> 
>  void ClangdLSPServer::onInitialize(Ctx C, InitializeParams &Params) {
> -  C.reply(
> -      R"({"capabilities":{
> -          "textDocumentSync": 1,
> -          "documentFormattingProvider": true,
> -          "documentRangeFormattingProvider": true,
> -          "documentOnTypeFormattingProvider":
> {"firstTriggerCharacter":"}","moreTriggerCharacter":[]},
> -          "codeActionProvider": true,
> -          "completionProvider": {"resolveProvider": false,
> "triggerCharacters": [".",">",":"]},
> -          "signatureHelpProvider": {"triggerCharacters": ["(",","]},
> -          "definitionProvider": true,
> -          "executeCommandProvider": {"commands": [")" +
> -      ExecuteCommandParams::CLANGD_APPLY_FIX_COMMAND + R"("]}
> -        }})");
> +  C.reply(json::obj{
> +      {"textDocumentSync", 1},
> +      {"documentFormattingProvider", true},
> +      {"documentRangeFormattingProvider", true},
> +      {"documentOnTypeFormattingProvider",
> +       json::obj{
> +           {"firstTriggerCharacter", "}"},
> +           {"moreTriggerCharacter", {}},
> +       }},
> +      {"codeActionProvider", true},
> +      {"completionProvider",
> +       json::obj{
> +           {"resolveProvider", false},
> +           {"triggerCharacters", {".", ">", ":"}},
> +       }},
> +      {"signatureHelpProvider",
> +       json::obj{
> +           {"triggerCharacters", {"(", ","}},
> +       }},
> +      {"definitionProvider", true},
> +      {"executeCommandProvider",
> +       json::obj{
> +           {"commands", {ExecuteCommandParams::CLANGD_APPLY_FIX_COMMAND}},
> +       }},
> +  });
>    if (Params.rootUri && !Params.rootUri->file.empty())
>      Server.setRootPath(Params.rootUri->file);
>    else if (Params.rootPath && !Params.rootPath->empty())
> @@ -58,7 +69,7 @@ void ClangdLSPServer::onInitialize(Ctx C
>  void ClangdLSPServer::onShutdown(Ctx C, ShutdownParams &Params) {
>    // Do essentially nothing, just say we're ready to exit.
>    ShutdownRequestReceived = true;
> -  C.reply("null");
> +  C.reply(nullptr);
>  }
> 
>  void ClangdLSPServer::onExit(Ctx C, ExitParams &Params) { IsDone = true; }
> @@ -98,7 +109,7 @@ void ClangdLSPServer::onCommand(Ctx C, E
> 
>      ApplyWorkspaceEditParams ApplyEdit;
>      ApplyEdit.edit = *Params.workspaceEdit;
> -    C.reply("\"Fix applied.\"");
> +    C.reply("Fix applied.");
>      // We don't need the response so id == 1 is OK.
>      // Ideally, we would wait for the response and if there is no error, we
>      // would reply success/failure to the original RPC.
> @@ -121,51 +132,45 @@ void ClangdLSPServer::onDocumentOnTypeFo
>      Ctx C, DocumentOnTypeFormattingParams &Params) {
>    auto File = Params.textDocument.uri.file;
>    std::string Code = Server.getDocument(File);
> -  std::string Edits = TextEdit::unparse(
> -      replacementsToEdits(Code, Server.formatOnType(File, Params.position)));
> -  C.reply(Edits);
> +  C.reply(json::ary(
> +      replacementsToEdits(Code, Server.formatOnType(File,
> Params.position))));
>  }
> 
>  void ClangdLSPServer::onDocumentRangeFormatting(
>      Ctx C, DocumentRangeFormattingParams &Params) {
>    auto File = Params.textDocument.uri.file;
>    std::string Code = Server.getDocument(File);
> -  std::string Edits = TextEdit::unparse(
> -      replacementsToEdits(Code, Server.formatRange(File, Params.range)));
> -  C.reply(Edits);
> +  C.reply(json::ary(
> +      replacementsToEdits(Code, Server.formatRange(File, Params.range))));
>  }
> 
>  void ClangdLSPServer::onDocumentFormatting(Ctx C,
>                                             DocumentFormattingParams &Params)
> {
>    auto File = Params.textDocument.uri.file;
>    std::string Code = Server.getDocument(File);
> -  std::string Edits =
> -      TextEdit::unparse(replacementsToEdits(Code, Server.formatFile(File)));
> -  C.reply(Edits);
> +  C.reply(json::ary(replacementsToEdits(Code, Server.formatFile(File))));
>  }
> 
>  void ClangdLSPServer::onCodeAction(Ctx C, CodeActionParams &Params) {
>    // We provide a code action for each diagnostic at the requested location
>    // which has FixIts available.
>    std::string Code = Server.getDocument(Params.textDocument.uri.file);
> -  std::string Commands;
> +  json::ary Commands;
>    for (Diagnostic &D : Params.context.diagnostics) {
>      std::vector<clang::tooling::Replacement> Fixes =
>          getFixIts(Params.textDocument.uri.file, D);
>      auto Edits = replacementsToEdits(Code, Fixes);
> -    WorkspaceEdit WE;
> -    WE.changes = {{llvm::yaml::escape(Params.textDocument.uri.uri), Edits}};
> -
> -    if (!Edits.empty())
> -      Commands +=
> -          R"({"title":"Apply FixIt ')" + llvm::yaml::escape(D.message) +
> -          R"('", "command": ")" +
> -          ExecuteCommandParams::CLANGD_APPLY_FIX_COMMAND +
> -          R"(", "arguments": [)" + WorkspaceEdit::unparse(WE) + R"(]},)";
> +    if (!Edits.empty()) {
> +      WorkspaceEdit WE;
> +      WE.changes = {{Params.textDocument.uri.uri, std::move(Edits)}};
> +      Commands.push_back(json::obj{
> +          {"title", llvm::formatv("Apply FixIt {0}", D.message)},
> +          {"command", ExecuteCommandParams::CLANGD_APPLY_FIX_COMMAND},
> +          {"arguments", {WE}},
> +      });
> +    }
>    }
> -  if (!Commands.empty())
> -    Commands.pop_back();
> -  C.reply("[" + Commands + "]");
> +  C.reply(std::move(Commands));
>  }
> 
>  void ClangdLSPServer::onCompletion(Ctx C, TextDocumentPositionParams &Params)
> {
> @@ -177,15 +182,7 @@ void ClangdLSPServer::onCompletion(Ctx C
>                            // had an API that would allow to attach callbacks
> to
>                            // futures returned by ClangdServer.
>                     .Value;
> -
> -  std::string Completions;
> -  for (const auto &Item : Items) {
> -    Completions += CompletionItem::unparse(Item);
> -    Completions += ",";
> -  }
> -  if (!Completions.empty())
> -    Completions.pop_back();
> -  C.reply("[" + Completions + "]");
> +  C.reply(json::ary(Items));
>  }
> 
>  void ClangdLSPServer::onSignatureHelp(Ctx C,
> @@ -195,7 +192,7 @@ void ClangdLSPServer::onSignatureHelp(Ct
>        Position{Params.position.line, Params.position.character});
>    if (!SignatureHelp)
>      return C.replyError(-32602, llvm::toString(SignatureHelp.takeError()));
> -  C.reply(SignatureHelp::unparse(SignatureHelp->Value));
> +  C.reply(SignatureHelp->Value);
>  }
> 
>  void ClangdLSPServer::onGoToDefinition(Ctx C,
> @@ -205,22 +202,14 @@ void ClangdLSPServer::onGoToDefinition(C
>        Position{Params.position.line, Params.position.character});
>    if (!Items)
>      return C.replyError(-32602, llvm::toString(Items.takeError()));
> -
> -  std::string Locations;
> -  for (const auto &Item : Items->Value) {
> -    Locations += Location::unparse(Item);
> -    Locations += ",";
> -  }
> -  if (!Locations.empty())
> -    Locations.pop_back();
> -  C.reply("[" + Locations + "]");
> +  C.reply(json::ary(Items->Value));
>  }
> 
>  void ClangdLSPServer::onSwitchSourceHeader(Ctx C,
>                                             TextDocumentIdentifier &Params) {
>    llvm::Optional<Path> Result = Server.switchSourceHeader(Params.uri.file);
>    std::string ResultUri;
> -  C.reply(Result ? URI::unparse(URI::fromFile(*Result)) : R"("")");
> +  C.reply(Result ? URI::fromFile(*Result).uri : "");
>  }
> 
>  ClangdLSPServer::ClangdLSPServer(JSONOutput &Out, unsigned AsyncThreadsCount,
> @@ -270,17 +259,16 @@ ClangdLSPServer::getFixIts(StringRef Fil
> 
>  void ClangdLSPServer::onDiagnosticsReady(
>      PathRef File, Tagged<std::vector<DiagWithFixIts>> Diagnostics) {
> -  std::string DiagnosticsJSON;
> +  json::ary DiagnosticsJSON;
> 
>    DiagnosticToReplacementMap LocalFixIts; // Temporary storage
>    for (auto &DiagWithFixes : Diagnostics.Value) {
>      auto Diag = DiagWithFixes.Diag;
> -    DiagnosticsJSON +=
> -        R"({"range":)" + Range::unparse(Diag.range) +
> -        R"(,"severity":)" + std::to_string(Diag.severity) +
> -        R"(,"message":")" + llvm::yaml::escape(Diag.message) +
> -        R"("},)";
> -
> +    DiagnosticsJSON.push_back(json::obj{
> +        {"range", Diag.range},
> +        {"severity", Diag.severity},
> +        {"message", Diag.message},
> +    });
>      // We convert to Replacements to become independent of the SourceManager.
>      auto &FixItsForDiagnostic = LocalFixIts[Diag];
>      std::copy(DiagWithFixes.FixIts.begin(), DiagWithFixes.FixIts.end(),
> @@ -295,10 +283,13 @@ void ClangdLSPServer::onDiagnosticsReady
>    }
> 
>    // Publish diagnostics.
> -  if (!DiagnosticsJSON.empty())
> -    DiagnosticsJSON.pop_back(); // Drop trailing comma.
> -  Out.writeMessage(
> -
> R"({"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"uri"
> :")" +
> -      URI::fromFile(File).uri + R"(","diagnostics":[)" + DiagnosticsJSON +
> -      R"(]}})");
> +  Out.writeMessage(json::obj{
> +      {"jsonrpc", "2.0"},
> +      {"method", "textDocument/publishDiagnostics"},
> +      {"params",
> +       json::obj{
> +           {"uri", URI::fromFile(File)},
> +           {"diagnostics", std::move(DiagnosticsJSON)},
> +       }},
> +  });
>  }
> 
> Added: clang-tools-extra/trunk/clangd/JSONExpr.cpp
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/clangd/JSONExpr.cpp?rev=317486&view=auto
> ==============================================================================
> --- clang-tools-extra/trunk/clangd/JSONExpr.cpp (added)
> +++ clang-tools-extra/trunk/clangd/JSONExpr.cpp Mon Nov  6 07:40:30 2017
> @@ -0,0 +1,216 @@
> +#include "JSONExpr.h"
> +
> +#include "llvm/Support/Format.h"
> +
> +namespace clang {
> +namespace clangd {
> +namespace json {
> +using namespace llvm;
> +
> +void Expr::copyFrom(const Expr &M) {
> +  Type = M.Type;
> +  switch (Type) {
> +  case T_Null:
> +  case T_Boolean:
> +  case T_Number:
> +    memcpy(Union.buffer, M.Union.buffer, sizeof(Union.buffer));
> +    break;
> +  case T_StringRef:
> +    create<StringRef>(M.as<StringRef>());
> +    break;
> +  case T_String:
> +    create<std::string>(M.as<std::string>());
> +    break;
> +  case T_Object:
> +    create<Object>(M.as<Object>());
> +    break;
> +  case T_Array:
> +    create<Array>(M.as<Array>());
> +    break;
> +  }
> +}
> +
> +void Expr::moveFrom(const Expr &&M) {
> +  Type = M.Type;
> +  switch (Type) {
> +  case T_Null:
> +  case T_Boolean:
> +  case T_Number:
> +    memcpy(Union.buffer, M.Union.buffer, sizeof(Union.buffer));
> +    break;
> +  case T_StringRef:
> +    create<StringRef>(M.as<StringRef>());
> +    break;
> +  case T_String:
> +    create<std::string>(std::move(M.as<std::string>()));
> +    M.Type = T_Null;
> +    break;
> +  case T_Object:
> +    create<Object>(std::move(M.as<Object>()));
> +    M.Type = T_Null;
> +    break;
> +  case T_Array:
> +    create<Array>(std::move(M.as<Array>()));
> +    M.Type = T_Null;
> +    break;
> +  }
> +}
> +
> +void Expr::destroy() {
> +  switch (Type) {
> +  case T_Null:
> +  case T_Boolean:
> +  case T_Number:
> +    break;
> +  case T_StringRef:
> +    as<StringRef>().~StringRef();
> +    break;
> +  case T_String:
> +    as<std::string>().~basic_string();
> +    break;
> +  case T_Object:
> +    as<Object>().~Object();
> +    break;
> +  case T_Array:
> +    as<Array>().~Array();
> +    break;
> +  }
> +}
> +
> +} // namespace json
> +} // namespace clangd
> +} // namespace clang
> +
> +namespace {
> +void quote(llvm::raw_ostream &OS, llvm::StringRef S) {
> +  OS << '\"';
> +  for (unsigned char C : S) {
> +    if (C == 0x22 || C == 0x5C)
> +      OS << '\\';
> +    if (C >= 0x20) {
> +      OS << C;
> +      continue;
> +    }
> +    OS << '\\';
> +    switch (C) {
> +    // A few characters are common enough to make short escapes worthwhile.
> +    case '\t':
> +      OS << 't';
> +      break;
> +    case '\n':
> +      OS << 'n';
> +      break;
> +    case '\r':
> +      OS << 'r';
> +      break;
> +    default:
> +      OS << 'u';
> +      llvm::write_hex(OS, C, llvm::HexPrintStyle::Lower, 4);
> +      break;
> +    }
> +  }
> +  OS << '\"';
> +}
> +
> +enum IndenterAction {
> +  Indent,
> +  Outdent,
> +  Newline,
> +  Space,
> +};
> +} // namespace
> +
> +// Prints JSON. The indenter can be used to control formatting.
> +template <typename Indenter>
> +void clang::clangd::json::Expr::print(raw_ostream &OS,
> +                                      const Indenter &I) const {
> +  switch (Type) {
> +  case T_Null:
> +    OS << "null";
> +    break;
> +  case T_Boolean:
> +    OS << (as<bool>() ? "true" : "false");
> +    break;
> +  case T_Number:
> +    OS << format("%g", as<double>());
> +    break;
> +  case T_StringRef:
> +    quote(OS, as<StringRef>());
> +    break;
> +  case T_String:
> +    quote(OS, as<std::string>());
> +    break;
> +  case T_Object: {
> +    bool Comma = false;
> +    OS << '{';
> +    I(Indent);
> +    for (const auto &P : as<Expr::Object>()) {
> +      if (Comma)
> +        OS << ',';
> +      Comma = true;
> +      I(Newline);
> +      quote(OS, P.first);
> +      OS << ':';
> +      I(Space);
> +      P.second.print(OS, I);
> +    }
> +    I(Outdent);
> +    if (Comma)
> +      I(Newline);
> +    OS << '}';
> +    break;
> +  }
> +  case T_Array: {
> +    bool Comma = false;
> +    OS << '[';
> +    I(Indent);
> +    for (const auto &E : as<Expr::Array>()) {
> +      if (Comma)
> +        OS << ',';
> +      Comma = true;
> +      I(Newline);
> +      E.print(OS, I);
> +    }
> +    I(Outdent);
> +    if (Comma)
> +      I(Newline);
> +    OS << ']';
> +    break;
> +  }
> +  }
> +}
> +
> +llvm::raw_ostream &clang::clangd::json::operator<<(raw_ostream &OS,
> +                                                   const Expr &E) {
> +  E.print(OS, [](IndenterAction A) { /*ignore*/ });
> +  return OS;
> +}
> +
> +void llvm::format_provider<clang::clangd::json::Expr>::format(
> +    const clang::clangd::json::Expr &E, raw_ostream &OS, StringRef Options) {
> +  if (Options.empty()) {
> +    OS << E;
> +    return;
> +  }
> +  unsigned IndentAmount = 0;
> +  if (Options.getAsInteger(/*Radix=*/10, IndentAmount))
> +    assert(false && "json::Expr format options should be an integer");
> +  unsigned IndentLevel = 0;
> +  E.print(OS, [&](IndenterAction A) {
> +    switch (A) {
> +    case Newline:
> +      OS << '\n';
> +      OS.indent(IndentLevel);
> +      break;
> +    case Space:
> +      OS << ' ';
> +      break;
> +    case Indent:
> +      IndentLevel += IndentAmount;
> +      break;
> +    case Outdent:
> +      IndentLevel -= IndentAmount;
> +      break;
> +    };
> +  });
> +}
> 
> Added: clang-tools-extra/trunk/clangd/JSONExpr.h
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/clangd/JSONExpr.h?rev=317486&view=auto
> ==============================================================================
> --- clang-tools-extra/trunk/clangd/JSONExpr.h (added)
> +++ clang-tools-extra/trunk/clangd/JSONExpr.h Mon Nov  6 07:40:30 2017
> @@ -0,0 +1,247 @@
> +//===--- JSONExpr.h - composable JSON expressions ---------------*- C++ -*-
> ===//
> +//
> +//                     The LLVM Compiler Infrastructure
> +//
> +// This file is distributed under the University of Illinois Open Source
> +// License. See LICENSE.TXT for details.
> +//
> +//===---------------------------------------------------------------------
> ===//
> +
> +#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_JSON_H
> +#define LLVM_CLANG_TOOLS_EXTRA_CLANGD_JSON_H
> +
> +#include <map>
> +
> +#include "llvm/ADT/SmallVector.h"
> +#include "llvm/ADT/StringRef.h"
> +#include "llvm/Support/FormatVariadic.h"
> +#include "llvm/Support/raw_ostream.h"
> +
> +namespace clang {
> +namespace clangd {
> +namespace json {
> +
> +// An Expr is an opaque temporary JSON structure used to compose documents.
