Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 2877 deletions

diff --git a/gnu/llvm/unittests/Support/YAMLIOTest.cpp b/gnu/llvm/unittests/Support/YAMLIOTest.cpp
deleted file mode 100644
index 17f38f9b86c..00000000000
--- a/gnu/llvm/unittests/Support/YAMLIOTest.cpp
+++ /dev/null
@@ -1,2877 +0,0 @@
-//===- unittest/Support/YAMLIOTest.cpp ------------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ADT/StringMap.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/Support/Casting.h"
-#include "llvm/Support/Endian.h"
-#include "llvm/Support/Format.h"
-#include "llvm/Support/YAMLTraits.h"
-#include "gmock/gmock.h"
-#include "gtest/gtest.h"
-
-using llvm::yaml::Hex16;
-using llvm::yaml::Hex32;
-using llvm::yaml::Hex64;
-using llvm::yaml::Hex8;
-using llvm::yaml::Input;
-using llvm::yaml::IO;
-using llvm::yaml::isNumeric;
-using llvm::yaml::MappingNormalization;
-using llvm::yaml::MappingTraits;
-using llvm::yaml::Output;
-using llvm::yaml::ScalarTraits;
-using ::testing::StartsWith;
-
-
-
-
-static void suppressErrorMessages(const llvm::SMDiagnostic &, void *) {
-}
-
-
-
-//===----------------------------------------------------------------------===//
-//  Test MappingTraits
-//===----------------------------------------------------------------------===//
-
-struct FooBar {
-  int foo;
-  int bar;
-};
-typedef std::vector<FooBar> FooBarSequence;
-
-LLVM_YAML_IS_SEQUENCE_VECTOR(FooBar)
-
-struct FooBarContainer {
-  FooBarSequence fbs;
-};
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<FooBar> {
-    static void mapping(IO &io, FooBar& fb) {
-      io.mapRequired("foo",    fb.foo);
-      io.mapRequired("bar",    fb.bar);
-    }
-  };
-
-  template <> struct MappingTraits<FooBarContainer> {
-    static void mapping(IO &io, FooBarContainer &fb) {
-      io.mapRequired("fbs", fb.fbs);
-    }
-  };
-}
-}
-
-
-//
-// Test the reading of a yaml mapping
-//
-TEST(YAMLIO, TestMapRead) {
-  FooBar doc;
-  {
-    Input yin("---\nfoo:  3\nbar:  5\n...\n");
-    yin >> doc;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(doc.foo, 3);
-    EXPECT_EQ(doc.bar, 5);
-  }
-
-  {
-    Input yin("{foo: 3, bar: 5}");
-    yin >> doc;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(doc.foo, 3);
-    EXPECT_EQ(doc.bar, 5);
-  }
-}
-
-TEST(YAMLIO, TestMalformedMapRead) {
-  FooBar doc;
-  Input yin("{foo: 3; bar: 5}", nullptr, suppressErrorMessages);
-  yin >> doc;
-  EXPECT_TRUE(!!yin.error());
-}
-
-//
-// Test the reading of a yaml sequence of mappings
-//
-TEST(YAMLIO, TestSequenceMapRead) {
-  FooBarSequence seq;
-  Input yin("---\n - foo:  3\n   bar:  5\n - foo:  7\n   bar:  9\n...\n");
-  yin >> seq;
-
-  EXPECT_FALSE(yin.error());
-  EXPECT_EQ(seq.size(), 2UL);
-  FooBar& map1 = seq[0];
-  FooBar& map2 = seq[1];
-  EXPECT_EQ(map1.foo, 3);
-  EXPECT_EQ(map1.bar, 5);
-  EXPECT_EQ(map2.foo, 7);
-  EXPECT_EQ(map2.bar, 9);
-}
-
-//
-// Test the reading of a map containing a yaml sequence of mappings
-//
-TEST(YAMLIO, TestContainerSequenceMapRead) {
-  {
-    FooBarContainer cont;
-    Input yin2("---\nfbs:\n - foo: 3\n   bar: 5\n - foo: 7\n   bar: 9\n...\n");
-    yin2 >> cont;
-
-    EXPECT_FALSE(yin2.error());
-    EXPECT_EQ(cont.fbs.size(), 2UL);
-    EXPECT_EQ(cont.fbs[0].foo, 3);
-    EXPECT_EQ(cont.fbs[0].bar, 5);
-    EXPECT_EQ(cont.fbs[1].foo, 7);
-    EXPECT_EQ(cont.fbs[1].bar, 9);
-  }
-
-  {
-    FooBarContainer cont;
-    Input yin("---\nfbs:\n...\n");
-    yin >> cont;
-    // Okay: Empty node represents an empty array.
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(cont.fbs.size(), 0UL);
-  }
-
-  {
-    FooBarContainer cont;
-    Input yin("---\nfbs: !!null null\n...\n");
-    yin >> cont;
-    // Okay: null represents an empty array.
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(cont.fbs.size(), 0UL);
-  }
-
-  {
-    FooBarContainer cont;
-    Input yin("---\nfbs: ~\n...\n");
-    yin >> cont;
-    // Okay: null represents an empty array.
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(cont.fbs.size(), 0UL);
-  }
-
-  {
-    FooBarContainer cont;
-    Input yin("---\nfbs: null\n...\n");
-    yin >> cont;
-    // Okay: null represents an empty array.
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(cont.fbs.size(), 0UL);
-  }
-}
-
-//
-// Test the reading of a map containing a malformed yaml sequence
-//
-TEST(YAMLIO, TestMalformedContainerSequenceMapRead) {
-  {
-    FooBarContainer cont;
-    Input yin("---\nfbs:\n   foo: 3\n   bar: 5\n...\n", nullptr,
-              suppressErrorMessages);
-    yin >> cont;
-    // Error: fbs is not a sequence.
-    EXPECT_TRUE(!!yin.error());
-    EXPECT_EQ(cont.fbs.size(), 0UL);
-  }
-
-  {
-    FooBarContainer cont;
-    Input yin("---\nfbs: 'scalar'\n...\n", nullptr, suppressErrorMessages);
-    yin >> cont;
-    // This should be an error.
-    EXPECT_TRUE(!!yin.error());
-    EXPECT_EQ(cont.fbs.size(), 0UL);
-  }
-}
-
-//
-// Test writing then reading back a sequence of mappings
-//
-TEST(YAMLIO, TestSequenceMapWriteAndRead) {
-  std::string intermediate;
-  {
-    FooBar entry1;
-    entry1.foo = 10;
-    entry1.bar = -3;
-    FooBar entry2;
-    entry2.foo = 257;
-    entry2.bar = 0;
-    FooBarSequence seq;
-    seq.push_back(entry1);
-    seq.push_back(entry2);
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << seq;
-  }
-
-  {
-    Input yin(intermediate);
-    FooBarSequence seq2;
-    yin >> seq2;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(seq2.size(), 2UL);
-    FooBar& map1 = seq2[0];
-    FooBar& map2 = seq2[1];
-    EXPECT_EQ(map1.foo, 10);
-    EXPECT_EQ(map1.bar, -3);
-    EXPECT_EQ(map2.foo, 257);
-    EXPECT_EQ(map2.bar, 0);
-  }
-}
-
-//
-// Test YAML filename handling.
-//
-static void testErrorFilename(const llvm::SMDiagnostic &Error, void *) {
-  EXPECT_EQ(Error.getFilename(), "foo.yaml");
-}
-
-TEST(YAMLIO, TestGivenFilename) {
-  auto Buffer = llvm::MemoryBuffer::getMemBuffer("{ x: 42 }", "foo.yaml");
-  Input yin(*Buffer, nullptr, testErrorFilename);
-  FooBar Value;
-  yin >> Value;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-struct WithStringField {
-  std::string str1;
-  std::string str2;
-  std::string str3;
-};
-
-namespace llvm {
-namespace yaml {
-template <> struct MappingTraits<WithStringField> {
-  static void mapping(IO &io, WithStringField &fb) {
-    io.mapRequired("str1", fb.str1);
-    io.mapRequired("str2", fb.str2);
-    io.mapRequired("str3", fb.str3);
-  }
-};
-} // namespace yaml
-} // namespace llvm
-
-TEST(YAMLIO, MultilineStrings) {
-  WithStringField Original;
-  Original.str1 = "a multiline string\nfoobarbaz";
-  Original.str2 = "another one\rfoobarbaz";
-  Original.str3 = "a one-line string";
-
-  std::string Serialized;
-  {
-    llvm::raw_string_ostream OS(Serialized);
-    Output YOut(OS);
-    YOut << Original;
-  }
-  auto Expected = "---\n"
-                  "str1:            'a multiline string\n"
-                  "foobarbaz'\n"
-                  "str2:            'another one\r"
-                  "foobarbaz'\n"
-                  "str3:            a one-line string\n"
-                  "...\n";
-  ASSERT_EQ(Serialized, Expected);
-
-  // Also check it parses back without the errors.
