1 files changed, 133 insertions, 0 deletions
diff --git a/lib/Support/Twine.cpp b/lib/Support/Twine.cpp
new file mode 100644
index 0000000..292c0c2
--- /dev/null
+++ b/lib/Support/Twine.cpp
@@ -0,0 +1,133 @@
+//===-- Twine.cpp - Fast Temporary String Concatenation -------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/Twine.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+
+std::string Twine::str() const {
+  SmallString<256> Vec;
+  toVector(Vec);
+  return std::string(Vec.begin(), Vec.end());
+}
+
+void Twine::toVector(SmallVectorImpl<char> &Out) const {
+  raw_svector_ostream OS(Out);
+  print(OS);
+}
+
+void Twine::printOneChild(raw_ostream &OS, const void *Ptr, 
+                          NodeKind Kind) const {
+  switch (Kind) {
+  case Twine::NullKind: break;
+  case Twine::EmptyKind: break;
+  case Twine::TwineKind:
+    static_cast<const Twine*>(Ptr)->print(OS); 
+    break;
+  case Twine::CStringKind: 
+    OS << static_cast<const char*>(Ptr); 
+    break;
+  case Twine::StdStringKind:
+    OS << *static_cast<const std::string*>(Ptr); 
+    break;
+  case Twine::StringRefKind:
+    OS << *static_cast<const StringRef*>(Ptr); 
+    break;
+  case Twine::DecUIKind:
+    OS << *static_cast<const unsigned int*>(Ptr);
+    break;
+  case Twine::DecIKind:
+    OS << *static_cast<const int*>(Ptr);
+    break;
+  case Twine::DecULKind:
+    OS << *static_cast<const unsigned long*>(Ptr);
+    break;
+  case Twine::DecLKind:
+    OS << *static_cast<const long*>(Ptr);
+    break;
+  case Twine::DecULLKind:
+    OS << *static_cast<const unsigned long long*>(Ptr);
+    break;
+  case Twine::DecLLKind:
+    OS << *static_cast<const long long*>(Ptr);
+    break;
+  case Twine::UHexKind:
+    OS.write_hex(*static_cast<const uint64_t*>(Ptr));
+    break;
+  }
+}
+
+void Twine::printOneChildRepr(raw_ostream &OS, const void *Ptr, 
+                              NodeKind Kind) const {
+  switch (Kind) {
+  case Twine::NullKind:
+    OS << "null"; break;
+  case Twine::EmptyKind:
+    OS << "empty"; break;
+  case Twine::TwineKind:
+    OS << "rope:";
+    static_cast<const Twine*>(Ptr)->printRepr(OS);
+    break;
+  case Twine::CStringKind:
+    OS << "cstring:\""
+       << static_cast<const char*>(Ptr) << "\"";
+    break;
+  case Twine::StdStringKind:
+    OS << "std::string:\""
+       << static_cast<const std::string*>(Ptr) << "\"";
+    break;
+  case Twine::StringRefKind:
+    OS << "stringref:\""
+       << static_cast<const StringRef*>(Ptr) << "\"";
+    break;
+  case Twine::DecUIKind:
+    OS << "decUI:\"" << *static_cast<const unsigned int*>(Ptr) << "\"";
+    break;
+  case Twine::DecIKind:
+    OS << "decI:\"" << *static_cast<const int*>(Ptr) << "\"";
+    break;
+  case Twine::DecULKind:
+    OS << "decUL:\"" << *static_cast<const unsigned long*>(Ptr) << "\"";
+    break;
+  case Twine::DecLKind:
+    OS << "decL:\"" << *static_cast<const long*>(Ptr) << "\"";
+    break;
+  case Twine::DecULLKind:
+    OS << "decULL:\"" << *static_cast<const unsigned long long*>(Ptr) << "\"";
+    break;
+  case Twine::DecLLKind:
+    OS << "decLL:\"" << *static_cast<const long long*>(Ptr) << "\"";
+    break;
+  case Twine::UHexKind:
+    OS << "uhex:\"" << static_cast<const uint64_t*>(Ptr) << "\"";
+    break;
+  }
+}
+
+void Twine::print(raw_ostream &OS) const {
+  printOneChild(OS, LHS, getLHSKind());
+  printOneChild(OS, RHS, getRHSKind());
+}
+
+void Twine::printRepr(raw_ostream &OS) const {
+  OS << "(Twine ";
+  printOneChildRepr(OS, LHS, getLHSKind());
+  OS << " ";
+  printOneChildRepr(OS, RHS, getRHSKind());
+  OS << ")";
+}
+
+void Twine::dump() const {
+  print(llvm::errs());
+}
+
+void Twine::dumpRepr() const {
+  printRepr(llvm::errs());
+}