> +// They can be copied, but should generally be moved.
> +//
> +// You can implicitly construct literals from:
> +//   - strings: std::string, SmallString, formatv, StringRef, char*
> +//              (char*, and StringRef are references, not copies!)
> +//   - numbers
> +//   - booleans
> +//   - null: nullptr
> +//   - arrays: {"foo", 42.0, false}
> +//   - serializable things: any T with a T::unparse(const T&) -> Expr
> +//
> +// They can also be constructed from object/array helpers:
> +//   - json::obj is a type like map<StringExpr, Expr>
> +//   - json::ary is a type like vector<Expr>
> +// These can be list-initialized, or used to build up collections in a loop.
> +// json::ary(Collection) converts all items in a collection to Exprs.
> +//
> +// Exprs can be serialized to JSON:
> +//   1) raw_ostream << Expr                    // Basic formatting.
> +//   2) raw_ostream << formatv("{0}", Expr)    // Basic formatting.
> +//   3) raw_ostream << formatv("{0:2}", Expr)  // Pretty-print with indent 2.
> +class Expr {
> +public:
> +  class Object;
> +  class ObjectKey;
> +  class Array;
> +
> +  // It would be nice to have Expr() be null. But that would make {} null
> too...
> +  Expr(const Expr &M) { copyFrom(M); }
> +  Expr(Expr &&M) { moveFrom(std::move(M)); }
> +  // "cheating" move-constructor for moving from initializer_list.
> +  Expr(const Expr &&M) { moveFrom(std::move(M)); }
> +  Expr(std::initializer_list<Expr> Elements) : Expr(Array(Elements)) {}
> +  Expr(Array &&Elements) : Type(T_Array) {
> create<Array>(std::move(Elements)); }
> +  Expr(Object &&Properties) : Type(T_Object) {
> +    create<Object>(std::move(Properties));
> +  }
> +  // Strings: types with value semantics.
> +  Expr(std::string &&V) : Type(T_String) { create<std::string>(std::move(V));
> }
> +  Expr(const std::string &V) : Type(T_String) { create<std::string>(V); }
> +  Expr(const llvm::SmallVectorImpl<char> &V) : Type(T_String) {
> +    create<std::string>(V.begin(), V.end());
> +  }
> +  Expr(const llvm::formatv_object_base &V) : Expr(V.str()){};
> +  // Strings: types with reference semantics.
> +  Expr(llvm::StringRef V) : Type(T_StringRef) { create<llvm::StringRef>(V); }
> +  Expr(const char *V) : Type(T_StringRef) { create<llvm::StringRef>(V); }
> +  Expr(std::nullptr_t) : Type(T_Null) {}
> +  // Prevent implicit conversions to boolean.
> +  template <typename T, typename = typename std::enable_if<
> +                            std::is_same<T, bool>::value>::type>
> +  Expr(T B) : Type(T_Boolean) {
> +    create<bool>(B);
> +  }
> +  // Numbers: arithmetic types that are not boolean.
> +  template <
> +      typename T,
> +      typename = typename std::enable_if<std::is_arithmetic<T>::value>::type,
> +      typename = typename std::enable_if<std::integral_constant<
> +          bool, !std::is_same<T, bool>::value>::value>::type>
> +  Expr(T D) : Type(T_Number) {
> +    create<double>(D);
> +  }
> +  // Types with a static T::unparse function returning an Expr.
> +  // FIXME: should this be a free unparse() function found by ADL?
> +  template <typename T,
> +            typename = typename std::enable_if<std::is_same<
> +                Expr, decltype(T::unparse(*(const T *)nullptr))>::value>>
> +  Expr(const T &V) : Expr(T::unparse(V)) {}
> +
> +  Expr &operator=(const Expr &M) {
> +    destroy();
> +    copyFrom(M);
> +    return *this;
> +  }
> +  Expr &operator=(Expr &&M) {
> +    destroy();
> +    moveFrom(std::move(M));
> +    return *this;
> +  }
> +  ~Expr() { destroy(); }
> +
> +  friend llvm::raw_ostream &operator<<(llvm::raw_ostream &, const Expr &);
> +
> +private:
> +  void destroy();
> +  void copyFrom(const Expr &M);
> +  // We allow moving from *const* Exprs, by marking all members as mutable!
> +  // This hack is needed to support initializer-list syntax efficiently.
> +  // (std::initializer_list<T> is a container of const T).
> +  void moveFrom(const Expr &&M);
> +
> +  template <typename T, typename... U> void create(U &&... V) {
> +    new (&as<T>()) T(std::forward<U>(V)...);
> +  }
> +  template <typename T> T &as() const {
> +    return *reinterpret_cast<T *>(Union.buffer);
> +  }
> +
> +  template <typename Indenter>
> +  void print(llvm::raw_ostream &, const Indenter &) const;
> +  friend struct llvm::format_provider<clang::clangd::json::Expr>;
> +
> +  enum ExprType : char {
> +    T_Null,
> +    T_Boolean,
> +    T_Number,
> +    T_StringRef,
> +    T_String,
> +    T_Object,
> +    T_Array,
> +  };
> +  mutable ExprType Type;
> +
> +public:
> +  // ObjectKey is a used to capture keys in Expr::Objects. It's like Expr
> but:
> +  //   - only strings are allowed
> +  //   - it's copyable (for std::map)
> +  //   - we're slightly more eager to copy, to allow efficient key compares
> +  //   - it's optimized for the string literal case (Owned == nullptr)
> +  class ObjectKey {
> +  public:
> +    ObjectKey(const char *S) : Data(S) {}
> +    ObjectKey(llvm::StringRef S) : Data(S) {}
> +    ObjectKey(std::string &&V)
> +        : Owned(new std::string(std::move(V))), Data(*Owned) {}
> +    ObjectKey(const std::string &V) : Owned(new std::string(V)), Data(*Owned)
> {}
> +    ObjectKey(const llvm::SmallVectorImpl<char> &V)
> +        : ObjectKey(std::string(V.begin(), V.end())) {}
> +    ObjectKey(const llvm::formatv_object_base &V) : ObjectKey(V.str()) {}
> +
> +    ObjectKey(const ObjectKey &C) { *this = C; }
> +    ObjectKey(ObjectKey &&C) = default;
> +    ObjectKey &operator=(const ObjectKey &C) {
> +      if (C.Owned) {
> +        Owned.reset(new std::string(*C.Owned));
> +        Data = *Owned;
> +      } else {
> +        Data = C.Data;
> +      }
> +      return *this;
> +    }
> +    ObjectKey &operator=(ObjectKey &&) = default;
> +
> +    operator llvm::StringRef() const { return Data; }
> +
> +    friend bool operator<(const ObjectKey &L, const ObjectKey &R) {
> +      return L.Data < R.Data;
> +    }
> +
> +    // "cheating" move-constructor for moving from initializer_list.
> +    ObjectKey(const ObjectKey &&V) {
> +      Owned = std::move(V.Owned);
> +      Data = V.Data;
> +    }
> +
> +  private:
> +    mutable std::unique_ptr<std::string> Owned; // mutable for cheating.
> +    llvm::StringRef Data;
> +  };
> +
> +  class Object : public std::map<ObjectKey, Expr> {
> +  public:
> +    explicit Object() {}
> +    // Use a custom struct for list-init, because pair forces extra copies.
> +    struct KV;
> +    explicit Object(std::initializer_list<KV> Properties);
> +
> +    // Allow [] as if Expr was default-constructible as null.
> +    Expr &operator[](const ObjectKey &K) {
> +      return emplace(K, Expr(nullptr)).first->second;
> +    }
> +    Expr &operator[](ObjectKey &&K) {
> +      return emplace(std::move(K), Expr(nullptr)).first->second;
> +    }
> +  };
> +
> +  class Array : public std::vector<Expr> {
> +  public:
> +    explicit Array() {}
> +    explicit Array(std::initializer_list<Expr> Elements) {
> +      reserve(Elements.size());
> +      for (const Expr &V : Elements)
> +        emplace_back(std::move(V));
> +    };
> +    template <typename Collection> explicit Array(const Collection &C) {
> +      for (const auto &V : C)
> +        emplace_back(V);
> +    }
> +  };
> +
> +private:
> +  mutable llvm::AlignedCharArrayUnion<bool, double, llvm::StringRef,
> +                                      std::string, Array, Object>
> +      Union;
> +};
> +
> +struct Expr::Object::KV {
> +  ObjectKey K;
> +  Expr V;
> +};
> +
> +inline Expr::Object::Object(std::initializer_list<KV> Properties) {
> +  for (const auto &P : Properties)
> +    emplace(std::move(P.K), std::move(P.V));
> +}
> +
> +// Give Expr::{Object,Array} more convenient names for literal use.
> +using obj = Expr::Object;
> +using ary = Expr::Array;
> +
> +} // namespace json
> +} // namespace clangd
> +} // namespace clang
> +
> +namespace llvm {
> +template <> struct format_provider<clang::clangd::json::Expr> {
> +  static void format(const clang::clangd::json::Expr &, raw_ostream &,
> +                     StringRef);
> +};
> +} // namespace llvm
> +
> +#endif
> 
> Modified: clang-tools-extra/trunk/clangd/JSONRPCDispatcher.cpp
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/clangd/JSONRPCDispatcher.cpp?rev=317486&r1=317485&r2=317486&view=d
> iff
> ==============================================================================
> --- clang-tools-extra/trunk/clangd/JSONRPCDispatcher.cpp (original)
> +++ clang-tools-extra/trunk/clangd/JSONRPCDispatcher.cpp Mon Nov  6 07:40:30
> 2017
> @@ -8,6 +8,7 @@
>  //===----------------------------------------------------------------------
> ===//
> 
>  #include "JSONRPCDispatcher.h"
> +#include "JSONExpr.h"
>  #include "ProtocolHandlers.h"
>  #include "Trace.h"
>  #include "llvm/ADT/SmallString.h"
> @@ -18,17 +19,22 @@
>  using namespace clang;
>  using namespace clangd;
> 
> -void JSONOutput::writeMessage(const Twine &Message) {
> -  llvm::SmallString<128> Storage;
> -  StringRef M = Message.toStringRef(Storage);
> +void JSONOutput::writeMessage(const json::Expr &Message) {
> +  std::string S;
> +  llvm::raw_string_ostream OS(S);
> +  if (Pretty)
> +    OS << llvm::formatv("{0:2}", Message);
> +  else
> +    OS << Message;
> +  OS.flush();
> 
>    std::lock_guard<std::mutex> Guard(StreamMutex);
>    // Log without headers.
> -  Logs << "--> " << M << '\n';
> +  Logs << "--> " << S << '\n';
>    Logs.flush();
> 
>    // Emit message with header.
> -  Outs << "Content-Length: " << M.size() << "\r\n\r\n" << M;
> +  Outs << "Content-Length: " << S.size() << "\r\n\r\n" << S;
>    Outs.flush();
>  }
> 
> @@ -47,30 +53,38 @@ void JSONOutput::mirrorInput(const Twine
>    InputMirror->flush();
>  }
> 
> -void RequestContext::reply(const llvm::Twine &Result) {
> -  if (ID.empty()) {
> +void RequestContext::reply(json::Expr &&Result) {
> +  if (!ID) {
>      Out.log("Attempted to reply to a notification!\n");
>      return;
>    }
> -  Out.writeMessage(llvm::Twine(R"({"jsonrpc":"2.0","id":)") + ID +
> -                   R"(,"result":)" + Result + "}");
> +  Out.writeMessage(json::obj{
> +      {"jsonrpc", "2.0"},
> +      {"id", *ID},
> +      {"result", std::move(Result)},
> +  });
>  }
> 
>  void RequestContext::replyError(int code, const llvm::StringRef &Message) {
>    Out.log("Error " + llvm::Twine(code) + ": " + Message + "\n");
> -  if (!ID.empty()) {
> -    Out.writeMessage(llvm::Twine(R"({"jsonrpc":"2.0","id":)") + ID +
> -                     R"(,"error":{"code":)" + llvm::Twine(code) +
> -                     R"(,"message":")" + llvm::yaml::escape(Message) +
> -                     R"("}})");
> +  if (ID) {
> +    Out.writeMessage(json::obj{
> +        {"jsonrpc", "2.0"},
> +        {"id", *ID},
> +        {"error", json::obj{{"code", code}, {"message", Message}}},
> +    });
>    }
>  }
> 
> -void RequestContext::call(StringRef Method, StringRef Params) {
> +void RequestContext::call(StringRef Method, json::Expr &&Params) {
>    // FIXME: Generate/Increment IDs for every request so that we can get
> proper
>    // replies once we need to.
> -  Out.writeMessage(llvm::Twine(R"({"jsonrpc":"2.0","id":1,"method":")" +
> -                               Method + R"(","params":)" + Params + R"(})"));
> +  Out.writeMessage(json::obj{
> +      {"jsonrpc", "2.0"},
> +      {"id", 1},
> +      {"method", Method},
> +      {"params", std::move(Params)},
> +  });
>  }
> 
>  void JSONRPCDispatcher::registerHandler(StringRef Method, Handler H) {
> @@ -80,7 +94,7 @@ void JSONRPCDispatcher::registerHandler(
> 
>  static void
>  callHandler(const llvm::StringMap<JSONRPCDispatcher::Handler> &Handlers,
> -            llvm::yaml::ScalarNode *Method, llvm::yaml::ScalarNode *Id,
> +            llvm::yaml::ScalarNode *Method, llvm::Optional<json::Expr> ID,
>              llvm::yaml::MappingNode *Params,
>              const JSONRPCDispatcher::Handler &UnknownHandler, JSONOutput
> &Out) {
>    llvm::SmallString<64> MethodStorage;
> @@ -88,7 +102,7 @@ callHandler(const llvm::StringMap<JSONRP
>    auto I = Handlers.find(MethodStr);
>    auto &Handler = I != Handlers.end() ? I->second : UnknownHandler;
>    trace::Span Tracer(MethodStr);
> -  Handler(RequestContext(Out, Id ? Id->getRawValue() : ""), Params);
> +  Handler(RequestContext(Out, std::move(ID)), Params);
>  }
> 
>  bool JSONRPCDispatcher::call(StringRef Content, JSONOutput &Out) const {
> @@ -106,7 +120,7 @@ bool JSONRPCDispatcher::call(StringRef C
>    llvm::yaml::ScalarNode *Version = nullptr;
>    llvm::yaml::ScalarNode *Method = nullptr;
>    llvm::yaml::MappingNode *Params = nullptr;
> -  llvm::yaml::ScalarNode *Id = nullptr;
> +  llvm::Optional<json::Expr> ID;
>    for (auto &NextKeyValue : *Object) {
>      auto *KeyString =
>          dyn_cast_or_null<llvm::yaml::ScalarNode>(NextKeyValue.getKey());
> @@ -127,7 +141,18 @@ bool JSONRPCDispatcher::call(StringRef C
>      } else if (KeyValue == "method") {
>        Method = dyn_cast<llvm::yaml::ScalarNode>(Value);
>      } else if (KeyValue == "id") {
> -      Id = dyn_cast<llvm::yaml::ScalarNode>(Value);
> +      // ID may be either a string or a number.
> +      if (auto *IdNode = dyn_cast<llvm::yaml::ScalarNode>(Value)) {
> +        llvm::SmallString<32> S;
> +        llvm::StringRef V = IdNode->getValue(S);
> +        if (IdNode->getRawValue().startswith("\"")) {
> +          ID.emplace(V.str());
> +        } else {
> +          double D;
> +          if (!V.getAsDouble(D))
> +            ID.emplace(D);
> +        }
> +      }
>      } else if (KeyValue == "params") {
>        if (!Method)
>          return false;
> @@ -136,7 +161,7 @@ bool JSONRPCDispatcher::call(StringRef C
>        // because it will break clients that put the id after params. A
> possible
>        // fix would be to split the parsing and execution phases.
>        Params = dyn_cast<llvm::yaml::MappingNode>(Value);
> -      callHandler(Handlers, Method, Id, Params, UnknownHandler, Out);
> +      callHandler(Handlers, Method, std::move(ID), Params, UnknownHandler,
> Out);
>        return true;
>      } else {
>        return false;
> @@ -147,7 +172,7 @@ bool JSONRPCDispatcher::call(StringRef C
>    // leftovers.
>    if (!Method)
>      return false;
> -  callHandler(Handlers, Method, Id, nullptr, UnknownHandler, Out);
> +  callHandler(Handlers, Method, std::move(ID), nullptr, UnknownHandler, Out);
> 
>    return true;
>  }
> 
> Modified: clang-tools-extra/trunk/clangd/JSONRPCDispatcher.h
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/clangd/JSONRPCDispatcher.h?rev=317486&r1=317485&r2=317486&view=dif
> f
> ==============================================================================
> --- clang-tools-extra/trunk/clangd/JSONRPCDispatcher.h (original)
> +++ clang-tools-extra/trunk/clangd/JSONRPCDispatcher.h Mon Nov  6 07:40:30
> 2017
> @@ -10,6 +10,7 @@
>  #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_JSONRPCDISPATCHER_H
>  #define LLVM_CLANG_TOOLS_EXTRA_CLANGD_JSONRPCDISPATCHER_H
> 
> +#include "JSONExpr.h"
>  #include "Logger.h"
>  #include "clang/Basic/LLVM.h"
>  #include "llvm/ADT/SmallString.h"
> @@ -26,11 +27,11 @@ namespace clangd {
>  class JSONOutput : public Logger {
>  public:
>    JSONOutput(llvm::raw_ostream &Outs, llvm::raw_ostream &Logs,
> -             llvm::raw_ostream *InputMirror = nullptr)
> -      : Outs(Outs), Logs(Logs), InputMirror(InputMirror) {}
> +             llvm::raw_ostream *InputMirror = nullptr, bool Pretty = false)
> +      : Outs(Outs), Logs(Logs), InputMirror(InputMirror), Pretty(Pretty) {}
> 
>    /// Emit a JSONRPC message.