-  WithStringField Deserialized;
-  {
-    Input YIn(Serialized);
-    YIn >> Deserialized;
-    ASSERT_FALSE(YIn.error())
-        << "Parsing error occurred during deserialization. Serialized string:\n"
-        << Serialized;
-  }
-  EXPECT_EQ(Original.str1, Deserialized.str1);
-  EXPECT_EQ(Original.str2, Deserialized.str2);
-  EXPECT_EQ(Original.str3, Deserialized.str3);
-}
-
-TEST(YAMLIO, NoQuotesForTab) {
-  WithStringField WithTab;
-  WithTab.str1 = "aba\tcaba";
-  std::string Serialized;
-  {
-    llvm::raw_string_ostream OS(Serialized);
-    Output YOut(OS);
-    YOut << WithTab;
-  }
-  auto ExpectedPrefix = "---\n"
-                        "str1:            aba\tcaba\n";
-  EXPECT_THAT(Serialized, StartsWith(ExpectedPrefix));
-}
-
-//===----------------------------------------------------------------------===//
-//  Test built-in types
-//===----------------------------------------------------------------------===//
-
-struct BuiltInTypes {
-  llvm::StringRef str;
-  std::string stdstr;
-  uint64_t        u64;
-  uint32_t        u32;
-  uint16_t        u16;
-  uint8_t         u8;
-  bool            b;
-  int64_t         s64;
-  int32_t         s32;
-  int16_t         s16;
-  int8_t          s8;
-  float           f;
-  double          d;
-  Hex8            h8;
-  Hex16           h16;
-  Hex32           h32;
-  Hex64           h64;
-};
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<BuiltInTypes> {
-    static void mapping(IO &io, BuiltInTypes& bt) {
-      io.mapRequired("str",      bt.str);
-      io.mapRequired("stdstr",   bt.stdstr);
-      io.mapRequired("u64",      bt.u64);
-      io.mapRequired("u32",      bt.u32);
-      io.mapRequired("u16",      bt.u16);
-      io.mapRequired("u8",       bt.u8);
-      io.mapRequired("b",        bt.b);
-      io.mapRequired("s64",      bt.s64);
-      io.mapRequired("s32",      bt.s32);
-      io.mapRequired("s16",      bt.s16);
-      io.mapRequired("s8",       bt.s8);
-      io.mapRequired("f",        bt.f);
-      io.mapRequired("d",        bt.d);
-      io.mapRequired("h8",       bt.h8);
-      io.mapRequired("h16",      bt.h16);
-      io.mapRequired("h32",      bt.h32);
-      io.mapRequired("h64",      bt.h64);
-    }
-  };
-}
-}
-
-
-//
-// Test the reading of all built-in scalar conversions
-//
-TEST(YAMLIO, TestReadBuiltInTypes) {
-  BuiltInTypes map;
-  Input yin("---\n"
-            "str:      hello there\n"
-            "stdstr:   hello where?\n"
-            "u64:      5000000000\n"
-            "u32:      4000000000\n"
-            "u16:      65000\n"
-            "u8:       255\n"
-            "b:        false\n"
-            "s64:      -5000000000\n"
-            "s32:      -2000000000\n"
-            "s16:      -32000\n"
-            "s8:       -127\n"
-            "f:        137.125\n"
-            "d:        -2.8625\n"
-            "h8:       0xFF\n"
-            "h16:      0x8765\n"
-            "h32:      0xFEDCBA98\n"
-            "h64:      0xFEDCBA9876543210\n"
-           "...\n");
-  yin >> map;
-
-  EXPECT_FALSE(yin.error());
-  EXPECT_TRUE(map.str.equals("hello there"));
-  EXPECT_TRUE(map.stdstr == "hello where?");
-  EXPECT_EQ(map.u64, 5000000000ULL);
-  EXPECT_EQ(map.u32, 4000000000U);
-  EXPECT_EQ(map.u16, 65000);
-  EXPECT_EQ(map.u8,  255);
-  EXPECT_EQ(map.b,   false);
-  EXPECT_EQ(map.s64, -5000000000LL);
-  EXPECT_EQ(map.s32, -2000000000L);
-  EXPECT_EQ(map.s16, -32000);
-  EXPECT_EQ(map.s8,  -127);
-  EXPECT_EQ(map.f,   137.125);
-  EXPECT_EQ(map.d,   -2.8625);
-  EXPECT_EQ(map.h8,  Hex8(255));
-  EXPECT_EQ(map.h16, Hex16(0x8765));
-  EXPECT_EQ(map.h32, Hex32(0xFEDCBA98));
-  EXPECT_EQ(map.h64, Hex64(0xFEDCBA9876543210LL));
-}
-
-
-//
-// Test writing then reading back all built-in scalar types
-//
-TEST(YAMLIO, TestReadWriteBuiltInTypes) {
-  std::string intermediate;
-  {
-    BuiltInTypes map;
-    map.str = "one two";
-    map.stdstr = "three four";
-    map.u64 = 6000000000ULL;
-    map.u32 = 3000000000U;
-    map.u16 = 50000;
-    map.u8  = 254;
-    map.b   = true;
-    map.s64 = -6000000000LL;
-    map.s32 = -2000000000;
-    map.s16 = -32000;
-    map.s8  = -128;
-    map.f   = 3.25;
-    map.d   = -2.8625;
-    map.h8  = 254;
-    map.h16 = 50000;
-    map.h32 = 3000000000U;
-    map.h64 = 6000000000LL;
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << map;
-  }
-
-  {
-    Input yin(intermediate);
-    BuiltInTypes map;
-    yin >> map;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_TRUE(map.str.equals("one two"));
-    EXPECT_TRUE(map.stdstr == "three four");
-    EXPECT_EQ(map.u64,      6000000000ULL);
-    EXPECT_EQ(map.u32,      3000000000U);
-    EXPECT_EQ(map.u16,      50000);
-    EXPECT_EQ(map.u8,       254);
-    EXPECT_EQ(map.b,        true);
-    EXPECT_EQ(map.s64,      -6000000000LL);
-    EXPECT_EQ(map.s32,      -2000000000L);
-    EXPECT_EQ(map.s16,      -32000);
-    EXPECT_EQ(map.s8,       -128);
-    EXPECT_EQ(map.f,        3.25);
-    EXPECT_EQ(map.d,        -2.8625);
-    EXPECT_EQ(map.h8,       Hex8(254));
-    EXPECT_EQ(map.h16,      Hex16(50000));
-    EXPECT_EQ(map.h32,      Hex32(3000000000U));
-    EXPECT_EQ(map.h64,      Hex64(6000000000LL));
-  }
-}
-
-//===----------------------------------------------------------------------===//
-//  Test endian-aware types
-//===----------------------------------------------------------------------===//
-
-struct EndianTypes {
-  typedef llvm::support::detail::packed_endian_specific_integral<
-      float, llvm::support::little, llvm::support::unaligned>
-      ulittle_float;
-  typedef llvm::support::detail::packed_endian_specific_integral<
-      double, llvm::support::little, llvm::support::unaligned>
-      ulittle_double;
-
-  llvm::support::ulittle64_t u64;
-  llvm::support::ulittle32_t u32;
-  llvm::support::ulittle16_t u16;
-  llvm::support::little64_t s64;
-  llvm::support::little32_t s32;
-  llvm::support::little16_t s16;
-  ulittle_float f;
-  ulittle_double d;
-};
-
-namespace llvm {
-namespace yaml {
-template <> struct MappingTraits<EndianTypes> {
-  static void mapping(IO &io, EndianTypes &et) {
-    io.mapRequired("u64", et.u64);
-    io.mapRequired("u32", et.u32);
-    io.mapRequired("u16", et.u16);
-    io.mapRequired("s64", et.s64);
-    io.mapRequired("s32", et.s32);
-    io.mapRequired("s16", et.s16);
-    io.mapRequired("f", et.f);
-    io.mapRequired("d", et.d);
-  }
-};
-}
-}
-
-//
-// Test the reading of all endian scalar conversions
-//
-TEST(YAMLIO, TestReadEndianTypes) {
-  EndianTypes map;
-  Input yin("---\n"
-            "u64:      5000000000\n"
-            "u32:      4000000000\n"
-            "u16:      65000\n"
-            "s64:      -5000000000\n"
-            "s32:      -2000000000\n"
-            "s16:      -32000\n"
-            "f:        3.25\n"
-            "d:        -2.8625\n"
-            "...\n");
-  yin >> map;
-
-  EXPECT_FALSE(yin.error());
-  EXPECT_EQ(map.u64, 5000000000ULL);
-  EXPECT_EQ(map.u32, 4000000000U);
-  EXPECT_EQ(map.u16, 65000);
-  EXPECT_EQ(map.s64, -5000000000LL);
-  EXPECT_EQ(map.s32, -2000000000L);
-  EXPECT_EQ(map.s16, -32000);
-  EXPECT_EQ(map.f, 3.25f);
-  EXPECT_EQ(map.d, -2.8625);
-}
-
-//
-// Test writing then reading back all endian-aware scalar types
-//
-TEST(YAMLIO, TestReadWriteEndianTypes) {
-  std::string intermediate;
-  {
-    EndianTypes map;
-    map.u64 = 6000000000ULL;
-    map.u32 = 3000000000U;
-    map.u16 = 50000;
-    map.s64 = -6000000000LL;
-    map.s32 = -2000000000;
-    map.s16 = -32000;
-    map.f = 3.25f;
-    map.d = -2.8625;
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << map;
-  }
-
-  {
-    Input yin(intermediate);
-    EndianTypes map;
-    yin >> map;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(map.u64, 6000000000ULL);
-    EXPECT_EQ(map.u32, 3000000000U);
-    EXPECT_EQ(map.u16, 50000);
-    EXPECT_EQ(map.s64, -6000000000LL);
-    EXPECT_EQ(map.s32, -2000000000L);
-    EXPECT_EQ(map.s16, -32000);
-    EXPECT_EQ(map.f, 3.25f);
-    EXPECT_EQ(map.d, -2.8625);
-  }
-}
-
-struct StringTypes {
-  llvm::StringRef str1;
-  llvm::StringRef str2;
-  llvm::StringRef str3;
-  llvm::StringRef str4;
-  llvm::StringRef str5;
-  llvm::StringRef str6;
-  llvm::StringRef str7;
-  llvm::StringRef str8;
-  llvm::StringRef str9;
-  llvm::StringRef str10;
-  llvm::StringRef str11;
-  std::string stdstr1;
-  std::string stdstr2;
-  std::string stdstr3;
-  std::string stdstr4;
-  std::string stdstr5;
-  std::string stdstr6;
-  std::string stdstr7;
-  std::string stdstr8;
-  std::string stdstr9;
-  std::string stdstr10;
-  std::string stdstr11;
-  std::string stdstr12;
-};
