MachineCopyPropagation has special logic for removing COPY instructions. It will...

[oota-llvm.git] / lib / Object / YAML.cpp

diff --git a/lib/Object/YAML.cpp b/lib/Object/YAML.cpp
index 36b19974b0e35f54f8caac26c09f6352bca202a3..c527bde090e8e6ea2127695e4063628e42427129 100644 (file)
--- a/lib/Object/YAML.cpp
+++ b/lib/Object/YAML.cpp
@@ -13,22 +13,56 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Object/YAML.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/raw_ostream.h"
+#include <cctype>
 
 using namespace llvm;
+using namespace object::yaml;
 
 void yaml::ScalarTraits<object::yaml::BinaryRef>::output(
     const object::yaml::BinaryRef &Val, void *, llvm::raw_ostream &Out) {
-  ArrayRef<uint8_t> Data = Val.getBinary();
-  for (ArrayRef<uint8_t>::iterator I = Data.begin(), E = Data.end(); I != E;
-       ++I) {
-    uint8_t Byte = *I;
-    Out << hexdigit(Byte >> 4);
-    Out << hexdigit(Byte & 0xf);
-  }
+  Val.writeAsHex(Out);
 }
 
 StringRef yaml::ScalarTraits<object::yaml::BinaryRef>::input(
     StringRef Scalar, void *, object::yaml::BinaryRef &Val) {
+  if (Scalar.size() % 2 != 0)
+    return "BinaryRef hex string must contain an even number of nybbles.";
+  // TODO: Can we improve YAMLIO to permit a more accurate diagnostic here?
+  // (e.g. a caret pointing to the offending character).
+  for (unsigned I = 0, N = Scalar.size(); I != N; ++I)
+    if (!isxdigit(Scalar[I]))
+      return "BinaryRef hex string must contain only hex digits.";
   Val = object::yaml::BinaryRef(Scalar);
   return StringRef();
 }
+
+void BinaryRef::writeAsBinary(raw_ostream &OS) const {
+  if (!DataIsHexString) {
+    OS.write((const char *)Data.data(), Data.size());
+    return;
+  }
+  for (unsigned I = 0, N = Data.size(); I != N; I += 2) {
+    uint8_t Byte;
+    StringRef((const char *)&Data[I],  2).getAsInteger(16, Byte);
+    OS.write(Byte);
+  }
+}
+
+void BinaryRef::writeAsHex(raw_ostream &OS) const {
+  if (binary_size() == 0) {
+    OS << "\"\"";
+    return;
+  }
+  if (DataIsHexString) {
+    OS.write((const char *)Data.data(), Data.size());
+    return;
+  }
+  for (ArrayRef<uint8_t>::iterator I = Data.begin(), E = Data.end(); I != E;
+       ++I) {
+    uint8_t Byte = *I;
+    OS << hexdigit(Byte >> 4);
+    OS << hexdigit(Byte & 0xf);
+  }
+}