> -  void writeMessage(const Twine &Message);
> +  void writeMessage(const json::Expr &Result);
> 
>    /// Write to the logging stream.
>    /// No newline is implicitly added. (TODO: we should fix this!)
> @@ -45,6 +46,7 @@ private:
>    llvm::raw_ostream &Outs;
>    llvm::raw_ostream &Logs;
>    llvm::raw_ostream *InputMirror;
> +  bool Pretty;
> 
>    std::mutex StreamMutex;
>  };
> @@ -52,18 +54,19 @@ private:
>  /// Context object passed to handlers to allow replies.
>  class RequestContext {
>  public:
> -  RequestContext(JSONOutput &Out, StringRef ID) : Out(Out), ID(ID) {}
> +  RequestContext(JSONOutput &Out, llvm::Optional<json::Expr> ID)
> +      : Out(Out), ID(std::move(ID)) {}
> 
> -  /// Sends a successful reply. Result should be well-formed JSON.
> -  void reply(const Twine &Result);
> +  /// Sends a successful reply.
> +  void reply(json::Expr &&Result);
>    /// Sends an error response to the client, and logs it.
>    void replyError(int code, const llvm::StringRef &Message);
>    /// Sends a request to the client.
> -  void call(llvm::StringRef Method, StringRef Params);
> +  void call(llvm::StringRef Method, json::Expr &&Params);
> 
>  private:
>    JSONOutput &Out;
> -  llvm::SmallString<64> ID; // Valid JSON, or empty for a notification.
> +  llvm::Optional<json::Expr> ID;
>  };
> 
>  /// Main JSONRPC entry point. This parses the JSONRPC "header" and calls the
> 
> Modified: clang-tools-extra/trunk/clangd/Protocol.cpp
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/clangd/Protocol.cpp?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/clangd/Protocol.cpp (original)
> +++ clang-tools-extra/trunk/clangd/Protocol.cpp Mon Nov  6 07:40:30 2017
> @@ -63,7 +63,7 @@ URI URI::parse(llvm::yaml::ScalarNode *P
>    return URI::fromUri(Param->getValue(Storage));
>  }
> 
> -std::string URI::unparse(const URI &U) { return "\"" + U.uri + "\""; }
> +json::Expr URI::unparse(const URI &U) { return U.uri; }
> 
>  llvm::Optional<TextDocumentIdentifier>
>  TextDocumentIdentifier::parse(llvm::yaml::MappingNode *Params,
> @@ -125,11 +125,11 @@ llvm::Optional<Position> Position::parse
>    return Result;
>  }
> 
> -std::string Position::unparse(const Position &P) {
> -  std::string Result;
> -  llvm::raw_string_ostream(Result)
> -      << llvm::format(R"({"line": %d, "character": %d})", P.line,
> P.character);
> -  return Result;
> +json::Expr Position::unparse(const Position &P) {
> +  return json::obj{
> +      {"line", P.line},
> +      {"character", P.character},
> +  };
>  }
> 
>  llvm::Optional<Range> Range::parse(llvm::yaml::MappingNode *Params,
> @@ -165,20 +165,18 @@ llvm::Optional<Range> Range::parse(llvm:
>    return Result;
>  }
> 
> -std::string Range::unparse(const Range &P) {
> -  std::string Result;
> -  llvm::raw_string_ostream(Result) << llvm::format(
> -      R"({"start": %s, "end": %s})", Position::unparse(P.start).c_str(),
> -      Position::unparse(P.end).c_str());
> -  return Result;
> +json::Expr Range::unparse(const Range &P) {
> +  return json::obj{
> +      {"start", P.start},
> +      {"end", P.end},
> +  };
>  }
> 
> -std::string Location::unparse(const Location &P) {
> -  std::string Result;
> -  llvm::raw_string_ostream(Result) << llvm::format(
> -      R"({"uri": %s, "range": %s})", URI::unparse(P.uri).c_str(),
> -      Range::unparse(P.range).c_str());
> -  return Result;
> +json::Expr Location::unparse(const Location &P) {
> +  return json::obj{
> +      {"uri", P.uri},
> +      {"range", P.range},
> +  };
>  }
> 
>  llvm::Optional<TextDocumentItem>
> @@ -279,25 +277,11 @@ llvm::Optional<TextEdit> TextEdit::parse
>    return Result;
>  }
> 
> -std::string TextEdit::unparse(const TextEdit &P) {
> -  std::string Result;
> -  llvm::raw_string_ostream(Result) << llvm::format(
> -      R"({"range": %s, "newText": "%s"})", Range::unparse(P.range).c_str(),
> -      llvm::yaml::escape(P.newText).c_str());
> -  return Result;
> -}
> -
> -std::string TextEdit::unparse(const std::vector<TextEdit> &TextEdits) {
> -  // Fuse all edits into one big JSON array.
> -  std::string Edits;
> -  for (auto &TE : TextEdits) {
> -    Edits += TextEdit::unparse(TE);
> -    Edits += ',';
> -  }
> -  if (!Edits.empty())
> -    Edits.pop_back();
> -
> -  return "[" + Edits + "]";
> +json::Expr TextEdit::unparse(const TextEdit &P) {
> +  return json::obj{
> +      {"range", P.range},
> +      {"newText", P.newText},
> +  };
>  }
> 
>  namespace {
> @@ -611,11 +595,11 @@ FormattingOptions::parse(llvm::yaml::Map
>    return Result;
>  }
> 
> -std::string FormattingOptions::unparse(const FormattingOptions &P) {
> -  std::string Result;
> -  llvm::raw_string_ostream(Result) << llvm::format(
> -      R"({"tabSize": %d, "insertSpaces": %d})", P.tabSize, P.insertSpaces);
> -  return Result;
> +json::Expr FormattingOptions::unparse(const FormattingOptions &P) {
> +  return json::obj{
> +      {"tabSize", P.tabSize},
> +      {"insertSpaces", P.insertSpaces},
> +  };
>  }
> 
>  llvm::Optional<DocumentRangeFormattingParams>
> @@ -982,28 +966,18 @@ ExecuteCommandParams::parse(llvm::yaml::
>    return Result;
>  }
> 
> -std::string WorkspaceEdit::unparse(const WorkspaceEdit &WE) {
> -  std::string Changes;
> -  for (auto &Change : *WE.changes) {
> -    Changes += llvm::formatv(R"("{0}": {1})", Change.first,
> -                             TextEdit::unparse(Change.second));
> -    Changes += ',';
> -  }
> -  if (!Changes.empty())
> -    Changes.pop_back();
> -
> -  std::string Result;
> -  llvm::raw_string_ostream(Result)
> -      << llvm::format(R"({"changes": {%s}})", Changes.c_str());
> -  return Result;
> +json::Expr WorkspaceEdit::unparse(const WorkspaceEdit &WE) {
> +  if (!WE.changes)
> +    return json::obj{};
> +  json::obj FileChanges;
> +  for (auto &Change : *WE.changes)
> +    FileChanges[Change.first] = json::ary(Change.second);
> +  return json::obj{{"changes", std::move(FileChanges)}};
>  }
> 
> -std::string
> +json::Expr
>  ApplyWorkspaceEditParams::unparse(const ApplyWorkspaceEditParams &Params) {
> -  std::string Result;
> -  llvm::raw_string_ostream(Result) << llvm::format(
> -      R"({"edit": %s})", WorkspaceEdit::unparse(Params.edit).c_str());
> -  return Result;
> +  return json::obj{{"edit", Params.edit}};
>  }
> 
>  llvm::Optional<TextDocumentPositionParams>
> @@ -1040,96 +1014,57 @@ TextDocumentPositionParams::parse(llvm::
>    return Result;
>  }
> 
> -std::string CompletionItem::unparse(const CompletionItem &CI) {
> -  std::string Result = "{";
> -  llvm::raw_string_ostream Os(Result);
> +json::Expr CompletionItem::unparse(const CompletionItem &CI) {
>    assert(!CI.label.empty() && "completion item label is required");
> -  Os << R"("label":")" << llvm::yaml::escape(CI.label) << R"(",)";
> +  json::obj Result{{"label", CI.label}};
>    if (CI.kind != CompletionItemKind::Missing)
> -    Os << R"("kind":)" << static_cast<int>(CI.kind) << R"(,)";
> +    Result["kind"] = static_cast<int>(CI.kind);
>    if (!CI.detail.empty())
> -    Os << R"("detail":")" << llvm::yaml::escape(CI.detail) << R"(",)";
> +    Result["detail"] = CI.detail;
>    if (!CI.documentation.empty())
> -    Os << R"("documentation":")" << llvm::yaml::escape(CI.documentation)
> -       << R"(",)";
> +    Result["documentation"] = CI.documentation;
>    if (!CI.sortText.empty())
> -    Os << R"("sortText":")" << llvm::yaml::escape(CI.sortText) << R"(",)";
> +    Result["sortText"] = CI.sortText;
>    if (!CI.filterText.empty())
> -    Os << R"("filterText":")" << llvm::yaml::escape(CI.filterText) <<
> R"(",)";
> +    Result["filterText"] = CI.filterText;
>    if (!CI.insertText.empty())
> -    Os << R"("insertText":")" << llvm::yaml::escape(CI.insertText) <<
> R"(",)";
> -  if (CI.insertTextFormat != InsertTextFormat::Missing) {
> -    Os << R"("insertTextFormat":)" << static_cast<int>(CI.insertTextFormat)
> -       << R"(,)";
> -  }
> +    Result["insertText"] = CI.insertText;
> +  if (CI.insertTextFormat != InsertTextFormat::Missing)
> +    Result["insertTextFormat"] = static_cast<int>(CI.insertTextFormat);
>    if (CI.textEdit)
> -    Os << R"("textEdit":)" << TextEdit::unparse(*CI.textEdit) << ',';
> -  if (!CI.additionalTextEdits.empty()) {
> -    Os << R"("additionalTextEdits":[)";
> -    for (const auto &Edit : CI.additionalTextEdits)
> -      Os << TextEdit::unparse(Edit) << ",";
> -    Os.flush();
> -    // The list additionalTextEdits is guaranteed nonempty at this point.
> -    // Replace the trailing comma with right brace.
> -    Result.back() = ']';
> -  }
> -  Os.flush();
> -  // Label is required, so Result is guaranteed to have a trailing comma.
> -  Result.back() = '}';
> -  return Result;
> +    Result["textEdit"] = *CI.textEdit;
> +  if (!CI.additionalTextEdits.empty())
> +    Result["additionalTextEdits"] = json::ary(CI.additionalTextEdits);
> +  return std::move(Result);
>  }
> 
> -std::string ParameterInformation::unparse(const ParameterInformation &PI) {
> -  std::string Result = "{";
> -  llvm::raw_string_ostream Os(Result);
> +json::Expr ParameterInformation::unparse(const ParameterInformation &PI) {
>    assert(!PI.label.empty() && "parameter information label is required");
> -  Os << R"("label":")" << llvm::yaml::escape(PI.label) << '\"';
> +  json::obj Result{{"label", PI.label}};
>    if (!PI.documentation.empty())
> -    Os << R"(,"documentation":")" << llvm::yaml::escape(PI.documentation)
> -       << '\"';
> -  Os << '}';
> -  Os.flush();
> -  return Result;
> +    Result["documentation"] = PI.documentation;
> +  return std::move(Result);
>  }
> 
> -std::string SignatureInformation::unparse(const SignatureInformation &SI) {
> -  std::string Result = "{";
> -  llvm::raw_string_ostream Os(Result);
> +json::Expr SignatureInformation::unparse(const SignatureInformation &SI) {
>    assert(!SI.label.empty() && "signature information label is required");
> -  Os << R"("label":")" << llvm::yaml::escape(SI.label) << '\"';
> +  json::obj Result{
> +      {"label", SI.label},
> +      {"parameters", json::ary(SI.parameters)},
> +  };
>    if (!SI.documentation.empty())
> -    Os << R"(,"documentation":")" << llvm::yaml::escape(SI.documentation)
> -       << '\"';
> -  Os << R"(,"parameters":[)";
> -  for (const auto &Parameter : SI.parameters) {
> -    Os << ParameterInformation::unparse(Parameter) << ',';
> -  }
> -  Os.flush();
> -  if (SI.parameters.empty())
> -    Result.push_back(']');
> -  else
> -    Result.back() = ']'; // Replace the last `,` with an `]`.
> -  Result.push_back('}');
> -  return Result;
> +    Result["documentation"] = SI.documentation;
> +  return std::move(Result);
>  }
> 
> -std::string SignatureHelp::unparse(const SignatureHelp &SH) {
> -  std::string Result = "{";
> -  llvm::raw_string_ostream Os(Result);
> +json::Expr SignatureHelp::unparse(const SignatureHelp &SH) {
>    assert(SH.activeSignature >= 0 &&
>           "Unexpected negative value for number of active signatures.");
>    assert(SH.activeParameter >= 0 &&
>           "Unexpected negative value for active parameter index");
> -  Os << R"("activeSignature":)" << SH.activeSignature
> -     << R"(,"activeParameter":)" << SH.activeParameter <<
> R"(,"signatures":[)";
> -  for (const auto &Signature : SH.signatures) {
> -    Os << SignatureInformation::unparse(Signature) << ',';
> -  }
> -  Os.flush();
> -  if (SH.signatures.empty())
> -    Result.push_back(']');
> -  else
> -    Result.back() = ']'; // Replace the last `,` with an `]`.
> -  Result.push_back('}');
> -  return Result;
> +  return json::obj{
> +      {"activeSignature", SH.activeSignature},
> +      {"activeParameter", SH.activeParameter},
> +      {"signatures", json::ary(SH.signatures)},
> +  };
>  }
> 
> Modified: clang-tools-extra/trunk/clangd/Protocol.h
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/clangd/Protocol.h?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/clangd/Protocol.h (original)
> +++ clang-tools-extra/trunk/clangd/Protocol.h Mon Nov  6 07:40:30 2017
> @@ -21,6 +21,7 @@
>  #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANGD_PROTOCOL_H
>  #define LLVM_CLANG_TOOLS_EXTRA_CLANGD_PROTOCOL_H
> 
> +#include "JSONExpr.h"
>  #include "llvm/ADT/Optional.h"
>  #include "llvm/Support/YAMLParser.h"
>  #include <string>
> @@ -39,7 +40,7 @@ struct URI {
>    static URI fromFile(llvm::StringRef file);
> 
>    static URI parse(llvm::yaml::ScalarNode *Param);
> -  static std::string unparse(const URI &U);
> +  static json::Expr unparse(const URI &U);
> 
>    friend bool operator==(const URI &LHS, const URI &RHS) {
>      return LHS.uri == RHS.uri;
> @@ -80,7 +81,7 @@ struct Position {
> 
>    static llvm::Optional<Position> parse(llvm::yaml::MappingNode *Params,
>                                          clangd::Logger &Logger);
> -  static std::string unparse(const Position &P);
> +  static json::Expr unparse(const Position &P);
>  };
> 
>  struct Range {
> @@ -99,7 +100,7 @@ struct Range {
> 
>    static llvm::Optional<Range> parse(llvm::yaml::MappingNode *Params,
>                                       clangd::Logger &Logger);
> -  static std::string unparse(const Range &P);
> +  static json::Expr unparse(const Range &P);
>  };
> 
>  struct Location {
> @@ -119,7 +120,7 @@ struct Location {
>      return std::tie(LHS.uri, LHS.range) < std::tie(RHS.uri, RHS.range);
>    }
> 
> -  static std::string unparse(const Location &P);
> +  static json::Expr unparse(const Location &P);
>  };
> 
>  struct Metadata {
> @@ -140,8 +141,7 @@ struct TextEdit {
> 
>    static llvm::Optional<TextEdit> parse(llvm::yaml::MappingNode *Params,
>                                          clangd::Logger &Logger);
> -  static std::string unparse(const TextEdit &P);
> -  static std::string unparse(const std::vector<TextEdit> &TextEdits);
> +  static json::Expr unparse(const TextEdit &P);
>  };
> 
>  struct TextDocumentItem {
> @@ -283,7 +283,7 @@ struct FormattingOptions {
> 
>    static llvm::Optional<FormattingOptions>
>    parse(llvm::yaml::MappingNode *Params, clangd::Logger &Logger);
> -  static std::string unparse(const FormattingOptions &P);
> +  static json::Expr unparse(const FormattingOptions &P);
>  };
> 
>  struct DocumentRangeFormattingParams {
> @@ -392,7 +392,7 @@ struct WorkspaceEdit {
> 
>    static llvm::Optional<WorkspaceEdit> parse(llvm::yaml::MappingNode *Params,
>                                               clangd::Logger &Logger);
> -  static std::string unparse(const WorkspaceEdit &WE);
> +  static json::Expr unparse(const WorkspaceEdit &WE);
>  };
> 
>  /// Exact commands are not specified in the protocol so we define the
> @@ -420,7 +420,7 @@ struct ExecuteCommandParams {
> 
>  struct ApplyWorkspaceEditParams {
>    WorkspaceEdit edit;
> -  static std::string unparse(const ApplyWorkspaceEditParams &Params);
> +  static json::Expr unparse(const ApplyWorkspaceEditParams &Params);
>  };
> 
>  struct TextDocumentPositionParams {
> @@ -527,7 +527,7 @@ struct CompletionItem {
>    //
>    // data?: any - A data entry field that is preserved on a completion item
>    //              between a completion and a completion resolve request.
> -  static std::string unparse(const CompletionItem &P);
> +  static json::Expr unparse(const CompletionItem &P);
>  };
> 
>  /// A single parameter of a particular signature.
> @@ -539,7 +539,7 @@ struct ParameterInformation {
>    /// The documentation of this parameter. Optional.
>    std::string documentation;
> 
> -  static std::string unparse(const ParameterInformation &);
> +  static json::Expr unparse(const ParameterInformation &);
>  };
> 
>  /// Represents the signature of something callable.
> @@ -554,7 +554,7 @@ struct SignatureInformation {
>    /// The parameters of this signature.