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<StringTypes> {
-    static void mapping(IO &io, StringTypes& st) {
-      io.mapRequired("str1",      st.str1);
-      io.mapRequired("str2",      st.str2);
-      io.mapRequired("str3",      st.str3);
-      io.mapRequired("str4",      st.str4);
-      io.mapRequired("str5",      st.str5);
-      io.mapRequired("str6",      st.str6);
-      io.mapRequired("str7",      st.str7);
-      io.mapRequired("str8",      st.str8);
-      io.mapRequired("str9",      st.str9);
-      io.mapRequired("str10",     st.str10);
-      io.mapRequired("str11",     st.str11);
-      io.mapRequired("stdstr1",   st.stdstr1);
-      io.mapRequired("stdstr2",   st.stdstr2);
-      io.mapRequired("stdstr3",   st.stdstr3);
-      io.mapRequired("stdstr4",   st.stdstr4);
-      io.mapRequired("stdstr5",   st.stdstr5);
-      io.mapRequired("stdstr6",   st.stdstr6);
-      io.mapRequired("stdstr7",   st.stdstr7);
-      io.mapRequired("stdstr8",   st.stdstr8);
-      io.mapRequired("stdstr9",   st.stdstr9);
-      io.mapRequired("stdstr10",  st.stdstr10);
-      io.mapRequired("stdstr11",  st.stdstr11);
-      io.mapRequired("stdstr12",  st.stdstr12);
-    }
-  };
-}
-}
-
-TEST(YAMLIO, TestReadWriteStringTypes) {
-  std::string intermediate;
-  {
-    StringTypes map;
-    map.str1 = "'aaa";
-    map.str2 = "\"bbb";
-    map.str3 = "`ccc";
-    map.str4 = "@ddd";
-    map.str5 = "";
-    map.str6 = "0000000004000000";
-    map.str7 = "true";
-    map.str8 = "FALSE";
-    map.str9 = "~";
-    map.str10 = "0.2e20";
-    map.str11 = "0x30";
-    map.stdstr1 = "'eee";
-    map.stdstr2 = "\"fff";
-    map.stdstr3 = "`ggg";
-    map.stdstr4 = "@hhh";
-    map.stdstr5 = "";
-    map.stdstr6 = "0000000004000000";
-    map.stdstr7 = "true";
-    map.stdstr8 = "FALSE";
-    map.stdstr9 = "~";
-    map.stdstr10 = "0.2e20";
-    map.stdstr11 = "0x30";
-    map.stdstr12 = "- match";
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << map;
-  }
-
-  llvm::StringRef flowOut(intermediate);
-  EXPECT_NE(llvm::StringRef::npos, flowOut.find("'''aaa"));
-  EXPECT_NE(llvm::StringRef::npos, flowOut.find("'\"bbb'"));
-  EXPECT_NE(llvm::StringRef::npos, flowOut.find("'`ccc'"));
-  EXPECT_NE(llvm::StringRef::npos, flowOut.find("'@ddd'"));
-  EXPECT_NE(llvm::StringRef::npos, flowOut.find("''\n"));
-  EXPECT_NE(llvm::StringRef::npos, flowOut.find("'0000000004000000'\n"));
-  EXPECT_NE(llvm::StringRef::npos, flowOut.find("'true'\n"));
-  EXPECT_NE(llvm::StringRef::npos, flowOut.find("'FALSE'\n"));
-  EXPECT_NE(llvm::StringRef::npos, flowOut.find("'~'\n"));
-  EXPECT_NE(llvm::StringRef::npos, flowOut.find("'0.2e20'\n"));
-  EXPECT_NE(llvm::StringRef::npos, flowOut.find("'0x30'\n"));
-  EXPECT_NE(llvm::StringRef::npos, flowOut.find("'- match'\n"));
-  EXPECT_NE(std::string::npos, flowOut.find("'''eee"));
-  EXPECT_NE(std::string::npos, flowOut.find("'\"fff'"));
-  EXPECT_NE(std::string::npos, flowOut.find("'`ggg'"));
-  EXPECT_NE(std::string::npos, flowOut.find("'@hhh'"));
-  EXPECT_NE(std::string::npos, flowOut.find("''\n"));
-  EXPECT_NE(std::string::npos, flowOut.find("'0000000004000000'\n"));
-
-  {
-    Input yin(intermediate);
-    StringTypes map;
-    yin >> map;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_TRUE(map.str1.equals("'aaa"));
-    EXPECT_TRUE(map.str2.equals("\"bbb"));
-    EXPECT_TRUE(map.str3.equals("`ccc"));
-    EXPECT_TRUE(map.str4.equals("@ddd"));
-    EXPECT_TRUE(map.str5.equals(""));
-    EXPECT_TRUE(map.str6.equals("0000000004000000"));
-    EXPECT_TRUE(map.stdstr1 == "'eee");
-    EXPECT_TRUE(map.stdstr2 == "\"fff");
-    EXPECT_TRUE(map.stdstr3 == "`ggg");
-    EXPECT_TRUE(map.stdstr4 == "@hhh");
-    EXPECT_TRUE(map.stdstr5 == "");
-    EXPECT_TRUE(map.stdstr6 == "0000000004000000");
-  }
-}
-
-//===----------------------------------------------------------------------===//
-//  Test ScalarEnumerationTraits
-//===----------------------------------------------------------------------===//
-
-enum Colors {
-    cRed,
-    cBlue,
-    cGreen,
-    cYellow
-};
-
-struct ColorMap {
-  Colors      c1;
-  Colors      c2;
-  Colors      c3;
-  Colors      c4;
-  Colors      c5;
-  Colors      c6;
-};
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct ScalarEnumerationTraits<Colors> {
-    static void enumeration(IO &io, Colors &value) {
-      io.enumCase(value, "red",   cRed);
-      io.enumCase(value, "blue",  cBlue);
-      io.enumCase(value, "green", cGreen);
-      io.enumCase(value, "yellow",cYellow);
-    }
-  };
-  template <>
-  struct MappingTraits<ColorMap> {
-    static void mapping(IO &io, ColorMap& c) {
-      io.mapRequired("c1", c.c1);
-      io.mapRequired("c2", c.c2);
-      io.mapRequired("c3", c.c3);
-      io.mapOptional("c4", c.c4, cBlue);   // supplies default
-      io.mapOptional("c5", c.c5, cYellow); // supplies default
-      io.mapOptional("c6", c.c6, cRed);    // supplies default
-    }
-  };
-}
-}
-
-
-//
-// Test reading enumerated scalars
-//
-TEST(YAMLIO, TestEnumRead) {
-  ColorMap map;
-  Input yin("---\n"
-            "c1:  blue\n"
-            "c2:  red\n"
-            "c3:  green\n"
-            "c5:  yellow\n"
-            "...\n");
-  yin >> map;
-
-  EXPECT_FALSE(yin.error());
-  EXPECT_EQ(cBlue,  map.c1);
-  EXPECT_EQ(cRed,   map.c2);
-  EXPECT_EQ(cGreen, map.c3);
-  EXPECT_EQ(cBlue,  map.c4);  // tests default
-  EXPECT_EQ(cYellow,map.c5);  // tests overridden
-  EXPECT_EQ(cRed,   map.c6);  // tests default
-}
-
-
-
-//===----------------------------------------------------------------------===//
-//  Test ScalarBitSetTraits
-//===----------------------------------------------------------------------===//
-
-enum MyFlags {
-  flagNone    = 0,
-  flagBig     = 1 << 0,
-  flagFlat    = 1 << 1,
-  flagRound   = 1 << 2,
-  flagPointy  = 1 << 3
-};
-inline MyFlags operator|(MyFlags a, MyFlags b) {
-  return static_cast<MyFlags>(
-                      static_cast<uint32_t>(a) | static_cast<uint32_t>(b));
-}
-
-struct FlagsMap {
-  MyFlags     f1;
-  MyFlags     f2;
-  MyFlags     f3;
-  MyFlags     f4;
-};
-
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct ScalarBitSetTraits<MyFlags> {
-    static void bitset(IO &io, MyFlags &value) {
-      io.bitSetCase(value, "big",   flagBig);
-      io.bitSetCase(value, "flat",  flagFlat);
-      io.bitSetCase(value, "round", flagRound);
-      io.bitSetCase(value, "pointy",flagPointy);
-    }
-  };
-  template <>
-  struct MappingTraits<FlagsMap> {
-    static void mapping(IO &io, FlagsMap& c) {
-      io.mapRequired("f1", c.f1);
-      io.mapRequired("f2", c.f2);
-      io.mapRequired("f3", c.f3);
-      io.mapOptional("f4", c.f4, MyFlags(flagRound));
-     }
-  };
-}
-}
-
-
-//
-// Test reading flow sequence representing bit-mask values
-//
-TEST(YAMLIO, TestFlagsRead) {
-  FlagsMap map;
-  Input yin("---\n"
-            "f1:  [ big ]\n"
-            "f2:  [ round, flat ]\n"
-            "f3:  []\n"
-            "...\n");
-  yin >> map;
-
-  EXPECT_FALSE(yin.error());
-  EXPECT_EQ(flagBig,              map.f1);
-  EXPECT_EQ(flagRound|flagFlat,   map.f2);
-  EXPECT_EQ(flagNone,             map.f3);  // check empty set
-  EXPECT_EQ(flagRound,            map.f4);  // check optional key
-}
-
-
-//
-// Test writing then reading back bit-mask values
-//
-TEST(YAMLIO, TestReadWriteFlags) {
-  std::string intermediate;
-  {
-    FlagsMap map;
-    map.f1 = flagBig;
-    map.f2 = flagRound | flagFlat;
-    map.f3 = flagNone;
-    map.f4 = flagNone;
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << map;
-  }
-
-  {
-    Input yin(intermediate);
-    FlagsMap map2;
-    yin >> map2;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(flagBig,              map2.f1);
-    EXPECT_EQ(flagRound|flagFlat,   map2.f2);
-    EXPECT_EQ(flagNone,             map2.f3);
-    //EXPECT_EQ(flagRound,            map2.f4);  // check optional key
-  }
-}
-
-
-
-//===----------------------------------------------------------------------===//
-//  Test ScalarTraits
-//===----------------------------------------------------------------------===//
-
-struct MyCustomType {
-  int length;
-  int width;
-};
-
-struct MyCustomTypeMap {
-  MyCustomType     f1;
-  MyCustomType     f2;
-  int              f3;
-};
-
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<MyCustomTypeMap> {
-    static void mapping(IO &io, MyCustomTypeMap& s) {
-      io.mapRequired("f1", s.f1);
-      io.mapRequired("f2", s.f2);
-      io.mapRequired("f3", s.f3);
-     }
-  };
-  // MyCustomType is formatted as a yaml scalar.  A value of
-  // {length=3, width=4} would be represented in yaml as "3 by 4".
