Check in LLVM r95781.
diff --git a/lib/Index/GlobalSelector.cpp b/lib/Index/GlobalSelector.cpp
new file mode 100644
index 0000000..2b2ca6d
--- /dev/null
+++ b/lib/Index/GlobalSelector.cpp
@@ -0,0 +1,75 @@
+//===-- GlobalSelector.cpp - Cross-translation-unit "token" for selectors -===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// GlobalSelector is a ASTContext-independent way to refer to selectors.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Index/GlobalSelector.h"
+#include "ProgramImpl.h"
+#include "clang/Index/Program.h"
+#include "clang/AST/ASTContext.h"
+using namespace clang;
+using namespace idx;
+
+/// \brief Get the ASTContext-specific selector.
+Selector GlobalSelector::getSelector(ASTContext &AST) const {
+ if (isInvalid())
+ return Selector();
+
+ Selector GlobSel = Selector(reinterpret_cast<uintptr_t>(Val));
+
+ llvm::SmallVector<IdentifierInfo *, 8> Ids;
+ for (unsigned i = 0, e = GlobSel.isUnarySelector() ? 1 : GlobSel.getNumArgs();
+ i != e; ++i) {
+ IdentifierInfo *GlobII = GlobSel.getIdentifierInfoForSlot(i);
+ IdentifierInfo *II =
+ &AST.Idents.get(GlobII->getNameStart(),
+ GlobII->getNameStart() + GlobII->getLength());
+ Ids.push_back(II);
+ }
+
+ return AST.Selectors.getSelector(GlobSel.getNumArgs(), Ids.data());
+}
+
+/// \brief Get a printable name for debugging purpose.
+std::string GlobalSelector::getPrintableName() const {
+ if (isInvalid())
+ return "<< Invalid >>";
+
+ Selector GlobSel = Selector(reinterpret_cast<uintptr_t>(Val));
+ return GlobSel.getAsString();
+}
+
+/// \brief Get a GlobalSelector for the ASTContext-specific selector.
+GlobalSelector GlobalSelector::get(Selector Sel, Program &Prog) {
+ if (Sel.isNull())
+ return GlobalSelector();
+
+ ProgramImpl &ProgImpl = *static_cast<ProgramImpl*>(Prog.Impl);
+
+ llvm::SmallVector<IdentifierInfo *, 8> Ids;
+ for (unsigned i = 0, e = Sel.isUnarySelector() ? 1 : Sel.getNumArgs();
+ i != e; ++i) {
+ IdentifierInfo *II = Sel.getIdentifierInfoForSlot(i);
+ IdentifierInfo *GlobII =
+ &ProgImpl.getIdents().get(II->getNameStart(),
+ II->getNameStart() + II->getLength());
+ Ids.push_back(GlobII);
+ }
+
+ Selector GlobSel = ProgImpl.getSelectors().getSelector(Sel.getNumArgs(),
+ Ids.data());
+ return GlobalSelector(GlobSel.getAsOpaquePtr());
+}
+
+unsigned
+llvm::DenseMapInfo<GlobalSelector>::getHashValue(GlobalSelector Sel) {
+ return DenseMapInfo<void*>::getHashValue(Sel.getAsOpaquePtr());
+}