>    std::vector<ParameterInformation> parameters;
> 
> -  static std::string unparse(const SignatureInformation &);
> +  static json::Expr unparse(const SignatureInformation &);
>  };
> 
>  /// Represents the signature of a callable.
> @@ -569,7 +569,7 @@ struct SignatureHelp {
>    /// The active parameter of the active signature.
>    int activeParameter = 0;
> 
> -  static std::string unparse(const SignatureHelp &);
> +  static json::Expr unparse(const SignatureHelp &);
>  };
> 
>  } // namespace clangd
> 
> Modified: clang-tools-extra/trunk/clangd/tool/ClangdMain.cpp
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/clangd/tool/ClangdMain.cpp?rev=317486&r1=317485&r2=317486&view=dif
> f
> ==============================================================================
> --- clang-tools-extra/trunk/clangd/tool/ClangdMain.cpp (original)
> +++ clang-tools-extra/trunk/clangd/tool/ClangdMain.cpp Mon Nov  6 07:40:30
> 2017
> @@ -41,6 +41,10 @@ static llvm::cl::opt<bool> EnableSnippet
>          "Present snippet completions instead of plaintext completions"),
>      llvm::cl::init(false));
> 
> +static llvm::cl::opt<bool>
> +    PrettyPrint("pretty", llvm::cl::desc("Pretty-print JSON output"),
> +                llvm::cl::init(false));
> +
>  static llvm::cl::opt<bool> RunSynchronously(
>      "run-synchronously",
>      llvm::cl::desc("Parse on main thread. If set, -j is ignored"),
> @@ -104,7 +108,8 @@ int main(int argc, char *argv[]) {
>    llvm::raw_ostream &Outs = llvm::outs();
>    llvm::raw_ostream &Logs = llvm::errs();
>    JSONOutput Out(Outs, Logs,
> -                 InputMirrorStream ? InputMirrorStream.getPointer() :
> nullptr);
> +                 InputMirrorStream ? InputMirrorStream.getPointer() :
> nullptr,
> +                 PrettyPrint);
> 
>    // If --compile-commands-dir arg was invoked, check value and override
> default
>    // path.
> 
> Modified: clang-tools-extra/trunk/test/clangd/authority-less-uri.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/authority-less-
> uri.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/authority-less-uri.test (original)
> +++ clang-tools-extra/trunk/test/clangd/authority-less-uri.test Mon Nov  6
> 07:40:30 2017
> @@ -1,4 +1,4 @@
> -# RUN: clangd -run-synchronously < %s | FileCheck %s
> +# RUN: clangd -pretty -run-synchronously < %s | FileCheck -strict-whitespace
> %s
>  # It is absolutely vital that this file has CRLF line endings.
>  #
>  # Test authority-less URI
> @@ -15,22 +15,34 @@ Content-Length: 146
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:/main.cpp"},"position":{"line":3,"character":5}}}
>  # Test authority-less URI
>  #
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[
> -# CHECK-DAG:
> {"label":"a","kind":5,"detail":"int","sortText":"000035a","filterText":"a","in
> sertText":"a","insertTextFormat":1}
> -# CHECK: ]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +#      CHECK:      "filterText": "fake",
> +# CHECK-NEXT:      "insertText": "fake",
> +# CHECK-NEXT:      "insertTextFormat": 1,
> +# CHECK-NEXT:      "kind": 7,
> +# CHECK-NEXT:      "label": "fake::",
> +# CHECK-NEXT:      "sortText": "000075fake"
> +#      CHECK:  ]
>  Content-Length: 172
> 
> 
> {"jsonrpc":"2.0","id":2,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"uri":"file:///main.cpp","position":{"line":3
> ,"character":5}}}
>  # Test params parsing in the presence of a 1.x-compatible client (inlined
> "uri")
>  #
> -# CHECK: {"jsonrpc":"2.0","id":2,"result":[
> -# CHECK-DAG:
> {"label":"a","kind":5,"detail":"int","sortText":"000035a","filterText":"a","in
> sertText":"a","insertTextFormat":1}
> -# CHECK: ]}
> +#      CHECK:  "id": 2,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +#      CHECK:      "filterText": "fake",
> +# CHECK-NEXT:      "insertText": "fake",
> +# CHECK-NEXT:      "insertTextFormat": 1,
> +# CHECK-NEXT:      "kind": 7,
> +# CHECK-NEXT:      "label": "fake::",
> +# CHECK-NEXT:      "sortText": "000075fake"
> +#      CHECK:  ]
>  Content-Length: 44
> 
>  {"jsonrpc":"2.0","id":3,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":3,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/completion-items-kinds.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/completion-items-
> kinds.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/completion-items-kinds.test (original)
> +++ clang-tools-extra/trunk/test/clangd/completion-items-kinds.test Mon Nov  6
> 07:40:30 2017
> @@ -11,27 +11,26 @@ Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":4,"character":7}}}
>  Content-Length: 58
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[
> +# CHECK: {"id":1,"jsonrpc":"2.0","result":[
>  #
>  # Keyword
> -# CHECK-DAG:
> {"label":"int","kind":14,"sortText":"000050int","filterText":"int","insertText
> ":"int","insertTextFormat":1}
> +# CHECK-DAG:
> {"filterText":"int","insertText":"int","insertTextFormat":1,"kind":14,"label":
> "int","sortText":"000050int"}
>  #
>  # Code pattern
> -# CHECK-DAG:
> {"label":"static_cast<type>(expression)","kind":15,"sortText":"000040static_ca
> st","filterText":"static_cast","insertText":"static_cast<${1:type}>(${2:expres
> sion})","insertTextFormat":2}
> +# CHECK-DAG:
> {"filterText":"static_cast","insertText":"static_cast<${1:type}>(${2:expressio
> n})","insertTextFormat":2,"kind":15,"label":"static_cast<type>(expression)","s
> ortText":"000040static_cast"}
>  #
>  # Struct
> -# CHECK-DAG:
> {"label":"Struct","kind":7,"sortText":"000050Struct","filterText":"Struct","in
> sertText":"Struct","insertTextFormat":1}
> +# CHECK-DAG:
> {"filterText":"Struct","insertText":"Struct","insertTextFormat":1,"kind":7,"la
> bel":"Struct","sortText":"000050Struct"}
>  #
>  # Macro
> -# CHECK-DAG:
> {"label":"MACRO","kind":1,"sortText":"000070MACRO","filterText":"MACRO","inser
> tText":"MACRO","insertTextFormat":1}
> +# CHECK-DAG:
> {"filterText":"MACRO","insertText":"MACRO","insertTextFormat":1,"kind":1,"labe
> l":"MACRO","sortText":"000070MACRO"}
>  #
>  # Variable
> -# CHECK-DAG:
> {"label":"variable","kind":6,"detail":"int","sortText":"000012variable","filte
> rText":"variable","insertText":"variable","insertTextFormat":1}
> +# CHECK-DAG:
> {"detail":"int","filterText":"variable","insertText":"variable","insertTextFor
> mat":1,"kind":6,"label":"variable","sortText":"000012variable"}
>  #
>  # Function
> -# CHECK-DAG:
> {"label":"function()","kind":3,"detail":"int","sortText":"000012function","fil
> terText":"function","insertText":"function()","insertTextFormat":1}
> +# CHECK-DAG:
> {"detail":"int","filterText":"function","insertText":"function()","insertTextF
> ormat":1,"kind":3,"label":"function()","sortText":"000012function"}
>  #
> -#
> -# CHECK: ]}
> +# CHECK-SAME: ]}
> 
>  {"jsonrpc":"2.0","id":3,"method":"shutdown","params":null}
> 
> Modified: clang-tools-extra/trunk/test/clangd/completion-priorities.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/completion-
> priorities.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/completion-priorities.test (original)
> +++ clang-tools-extra/trunk/test/clangd/completion-priorities.test Mon Nov  6
> 07:40:30 2017
> @@ -16,25 +16,24 @@ Content-Length: 151
>  # The order of results returned by codeComplete seems to be
>  # nondeterministic, so we check regardless of order.
>  #
> -# CHECK: {"jsonrpc":"2.0","id":2,"result":[
> -# CHECK-DAG:
> {"label":"pub()","kind":2,"detail":"void","sortText":"000034pub","filterText":
> "pub","insertText":"pub","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"prot()","kind":2,"detail":"void","sortText":"000034prot","filterText
> ":"prot","insertText":"prot","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"priv()","kind":2,"detail":"void","sortText":"000034priv","filterText
> ":"priv","insertText":"priv","insertTextFormat":1}
> -# CHECK: ]}
> +# CHECK: {"id":2,"jsonrpc":"2.0","result":[
> +# CHECK-DAG:
> {"detail":"void","filterText":"pub","insertText":"pub","insertTextFormat":1,"k
> ind":2,"label":"pub()","sortText":"000034pub"}
> +# CHECK-DAG:
> {"detail":"void","filterText":"prot","insertText":"prot","insertTextFormat":1,
> "kind":2,"label":"prot()","sortText":"000034prot"}
> +# CHECK-DAG:
> {"detail":"void","filterText":"priv","insertText":"priv","insertTextFormat":1,
> "kind":2,"label":"priv()","sortText":"000034priv"}
> +# CHECK-SAME: ]}
> 
>  Content-Length: 151
> 
> 
> {"jsonrpc":"2.0","id":3,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":17,"character":4}}}
> -# CHECK: {"jsonrpc":"2.0","id":3,"result":[
> -# CHECK-DAG:
> {"label":"pub()","kind":2,"detail":"void","sortText":"000034pub","filterText":
> "pub","insertText":"pub","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"prot()","kind":2,"detail":"void","sortText":"200034prot","filterText
> ":"prot","insertText":"prot","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"priv()","kind":2,"detail":"void","sortText":"200034priv","filterText
> ":"priv","insertText":"priv","insertTextFormat":1}
> -# CHECK: ]}
> +# CHECK: {"id":3,"jsonrpc":"2.0","result":[
> +# CHECK-DAG:
> {"detail":"void","filterText":"pub","insertText":"pub","insertTextFormat":1,"k
> ind":2,"label":"pub()","sortText":"000034pub"}
> +# CHECK-DAG:
> {"detail":"void","filterText":"prot","insertText":"prot","insertTextFormat":1,
> "kind":2,"label":"prot()","sortText":"200034prot"}
> +# CHECK-DAG:
> {"detail":"void","filterText":"priv","insertText":"priv","insertTextFormat":1,
> "kind":2,"label":"priv()","sortText":"200034priv"}
> +# CHECK-SAME: ]}
> 
>  Content-Length: 58
> 
>  {"jsonrpc":"2.0","id":4,"method":"shutdown","params":null}
> -# CHECK: {"jsonrpc":"2.0","id":4,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/completion-qualifiers.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/completion-
> qualifiers.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/completion-qualifiers.test (original)
> +++ clang-tools-extra/trunk/test/clangd/completion-qualifiers.test Mon Nov  6
> 07:40:30 2017
> @@ -8,15 +8,14 @@ Content-Length: 297
>  Content-Length: 151
> 
> 
> {"jsonrpc":"2.0","id":2,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":11,"character":8}}}
> -# CHECK: {"jsonrpc":"2.0","id":2,"result":[
> -# CHECK-DAG: {"label":"foo()
> const","kind":2,"detail":"int","sortText":"200035foo","filterText":"foo","inse
> rtText":"foo","insertTextFormat":1}
> -# CHECK-DAG: {"label":"bar()
> const","kind":2,"detail":"int","sortText":"000037bar","filterText":"bar","inse
> rtText":"bar","insertTextFormat":1}
> -# CHECK-DAG: {"label":"Foo::foo()
> const","kind":2,"detail":"int","sortText":"000037foo","filterText":"foo","inse
> rtText":"foo","insertTextFormat":1}
> -# CHECK: ]}
> +# CHECK: {"id":2,"jsonrpc":"2.0","result":[
> +# CHECK-DAG:
> {"detail":"int","filterText":"foo","insertText":"foo","insertTextFormat":1,"ki
> nd":2,"label":"foo() const","sortText":"200035foo"}
> +# CHECK-DAG:
> {"detail":"int","filterText":"bar","insertText":"bar","insertTextFormat":1,"ki
> nd":2,"label":"bar() const","sortText":"000037bar"}
> +# CHECK-DAG:
> {"detail":"int","filterText":"foo","insertText":"foo","insertTextFormat":1,"ki
> nd":2,"label":"Foo::foo() const","sortText":"000037foo"}
> +# CHECK-SAME: ]}
>  Content-Length: 44
> 
>  {"jsonrpc":"2.0","id":4,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":4,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/completion-snippet.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/completion-
> snippet.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/completion-snippet.test (original)
> +++ clang-tools-extra/trunk/test/clangd/completion-snippet.test Mon Nov  6
> 07:40:30 2017
> @@ -15,27 +15,27 @@ Content-Length: 148
>  # The order of results returned by codeComplete seems to be
>  # nondeterministic, so we check regardless of order.
>  #
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[
> -# CHECK-DAG:
> {"label":"a","kind":5,"detail":"int","sortText":"000035a","filterText":"a","in
> sertText":"a","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"bb","kind":5,"detail":"int","sortText":"000035bb","filterText":"bb",
> "insertText":"bb","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"ccc","kind":5,"detail":"int","sortText":"000035ccc","filterText":"cc
> c","insertText":"ccc","insertTextFormat":1}
> -# CHECK-DAG: {"label":"operator=(const fake &)","kind":2,"detail":"fake
> &","sortText":"000079operator=","filterText":"operator=","insertText":"operato
> r=(${1:const fake &})","insertTextFormat":2}
> -# CHECK-DAG:
> {"label":"~fake()","kind":4,"detail":"void","sortText":"000079~fake","filterTe
> xt":"~fake","insertText":"~fake()","insertTextFormat":1}
> -# CHECK-DAG: {"label":"f(int i, const float f)
> const","kind":2,"detail":"int","sortText":"000035f","filterText":"f","insertTe
> xt":"f(${1:int i}, ${2:const float f})","insertTextFormat":2}
> -# CHECK: ]}
> +# CHECK: {"id":1,"jsonrpc":"2.0","result":[
> +# CHECK-DAG:
> {"detail":"int","filterText":"a","insertText":"a","insertTextFormat":1,"kind":
> 5,"label":"a","sortText":"000035a"}
> +# CHECK-DAG:
> {"detail":"int","filterText":"bb","insertText":"bb","insertTextFormat":1,"kind
> ":5,"label":"bb","sortText":"000035bb"}
> +# CHECK-DAG:
> {"detail":"int","filterText":"ccc","insertText":"ccc","insertTextFormat":1,"ki
> nd":5,"label":"ccc","sortText":"000035ccc"}
> +# CHECK-DAG: {"detail":"fake
> &","filterText":"operator=","insertText":"operator=(${1:const fake
> &})","insertTextFormat":2,"kind":2,"label":"operator=(const fake
> &)","sortText":"000079operator="}
> +# CHECK-DAG:
> {"detail":"void","filterText":"~fake","insertText":"~fake()","insertTextFormat
> ":1,"kind":4,"label":"~fake()","sortText":"000079~fake"}
> +# CHECK-DAG: {"detail":"int","filterText":"f","insertText":"f(${1:int i},
> ${2:const float f})","insertTextFormat":2,"kind":2,"label":"f(int i, const
> float f) const","sortText":"000035f"}
> +# CHECK-SAME: ]}
>  Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":2,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":3,"character":5}}}
>  # Repeat the completion request, expect the same results.
>  #
> -# CHECK: {"jsonrpc":"2.0","id":2,"result":[
> -# CHECK-DAG:
> {"label":"a","kind":5,"detail":"int","sortText":"000035a","filterText":"a","in
> sertText":"a","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"bb","kind":5,"detail":"int","sortText":"000035bb","filterText":"bb",
> "insertText":"bb","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"ccc","kind":5,"detail":"int","sortText":"000035ccc","filterText":"cc
> c","insertText":"ccc","insertTextFormat":1}
> -# CHECK-DAG: {"label":"operator=(const fake &)","kind":2,"detail":"fake
> &","sortText":"000079operator=","filterText":"operator=","insertText":"operato
> r=(${1:const fake &})","insertTextFormat":2}
> -# CHECK-DAG:
> {"label":"~fake()","kind":4,"detail":"void","sortText":"000079~fake","filterTe
> xt":"~fake","insertText":"~fake()","insertTextFormat":1}
> -# CHECK-DAG: {"label":"f(int i, const float f)
> const","kind":2,"detail":"int","sortText":"000035f","filterText":"f","insertTe
> xt":"f(${1:int i}, ${2:const float f})","insertTextFormat":2}
> -# CHECK: ]}
> +# CHECK: {"id":2,"jsonrpc":"2.0","result":[
> +# CHECK-DAG:
> {"detail":"int","filterText":"a","insertText":"a","insertTextFormat":1,"kind":
> 5,"label":"a","sortText":"000035a"}
> +# CHECK-DAG:
> {"detail":"int","filterText":"bb","insertText":"bb","insertTextFormat":1,"kind
> ":5,"label":"bb","sortText":"000035bb"}
> +# CHECK-DAG:
> {"detail":"int","filterText":"ccc","insertText":"ccc","insertTextFormat":1,"ki
> nd":5,"label":"ccc","sortText":"000035ccc"}
> +# CHECK-DAG: {"detail":"fake
> &","filterText":"operator=","insertText":"operator=(${1:const fake
> &})","insertTextFormat":2,"kind":2,"label":"operator=(const fake
> &)","sortText":"000079operator="}
> +# CHECK-DAG:
> {"detail":"void","filterText":"~fake","insertText":"~fake()","insertTextFormat
> ":1,"kind":4,"label":"~fake()","sortText":"000079~fake"}
> +# CHECK-DAG: {"detail":"int","filterText":"f","insertText":"f(${1:int i},
> ${2:const float f})","insertTextFormat":2,"kind":2,"label":"f(int i, const
> float f) const","sortText":"000035f"}
> +# CHECK-SAME: ]}
>  # Update the source file and check for completions again.