-  template<>
-  struct ScalarTraits<MyCustomType> {
-    static void output(const MyCustomType &value, void* ctxt, llvm::raw_ostream &out) {
-      out << llvm::format("%d by %d", value.length, value.width);
-    }
-    static StringRef input(StringRef scalar, void* ctxt, MyCustomType &value) {
-      size_t byStart = scalar.find("by");
-      if ( byStart != StringRef::npos ) {
-        StringRef lenStr = scalar.slice(0, byStart);
-        lenStr = lenStr.rtrim();
-        if ( lenStr.getAsInteger(0, value.length) ) {
-          return "malformed length";
-        }
-        StringRef widthStr = scalar.drop_front(byStart+2);
-        widthStr = widthStr.ltrim();
-        if ( widthStr.getAsInteger(0, value.width) ) {
-          return "malformed width";
-        }
-        return StringRef();
-      }
-      else {
-          return "malformed by";
-      }
-    }
-    static QuotingType mustQuote(StringRef) { return QuotingType::Single; }
-  };
-}
-}
-
-
-//
-// Test writing then reading back custom values
-//
-TEST(YAMLIO, TestReadWriteMyCustomType) {
-  std::string intermediate;
-  {
-    MyCustomTypeMap map;
-    map.f1.length = 1;
-    map.f1.width  = 4;
-    map.f2.length = 100;
-    map.f2.width  = 400;
-    map.f3 = 10;
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << map;
-  }
-
-  {
-    Input yin(intermediate);
-    MyCustomTypeMap map2;
-    yin >> map2;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(1,      map2.f1.length);
-    EXPECT_EQ(4,      map2.f1.width);
-    EXPECT_EQ(100,    map2.f2.length);
-    EXPECT_EQ(400,    map2.f2.width);
-    EXPECT_EQ(10,     map2.f3);
-  }
-}
-
-
-//===----------------------------------------------------------------------===//
-//  Test BlockScalarTraits
-//===----------------------------------------------------------------------===//
-
-struct MultilineStringType {
-  std::string str;
-};
-
-struct MultilineStringTypeMap {
-  MultilineStringType name;
-  MultilineStringType description;
-  MultilineStringType ingredients;
-  MultilineStringType recipes;
-  MultilineStringType warningLabels;
-  MultilineStringType documentation;
-  int price;
-};
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<MultilineStringTypeMap> {
-    static void mapping(IO &io, MultilineStringTypeMap& s) {
-      io.mapRequired("name", s.name);
-      io.mapRequired("description", s.description);
-      io.mapRequired("ingredients", s.ingredients);
-      io.mapRequired("recipes", s.recipes);
-      io.mapRequired("warningLabels", s.warningLabels);
-      io.mapRequired("documentation", s.documentation);
-      io.mapRequired("price", s.price);
-     }
-  };
-
-  // MultilineStringType is formatted as a yaml block literal scalar. A value of
-  // "Hello\nWorld" would be represented in yaml as
-  //  |
-  //    Hello
-  //    World
-  template <>
-  struct BlockScalarTraits<MultilineStringType> {
-    static void output(const MultilineStringType &value, void *ctxt,
-                       llvm::raw_ostream &out) {
-      out << value.str;
-    }
-    static StringRef input(StringRef scalar, void *ctxt,
-                           MultilineStringType &value) {
-      value.str = scalar.str();
-      return StringRef();
-    }
-  };
-}
-}
-
-LLVM_YAML_IS_DOCUMENT_LIST_VECTOR(MultilineStringType)
-
-//
-// Test writing then reading back custom values
-//
-TEST(YAMLIO, TestReadWriteMultilineStringType) {
-  std::string intermediate;
-  {
-    MultilineStringTypeMap map;
-    map.name.str = "An Item";
-    map.description.str = "Hello\nWorld";
-    map.ingredients.str = "SubItem 1\nSub Item 2\n\nSub Item 3\n";
-    map.recipes.str = "\n\nTest 1\n\n\n";
-    map.warningLabels.str = "";
-    map.documentation.str = "\n\n";
-    map.price = 350;
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << map;
-  }
-  {
-    Input yin(intermediate);
-    MultilineStringTypeMap map2;
-    yin >> map2;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(map2.name.str, "An Item\n");
-    EXPECT_EQ(map2.description.str, "Hello\nWorld\n");
-    EXPECT_EQ(map2.ingredients.str, "SubItem 1\nSub Item 2\n\nSub Item 3\n");
-    EXPECT_EQ(map2.recipes.str, "\n\nTest 1\n");
-    EXPECT_TRUE(map2.warningLabels.str.empty());
-    EXPECT_TRUE(map2.documentation.str.empty());
-    EXPECT_EQ(map2.price, 350);
-  }
-}
-
-//
-// Test writing then reading back custom values
-//
-TEST(YAMLIO, TestReadWriteBlockScalarDocuments) {
-  std::string intermediate;
-  {
-    std::vector<MultilineStringType> documents;
-    MultilineStringType doc;
-    doc.str = "Hello\nWorld";
-    documents.push_back(doc);
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << documents;
-
-    // Verify that the block scalar header was written out on the same line
-    // as the document marker.
