1 files changed, 197 insertions, 0 deletions
diff --git a/clang/tools/c-index-test/core_main.cpp b/clang/tools/c-index-test/core_main.cpp
new file mode 100644
index 00000000000..d2faf2d0692
--- /dev/null
+++ b/clang/tools/c-index-test/core_main.cpp
@@ -0,0 +1,197 @@
+//===-- core_main.cpp - Core Index Tool testbed ---------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Frontend/ASTUnit.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Frontend/CompilerInvocation.h"
+#include "clang/Frontend/FrontendAction.h"
+#include "clang/Index/IndexingAction.h"
+#include "clang/Index/IndexDataConsumer.h"
+#include "clang/Index/USRGeneration.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Signals.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/PrettyStackTrace.h"
+
+using namespace clang;
+using namespace clang::index;
+using namespace llvm;
+
+extern "C" int indextest_core_main(int argc, const char **argv);
+
+namespace {
+
+enum class ActionType {
+  None,
+  PrintSourceSymbols,
+};
+
+namespace options {
+
+static cl::OptionCategory IndexTestCoreCategory("index-test-core options");
+
+static cl::opt<ActionType>
+Action(cl::desc("Action:"), cl::init(ActionType::None),
+       cl::values(
+          clEnumValN(ActionType::PrintSourceSymbols,
+                     "print-source-symbols", "Print symbols from source"),
+          clEnumValEnd),
+       cl::cat(IndexTestCoreCategory));
+
+static cl::extrahelp MoreHelp(
+  "\nAdd \"-- <compiler arguments>\" at the end to setup the compiler "
+  "invocation\n"
+);
+
+}
+} // anonymous namespace
+
+static void printSymbolInfo(SymbolInfo SymInfo, raw_ostream &OS);
+static void printSymbolNameAndUSR(const Decl *D, ASTContext &Ctx,
+                                  raw_ostream &OS);
+
+namespace {
+
+class PrintIndexDataConsumer : public IndexDataConsumer {
+  raw_ostream &OS;
+
+public:
+  PrintIndexDataConsumer(raw_ostream &OS) : OS(OS) {
+  }
+
+  bool handleDeclOccurence(const Decl *D, SymbolRoleSet Roles,
+                           ArrayRef<SymbolRelation> Relations,
+                           FileID FID, unsigned Offset,
+                           ASTNodeInfo ASTNode) override {
+    ASTContext &Ctx = D->getASTContext();
+    SourceManager &SM = Ctx.getSourceManager();
+
+    unsigned Line = SM.getLineNumber(FID, Offset);
+    unsigned Col = SM.getColumnNumber(FID, Offset);
+    OS << Line << ':' << Col << " | ";
+
+    printSymbolInfo(getSymbolInfo(D), OS);
+    OS << " | ";
+
+    printSymbolNameAndUSR(D, Ctx, OS);
+    OS << " | ";
+
+    printSymbolRoles(Roles, OS);
+    OS << " | ";
+
+    OS << "rel: " << Relations.size() << '\n';
+
+    for (auto &SymRel : Relations) {
+      OS << '\t';
+      printSymbolRoles(SymRel.Roles, OS);
+      OS << " | ";
+      printSymbolNameAndUSR(SymRel.RelatedSymbol, Ctx, OS);
+      OS << '\n';
+    }
+
+    return true;
+  }
+};
+
+} // anonymous namespace
+
+//===----------------------------------------------------------------------===//
+// Print Source Symbols
+//===----------------------------------------------------------------------===//
+
+static bool printSourceSymbols(ArrayRef<const char *> Args) {
+  SmallVector<const char *, 4> ArgsWithProgName;
+  ArgsWithProgName.push_back("clang");
+  ArgsWithProgName.append(Args.begin(), Args.end());
+  IntrusiveRefCntPtr<DiagnosticsEngine>
+    Diags(CompilerInstance::createDiagnostics(new DiagnosticOptions));
+  IntrusiveRefCntPtr<CompilerInvocation>
+    CInvok(createInvocationFromCommandLine(ArgsWithProgName, Diags));
+  if (!CInvok)
+    return true;
+
+  auto DataConsumer = std::make_shared<PrintIndexDataConsumer>(outs());
+  IndexingOptions IndexOpts;
+  std::unique_ptr<FrontendAction> IndexAction;
+  IndexAction = createIndexingAction(DataConsumer, IndexOpts);
+
+  auto PCHContainerOps = std::make_shared<PCHContainerOperations>();
+  ASTUnit *Unit =
+   ASTUnit::LoadFromCompilerInvocationAction(CInvok.get(), PCHContainerOps,
+                                             Diags, IndexAction.get());
+
+  if (!Unit)
+    return true;
+
+  return false;
+}
+
+//===----------------------------------------------------------------------===//
+// Helper Utils
+//===----------------------------------------------------------------------===//
+
+static void printSymbolInfo(SymbolInfo SymInfo, raw_ostream &OS) {
+  OS << getSymbolKindString(SymInfo.Kind);
+  if (SymInfo.TemplateKind != SymbolCXXTemplateKind::NonTemplate) {
+    OS << '-' << getTemplateKindStr(SymInfo.TemplateKind);
+  }
+  OS << '/' << getSymbolLanguageString(SymInfo.Lang);
+}
+
+static void printSymbolNameAndUSR(const Decl *D, ASTContext &Ctx,
+                                  raw_ostream &OS) {
+  if (auto *ND = dyn_cast<NamedDecl>(D)) {
+    PrintingPolicy PrintPolicy(Ctx.getLangOpts());
+    ND->getDeclName().print(OS, PrintPolicy);
+  } else {
+    OS << "<no-name>";
+  }
+  OS << " | ";
+
+  SmallString<256> USRBuf;
+  if (generateUSRForDecl(D, USRBuf)) {
+    OS << "<no-usr>";
+  } else {
+    OS << USRBuf;
+  }
+}
+
+//===----------------------------------------------------------------------===//
+// Command line processing.
+//===----------------------------------------------------------------------===//
+
+int indextest_core_main(int argc, const char **argv) {
+  sys::PrintStackTraceOnErrorSignal();
+  PrettyStackTraceProgram X(argc, argv);
+
+  std::vector<const char *> CompArgs;
+  const char *const *DoubleDash = std::find(argv, argv + argc, StringRef("--"));
+  if (DoubleDash != argv + argc) {
+    CompArgs = std::vector<const char *>(DoubleDash + 1, argv + argc);
+    argc = DoubleDash - argv;
+  }
+
+  cl::HideUnrelatedOptions(options::IndexTestCoreCategory);
+  cl::ParseCommandLineOptions(argc, argv, "index-test-core");
+
+  if (options::Action == ActionType::None) {
+    errs() << "error: action required; pass '-help' for options\n";
+    return 1;
+  }
+
+  if (options::Action == ActionType::PrintSourceSymbols) {
+    if (CompArgs.empty()) {
+      errs() << "error: missing compiler args; pass '-- <compiler arguments>'\n";
+      return 1;
+    }
+    return printSourceSymbols(CompArgs);
+  }
+
+  return 0;
+}