>  Content-Length: 226
> 
> @@ -44,15 +44,12 @@ Content-Length: 226
>  Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":3,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":3,"character":5}}}
> -# Repeat the completion request, expect the same results.
> -#
> -# CHECK: {"jsonrpc":"2.0","id":3,"result":[
> -# CHECK-DAG: {"label":"func()","kind":2,"detail":"int (*)(int,
> int)","sortText":"000034func","filterText":"func","insertText":"func()","inser
> tTextFormat":1}
> -# CHECK: ]}
> +# CHECK: {"id":3,"jsonrpc":"2.0","result":[
> +# CHECK-DAG: {"detail":"int (*)(int,
> int)","filterText":"func","insertText":"func()","insertTextFormat":1,"kind":2,
> "label":"func()","sortText":"000034func"}
> +# CHECK-SAME: ]}
>  Content-Length: 44
> 
>  {"jsonrpc":"2.0","id":4,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":4,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/completion.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/completion.test?rev=317486&r1=317485&r2=317486&view=di
> ff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/completion.test (original)
> +++ clang-tools-extra/trunk/test/clangd/completion.test Mon Nov  6 07:40:30
> 2017
> @@ -15,27 +15,27 @@ Content-Length: 148
>  # The order of results returned by codeComplete seems to be
>  # nondeterministic, so we check regardless of order.
>  #
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[
> -# CHECK-DAG:
> {"label":"a","kind":5,"detail":"int","sortText":"000035a","filterText":"a","in
> sertText":"a","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"bb","kind":5,"detail":"int","sortText":"000035bb","filterText":"bb",
> "insertText":"bb","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"ccc","kind":5,"detail":"int","sortText":"000035ccc","filterText":"cc
> c","insertText":"ccc","insertTextFormat":1}
> -# CHECK-DAG: {"label":"operator=(const fake &)","kind":2,"detail":"fake
> &","sortText":"000079operator=","filterText":"operator=","insertText":"operato
> r=","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"~fake()","kind":4,"detail":"void","sortText":"000079~fake","filterTe
> xt":"~fake","insertText":"~fake","insertTextFormat":1}
> -# CHECK-DAG: {"label":"f(int i, const float f)
> const","kind":2,"detail":"int","sortText":"000035f","filterText":"f","insertTe
> xt":"f","insertTextFormat":1}
> -# CHECK: ]}
> +# CHECK: {"id":1,"jsonrpc":"2.0","result":[
> +# CHECK-DAG:
> {"detail":"int","filterText":"a","insertText":"a","insertTextFormat":1,"kind":
> 5,"label":"a","sortText":"000035a"}
> +# CHECK-DAG:
> {"detail":"int","filterText":"bb","insertText":"bb","insertTextFormat":1,"kind
> ":5,"label":"bb","sortText":"000035bb"}
> +# CHECK-DAG:
> {"detail":"int","filterText":"ccc","insertText":"ccc","insertTextFormat":1,"ki
> nd":5,"label":"ccc","sortText":"000035ccc"}
> +# CHECK-DAG: {"detail":"fake
> &","filterText":"operator=","insertText":"operator=","insertTextFormat":1,"kin
> d":2,"label":"operator=(const fake &)","sortText":"000079operator="}
> +# CHECK-DAG:
> {"detail":"void","filterText":"~fake","insertText":"~fake","insertTextFormat":
> 1,"kind":4,"label":"~fake()","sortText":"000079~fake"}
> +# CHECK-DAG:
> {"detail":"int","filterText":"f","insertText":"f","insertTextFormat":1,"kind":
> 2,"label":"f(int i, const float f) const","sortText":"000035f"}
> +# CHECK-SAME: ]}
>  Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":2,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":3,"character":5}}}
>  # Repeat the completion request, expect the same results.
>  #
> -# CHECK: {"jsonrpc":"2.0","id":2,"result":[
> -# CHECK-DAG:
> {"label":"a","kind":5,"detail":"int","sortText":"000035a","filterText":"a","in
> sertText":"a","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"bb","kind":5,"detail":"int","sortText":"000035bb","filterText":"bb",
> "insertText":"bb","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"ccc","kind":5,"detail":"int","sortText":"000035ccc","filterText":"cc
> c","insertText":"ccc","insertTextFormat":1}
> -# CHECK-DAG: {"label":"operator=(const fake &)","kind":2,"detail":"fake
> &","sortText":"000079operator=","filterText":"operator=","insertText":"operato
> r=","insertTextFormat":1}
> -# CHECK-DAG:
> {"label":"~fake()","kind":4,"detail":"void","sortText":"000079~fake","filterTe
> xt":"~fake","insertText":"~fake","insertTextFormat":1}
> -# CHECK-DAG: {"label":"f(int i, const float f)
> const","kind":2,"detail":"int","sortText":"000035f","filterText":"f","insertTe
> xt":"f","insertTextFormat":1}
> -# CHECK: ]}
> +# CHECK: {"id":2,"jsonrpc":"2.0","result":[
> +# CHECK-DAG:
> {"detail":"int","filterText":"a","insertText":"a","insertTextFormat":1,"kind":
> 5,"label":"a","sortText":"000035a"}
> +# CHECK-DAG:
> {"detail":"int","filterText":"bb","insertText":"bb","insertTextFormat":1,"kind
> ":5,"label":"bb","sortText":"000035bb"}
> +# CHECK-DAG:
> {"detail":"int","filterText":"ccc","insertText":"ccc","insertTextFormat":1,"ki
> nd":5,"label":"ccc","sortText":"000035ccc"}
> +# CHECK-DAG: {"detail":"fake
> &","filterText":"operator=","insertText":"operator=","insertTextFormat":1,"kin
> d":2,"label":"operator=(const fake &)","sortText":"000079operator="}
> +# CHECK-DAG:
> {"detail":"void","filterText":"~fake","insertText":"~fake","insertTextFormat":
> 1,"kind":4,"label":"~fake()","sortText":"000079~fake"}
> +# CHECK-DAG:
> {"detail":"int","filterText":"f","insertText":"f","insertTextFormat":1,"kind":
> 2,"label":"f(int i, const float f) const","sortText":"000035f"}
> +# CHECK-SAME: ]}
>  # Update the source file and check for completions again.
>  Content-Length: 226
> 
> @@ -46,13 +46,12 @@ Content-Length: 148
> 
> {"jsonrpc":"2.0","id":3,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":3,"character":5}}}
>  # Repeat the completion request, expect the same results.
>  #
> -# CHECK: {"jsonrpc":"2.0","id":3,"result":[
> -# CHECK-DAG: {"label":"func()","kind":2,"detail":"int (*)(int,
> int)","sortText":"000034func","filterText":"func","insertText":"func","insertT
> extFormat":1}
> -# CHECK: ]}
> +# CHECK: {"id":3,"jsonrpc":"2.0","result":[
> +# CHECK-DAG: {"detail":"int (*)(int,
> int)","filterText":"func","insertText":"func","insertTextFormat":1,"kind":2,"l
> abel":"func()","sortText":"000034func"}
> +# CHECK-SAME: ]}
>  Content-Length: 44
> 
>  {"jsonrpc":"2.0","id":4,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":4,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/definitions.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/definitions.test?rev=317486&r1=317485&r2=317486&view=d
> iff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/definitions.test (original)
> +++ clang-tools-extra/trunk/test/clangd/definitions.test Mon Nov  6 07:40:30
> 2017
> @@ -1,4 +1,4 @@
> -# RUN: clangd -run-synchronously < %s | FileCheck %s
> +# RUN: clangd -pretty -run-synchronously < %s | FileCheck -strict-whitespace
> %s
>  # It is absolutely vital that this file has CRLF line endings.
>  #
>  Content-Length: 125
> @@ -13,14 +13,44 @@ Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":2,"character":0}}}
>  # Go to local variable
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 1, "character": 0}, "end": {"line": 1,
> "character": 5}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 5,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 0,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":2,"character":1}}}
>  # Go to local variable, end of token
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 1, "character": 0}, "end": {"line": 1,
> "character": 5}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 5,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 0,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 214
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":2},"contentChanges":[{"text":"struct Foo
> {\nint x;\n};\nint main() {\n  Foo bar = { x : 1 };\n}\n"}]}}
> @@ -29,8 +59,23 @@ Content-Length: 149
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":4,"character":14}}}
>  # Go to field, GNU old-style field designator
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 1, "character": 0}, "end": {"line": 1,
> "character": 5}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 5,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 0,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 215
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":3},"contentChanges":[{"text":"struct Foo
> {\nint x;\n};\nint main() {\n  Foo baz = { .x = 2 };\n}\n"}]}}
> @@ -39,8 +84,23 @@ Content-Length: 149
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":4,"character":15}}}
>  # Go to field, field designator
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 1, "character": 0}, "end": {"line": 1,
> "character": 5}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 5,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 0,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 187
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":4},"contentChanges":[{"text":"int main() {\n
> main();\n   return 0;\n}"}]}}
> @@ -49,8 +109,23 @@ Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":1,"character":3}}}
>  # Go to function declaration, function call
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 0, "character": 0}, "end": {"line": 3,
> "character": 1}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 1,
> +# CHECK-NEXT:          "line": 3
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 0,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 208
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":5},"contentChanges":[{"text":"struct Foo
> {\n};\nint main() {\n   Foo bar;\n   return 0;\n}\n"}]}}
> @@ -59,8 +134,23 @@ Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":3,"character":3}}}
>  # Go to struct declaration, new struct instance
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 0, "character": 0}, "end": {"line": 1,
> "character": 1}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 1,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 0,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 231
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":5},"contentChanges":[{"text":"namespace n1
> {\nstruct Foo {\n};\n}\nint main() {\n   n1::Foo bar;\n   return 0;\n}\n"}]}}
> @@ -69,8 +159,23 @@ Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":5,"character":4}}}
>  # Go to struct declaration, new struct instance, qualified name
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 0, "character": 0}, "end": {"line": 3,
> "character": 1}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 1,
> +# CHECK-NEXT:          "line": 3
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 0,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 215
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":6},"contentChanges":[{"text":"struct Foo {\n
> int x;\n};\nint main() {\n   Foo bar;\n   bar.x;\n}\n"}]}}
> @@ -79,8 +184,23 @@ Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":5,"character":7}}}
>  # Go to field declaration, field reference
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 1, "character": 2}, "end": {"line": 1,
> "character": 7}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 7,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 2,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 220
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"struct Foo {\n
> void x();\n};\nint main() {\n   Foo bar;\n   bar.x();\n}\n"}]}}
> @@ -89,8 +209,23 @@ Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":5,"character":7}}}
>  # Go to method declaration, method call
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 1, "character": 2}, "end": {"line": 1,
> "character": 10}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 10,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 2,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 240
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"struct Foo
> {\n};\ntypedef Foo TypedefFoo;\nint main() {\n   TypedefFoo bar;\n   return
> 0;\n}\n"}]}}
> @@ -99,8 +234,23 @@ Content-Length: 149
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":4,"character":10}}}
>  # Go to typedef
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 2, "character": 0}, "end": {"line": 2,
> "character": 22}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 22,
> +# CHECK-NEXT:          "line": 2
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 0,
> +# CHECK-NEXT:          "line": 2
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 254
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"template
> <typename MyTemplateParam>\nvoid foo() {\n MyTemplateParam a;\n}\nint main()
> {\n   return 0;\n}\n"}]}}
> @@ -109,8 +259,9 @@ Content-Length: 149
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":2,"character":13}}}
>  # Go to template type parameter. Fails until clangIndex is modified to handle
> those.
> -# no-CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 0, "character": 10}, "end": {"line": 0,
> "character": 34}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": []
>  Content-Length: 256
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"namespace ns
> {\nstruct Foo {\nstatic void bar() {}\n};\n}\nint main() {\n
> ns::Foo::bar();\n   return 0;\n}\n"}]}}
> @@ -119,8 +270,23 @@ Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":6,"character":4}}}
>  # Go to namespace, static method call
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 0, "character": 0}, "end": {"line": 4,
> "character": 1}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 1,
> +# CHECK-NEXT:          "line": 4
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 0,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 265
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"namespace ns
> {\nstruct Foo {\n  int field;\n  Foo(int param) : field(param) {}\n};\n}\nint
> main() {\n   return 0;\n}\n"}]}}
> @@ -128,9 +294,24 @@ Content-Length: 265
>  Content-Length: 149
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":3,"character":21}}}
> -# Go to field, member initializer
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 2, "character": 2}, "end": {"line": 2,
> "character": 11}}}]}
> -
> +# Go to field, member initializer
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 11,
> +# CHECK-NEXT:          "line": 2
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 2,
> +# CHECK-NEXT:          "line": 2
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 204
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"#define
> MY_MACRO 0\nint main() {\n  return MY_MACRO;\n}\n"}]}}
> @@ -139,8 +320,23 @@ Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":2,"character":9}}}
>  # Go to macro.
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///{{([A-Za-
> z]:/)?}}main.cpp", "range": {"start": {"line": 0, "character": 8}, "end":
> {"line": 0, "character": 18}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 18,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 8,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 217
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///main.cpp","version":7},"contentChanges":[{"text":"#define FOO
> 1\nint a = FOO;\n#define FOO 2\nint b = FOO;\n#undef FOO\n"}]}}
> @@ -149,29 +345,77 @@ Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":1,"character":8}}}
>  # Go to macro, re-defined later
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///{{([A-Za-
> z]:/)?}}main.cpp", "range": {"start": {"line": 0, "character": 8}, "end":
> {"line": 0, "character": 13}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 13,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 8,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":3,"character":8}}}
>  # Go to macro, undefined later
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 2, "character": 8}, "end": {"line": 2,
> "character": 13}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 13,
> +# CHECK-NEXT:          "line": 2
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 8,
> +# CHECK-NEXT:          "line": 2
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 148
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///main.cpp"},"position":{"line":4,"character":7}}}
>  # Go to macro, being undefined
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"uri": "file:///main.cpp",
> "range": {"start": {"line": 2, "character": 8}, "end": {"line": 2,
> "character": 13}}}]}
> -
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 13,
> +# CHECK-NEXT:          "line": 2
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 8,
> +# CHECK-NEXT:          "line": 2
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      "uri": "file:///main.cpp"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 156
> 
> 
> {"jsonrpc":"2.0","id":2,"method":"textDocument/definition","params":{"textDocu
> ment":{"uri":"file:///doesnotexist.cpp"},"position":{"line":4,"character":7}}}
> -# CHECK: {"jsonrpc":"2.0","id":2,"error":{"code":-
> 32602,"message":"findDefinitions called on non-added file"}}
> -
> +#      CHECK:  "error": {
> +# CHECK-NEXT:    "code": -32602,
> +# CHECK-NEXT:    "message": "findDefinitions called on non-added file"
> +# CHECK-NEXT:  },
> +# CHECK-NEXT:  "id": 2,
> +# CHECK-NEXT:  "jsonrpc": "2.0"
>  Content-Length: 48
> 
>  {"jsonrpc":"2.0","id":10000,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":10000,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/diagnostics-preamble.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/diagnostics-
> preamble.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/diagnostics-preamble.test (original)
> +++ clang-tools-extra/trunk/test/clangd/diagnostics-preamble.test Mon Nov  6
> 07:40:30 2017
> @@ -1,4 +1,4 @@
> -# RUN: clangd -run-synchronously < %s | FileCheck %s
> +# RUN: clangd -pretty -run-synchronously < %s | FileCheck -strict-whitespace
> %s
>  # It is absolutely vital that this file has CRLF line endings.
>  #
>  Content-Length: 125
> @@ -8,12 +8,14 @@ Content-Length: 125
>  Content-Length: 206
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"ur
> i":"file:///main.cpp","languageId":"cpp","version":1,"text":"#ifndef
> FOO\n#define FOO\nint a;\n#else\nint a = b;#endif\n\n\n"}}}
> -# CHECK:
> {"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"uri":"f
> ile:///main.cpp","diagnostics":[]}}
> -
> +#      CHECK:  "method": "textDocument/publishDiagnostics",
> +# CHECK-NEXT:  "params": {
> +# CHECK-NEXT:    "diagnostics": [],
> +# CHECK-NEXT:    "uri": "file:///main.cpp"
> +# CHECK-NEXT:  }
>  Content-Length: 58
> 
>  {"jsonrpc":"2.0","id":2,"method":"shutdown","params":null}
> -# CHECK: {"jsonrpc":"2.0","id":2,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/diagnostics.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/diagnostics.test?rev=317486&r1=317485&r2=317486&view=d
> iff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/diagnostics.test (original)
> +++ clang-tools-extra/trunk/test/clangd/diagnostics.test Mon Nov  6 07:40:30
> 2017
> @@ -1,4 +1,4 @@
> -# RUN: clangd -run-synchronously < %s | FileCheck %s
> +# RUN: clangd -pretty -run-synchronously < %s | FileCheck -strict-whitespace
> %s
>  # It is absolutely vital that this file has CRLF line endings.