-    EXPECT_NE(llvm::StringRef::npos, llvm::StringRef(ostr.str()).find("--- |"));
-  }
-  {
-    Input yin(intermediate);
-    std::vector<MultilineStringType> documents2;
-    yin >> documents2;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(documents2.size(), size_t(1));
-    EXPECT_EQ(documents2[0].str, "Hello\nWorld\n");
-  }
-}
-
-TEST(YAMLIO, TestReadWriteBlockScalarValue) {
-  std::string intermediate;
-  {
-    MultilineStringType doc;
-    doc.str = "Just a block\nscalar doc";
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << doc;
-  }
-  {
-    Input yin(intermediate);
-    MultilineStringType doc;
-    yin >> doc;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(doc.str, "Just a block\nscalar doc\n");
-  }
-}
-
-//===----------------------------------------------------------------------===//
-//  Test flow sequences
-//===----------------------------------------------------------------------===//
-
-LLVM_YAML_STRONG_TYPEDEF(int, MyNumber)
-LLVM_YAML_IS_FLOW_SEQUENCE_VECTOR(MyNumber)
-LLVM_YAML_STRONG_TYPEDEF(llvm::StringRef, MyString)
-LLVM_YAML_IS_FLOW_SEQUENCE_VECTOR(MyString)
-
-namespace llvm {
-namespace yaml {
-  template<>
-  struct ScalarTraits<MyNumber> {
-    static void output(const MyNumber &value, void *, llvm::raw_ostream &out) {
-      out << value;
-    }
-
-    static StringRef input(StringRef scalar, void *, MyNumber &value) {
-      long long n;
-      if ( getAsSignedInteger(scalar, 0, n) )
-        return "invalid number";
-      value = n;
-      return StringRef();
-    }
-
-    static QuotingType mustQuote(StringRef) { return QuotingType::None; }
-  };
-
-  template <> struct ScalarTraits<MyString> {
-    using Impl = ScalarTraits<StringRef>;
-    static void output(const MyString &V, void *Ctx, raw_ostream &OS) {
-      Impl::output(V, Ctx, OS);
-    }
-    static StringRef input(StringRef S, void *Ctx, MyString &V) {
-      return Impl::input(S, Ctx, V.value);
-    }
-    static QuotingType mustQuote(StringRef S) {
-      return Impl::mustQuote(S);
-    }
-  };
-}
-}
-
-struct NameAndNumbers {
-  llvm::StringRef               name;
-  std::vector<MyString>         strings;
-  std::vector<MyNumber>         single;
-  std::vector<MyNumber>         numbers;
-};
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<NameAndNumbers> {
-    static void mapping(IO &io, NameAndNumbers& nn) {
-      io.mapRequired("name",     nn.name);
-      io.mapRequired("strings",  nn.strings);
-      io.mapRequired("single",   nn.single);
-      io.mapRequired("numbers",  nn.numbers);
-    }
-  };
-}
-}
-
-typedef std::vector<MyNumber> MyNumberFlowSequence;
-
-LLVM_YAML_IS_SEQUENCE_VECTOR(MyNumberFlowSequence)
-
-struct NameAndNumbersFlow {
-  llvm::StringRef                    name;
-  std::vector<MyNumberFlowSequence>  sequenceOfNumbers;
-};
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<NameAndNumbersFlow> {
-    static void mapping(IO &io, NameAndNumbersFlow& nn) {
-      io.mapRequired("name",     nn.name);
-      io.mapRequired("sequenceOfNumbers",  nn.sequenceOfNumbers);
-    }
-  };
-}
-}
-
-//
-// Test writing then reading back custom values
-//
-TEST(YAMLIO, TestReadWriteMyFlowSequence) {
-  std::string intermediate;
-  {
-    NameAndNumbers map;
-    map.name  = "hello";
-    map.strings.push_back(llvm::StringRef("one"));
-    map.strings.push_back(llvm::StringRef("two"));
-    map.single.push_back(1);
-    map.numbers.push_back(10);
-    map.numbers.push_back(-30);
-    map.numbers.push_back(1024);
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << map;
-
-    // Verify sequences were written in flow style
-    ostr.flush();
-    llvm::StringRef flowOut(intermediate);
-    EXPECT_NE(llvm::StringRef::npos, flowOut.find("one, two"));
-    EXPECT_NE(llvm::StringRef::npos, flowOut.find("10, -30, 1024"));
-  }
-
-  {
-    Input yin(intermediate);
-    NameAndNumbers map2;
-    yin >> map2;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_TRUE(map2.name.equals("hello"));
-    EXPECT_EQ(map2.strings.size(), 2UL);
-    EXPECT_TRUE(map2.strings[0].value.equals("one"));
-    EXPECT_TRUE(map2.strings[1].value.equals("two"));
-    EXPECT_EQ(map2.single.size(), 1UL);
-    EXPECT_EQ(1,       map2.single[0]);
-    EXPECT_EQ(map2.numbers.size(), 3UL);
-    EXPECT_EQ(10,      map2.numbers[0]);
-    EXPECT_EQ(-30,     map2.numbers[1]);
-    EXPECT_EQ(1024,    map2.numbers[2]);
-  }
-}
-
-
-//
-// Test writing then reading back a sequence of flow sequences.
-//
-TEST(YAMLIO, TestReadWriteSequenceOfMyFlowSequence) {
-  std::string intermediate;
-  {
-    NameAndNumbersFlow map;
-    map.name  = "hello";
-    MyNumberFlowSequence single = { 0 };
-    MyNumberFlowSequence numbers = { 12, 1, -512 };
-    map.sequenceOfNumbers.push_back(single);
-    map.sequenceOfNumbers.push_back(numbers);
-    map.sequenceOfNumbers.push_back(MyNumberFlowSequence());
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << map;
-
-    // Verify sequences were written in flow style
-    // and that the parent sequence used '-'.
-    ostr.flush();
-    llvm::StringRef flowOut(intermediate);
-    EXPECT_NE(llvm::StringRef::npos, flowOut.find("- [ 0 ]"));
-    EXPECT_NE(llvm::StringRef::npos, flowOut.find("- [ 12, 1, -512 ]"));
-    EXPECT_NE(llvm::StringRef::npos, flowOut.find("- [  ]"));
-  }
-
-  {
-    Input yin(intermediate);
-    NameAndNumbersFlow map2;
-    yin >> map2;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_TRUE(map2.name.equals("hello"));
-    EXPECT_EQ(map2.sequenceOfNumbers.size(), 3UL);
-    EXPECT_EQ(map2.sequenceOfNumbers[0].size(), 1UL);
-    EXPECT_EQ(0,    map2.sequenceOfNumbers[0][0]);
-    EXPECT_EQ(map2.sequenceOfNumbers[1].size(), 3UL);
-    EXPECT_EQ(12,   map2.sequenceOfNumbers[1][0]);
-    EXPECT_EQ(1,    map2.sequenceOfNumbers[1][1]);
-    EXPECT_EQ(-512, map2.sequenceOfNumbers[1][2]);
-    EXPECT_TRUE(map2.sequenceOfNumbers[2].empty());
-  }
-}
-
-//===----------------------------------------------------------------------===//
-//  Test normalizing/denormalizing
-//===----------------------------------------------------------------------===//
-
-LLVM_YAML_STRONG_TYPEDEF(uint32_t, TotalSeconds)
-
-typedef std::vector<TotalSeconds> SecondsSequence;
-
-LLVM_YAML_IS_SEQUENCE_VECTOR(TotalSeconds)
-
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<TotalSeconds> {
-
-    class NormalizedSeconds {
-    public:
-      NormalizedSeconds(IO &io)
-        : hours(0), minutes(0), seconds(0) {
-      }
-      NormalizedSeconds(IO &, TotalSeconds &secs)
-        : hours(secs/3600),
-          minutes((secs - (hours*3600))/60),
-          seconds(secs % 60) {
-      }
-      TotalSeconds denormalize(IO &) {
-        return TotalSeconds(hours*3600 + minutes*60 + seconds);
-      }
-
-      uint32_t     hours;
-      uint8_t      minutes;
-      uint8_t      seconds;
-    };
-
-    static void mapping(IO &io, TotalSeconds &secs) {
-      MappingNormalization<NormalizedSeconds, TotalSeconds> keys(io, secs);
-
-      io.mapOptional("hours",    keys->hours,    (uint32_t)0);
-      io.mapOptional("minutes",  keys->minutes,  (uint8_t)0);
-      io.mapRequired("seconds",  keys->seconds);
-    }
-  };
-}
-}
-
-
-//
-// Test the reading of a yaml sequence of mappings
-//
-TEST(YAMLIO, TestReadMySecondsSequence) {
-  SecondsSequence seq;
-  Input yin("---\n - hours:  1\n   seconds:  5\n - seconds:  59\n...\n");
-  yin >> seq;
-
-  EXPECT_FALSE(yin.error());
-  EXPECT_EQ(seq.size(), 2UL);
-  EXPECT_EQ(seq[0], 3605U);
-  EXPECT_EQ(seq[1], 59U);
-}
-
-
-//
-// Test writing then reading back custom values
-//
-TEST(YAMLIO, TestReadWriteMySecondsSequence) {
-  std::string intermediate;
-  {
-    SecondsSequence seq;
-    seq.push_back(4000);
-    seq.push_back(500);
-    seq.push_back(59);
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << seq;
-  }
-  {
-    Input yin(intermediate);
-    SecondsSequence seq2;
-    yin >> seq2;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(seq2.size(), 3UL);
-    EXPECT_EQ(seq2[0], 4000U);
-    EXPECT_EQ(seq2[1], 500U);
-    EXPECT_EQ(seq2[2], 59U);
-  }
-}
-
-
-//===----------------------------------------------------------------------===//
-//  Test dynamic typing
-//===----------------------------------------------------------------------===//
-
-enum AFlags {
-    a1,
-    a2,
-    a3
-};
-
-enum BFlags {
-    b1,
-    b2,
-    b3
-};
-
-enum Kind {
-    kindA,
-    kindB
-};
-
-struct KindAndFlags {
-  KindAndFlags() : kind(kindA), flags(0) { }
-  KindAndFlags(Kind k, uint32_t f) : kind(k), flags(f) { }
-  Kind        kind;
-  uint32_t    flags;
-};
-
-typedef std::vector<KindAndFlags> KindAndFlagsSequence;
-
-LLVM_YAML_IS_SEQUENCE_VECTOR(KindAndFlags)
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct ScalarEnumerationTraits<AFlags> {
-    static void enumeration(IO &io, AFlags &value) {
-      io.enumCase(value, "a1",  a1);
-      io.enumCase(value, "a2",  a2);
-      io.enumCase(value, "a3",  a3);
-    }
-  };
-  template <>
-  struct ScalarEnumerationTraits<BFlags> {
-    static void enumeration(IO &io, BFlags &value) {
-      io.enumCase(value, "b1",  b1);
-      io.enumCase(value, "b2",  b2);
-      io.enumCase(value, "b3",  b3);
-    }
-  };
-  template <>
-  struct ScalarEnumerationTraits<Kind> {
-    static void enumeration(IO &io, Kind &value) {
-      io.enumCase(value, "A",  kindA);
-      io.enumCase(value, "B",  kindB);
-    }
-  };
-  template <>
-  struct MappingTraits<KindAndFlags> {
-    static void mapping(IO &io, KindAndFlags& kf) {
-      io.mapRequired("kind",  kf.kind);
-      // Type of "flags" field varies depending on "kind" field.
-      // Use memcpy here to avoid breaking strict aliasing rules.