>  #
>  Content-Length: 125
> @@ -8,14 +8,43 @@ Content-Length: 125
>  Content-Length: 152
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"ur
> i":"file:///foo.c","languageId":"c","version":1,"text":"void main() {}"}}}
> -#
> -# CHECK:
> {"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"uri":"f
> ile:///foo.c","diagnostics":[{"range":{"start": {"line": 0, "character": 1},
> "end": {"line": 0, "character": 1}},"severity":2,"message":"return type of
> 'main' is not 'int'"},{"range":{"start": {"line": 0, "character": 1}, "end":
> {"line": 0, "character": 1}},"severity":3,"message":"change return type to
> 'int'"}]}}
> -#
> -#
> +#      CHECK:  "method": "textDocument/publishDiagnostics",
> +# CHECK-NEXT:  "params": {
> +# CHECK-NEXT:    "diagnostics": [
> +# CHECK-NEXT:      {
> +# CHECK-NEXT:        "message": "return type of 'main' is not 'int'",
> +# CHECK-NEXT:        "range": {
> +# CHECK-NEXT:          "end": {
> +# CHECK-NEXT:            "character": 1,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          "start": {
> +# CHECK-NEXT:            "character": 1,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "severity": 2
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      {
> +# CHECK-NEXT:        "message": "change return type to 'int'",
> +# CHECK-NEXT:        "range": {
> +# CHECK-NEXT:          "end": {
> +# CHECK-NEXT:            "character": 1,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          "start": {
> +# CHECK-NEXT:            "character": 1,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "severity": 3
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    ],
> +# CHECK-NEXT:    "uri": "file:///foo.c"
> +# CHECK-NEXT:  }
>  Content-Length: 44
> 
>  {"jsonrpc":"2.0","id":5,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":5,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/did-change-watch-files.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/did-change-watch-
> files.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/did-change-watch-files.test (original)
> +++ clang-tools-extra/trunk/test/clangd/did-change-watch-files.test Mon Nov  6
> 07:40:30 2017
> @@ -5,18 +5,7 @@
>  Content-Length: 143
> 
> 
> {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"processId":123,"rootU
> ri":"file:///path/to/workspace","capabilities":{},"trace":"off"}}
> -# CHECK: Content-Length: 466
> -# CHECK: {"jsonrpc":"2.0","id":0,"result":{"capabilities":{
> -# CHECK:   "textDocumentSync": 1,
> -# CHECK:   "documentFormattingProvider": true,
> -# CHECK:   "documentRangeFormattingProvider": true,
> -# CHECK:   "documentOnTypeFormattingProvider":
> {"firstTriggerCharacter":"}","moreTriggerCharacter":[]},
> -# CHECK:   "codeActionProvider": true,
> -# CHECK:   "completionProvider": {"resolveProvider": false,
> "triggerCharacters": [".",">",":"]},
> -# CHECK:   "definitionProvider": true
> -# CHECK: }}}
> -#
> -#Normal case
> +# Normal case.
>  Content-Length: 217
> 
> 
> {"jsonrpc":"2.0","method":"workspace/didChangeWatchedFiles","params":{"changes
> ":[{"uri":"file:///path/to/file.cpp","type":1},{"uri":"file:///path/to/file2.c
> pp","type":2},{"uri":"file:///path/to/file3.cpp","type":3}]}}
> 
> Modified: clang-tools-extra/trunk/test/clangd/execute-command.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/execute-
> command.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/execute-command.test (original)
> +++ clang-tools-extra/trunk/test/clangd/execute-command.test Mon Nov  6
> 07:40:30 2017
> @@ -1,4 +1,4 @@
> -# RUN: clangd -run-synchronously < %s | FileCheck %s
> +# RUN: clangd -pretty -run-synchronously < %s | FileCheck -strict-whitespace
> %s
>  # It is absolutely vital that this file has CRLF line endings.
>  #
>  Content-Length: 125
> @@ -8,9 +8,54 @@ Content-Length: 125
>  Content-Length: 180
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"ur
> i":"file:///foo.c","languageId":"c","version":1,"text":"int main(int i, char
> **a) { if (i = 2) {}}"}}}
> -#
> -# CHECK:
> {"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"uri":"f
> ile:///foo.c","diagnostics":[{"range":{"start": {"line": 0, "character": 35},
> "end": {"line": 0, "character": 35}},"severity":2,"message":"using the result
> of an assignment as a condition without parentheses"},{"range":{"start":
> {"line": 0, "character": 35}, "end": {"line": 0, "character":
> 35}},"severity":3,"message":"place parentheses around the assignment to
> silence this warning"},{"range":{"start": {"line": 0, "character": 35}, "end":
> {"line": 0, "character": 35}},"severity":3,"message":"use '==' to turn this
> assignment into an equality comparison"}]}}
> -#
> +#      CHECK:  "method": "textDocument/publishDiagnostics",
> +# CHECK-NEXT:  "params": {
> +# CHECK-NEXT:    "diagnostics": [
> +# CHECK-NEXT:      {
> +# CHECK-NEXT:        "message": "using the result of an assignment as a
> condition without parentheses",
> +# CHECK-NEXT:        "range": {
> +# CHECK-NEXT:          "end": {
> +# CHECK-NEXT:            "character": 35,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          "start": {
> +# CHECK-NEXT:            "character": 35,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "severity": 2
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      {
> +# CHECK-NEXT:        "message": "place parentheses around the assignment to
> silence this warning",
> +# CHECK-NEXT:        "range": {
> +# CHECK-NEXT:          "end": {
> +# CHECK-NEXT:            "character": 35,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          "start": {
> +# CHECK-NEXT:            "character": 35,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "severity": 3
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      {
> +# CHECK-NEXT:        "message": "use '==' to turn this assignment into an
> equality comparison",
> +# CHECK-NEXT:        "range": {
> +# CHECK-NEXT:          "end": {
> +# CHECK-NEXT:            "character": 35,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          "start": {
> +# CHECK-NEXT:            "character": 35,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "severity": 3
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    ],
> +# CHECK-NEXT:    "uri": "file:///foo.c"
> +# CHECK-NEXT:  }
>  Content-Length: 72
> 
>  {"jsonrpc":"2.0","id":3,"method":"workspace/executeCommand","params":{}}
> 
> Modified: clang-tools-extra/trunk/test/clangd/extra-flags.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/extra-
> flags.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/extra-flags.test (original)
> +++ clang-tools-extra/trunk/test/clangd/extra-flags.test Mon Nov  6 07:40:30
> 2017
> @@ -1,4 +1,4 @@
> -# RUN: clangd -run-synchronously < %s | FileCheck %s
> +# RUN: clangd -pretty -run-synchronously < %s | FileCheck -strict-whitespace
> %s
>  # It is absolutely vital that this file has CRLF line endings.
>  #
>  Content-Length: 125
> @@ -8,17 +8,80 @@ Content-Length: 125
>  Content-Length: 205
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"ur
> i":"file:///foo.c","languageId":"c","version":1,"text":"int main() { int i;
> return i; }"},"metadata":{"extraFlags":["-Wall"]}}}
> -# CHECK:
> {"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"uri":"f
> ile:///foo.c","diagnostics":[{"range":{"start": {"line": 0, "character": 28},
> "end": {"line": 0, "character": 28}},"severity":2,"message":"variable 'i' is
> uninitialized when used here"},{"range":{"start": {"line": 0, "character":
> 19}, "end": {"line": 0, "character": 19}},"severity":3,"message":"initialize
> the variable 'i' to silence this warning"}]}}
> -#
> +#      CHECK:  "method": "textDocument/publishDiagnostics",
> +# CHECK-NEXT:  "params": {
> +# CHECK-NEXT:    "diagnostics": [
> +# CHECK-NEXT:      {
> +# CHECK-NEXT:        "message": "variable 'i' is uninitialized when used
> here",
> +# CHECK-NEXT:        "range": {
> +# CHECK-NEXT:          "end": {
> +# CHECK-NEXT:            "character": 28,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          "start": {
> +# CHECK-NEXT:            "character": 28,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "severity": 2
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      {
> +# CHECK-NEXT:        "message": "initialize the variable 'i' to silence this
> warning",
> +# CHECK-NEXT:        "range": {
> +# CHECK-NEXT:          "end": {
> +# CHECK-NEXT:            "character": 19,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          "start": {
> +# CHECK-NEXT:            "character": 19,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "severity": 3
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    ],
> +# CHECK-NEXT:    "uri": "file:///foo.c"
> +# CHECK-NEXT:  }
>  Content-Length: 175
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///foo.c","version":2},"contentChanges":[{"text":"int main() { int
> i; return i; }"}]}}
> -# CHECK:
> {"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"uri":"f
> ile:///foo.c","diagnostics":[{"range":{"start": {"line": 0, "character": 28},
> "end": {"line": 0, "character": 28}},"severity":2,"message":"variable 'i' is
> uninitialized when used here"},{"range":{"start": {"line": 0, "character":
> 19}, "end": {"line": 0, "character": 19}},"severity":3,"message":"initialize
> the variable 'i' to silence this warning"}]}}
> -#
> +#      CHECK:  "method": "textDocument/publishDiagnostics",
> +# CHECK-NEXT:  "params": {
> +# CHECK-NEXT:    "diagnostics": [
> +# CHECK-NEXT:      {
> +# CHECK-NEXT:        "message": "variable 'i' is uninitialized when used
> here",
> +# CHECK-NEXT:        "range": {
> +# CHECK-NEXT:          "end": {
> +# CHECK-NEXT:            "character": 28,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          "start": {
> +# CHECK-NEXT:            "character": 28,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "severity": 2
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      {
> +# CHECK-NEXT:        "message": "initialize the variable 'i' to silence this
> warning",
> +# CHECK-NEXT:        "range": {
> +# CHECK-NEXT:          "end": {
> +# CHECK-NEXT:            "character": 19,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          "start": {
> +# CHECK-NEXT:            "character": 19,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "severity": 3
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    ],
> +# CHECK-NEXT:    "uri": "file:///foo.c"
> +# CHECK-NEXT:  }
>  Content-Length: 44
> 
>  {"jsonrpc":"2.0","id":5,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":5,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/fixits.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/fixits.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/fixits.test (original)
> +++ clang-tools-extra/trunk/test/clangd/fixits.test Mon Nov  6 07:40:30 2017
> @@ -1,4 +1,4 @@
> -# RUN: clangd -run-synchronously < %s | FileCheck %s
> +# RUN: clangd -pretty -run-synchronously < %s | FileCheck -strict-whitespace
> %s
>  # It is absolutely vital that this file has CRLF line endings.
>  #
>  Content-Length: 125
> @@ -8,30 +8,242 @@ Content-Length: 125
>  Content-Length: 180
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"ur
> i":"file:///foo.c","languageId":"c","version":1,"text":"int main(int i, char
> **a) { if (i = 2) {}}"}}}
> -#
> -# CHECK:
> {"jsonrpc":"2.0","method":"textDocument/publishDiagnostics","params":{"uri":"f
> ile:///foo.c","diagnostics":[{"range":{"start": {"line": 0, "character": 35},
> "end": {"line": 0, "character": 35}},"severity":2,"message":"using the result
> of an assignment as a condition without parentheses"},{"range":{"start":
> {"line": 0, "character": 35}, "end": {"line": 0, "character":
> 35}},"severity":3,"message":"place parentheses around the assignment to
> silence this warning"},{"range":{"start": {"line": 0, "character": 35}, "end":
> {"line": 0, "character": 35}},"severity":3,"message":"use '==' to turn this
> assignment into an equality comparison"}]}}
> -#
> +#      CHECK:    "method": "textDocument/publishDiagnostics",
> +# CHECK-NEXT:  "params": {
> +# CHECK-NEXT:    "diagnostics": [
> +# CHECK-NEXT:      {
> +# CHECK-NEXT:        "message": "using the result of an assignment as a
> condition without parentheses",
> +# CHECK-NEXT:        "range": {
> +# CHECK-NEXT:          "end": {
> +# CHECK-NEXT:            "character": 35,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          "start": {
> +# CHECK-NEXT:            "character": 35,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "severity": 2
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      {
> +# CHECK-NEXT:        "message": "place parentheses around the assignment to
> silence this warning",
> +# CHECK-NEXT:        "range": {
> +# CHECK-NEXT:          "end": {
> +# CHECK-NEXT:            "character": 35,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          "start": {
> +# CHECK-NEXT:            "character": 35,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "severity": 3
> +# CHECK-NEXT:      },
> +# CHECK-NEXT:      {
> +# CHECK-NEXT:        "message": "use '==' to turn this assignment into an
> equality comparison",
> +# CHECK-NEXT:        "range": {
> +# CHECK-NEXT:          "end": {
> +# CHECK-NEXT:            "character": 35,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          "start": {
> +# CHECK-NEXT:            "character": 35,
> +# CHECK-NEXT:            "line": 0
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "severity": 3
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    ],
> +# CHECK-NEXT:    "uri": "file:///foo.c"
> +# CHECK-NEXT:  }
>  Content-Length: 746
> 
> 
> {"jsonrpc":"2.0","id":2,"method":"textDocument/codeAction","params":{"textDocu
> ment":{"uri":"file:///foo.c"},"range":{"start":{"line":104,"character":13},"en
> d":{"line":0,"character":35}},"context":{"diagnostics":[{"range":{"start":
> {"line": 0, "character": 35}, "end": {"line": 0, "character":
> 35}},"severity":2,"message":"using the result of an assignment as a condition
> without parentheses"},{"range":{"start": {"line": 0, "character": 35}, "end":
> {"line": 0, "character": 35}},"severity":3,"message":"place parentheses around
> the assignment to silence this warning"},{"range":{"start": {"line": 0,
> "character": 35}, "end": {"line": 0, "character":
> 35}},"severity":3,"message":"use '==' to turn this assignment into an equality
> comparison"}]}}}
> -#
> -# CHECK: {"jsonrpc":"2.0","id":2,"result":[{"title":"Apply FixIt 'place
> parentheses around the assignment to silence this warning'", "command":
> "clangd.applyFix", "arguments": [{"changes": {"file:///foo.c": [{"range":
> {"start": {"line": 0, "character": 32}, "end": {"line": 0, "character": 32}},
> "newText": "("},{"range": {"start": {"line": 0, "character": 37}, "end":
> {"line": 0, "character": 37}}, "newText": ")"}]}}]},{"title":"Apply FixIt 'use
> '==' to turn this assignment into an equality comparison'", "command":
> "clangd.applyFix", "arguments": [{"changes": {"file:///foo.c": [{"range":
> {"start": {"line": 0, "character": 34}, "end": {"line": 0, "character": 35}},
> "newText": "=="}]}}]}]}
> -#
> +#      CHECK:  "id": 2,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "arguments": [
> +# CHECK-NEXT:        {
> +# CHECK-NEXT:          "changes": {
> +# CHECK-NEXT:            "file:///foo.c": [
> +# CHECK-NEXT:              {
> +# CHECK-NEXT:                "newText": "(",
> +# CHECK-NEXT:                "range": {
> +# CHECK-NEXT:                  "end": {
> +# CHECK-NEXT:                    "character": 32,
> +# CHECK-NEXT:                    "line": 0
> +# CHECK-NEXT:                  },
> +# CHECK-NEXT:                  "start": {
> +# CHECK-NEXT:                    "character": 32,
> +# CHECK-NEXT:                    "line": 0
> +# CHECK-NEXT:                  }
> +# CHECK-NEXT:                }
> +# CHECK-NEXT:              },
> +# CHECK-NEXT:              {
> +# CHECK-NEXT:                "newText": ")",
> +# CHECK-NEXT:                "range": {
> +# CHECK-NEXT:                  "end": {
> +# CHECK-NEXT:                    "character": 37,
> +# CHECK-NEXT:                    "line": 0
> +# CHECK-NEXT:                  },
> +# CHECK-NEXT:                  "start": {
> +# CHECK-NEXT:                    "character": 37,
> +# CHECK-NEXT:                    "line": 0
> +# CHECK-NEXT:                  }
> +# CHECK-NEXT:                }
> +# CHECK-NEXT:              }
> +# CHECK-NEXT:            ]
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      ],
> +# CHECK-NEXT:      "command": "clangd.applyFix",
> +# CHECK-NEXT:      "title": "Apply FixIt place parentheses around the
> assignment to silence this warning"
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "arguments": [
> +# CHECK-NEXT:        {
> +# CHECK-NEXT:          "changes": {
> +# CHECK-NEXT:            "file:///foo.c": [
> +# CHECK-NEXT:              {
> +# CHECK-NEXT:                "newText": "==",
> +# CHECK-NEXT:                "range": {
> +# CHECK-NEXT:                  "end": {
> +# CHECK-NEXT:                    "character": 35,
> +# CHECK-NEXT:                    "line": 0
> +# CHECK-NEXT:                  },
> +# CHECK-NEXT:                  "start": {
> +# CHECK-NEXT:                    "character": 34,
> +# CHECK-NEXT:                    "line": 0
> +# CHECK-NEXT:                  }
> +# CHECK-NEXT:                }
> +# CHECK-NEXT:              }
> +# CHECK-NEXT:            ]
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      ],
> +# CHECK-NEXT:      "command": "clangd.applyFix",
> +# CHECK-NEXT:      "title": "Apply FixIt use '==' to turn this assignment
> into an equality comparison"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 771
> 
> -
> {"jsonrpc":"2.0","id":2,"method":"textDocument/codeAction","params":{"textDocu
> ment":{"uri":"file:///foo.c"},"range":{"start":{"line":104,"character":13},"en
> d":{"line":0,"character":35}},"context":{"diagnostics":[{"range":{"start":
> {"line": 0, "character": 35}, "end": {"line": 0, "character":
> 35}},"severity":2,"code":"1","source":"foo","message":"using the result of an
> assignment as a condition without parentheses"},{"range":{"start": {"line": 0,
> "character": 35}, "end": {"line": 0, "character":
> 35}},"severity":3,"message":"place parentheses around the assignment to
> silence this warning"},{"range":{"start": {"line": 0, "character": 35}, "end":
> {"line": 0, "character": 35}},"severity":3,"message":"use '==' to turn this
> assignment into an equality comparison"}]}}}
> +{"jsonrpc":"2.0","id":3,"method":"textDocument/codeAction","params":{"textDoc
> ument":{"uri":"file:///foo.c"},"range":{"start":{"line":104,"character":13},"e
> nd":{"line":0,"character":35}},"context":{"diagnostics":[{"range":{"start":
> {"line": 0, "character": 35}, "end": {"line": 0, "character":
> 35}},"severity":2,"code":"1","source":"foo","message":"using the result of an
> assignment as a condition without parentheses"},{"range":{"start": {"line": 0,
> "character": 35}, "end": {"line": 0, "character":
> 35}},"severity":3,"message":"place parentheses around the assignment to
> silence this warning"},{"range":{"start": {"line": 0, "character": 35}, "end":
> {"line": 0, "character": 35}},"severity":3,"message":"use '==' to turn this
> assignment into an equality comparison"}]}}}
>  # Make sure unused "code" and "source" fields ignored gracefully
> -# CHECK: {"jsonrpc":"2.0","id":2,"result":[{"title":"Apply FixIt 'place
> parentheses around the assignment to silence this warning'", "command":
> "clangd.applyFix", "arguments": [{"changes": {"file:///foo.c": [{"range":
> {"start": {"line": 0, "character": 32}, "end": {"line": 0, "character": 32}},
> "newText": "("},{"range": {"start": {"line": 0, "character": 37}, "end":
> {"line": 0, "character": 37}}, "newText": ")"}]}}]},{"title":"Apply FixIt 'use
> '==' to turn this assignment into an equality comparison'", "command":
> "clangd.applyFix", "arguments": [{"changes": {"file:///foo.c": [{"range":
> {"start": {"line": 0, "character": 34}, "end": {"line": 0, "character": 35}},
> "newText": "=="}]}}]}]}
> -#
> +#      CHECK:  "id": 3,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "arguments": [
> +# CHECK-NEXT:        {
> +# CHECK-NEXT:          "changes": {
> +# CHECK-NEXT:            "file:///foo.c": [
> +# CHECK-NEXT:              {
> +# CHECK-NEXT:                "newText": "(",
> +# CHECK-NEXT:                "range": {
> +# CHECK-NEXT:                  "end": {
> +# CHECK-NEXT:                    "character": 32,
> +# CHECK-NEXT:                    "line": 0
> +# CHECK-NEXT:                  },
> +# CHECK-NEXT:                  "start": {
> +# CHECK-NEXT:                    "character": 32,
> +# CHECK-NEXT:                    "line": 0
> +# CHECK-NEXT:                  }
> +# CHECK-NEXT:                }
> +# CHECK-NEXT:              },
> +# CHECK-NEXT:              {
> +# CHECK-NEXT:                "newText": ")",
> +# CHECK-NEXT:                "range": {
> +# CHECK-NEXT:                  "end": {
> +# CHECK-NEXT:                    "character": 37,
> +# CHECK-NEXT:                    "line": 0
> +# CHECK-NEXT:                  },
> +# CHECK-NEXT:                  "start": {
> +# CHECK-NEXT:                    "character": 37,
> +# CHECK-NEXT:                    "line": 0
> +# CHECK-NEXT:                  }
> +# CHECK-NEXT:                }
> +# CHECK-NEXT:              }
> +# CHECK-NEXT:            ]
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      ],
> +# CHECK-NEXT:      "command": "clangd.applyFix",
> +# CHECK-NEXT:      "title": "Apply FixIt place parentheses around the
> assignment to silence this warning"
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "arguments": [
> +# CHECK-NEXT:        {
> +# CHECK-NEXT:          "changes": {
> +# CHECK-NEXT:            "file:///foo.c": [
> +# CHECK-NEXT:              {
> +# CHECK-NEXT:                "newText": "==",
> +# CHECK-NEXT:                "range": {
> +# CHECK-NEXT:                  "end": {
> +# CHECK-NEXT:                    "character": 35,
> +# CHECK-NEXT:                    "line": 0
> +# CHECK-NEXT:                  },
> +# CHECK-NEXT:                  "start": {
> +# CHECK-NEXT:                    "character": 34,
> +# CHECK-NEXT:                    "line": 0
> +# CHECK-NEXT:                  }
> +# CHECK-NEXT:                }
> +# CHECK-NEXT:              }
> +# CHECK-NEXT:            ]
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      ],
> +# CHECK-NEXT:      "command": "clangd.applyFix",
> +# CHECK-NEXT:      "title": "Apply FixIt use '==' to turn this assignment
> into an equality comparison"
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 329
> 
> -
> {"jsonrpc":"2.0","id":3,"method":"workspace/executeCommand","params":{"command
> ":"clangd.applyFix","arguments":[{"changes":{"file:///foo.c":[{"range":{"start
> ":{"line":0,"character":32},"end":{"line":0,"character":32}},"newText":"("},{"
> range":{"start":{"line":0,"character":37},"end":{"line":0,"character":37}},"ne
> wText":")"}]}}]}}
> -# CHECK: {"jsonrpc":"2.0","id":3,"result":"Fix applied."}
> -# CHECK:
> {"jsonrpc":"2.0","id":1,"method":"workspace/applyEdit","params":{"edit":
> {"changes": {"file:///foo.c": [{"range": {"start": {"line": 0, "character":
> 32}, "end": {"line": 0, "character": 32}}, "newText": "("},{"range": {"start":
> {"line": 0, "character": 37}, "end": {"line": 0, "character": 37}}, "newText":
> ")"}]}}}}
> +{"jsonrpc":"2.0","id":4,"method":"workspace/executeCommand","params":{"comman
> d":"clangd.applyFix","arguments":[{"changes":{"file:///foo.c":[{"range":{"star
> t":{"line":0,"character":32},"end":{"line":0,"character":32}},"newText":"("},{
> "range":{"start":{"line":0,"character":37},"end":{"line":0,"character":37}},"n
> ewText":")"}]}}]}}
> +#      CHECK:  "id": 4,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": "Fix applied."
> +#
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "method": "workspace/applyEdit",
> +# CHECK-NEXT:  "params": {
> +# CHECK-NEXT:    "edit": {
> +# CHECK-NEXT:      "changes": {
> +# CHECK-NEXT:        "file:///foo.c": [
> +# CHECK-NEXT:          {
> +# CHECK-NEXT:            "newText": "(",
> +# CHECK-NEXT:            "range": {
> +# CHECK-NEXT:              "end": {
> +# CHECK-NEXT:                "character": 32,
> +# CHECK-NEXT:                "line": 0
> +# CHECK-NEXT:              },
> +# CHECK-NEXT:              "start": {
> +# CHECK-NEXT:                "character": 32,
> +# CHECK-NEXT:                "line": 0
> +# CHECK-NEXT:              }
> +# CHECK-NEXT:            }
> +# CHECK-NEXT:          },
> +# CHECK-NEXT:          {
> +# CHECK-NEXT:            "newText": ")",
> +# CHECK-NEXT:            "range": {
> +# CHECK-NEXT:              "end": {
> +# CHECK-NEXT:                "character": 37,
> +# CHECK-NEXT:                "line": 0
> +# CHECK-NEXT:              },
> +# CHECK-NEXT:              "start": {
> +# CHECK-NEXT:                "character": 37,
> +# CHECK-NEXT:                "line": 0
> +# CHECK-NEXT:              }
> +# CHECK-NEXT:            }
> +# CHECK-NEXT:          }
> +# CHECK-NEXT:        ]
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  }
>  Content-Length: 44
> 
> -{"jsonrpc":"2.0","id":3,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":3,"result":null}
> +{"jsonrpc":"2.0","id":4,"method":"shutdown"}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/formatting.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/formatting.test?rev=317486&r1=317485&r2=317486&view=di
> ff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/formatting.test (original)
> +++ clang-tools-extra/trunk/test/clangd/formatting.test Mon Nov  6 07:40:30
> 2017
> @@ -1,30 +1,71 @@
> -# RUN: clangd < %s | FileCheck %s
> +# RUN: clangd -pretty -run-synchronously < %s | FileCheck -strict-whitespace
> %s
>  # It is absolutely vital that this file has CRLF line endings.
>  #
>  Content-Length: 125
> 
> 
> {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"processId":123,"rootP
> ath":"clangd","capabilities":{},"trace":"off"}}
> -# CHECK: {"jsonrpc":"2.0","id":0,"result":{"capabilities":{
> -# CHECK:   "textDocumentSync": 1,
> -# CHECK:   "documentFormattingProvider": true,
> -# CHECK:   "documentRangeFormattingProvider": true,
> -# CHECK:   "documentOnTypeFormattingProvider":
> {"firstTriggerCharacter":"}","moreTriggerCharacter":[]},
> -# CHECK:   "codeActionProvider": true,
> -# CHECK:   "completionProvider": {"resolveProvider": false,
> "triggerCharacters": [".",">",":"]},
> -# CHECK:   "definitionProvider": true
> -# CHECK: }}}
> -#
>  Content-Length: 193
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"ur
> i":"file:///foo.c","languageId":"c","version":1,"text":"int foo ( int x ) {\n
> x = x+1;\n    return x;\n    }"}}}
> -#
> -#
>  Content-Length: 233
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/rangeFormatting","params":{"tex
> tDocument":{"uri":"file:///foo.c"},"range":{"start":{"line":1,"character":4},"
> end":{"line":1,"character":12}},"options":{"tabSize":4,"insertSpaces":true}}}
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[{"range": {"start": {"line": 0,
> "character": 19}, "end": {"line": 1, "character": 4}}, "newText": "\n
> "},{"range": {"start": {"line": 1, "character": 9}, "end": {"line": 1,
> "character": 9}}, "newText": " "},{"range": {"start": {"line": 1, "character":
> 10}, "end": {"line": 1, "character": 10}}, "newText": " "},{"range": {"start":
> {"line": 1, "character": 12}, "end": {"line": 2, "character": 4}}, "newText":
> "\n  "}]}
> -#
> -#
> +#      CHECK:   "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "newText": "\n  ",
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 4,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 19,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "newText": " ",
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 9,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 9,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "newText": " ",
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 10,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 10,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "newText": "\n  ",
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 4,
> +# CHECK-NEXT:          "line": 2
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 12,
> +# CHECK-NEXT:          "line": 1
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 197
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///foo.c","version":5},"contentChanges":[{"text":"int foo ( int x )
> {\n  x = x + 1;\n  return x;\n    }"}]}}
> @@ -33,14 +74,68 @@ Content-Length: 197
>  Content-Length: 233
> 
> 
> {"jsonrpc":"2.0","id":2,"method":"textDocument/rangeFormatting","params":{"tex
> tDocument":{"uri":"file:///foo.c"},"range":{"start":{"line":1,"character":2},"
> end":{"line":1,"character":12}},"options":{"tabSize":4,"insertSpaces":true}}}
> -# CHECK: {"jsonrpc":"2.0","id":2,"result":[]}
> -#
> +#      CHECK:  "id": 2,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": []
>  Content-Length: 153
> 
> 
> {"jsonrpc":"2.0","id":3,"method":"textDocument/formatting","params":{"textDocu
> ment":{"uri":"file:///foo.c"},"options":{"tabSize":4,"insertSpaces":true}}}
> -# CHECK: {"jsonrpc":"2.0","id":3,"result":[{"range": {"start": {"line": 0,
> "character": 7}, "end": {"line": 0, "character": 8}}, "newText": ""},{"range":
> {"start": {"line": 0, "character": 9}, "end": {"line": 0, "character": 10}},
> "newText": ""},{"range": {"start": {"line": 0, "character": 15}, "end":
> {"line": 0, "character": 16}}, "newText": ""},{"range": {"start": {"line": 2,
> "character": 11}, "end": {"line": 3, "character": 4}}, "newText": "\n"}]}
> -#
> -#
> +#      CHECK:  "id": 3,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "newText": "",
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 8,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 7,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "newText": "",
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 10,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 9,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "newText": "",
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 16,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 15,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "newText": "\n",
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 4,
> +# CHECK-NEXT:          "line": 3
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 11,
> +# CHECK-NEXT:          "line": 2
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
>  Content-Length: 190
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///foo.c","version":9},"contentChanges":[{"text":"int foo(int x)
> {\n  x = x + 1;\n  return x;\n}"}]}}
> @@ -49,8 +144,9 @@ Content-Length: 190
>  Content-Length: 153
> 
> 
> {"jsonrpc":"2.0","id":4,"method":"textDocument/formatting","params":{"textDocu
> ment":{"uri":"file:///foo.c"},"options":{"tabSize":4,"insertSpaces":true}}}
> -# CHECK: {"jsonrpc":"2.0","id":4,"result":[]}
> -#
> +#      CHECK:  "id": 4,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": []
>  Content-Length: 193
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"
> uri":"file:///foo.c","version":5},"contentChanges":[{"text":"int foo ( int x )
> {\n  x = x + 1;\n  return x;\n}"}]}}
> @@ -59,13 +155,53 @@ Content-Length: 193
>  Content-Length: 204
> 
> 
> {"jsonrpc":"2.0","id":5,"method":"textDocument/onTypeFormatting","params":{"te
> xtDocument":{"uri":"file:///foo.c"},"position":{"line":3,"character":1},"ch":"
> }","options":{"tabSize":4,"insertSpaces":true}}}
> -# CHECK: {"jsonrpc":"2.0","id":5,"result":[{"range": {"start": {"line": 0,
> "character": 7}, "end": {"line": 0, "character": 8}}, "newText": ""},{"range":
> {"start": {"line": 0, "character": 9}, "end": {"line": 0, "character": 10}},
> "newText": ""},{"range": {"start": {"line": 0, "character": 15}, "end":
> {"line": 0, "character": 16}}, "newText": ""}]}
> -#
> +#      CHECK:  "id": 5,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "newText": "",
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 8,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 7,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "newText": "",
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 10,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 9,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    {
> +# CHECK-NEXT:      "newText": "",
> +# CHECK-NEXT:      "range": {
> +# CHECK-NEXT:        "end": {
> +# CHECK-NEXT:          "character": 16,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        },
> +# CHECK-NEXT:        "start": {
> +# CHECK-NEXT:          "character": 15,
> +# CHECK-NEXT:          "line": 0
> +# CHECK-NEXT:        }
> +# CHECK-NEXT:      }
> +# CHECK-NEXT:    }
> +# CHECK-NEXT:  ]
> 
>  Content-Length: 44
> 
>  {"jsonrpc":"2.0","id":6,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":6,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/initialize-params-invalid.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/initialize-params-
> invalid.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/initialize-params-invalid.test
> (original)
> +++ clang-tools-extra/trunk/test/clangd/initialize-params-invalid.test Mon Nov
> 6 07:40:30 2017
> @@ -1,27 +1,45 @@
> -# RUN: clangd -run-synchronously < %s | FileCheck %s
> +# RUN: clangd -pretty -run-synchronously < %s | FileCheck -strict-whitespace
> %s
>  # It is absolutely vital that this file has CRLF line endings.
>  #
>  # Test with invalid initialize request parameters
>  Content-Length: 142
> 
> 
> {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"processId":"","rootUr
> i":"file:///path/to/workspace","capabilities":{},"trace":"off"}}
> -# CHECK: Content-Length: 606
> -# CHECK: {"jsonrpc":"2.0","id":0,"result":{"capabilities":{
> -# CHECK:   "textDocumentSync": 1,
> -# CHECK:   "documentFormattingProvider": true,
> -# CHECK:   "documentRangeFormattingProvider": true,
> -# CHECK:   "documentOnTypeFormattingProvider":
> {"firstTriggerCharacter":"}","moreTriggerCharacter":[]},
> -# CHECK:   "codeActionProvider": true,
> -# CHECK:   "completionProvider": {"resolveProvider": false,
> "triggerCharacters": [".",">",":"]},
> -# CHECK:   "signatureHelpProvider": {"triggerCharacters": ["(",","]},
> -# CHECK:   "definitionProvider": true,
> -# CHECK:   "executeCommandProvider": {"commands": ["clangd.applyFix"]}
> -# CHECK: }}}
> -#
> +#      CHECK:  "id": 0,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": {
> +# CHECK-NEXT:    "codeActionProvider": true,
> +# CHECK-NEXT:    "completionProvider": {
> +# CHECK-NEXT:      "resolveProvider": false,
> +# CHECK-NEXT:      "triggerCharacters": [
> +# CHECK-NEXT:        ".",
> +# CHECK-NEXT:        ">",
> +# CHECK-NEXT:        ":"
> +# CHECK-NEXT:      ]
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    "definitionProvider": true,
> +# CHECK-NEXT:    "documentFormattingProvider": true,
> +# CHECK-NEXT:    "documentOnTypeFormattingProvider": {
> +# CHECK-NEXT:      "firstTriggerCharacter": "}",
> +# CHECK-NEXT:      "moreTriggerCharacter": []
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    "documentRangeFormattingProvider": true,
> +# CHECK-NEXT:    "executeCommandProvider": {
> +# CHECK-NEXT:      "commands": [
> +# CHECK-NEXT:        "clangd.applyFix"
> +# CHECK-NEXT:      ]
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    "signatureHelpProvider": {
> +# CHECK-NEXT:      "triggerCharacters": [
> +# CHECK-NEXT:        "(",
> +# CHECK-NEXT:        ","
> +# CHECK-NEXT:      ]
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    "textDocumentSync": 1
> +# CHECK-NEXT:  }
>  Content-Length: 44
> 
>  {"jsonrpc":"2.0","id":3,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":3,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/initialize-params.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/initialize-
> params.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/initialize-params.test (original)
> +++ clang-tools-extra/trunk/test/clangd/initialize-params.test Mon Nov  6
> 07:40:30 2017
> @@ -1,27 +1,48 @@
> -# RUN: clangd -run-synchronously < %s | FileCheck %s
> +# RUN: clangd -pretty -run-synchronously < %s | FileCheck -strict-whitespace
> %s
>  # It is absolutely vital that this file has CRLF line endings.