-      if (kf.kind == kindA) {
-        AFlags aflags = static_cast<AFlags>(kf.flags);
-        io.mapRequired("flags", aflags);
-        kf.flags = aflags;
-      } else {
-        BFlags bflags = static_cast<BFlags>(kf.flags);
-        io.mapRequired("flags", bflags);
-        kf.flags = bflags;
-      }
-    }
-  };
-}
-}
-
-
-//
-// Test the reading of a yaml sequence dynamic types
-//
-TEST(YAMLIO, TestReadKindAndFlagsSequence) {
-  KindAndFlagsSequence seq;
-  Input yin("---\n - kind:  A\n   flags:  a2\n - kind:  B\n   flags:  b1\n...\n");
-  yin >> seq;
-
-  EXPECT_FALSE(yin.error());
-  EXPECT_EQ(seq.size(), 2UL);
-  EXPECT_EQ(seq[0].kind,  kindA);
-  EXPECT_EQ(seq[0].flags, (uint32_t)a2);
-  EXPECT_EQ(seq[1].kind,  kindB);
-  EXPECT_EQ(seq[1].flags, (uint32_t)b1);
-}
-
-//
-// Test writing then reading back dynamic types
-//
-TEST(YAMLIO, TestReadWriteKindAndFlagsSequence) {
-  std::string intermediate;
-  {
-    KindAndFlagsSequence seq;
-    seq.push_back(KindAndFlags(kindA,a1));
-    seq.push_back(KindAndFlags(kindB,b1));
-    seq.push_back(KindAndFlags(kindA,a2));
-    seq.push_back(KindAndFlags(kindB,b2));
-    seq.push_back(KindAndFlags(kindA,a3));
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << seq;
-  }
-  {
-    Input yin(intermediate);
-    KindAndFlagsSequence seq2;
-    yin >> seq2;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(seq2.size(), 5UL);
-    EXPECT_EQ(seq2[0].kind,  kindA);
-    EXPECT_EQ(seq2[0].flags, (uint32_t)a1);
-    EXPECT_EQ(seq2[1].kind,  kindB);
-    EXPECT_EQ(seq2[1].flags, (uint32_t)b1);
-    EXPECT_EQ(seq2[2].kind,  kindA);
-    EXPECT_EQ(seq2[2].flags, (uint32_t)a2);
-    EXPECT_EQ(seq2[3].kind,  kindB);
-    EXPECT_EQ(seq2[3].flags, (uint32_t)b2);
-    EXPECT_EQ(seq2[4].kind,  kindA);
-    EXPECT_EQ(seq2[4].flags, (uint32_t)a3);
-  }
-}
-
-
-//===----------------------------------------------------------------------===//
-//  Test document list
-//===----------------------------------------------------------------------===//
-
-struct FooBarMap {
-  int foo;
-  int bar;
-};
-typedef std::vector<FooBarMap> FooBarMapDocumentList;
-
-LLVM_YAML_IS_DOCUMENT_LIST_VECTOR(FooBarMap)
-
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<FooBarMap> {
-    static void mapping(IO &io, FooBarMap& fb) {
-      io.mapRequired("foo",    fb.foo);
-      io.mapRequired("bar",    fb.bar);
-    }
-  };
-}
-}
-
-
-//
-// Test the reading of a yaml mapping
-//
-TEST(YAMLIO, TestDocRead) {
-  FooBarMap doc;
-  Input yin("---\nfoo:  3\nbar:  5\n...\n");
-  yin >> doc;
-
-  EXPECT_FALSE(yin.error());
-  EXPECT_EQ(doc.foo, 3);
-  EXPECT_EQ(doc.bar,5);
-}
-
-
-
-//
-// Test writing then reading back a sequence of mappings
-//
-TEST(YAMLIO, TestSequenceDocListWriteAndRead) {
-  std::string intermediate;
-  {
-    FooBarMap doc1;
-    doc1.foo = 10;
-    doc1.bar = -3;
-    FooBarMap doc2;
-    doc2.foo = 257;
-    doc2.bar = 0;
-    std::vector<FooBarMap> docList;
-    docList.push_back(doc1);
-    docList.push_back(doc2);
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << docList;
-  }
-
-
-  {
-    Input yin(intermediate);
-    std::vector<FooBarMap> docList2;
-    yin >> docList2;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(docList2.size(), 2UL);
-    FooBarMap& map1 = docList2[0];
-    FooBarMap& map2 = docList2[1];
-    EXPECT_EQ(map1.foo, 10);
-    EXPECT_EQ(map1.bar, -3);
-    EXPECT_EQ(map2.foo, 257);
-    EXPECT_EQ(map2.bar, 0);
-  }
-}
-
-//===----------------------------------------------------------------------===//
-//  Test document tags
-//===----------------------------------------------------------------------===//
-
-struct MyDouble {
-  MyDouble() : value(0.0) { }
-  MyDouble(double x) : value(x) { }
-  double value;
-};
-
-LLVM_YAML_IS_DOCUMENT_LIST_VECTOR(MyDouble)
-
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<MyDouble> {
-    static void mapping(IO &io, MyDouble &d) {
-      if (io.mapTag("!decimal", true)) {
-        mappingDecimal(io, d);
-      } else if (io.mapTag("!fraction")) {
-        mappingFraction(io, d);
-      }
-    }
-    static void mappingDecimal(IO &io, MyDouble &d) {
-      io.mapRequired("value", d.value);
-    }
-    static void mappingFraction(IO &io, MyDouble &d) {
-        double num, denom;
-        io.mapRequired("numerator",      num);
-        io.mapRequired("denominator",    denom);
-        // convert fraction to double
-        d.value = num/denom;
-    }
-  };
- }
-}
-
-
-//
-// Test the reading of two different tagged yaml documents.
-//
-TEST(YAMLIO, TestTaggedDocuments) {
-  std::vector<MyDouble> docList;
-  Input yin("--- !decimal\nvalue:  3.0\n"
-            "--- !fraction\nnumerator:  9.0\ndenominator:  2\n...\n");
-  yin >> docList;
-  EXPECT_FALSE(yin.error());
-  EXPECT_EQ(docList.size(), 2UL);
-  EXPECT_EQ(docList[0].value, 3.0);
-  EXPECT_EQ(docList[1].value, 4.5);
-}
-
-
-
-//
-// Test writing then reading back tagged documents
-//
-TEST(YAMLIO, TestTaggedDocumentsWriteAndRead) {
-  std::string intermediate;
-  {
-    MyDouble a(10.25);
-    MyDouble b(-3.75);
-    std::vector<MyDouble> docList;
-    docList.push_back(a);
-    docList.push_back(b);
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << docList;
-  }
-
-  {
-    Input yin(intermediate);
-    std::vector<MyDouble> docList2;
-    yin >> docList2;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(docList2.size(), 2UL);
-    EXPECT_EQ(docList2[0].value, 10.25);
-    EXPECT_EQ(docList2[1].value, -3.75);
-  }
-}
-
-
-//===----------------------------------------------------------------------===//
-//  Test mapping validation
-//===----------------------------------------------------------------------===//
-
-struct MyValidation {
-  double value;
-};
-
-LLVM_YAML_IS_DOCUMENT_LIST_VECTOR(MyValidation)
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<MyValidation> {
-    static void mapping(IO &io, MyValidation &d) {
-        io.mapRequired("value", d.value);
-    }
-    static StringRef validate(IO &io, MyValidation &d) {
-        if (d.value < 0)
-          return "negative value";
-        return StringRef();
-    }
-  };
- }
-}
-
-
-//
-// Test that validate() is called and complains about the negative value.