>  #
>  # Test initialize request parameters with rootUri
>  Content-Length: 143
> 
> 
> {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"processId":123,"rootU
> ri":"file:///path/to/workspace","capabilities":{},"trace":"off"}}
> -# CHECK: Content-Length: 606
> -# CHECK: {"jsonrpc":"2.0","id":0,"result":{"capabilities":{
> -# CHECK:   "textDocumentSync": 1,
> -# CHECK:   "documentFormattingProvider": true,
> -# CHECK:   "documentRangeFormattingProvider": true,
> -# CHECK:   "documentOnTypeFormattingProvider":
> {"firstTriggerCharacter":"}","moreTriggerCharacter":[]},
> -# CHECK:   "codeActionProvider": true,
> -# CHECK:   "completionProvider": {"resolveProvider": false,
> "triggerCharacters": [".",">",":"]},
> -# CHECK:   "signatureHelpProvider": {"triggerCharacters": ["(",","]},
> -# CHECK:   "definitionProvider": true,
> -# CHECK:   "executeCommandProvider": {"commands": ["clangd.applyFix"]}
> -# CHECK: }}}
> -#
> +#      CHECK:  "id": 0,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": {
> +# CHECK-NEXT:    "codeActionProvider": true,
> +# CHECK-NEXT:    "completionProvider": {
> +# CHECK-NEXT:      "resolveProvider": false,
> +# CHECK-NEXT:      "triggerCharacters": [
> +# CHECK-NEXT:        ".",
> +# CHECK-NEXT:        ">",
> +# CHECK-NEXT:        ":"
> +# CHECK-NEXT:      ]
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    "definitionProvider": true,
> +# CHECK-NEXT:    "documentFormattingProvider": true,
> +# CHECK-NEXT:    "documentOnTypeFormattingProvider": {
> +# CHECK-NEXT:      "firstTriggerCharacter": "}",
> +# CHECK-NEXT:      "moreTriggerCharacter": []
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    "documentRangeFormattingProvider": true,
> +# CHECK-NEXT:    "executeCommandProvider": {
> +# CHECK-NEXT:      "commands": [
> +# CHECK-NEXT:        "clangd.applyFix"
> +# CHECK-NEXT:      ]
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    "signatureHelpProvider": {
> +# CHECK-NEXT:      "triggerCharacters": [
> +# CHECK-NEXT:        "(",
> +# CHECK-NEXT:        ","
> +# CHECK-NEXT:      ]
> +# CHECK-NEXT:    },
> +# CHECK-NEXT:    "textDocumentSync": 1
> +# CHECK-NEXT:  }
>  Content-Length: 44
> 
>  {"jsonrpc":"2.0","id":3,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":3,"result":null}
> +#      CHECK:  "id": 3,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": null
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/input-mirror.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/input-
> mirror.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/input-mirror.test (original)
> +++ clang-tools-extra/trunk/test/clangd/input-mirror.test Mon Nov  6 07:40:30
> 2017
> @@ -1,4 +1,4 @@
> -# RUN: clangd -run-synchronously -input-mirror-file %t < %s
> +# RUN: clangd -pretty -run-synchronously -input-mirror-file %t < %s
>  # Note that we have to use '-b' as -input-mirror-file does not have a newline
> at the end of file.
>  # RUN: diff -b %t %s
>  # It is absolutely vital that this file has CRLF line endings.
> @@ -152,7 +152,6 @@ Content-Length: 148
>  Content-Length: 44
> 
>  {"jsonrpc":"2.0","id":3,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":3,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/protocol.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/protocol.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/protocol.test (original)
> +++ clang-tools-extra/trunk/test/clangd/protocol.test Mon Nov  6 07:40:30 2017
> @@ -1,5 +1,5 @@
> -# RUN: not clangd -run-synchronously < %s | FileCheck %s
> -# RUN: not clangd -run-synchronously < %s 2>&1 | FileCheck -check-
> prefix=STDERR %s
> +# RUN: not clangd -pretty -run-synchronously < %s | FileCheck -strict-
> whitespace %s
> +# RUN: not clangd -pretty -run-synchronously < %s 2>&1 | FileCheck -check-
> prefix=STDERR %s
>  # vim: fileformat=dos
>  # It is absolutely vital that this file has CRLF line endings.
>  #
> @@ -12,16 +12,9 @@ Content-Type: application/vscode-jsonrpc
> 
> {"jsonrpc":"2.0","id":0,"method":"initialize","params":{"processId":123,"rootP
> ath":"clangd","capabilities":{},"trace":"off"}}
>  # Test message with Content-Type after Content-Length
>  #
> -# CHECK: "jsonrpc":"2.0","id":0,"result":{"capabilities":{
> -# CHECK-DAG: "textDocumentSync": 1,
> -# CHECK-DAG: "documentFormattingProvider": true,
> -# CHECK-DAG: "documentRangeFormattingProvider": true,
> -# CHECK-DAG: "documentOnTypeFormattingProvider":
> {"firstTriggerCharacter":"}","moreTriggerCharacter":[]},
> -# CHECK-DAG: "codeActionProvider": true,
> -# CHECK-DAG: "completionProvider": {"resolveProvider": false,
> "triggerCharacters": [".",">",":"]},
> -# CHECK-DAG: "definitionProvider": true
> -# CHECK: }}
> -
> +#      CHECK:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": {
> +#      CHECK:  }
>  Content-Length: 246
> 
> 
> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"ur
> i":"file:///main.cpp","languageId":"cpp","version":1,"text":"struct fake { int
> a, bb, ccc; int f(int i, const float f) const; };\nint main() {\n  fake f;\n
> f.\n}\n"}}}
> @@ -36,9 +29,16 @@ Content-Length: 146
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:/main.cpp"},"position":{"line":3,"character":5}}}
>  # Test message with Content-Type before Content-Length
>  #
> -# CHECK: {"jsonrpc":"2.0","id":1,"result":[
> -# CHECK-DAG:
> {"label":"a","kind":5,"detail":"int","sortText":"000035a","filterText":"a","in
> sertText":"a","insertTextFormat":1}
> -# CHECK: ]}
> +#      CHECK:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +#      CHECK:      "filterText": "fake",
> +# CHECK-NEXT:      "insertText": "fake",
> +# CHECK-NEXT:      "insertTextFormat": 1,
> +# CHECK-NEXT:      "kind": 7,
> +# CHECK-NEXT:      "label": "fake::",
> +# CHECK-NEXT:      "sortText": "000075fake"
> +#      CHECK:  ]
> 
>  X-Test: Testing
>  Content-Type: application/vscode-jsonrpc; charset-utf-8
> @@ -55,9 +55,16 @@ Content-Length: 146
> 
> {"jsonrpc":"2.0","id":3,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:/main.cpp"},"position":{"line":3,"character":5}}}
>  # Test message with duplicate Content-Length headers
>  #
> -# CHECK: {"jsonrpc":"2.0","id":3,"result":[
> -# CHECK-DAG:
> {"label":"a","kind":5,"detail":"int","sortText":"000035a","filterText":"a","in
> sertText":"a","insertTextFormat":1}
> -# CHECK: ]}
> +#      CHECK:  "id": 3,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +#      CHECK:      "filterText": "fake",
> +# CHECK-NEXT:      "insertText": "fake",
> +# CHECK-NEXT:      "insertTextFormat": 1,
> +# CHECK-NEXT:      "kind": 7,
> +# CHECK-NEXT:      "label": "fake::",
> +# CHECK-NEXT:      "sortText": "000075fake"
> +#      CHECK:  ]
>  # STDERR: Warning: Duplicate Content-Length header received. The previous
> value for this message (10) was ignored.
> 
>  Content-Type: application/vscode-jsonrpc; charset-utf-8
> @@ -74,10 +81,16 @@ Content-Length: 146
> 
> {"jsonrpc":"2.0","id":5,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:/main.cpp"},"position":{"line":3,"character":5}}}
>  # Test message with Content-Type before Content-Length
>  #
> -# CHECK: {"jsonrpc":"2.0","id":5,"result":[
> -# CHECK-DAG:
> {"label":"a","kind":5,"detail":"int","sortText":"000035a","filterText":"a","in
> sertText":"a","insertTextFormat":1}
> -# CHECK: ]}
> -
> +#      CHECK:  "id": 5,
> +# CHECK-NEXT:  "jsonrpc": "2.0",
> +# CHECK-NEXT:  "result": [
> +#      CHECK:      "filterText": "fake",
> +# CHECK-NEXT:      "insertText": "fake",
> +# CHECK-NEXT:      "insertTextFormat": 1,
> +# CHECK-NEXT:      "kind": 7,
> +# CHECK-NEXT:      "label": "fake::",
> +# CHECK-NEXT:      "sortText": "000075fake"
> +#      CHECK:  ]
>  Content-Length: 1024
> 
> 
> {"jsonrpc":"2.0","id":5,"method":"textDocument/completion","params":{"textDocu
> ment":{"uri":"file:/main.cpp"},"position":{"line":3,"character":5}}}
> 
> Modified: clang-tools-extra/trunk/test/clangd/signature-help.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/signature-
> help.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/signature-help.test (original)
> +++ clang-tools-extra/trunk/test/clangd/signature-help.test Mon Nov  6
> 07:40:30 2017
> @@ -15,12 +15,12 @@ Content-Length: 333
>  Content-Length: 151
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/signatureHelp","params":{"textD
> ocument":{"uri":"file:///main.cpp"},"position":{"line":8,"character":9}}}
> -# CHECK:
> {"jsonrpc":"2.0","id":1,"result":{"activeSignature":0,"activeParameter":0,"sig
> natures":[
> +# CHECK:
> {"id":1,"jsonrpc":"2.0","result":{"activeParameter":0,"activeSignature":0,"sig
> natures":[
>  # CHECK-DAG: {"label":"foo(float x, float y) ->
> void","parameters":[{"label":"float x"},{"label":"float y"}]}
>  # CHECK-DAG: {"label":"foo(float x, int y) ->
> void","parameters":[{"label":"float x"},{"label":"int y"}]}
>  # CHECK-DAG: {"label":"foo(int x, float y) ->
> void","parameters":[{"label":"int x"},{"label":"float y"}]}
>  # CHECK-DAG: {"label":"foo(int x, int y) -> void","parameters":[{"label":"int
> x"},{"label":"int y"}]}
> -# CHECK: ]}
> +# CHECK-SAME: ]}
> 
>  # Modify the document
>  Content-Length: 333
> @@ -31,21 +31,20 @@ Content-Length: 333
>  Content-Length: 151
> 
> 
> {"jsonrpc":"2.0","id":2,"method":"textDocument/signatureHelp","params":{"textD
> ocument":{"uri":"file:///main.cpp"},"position":{"line":8,"character":9}}}
> -# CHECK:
> {"jsonrpc":"2.0","id":2,"result":{"activeSignature":0,"activeParameter":0,"sig
> natures":[
> +# CHECK:
> {"id":2,"jsonrpc":"2.0","result":{"activeParameter":0,"activeSignature":0,"sig
> natures":[
>  # CHECK-DAG: {"label":"bar(int x, int y = 0) ->
> void","parameters":[{"label":"int x"},{"label":"int y = 0"}]}
>  # CHECK-DAG: {"label":"bar(float x = 0, int y = 42) ->
> void","parameters":[{"label":"float x = 0"},{"label":"int y = 42"}]}
> -# CHECK: ]}
> +# CHECK-SAME: ]}
> 
>  Content-Length: 159
> 
> 
> {"jsonrpc":"2.0","id":3,"method":"textDocument/signatureHelp","params":{"textD
> ocument":{"uri":"file:///doesnotexist.cpp"},"position":{"line":8,"character":9
> }}}
> -# CHECK: {"jsonrpc":"2.0","id":3,"error":{"code":-
> 32602,"message":"signatureHelp is called for non-added document"}}
> +# CHECK: {"error":{"code":-32602,"message":"signatureHelp is called for non-
> added document"},"id":3,"jsonrpc":"2.0"}
> 
>  # Shutdown.
>  Content-Length: 49
> 
>  {"jsonrpc":"2.0","id":100000,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":100000,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/test/clangd/unsupported-method.test
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/test/clangd/unsupported-
> method.test?rev=317486&r1=317485&r2=317486&view=diff
> ==============================================================================
> --- clang-tools-extra/trunk/test/clangd/unsupported-method.test (original)
> +++ clang-tools-extra/trunk/test/clangd/unsupported-method.test Mon Nov  6
> 07:40:30 2017
> @@ -1,4 +1,4 @@
> -# RUN: clangd -run-synchronously < %s | FileCheck %s
> +# RUN: clangd -pretty -run-synchronously < %s | FileCheck -strict-whitespace
> %s
>  # It is absolutely vital that this file has CRLF line endings.
>  #
>  Content-Length: 125
> @@ -12,12 +12,16 @@ Content-Length: 143
>  Content-Length: 92
> 
> 
> {"jsonrpc":"2.0","id":1,"method":"textDocument/jumpInTheAirLikeYouJustDontCare
> ","params":{}}
> -# CHECK: {"jsonrpc":"2.0","id":1,"error":{"code":-32601,"message":"method not
> found"}}
> +#      CHECK:  "error": {
> +# CHECK-NEXT:    "code": -32601,
> +# CHECK-NEXT:    "message": "method not found"
> +# CHECK-NEXT:  },
> +# CHECK-NEXT:  "id": 1,
> +# CHECK-NEXT:  "jsonrpc": "2.0"
> 
>  Content-Length: 44
> 
>  {"jsonrpc":"2.0","id":2,"method":"shutdown"}
> -# CHECK: {"jsonrpc":"2.0","id":2,"result":null}
>  Content-Length: 33
> 
>  {"jsonrpc":"2.0":"method":"exit"}
> 
> Modified: clang-tools-extra/trunk/unittests/clangd/CMakeLists.txt
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/unittests/clangd/CMakeLists.txt?rev=317486&r1=317485&r2=317486&vie
> w=diff
> ==============================================================================
> --- clang-tools-extra/trunk/unittests/clangd/CMakeLists.txt (original)
> +++ clang-tools-extra/trunk/unittests/clangd/CMakeLists.txt Mon Nov  6
> 07:40:30 2017
> @@ -10,6 +10,7 @@ include_directories(
> 
>  add_extra_unittest(ClangdTests
>    ClangdTests.cpp
> +  JSONExprTests.cpp
>    TraceTests.cpp
>    )
> 
> 
> Added: clang-tools-extra/trunk/unittests/clangd/JSONExprTests.cpp
> URL: http://llvm.org/viewvc/llvm-project/clang-tools-
> extra/trunk/unittests/clangd/JSONExprTests.cpp?rev=317486&view=auto
> ==============================================================================
> --- clang-tools-extra/trunk/unittests/clangd/JSONExprTests.cpp (added)
> +++ clang-tools-extra/trunk/unittests/clangd/JSONExprTests.cpp Mon Nov  6
> 07:40:30 2017
> @@ -0,0 +1,112 @@
> +//===-- JSONExprTests.cpp - JSON expression unit tests ----------*- C++ -*-
> ===//
> +//
> +//                     The LLVM Compiler Infrastructure
> +//
> +// This file is distributed under the University of Illinois Open Source
> +// License. See LICENSE.TXT for details.
> +//
> +//===----------------------------------------------------------------------
> ===//
> +
> +#include "JSONExpr.h"
> +
> +#include "gmock/gmock.h"
> +#include "gtest/gtest.h"
> +
> +namespace clang {
> +namespace clangd {
> +namespace json {
> +namespace {
> +
> +std::string s(const Expr &E) { return llvm::formatv("{0}", E).str(); }
> +std::string sp(const Expr &E) { return llvm::formatv("{0:2}", E).str(); }
> +
> +TEST(JSONExprTests, Types) {
> +  EXPECT_EQ("true", s(true));
> +  EXPECT_EQ("null", s(nullptr));
> +  EXPECT_EQ("2.5", s(2.5));
> +  EXPECT_EQ(R"("foo")", s("foo"));
> +  EXPECT_EQ("[1,2,3]", s({1, 2, 3}));
> +  EXPECT_EQ(R"({"x":10,"y":20})", s(obj{{"x", 10}, {"y", 20}}));
> +}
> +
> +TEST(JSONExprTests, Constructors) {
> +  // Lots of edge cases around empty and singleton init lists.
> +  EXPECT_EQ("[[[3]]]", s({{{3}}}));
> +  EXPECT_EQ("[[[]]]", s({{{}}}));
> +  EXPECT_EQ("[[{}]]", s({{obj{}}}));
> +  EXPECT_EQ(R"({"A":{"B":{}}})", s(obj{{"A", obj{{"B", obj{}}}}}));
> +  EXPECT_EQ(R"({"A":{"B":{"X":"Y"}}})",
> +            s(obj{{"A", obj{{"B", obj{{"X", "Y"}}}}}}));
> +}
> +
> +TEST(JSONExprTests, StringOwnership) {
> +  char X[] = "Hello";
> +  Expr Alias = static_cast<const char *>(X);
> +  X[1] = 'a';
> +  EXPECT_EQ(R"("Hallo")", s(Alias));
> +
> +  std::string Y = "Hello";
> +  Expr Copy = Y;
> +  Y[1] = 'a';
> +  EXPECT_EQ(R"("Hello")", s(Copy));
> +}
> +
> +TEST(JSONExprTests, CanonicalOutput) {
> +  // Objects are sorted (but arrays aren't)!
> +  EXPECT_EQ(R"({"a":1,"b":2,"c":3})", s(obj{{"a", 1}, {"c", 3}, {"b", 2}}));
> +  EXPECT_EQ(R"(["a","c","b"])", s({"a", "c", "b"}));
> +  EXPECT_EQ("3", s(3.0));
> +}
> +
> +TEST(JSONExprTests, Escaping) {
> +  std::string test = {
> +      0,                    // Strings may contain nulls.
> +      '\b',   '\f',         // Have mnemonics, but we escape numerically.
> +      '\r',   '\n',   '\t', // Escaped with mnemonics.
> +      'S',    '\"',   '\\', // Printable ASCII characters.
> +      '\x7f',               // Delete is not escaped.
> +      '\xce', '\x94',       // Non-ASCII UTF-8 is not escaped.
> +  };
> +  EXPECT_EQ(R"("\u0000\u0008\u000c\r\n\tS\"\\)"
> +            u8"\x7fΔ\"",
> +            s(test));
> +
> +  EXPECT_EQ(R"({"object keys are\nescaped":true})",
> +            s(obj{{"object keys are\nescaped", true}}));
> +}
> +
> +TEST(JSONExprTests, PrettyPrinting) {
> +  EXPECT_EQ(
> +      R"({
> +  "empty_array": [],
> +  "empty_object": {},
> +  "full_array": [
> +    1,
> +    null
> +  ],
> +  "full_object": {
> +    "nested_array": [
> +      {
> +        "property": "value"
> +      }
> +    ]
> +  }
> +})",
> +      sp(obj{
> +          {"empty_object", obj{}},
> +          {"empty_array", {}},
> +          {"full_array", {1, nullptr}},
> +          {"full_object",
> +           obj{
> +               {"nested_array",
> +                {obj{
> +                    {"property", "value"},
> +                }}},
> +           }},
> +      }));
> +}
> +
> +} // namespace
> +} // namespace json
> +} // namespace clangd
> +} // namespace clang
> 
> 
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