-//
-TEST(YAMLIO, TestValidatingInput) {
-  std::vector<MyValidation> docList;
-  Input yin("--- \nvalue:  3.0\n"
-            "--- \nvalue:  -1.0\n...\n",
-            nullptr, suppressErrorMessages);
-  yin >> docList;
-  EXPECT_TRUE(!!yin.error());
-}
-
-//===----------------------------------------------------------------------===//
-//  Test flow mapping
-//===----------------------------------------------------------------------===//
-
-struct FlowFooBar {
-  int foo;
-  int bar;
-
-  FlowFooBar() : foo(0), bar(0) {}
-  FlowFooBar(int foo, int bar) : foo(foo), bar(bar) {}
-};
-
-typedef std::vector<FlowFooBar> FlowFooBarSequence;
-
-LLVM_YAML_IS_SEQUENCE_VECTOR(FlowFooBar)
-
-struct FlowFooBarDoc {
-  FlowFooBar attribute;
-  FlowFooBarSequence seq;
-};
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<FlowFooBar> {
-    static void mapping(IO &io, FlowFooBar &fb) {
-      io.mapRequired("foo", fb.foo);
-      io.mapRequired("bar", fb.bar);
-    }
-
-    static const bool flow = true;
-  };
-
-  template <>
-  struct MappingTraits<FlowFooBarDoc> {
-    static void mapping(IO &io, FlowFooBarDoc &fb) {
-      io.mapRequired("attribute", fb.attribute);
-      io.mapRequired("seq", fb.seq);
-    }
-  };
-}
-}
-
-//
-// Test writing then reading back custom mappings
-//
-TEST(YAMLIO, TestReadWriteMyFlowMapping) {
-  std::string intermediate;
-  {
-    FlowFooBarDoc doc;
-    doc.attribute = FlowFooBar(42, 907);
-    doc.seq.push_back(FlowFooBar(1, 2));
-    doc.seq.push_back(FlowFooBar(0, 0));
-    doc.seq.push_back(FlowFooBar(-1, 1024));
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << doc;
-
-    // Verify that mappings were written in flow style
-    ostr.flush();
-    llvm::StringRef flowOut(intermediate);
-    EXPECT_NE(llvm::StringRef::npos, flowOut.find("{ foo: 42, bar: 907 }"));
-    EXPECT_NE(llvm::StringRef::npos, flowOut.find("- { foo: 1, bar: 2 }"));
-    EXPECT_NE(llvm::StringRef::npos, flowOut.find("- { foo: 0, bar: 0 }"));
-    EXPECT_NE(llvm::StringRef::npos, flowOut.find("- { foo: -1, bar: 1024 }"));
-  }
-
-  {
-    Input yin(intermediate);
-    FlowFooBarDoc doc2;
-    yin >> doc2;
-
-    EXPECT_FALSE(yin.error());
-    EXPECT_EQ(doc2.attribute.foo, 42);
-    EXPECT_EQ(doc2.attribute.bar, 907);
-    EXPECT_EQ(doc2.seq.size(), 3UL);
-    EXPECT_EQ(doc2.seq[0].foo, 1);
-    EXPECT_EQ(doc2.seq[0].bar, 2);
-    EXPECT_EQ(doc2.seq[1].foo, 0);
-    EXPECT_EQ(doc2.seq[1].bar, 0);
-    EXPECT_EQ(doc2.seq[2].foo, -1);
-    EXPECT_EQ(doc2.seq[2].bar, 1024);
-  }
-}
-
-//===----------------------------------------------------------------------===//
-//  Test error handling
-//===----------------------------------------------------------------------===//
-
-//
-// Test error handling of unknown enumerated scalar
-//
-TEST(YAMLIO, TestColorsReadError) {
-  ColorMap map;
-  Input yin("---\n"
-            "c1:  blue\n"
-            "c2:  purple\n"
-            "c3:  green\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> map;
-  EXPECT_TRUE(!!yin.error());
-}
-
-
-//
-// Test error handling of flow sequence with unknown value
-//
-TEST(YAMLIO, TestFlagsReadError) {
-  FlagsMap map;
-  Input yin("---\n"
-            "f1:  [ big ]\n"
-            "f2:  [ round, hollow ]\n"
-            "f3:  []\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> map;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-
-//
-// Test error handling reading built-in uint8_t type
-//
-TEST(YAMLIO, TestReadBuiltInTypesUint8Error) {
-  std::vector<uint8_t> seq;
-  Input yin("---\n"
-            "- 255\n"
-            "- 0\n"
-            "- 257\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-
-//
-// Test error handling reading built-in uint16_t type
-//
-TEST(YAMLIO, TestReadBuiltInTypesUint16Error) {
-  std::vector<uint16_t> seq;
-  Input yin("---\n"
-            "- 65535\n"
-            "- 0\n"
-            "- 66000\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-
-//
-// Test error handling reading built-in uint32_t type
-//
-TEST(YAMLIO, TestReadBuiltInTypesUint32Error) {
-  std::vector<uint32_t> seq;
-  Input yin("---\n"
-            "- 4000000000\n"
-            "- 0\n"
-            "- 5000000000\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-
-//
-// Test error handling reading built-in uint64_t type
-//
-TEST(YAMLIO, TestReadBuiltInTypesUint64Error) {
-  std::vector<uint64_t> seq;
-  Input yin("---\n"
-            "- 18446744073709551615\n"
-            "- 0\n"
-            "- 19446744073709551615\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-
-//
-// Test error handling reading built-in int8_t type
-//
-TEST(YAMLIO, TestReadBuiltInTypesint8OverError) {
-  std::vector<int8_t> seq;
-  Input yin("---\n"
-            "- -128\n"
-            "- 0\n"
-            "- 127\n"
-            "- 128\n"
-           "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-//
-// Test error handling reading built-in int8_t type
-//
-TEST(YAMLIO, TestReadBuiltInTypesint8UnderError) {
-  std::vector<int8_t> seq;
-  Input yin("---\n"
-            "- -128\n"
-            "- 0\n"
-            "- 127\n"
-            "- -129\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-
-//
-// Test error handling reading built-in int16_t type
-//
-TEST(YAMLIO, TestReadBuiltInTypesint16UnderError) {
-  std::vector<int16_t> seq;
-  Input yin("---\n"
-            "- 32767\n"
-            "- 0\n"
-            "- -32768\n"
-            "- -32769\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-
-//
-// Test error handling reading built-in int16_t type
-//
-TEST(YAMLIO, TestReadBuiltInTypesint16OverError) {
-  std::vector<int16_t> seq;
-  Input yin("---\n"
-            "- 32767\n"
-            "- 0\n"
-            "- -32768\n"
-            "- 32768\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-
-//
-// Test error handling reading built-in int32_t type
-//
-TEST(YAMLIO, TestReadBuiltInTypesint32UnderError) {
-  std::vector<int32_t> seq;
-  Input yin("---\n"
-            "- 2147483647\n"
-            "- 0\n"
-            "- -2147483648\n"
-            "- -2147483649\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-//
-// Test error handling reading built-in int32_t type
-//
-TEST(YAMLIO, TestReadBuiltInTypesint32OverError) {
-  std::vector<int32_t> seq;
-  Input yin("---\n"
-            "- 2147483647\n"
-            "- 0\n"
-            "- -2147483648\n"
-            "- 2147483649\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-
-//
-// Test error handling reading built-in int64_t type
-//
-TEST(YAMLIO, TestReadBuiltInTypesint64UnderError) {
-  std::vector<int64_t> seq;
-  Input yin("---\n"
-            "- -9223372036854775808\n"
-            "- 0\n"
-            "- 9223372036854775807\n"
-            "- -9223372036854775809\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-//
-// Test error handling reading built-in int64_t type
-//
-TEST(YAMLIO, TestReadBuiltInTypesint64OverError) {
-  std::vector<int64_t> seq;
-  Input yin("---\n"
-            "- -9223372036854775808\n"
-            "- 0\n"
-            "- 9223372036854775807\n"
-            "- 9223372036854775809\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-//
-// Test error handling reading built-in float type
-//
-TEST(YAMLIO, TestReadBuiltInTypesFloatError) {
-  std::vector<float> seq;
-  Input yin("---\n"
-            "- 0.0\n"
-            "- 1000.1\n"
-            "- -123.456\n"
-            "- 1.2.3\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-//
-// Test error handling reading built-in float type
-//
-TEST(YAMLIO, TestReadBuiltInTypesDoubleError) {
-  std::vector<double> seq;
-  Input yin("---\n"
-            "- 0.0\n"
-            "- 1000.1\n"
-            "- -123.456\n"
-            "- 1.2.3\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-//
-// Test error handling reading built-in Hex8 type
-//
-LLVM_YAML_IS_SEQUENCE_VECTOR(Hex8)
-TEST(YAMLIO, TestReadBuiltInTypesHex8Error) {
-  std::vector<Hex8> seq;
-  Input yin("---\n"
-            "- 0x12\n"
-            "- 0xFE\n"
-            "- 0x123\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-
-//
-// Test error handling reading built-in Hex16 type
-//
-LLVM_YAML_IS_SEQUENCE_VECTOR(Hex16)
-TEST(YAMLIO, TestReadBuiltInTypesHex16Error) {
-  std::vector<Hex16> seq;
-  Input yin("---\n"
-            "- 0x0012\n"
-            "- 0xFEFF\n"
-            "- 0x12345\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-//
-// Test error handling reading built-in Hex32 type
-//
-LLVM_YAML_IS_SEQUENCE_VECTOR(Hex32)
-TEST(YAMLIO, TestReadBuiltInTypesHex32Error) {
-  std::vector<Hex32> seq;
-  Input yin("---\n"
-            "- 0x0012\n"
-            "- 0xFEFF0000\n"
-            "- 0x1234556789\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-//
-// Test error handling reading built-in Hex64 type
-//
-LLVM_YAML_IS_SEQUENCE_VECTOR(Hex64)
-TEST(YAMLIO, TestReadBuiltInTypesHex64Error) {
-  std::vector<Hex64> seq;
-  Input yin("---\n"
-            "- 0x0012\n"
-            "- 0xFFEEDDCCBBAA9988\n"
-            "- 0x12345567890ABCDEF0\n"
-            "...\n",
-            /*Ctxt=*/nullptr,
-            suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_TRUE(!!yin.error());
-}
-
-TEST(YAMLIO, TestMalformedMapFailsGracefully) {
-  FooBar doc;
-  {
-    // We pass the suppressErrorMessages handler to handle the error
-    // message generated in the constructor of Input.
-    Input yin("{foo:3, bar: 5}", /*Ctxt=*/nullptr, suppressErrorMessages);
-    yin >> doc;
-    EXPECT_TRUE(!!yin.error());
-  }
-
-  {
-    Input yin("---\nfoo:3\nbar: 5\n...\n", /*Ctxt=*/nullptr, suppressErrorMessages);
-    yin >> doc;
-    EXPECT_TRUE(!!yin.error());
-  }
-}
-
-struct OptionalTest {
-  std::vector<int> Numbers;
-};
-
-struct OptionalTestSeq {
-  std::vector<OptionalTest> Tests;
-};
-
-LLVM_YAML_IS_SEQUENCE_VECTOR(OptionalTest)
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<OptionalTest> {
-    static void mapping(IO& IO, OptionalTest &OT) {
-      IO.mapOptional("Numbers", OT.Numbers);
-    }
-  };
-
-  template <>
-  struct MappingTraits<OptionalTestSeq> {
-    static void mapping(IO &IO, OptionalTestSeq &OTS) {
-      IO.mapOptional("Tests", OTS.Tests);
-    }
-  };
-}
-}
-
-TEST(YAMLIO, SequenceElideTest) {
-  // Test that writing out a purely optional structure with its fields set to
-  // default followed by other data is properly read back in.
-  OptionalTestSeq Seq;
-  OptionalTest One, Two, Three, Four;
-  int N[] = {1, 2, 3};
-  Three.Numbers.assign(N, N + 3);
-  Seq.Tests.push_back(One);
-  Seq.Tests.push_back(Two);
-  Seq.Tests.push_back(Three);
-  Seq.Tests.push_back(Four);
-
-  std::string intermediate;
-  {
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << Seq;
-  }
-
-  Input yin(intermediate);
-  OptionalTestSeq Seq2;
-  yin >> Seq2;
-
-  EXPECT_FALSE(yin.error());
-
-  EXPECT_EQ(4UL, Seq2.Tests.size());
-
-  EXPECT_TRUE(Seq2.Tests[0].Numbers.empty());
-  EXPECT_TRUE(Seq2.Tests[1].Numbers.empty());
-
-  EXPECT_EQ(1, Seq2.Tests[2].Numbers[0]);
-  EXPECT_EQ(2, Seq2.Tests[2].Numbers[1]);
-  EXPECT_EQ(3, Seq2.Tests[2].Numbers[2]);
-
-  EXPECT_TRUE(Seq2.Tests[3].Numbers.empty());
-}
-
-TEST(YAMLIO, TestEmptyStringFailsForMapWithRequiredFields) {
-  FooBar doc;
-  Input yin("");
-  yin >> doc;
-  EXPECT_TRUE(!!yin.error());
-}
-
-TEST(YAMLIO, TestEmptyStringSucceedsForMapWithOptionalFields) {
-  OptionalTest doc;
-  Input yin("");
-  yin >> doc;
-  EXPECT_FALSE(yin.error());
-}
-
-TEST(YAMLIO, TestEmptyStringSucceedsForSequence) {
-  std::vector<uint8_t> seq;
-  Input yin("", /*Ctxt=*/nullptr, suppressErrorMessages);
-  yin >> seq;
-
-  EXPECT_FALSE(yin.error());
-  EXPECT_TRUE(seq.empty());
-}
-
-struct FlowMap {
-  llvm::StringRef str1, str2, str3;
-  FlowMap(llvm::StringRef str1, llvm::StringRef str2, llvm::StringRef str3)
-    : str1(str1), str2(str2), str3(str3) {}
-};
-
-struct FlowSeq {
-  llvm::StringRef str;
-  FlowSeq(llvm::StringRef S) : str(S) {}
-  FlowSeq() = default;
-};
-
-namespace llvm {
-namespace yaml {
-  template <>
-  struct MappingTraits<FlowMap> {
-    static void mapping(IO &io, FlowMap &fm) {
-      io.mapRequired("str1", fm.str1);
-      io.mapRequired("str2", fm.str2);
-      io.mapRequired("str3", fm.str3);
-    }
-
-    static const bool flow = true;
-  };
-
-template <>
-struct ScalarTraits<FlowSeq> {
-  static void output(const FlowSeq &value, void*, llvm::raw_ostream &out) {
-    out << value.str;
-  }
-  static StringRef input(StringRef scalar, void*, FlowSeq &value) {
-    value.str = scalar;
-    return "";
-  }
-
-  static QuotingType mustQuote(StringRef S) { return QuotingType::None; }
-};
-}
-}
-
-LLVM_YAML_IS_FLOW_SEQUENCE_VECTOR(FlowSeq)
-
-TEST(YAMLIO, TestWrapFlow) {
-  std::string out;
-  llvm::raw_string_ostream ostr(out);
-  FlowMap Map("This is str1", "This is str2", "This is str3");
-  std::vector<FlowSeq> Seq;
-  Seq.emplace_back("This is str1");
-  Seq.emplace_back("This is str2");
-  Seq.emplace_back("This is str3");
-
-  {
-    // 20 is just bellow the total length of the first mapping field.
-    // We should wreap at every element.
-    Output yout(ostr, nullptr, 15);
-
-    yout << Map;
-    ostr.flush();
-    EXPECT_EQ(out,
-              "---\n"
-              "{ str1: This is str1, \n"
-              "  str2: This is str2, \n"
-              "  str3: This is str3 }\n"
-              "...\n");
-    out.clear();
-
-    yout << Seq;
-    ostr.flush();
-    EXPECT_EQ(out,
-              "---\n"
-              "[ This is str1, \n"
-              "  This is str2, \n"
-              "  This is str3 ]\n"
-              "...\n");
-    out.clear();
-  }
-  {
-    // 25 will allow the second field to be output on the first line.
-    Output yout(ostr, nullptr, 25);
-
-    yout << Map;
-    ostr.flush();
-    EXPECT_EQ(out,
-              "---\n"
-              "{ str1: This is str1, str2: This is str2, \n"
-              "  str3: This is str3 }\n"
-              "...\n");
-    out.clear();
-
-    yout << Seq;
-    ostr.flush();
-    EXPECT_EQ(out,
-              "---\n"
-              "[ This is str1, This is str2, \n"
-              "  This is str3 ]\n"
-              "...\n");
-    out.clear();
-  }
-  {
-    // 0 means no wrapping.
-    Output yout(ostr, nullptr, 0);
-
-    yout << Map;
-    ostr.flush();
-    EXPECT_EQ(out,
-              "---\n"
-              "{ str1: This is str1, str2: This is str2, str3: This is str3 }\n"
-              "...\n");
-    out.clear();
-
-    yout << Seq;
-    ostr.flush();
-    EXPECT_EQ(out,
-              "---\n"
-              "[ This is str1, This is str2, This is str3 ]\n"
-              "...\n");
-    out.clear();
-  }
-}
-
-struct MappingContext {
-  int A = 0;
-};
-struct SimpleMap {
-  int B = 0;
-  int C = 0;
-};
-
-struct NestedMap {
-  NestedMap(MappingContext &Context) : Context(Context) {}
-  SimpleMap Simple;
-  MappingContext &Context;
-};
-
-namespace llvm {
-namespace yaml {
-template <> struct MappingContextTraits<SimpleMap, MappingContext> {
-  static void mapping(IO &io, SimpleMap &sm, MappingContext &Context) {
-    io.mapRequired("B", sm.B);
-    io.mapRequired("C", sm.C);
-    ++Context.A;
-    io.mapRequired("Context", Context.A);
-  }
-};
-
-template <> struct MappingTraits<NestedMap> {
-  static void mapping(IO &io, NestedMap &nm) {
-    io.mapRequired("Simple", nm.Simple, nm.Context);
-  }
-};
-}
-}
-
-TEST(YAMLIO, TestMapWithContext) {
-  MappingContext Context;
-  NestedMap Nested(Context);
-  std::string out;
-  llvm::raw_string_ostream ostr(out);
-
-  Output yout(ostr, nullptr, 15);
-
-  yout << Nested;
-  ostr.flush();
-  EXPECT_EQ(1, Context.A);
-  EXPECT_EQ("---\n"
-            "Simple:          \n"
-            "  B:               0\n"
-            "  C:               0\n"
-            "  Context:         1\n"
-            "...\n",
-            out);
-
-  out.clear();
-
-  Nested.Simple.B = 2;
-  Nested.Simple.C = 3;
-  yout << Nested;
-  ostr.flush();
-  EXPECT_EQ(2, Context.A);
-  EXPECT_EQ("---\n"
-            "Simple:          \n"
-            "  B:               2\n"
-            "  C:               3\n"
-            "  Context:         2\n"
-            "...\n",
-            out);
-  out.clear();
-}
-
-LLVM_YAML_IS_STRING_MAP(int)
-
-TEST(YAMLIO, TestCustomMapping) {
-  std::map<std::string, int> x;
-  x["foo"] = 1;
-  x["bar"] = 2;
-
-  std::string out;
-  llvm::raw_string_ostream ostr(out);
-  Output xout(ostr, nullptr, 0);
-
-  xout << x;
-  ostr.flush();
-  EXPECT_EQ("---\n"
-            "bar:             2\n"
-            "foo:             1\n"
-            "...\n",
-            out);
-
-  Input yin(out);
-  std::map<std::string, int> y;
-  yin >> y;
-  EXPECT_EQ(2ul, y.size());
-  EXPECT_EQ(1, y["foo"]);
-  EXPECT_EQ(2, y["bar"]);
-}
-
-LLVM_YAML_IS_STRING_MAP(FooBar)
-
-TEST(YAMLIO, TestCustomMappingStruct) {
-  std::map<std::string, FooBar> x;
-  x["foo"].foo = 1;
-  x["foo"].bar = 2;
-  x["bar"].foo = 3;
-  x["bar"].bar = 4;
-
-  std::string out;
-  llvm::raw_string_ostream ostr(out);
-  Output xout(ostr, nullptr, 0);
-
-  xout << x;
-  ostr.flush();
-  EXPECT_EQ("---\n"
-            "bar:             \n"
-            "  foo:             3\n"
-            "  bar:             4\n"
-            "foo:             \n"
-            "  foo:             1\n"
-            "  bar:             2\n"
-            "...\n",
-            out);
-
-  Input yin(out);
-  std::map<std::string, FooBar> y;
-  yin >> y;
-  EXPECT_EQ(2ul, y.size());
-  EXPECT_EQ(1, y["foo"].foo);
-  EXPECT_EQ(2, y["foo"].bar);
-  EXPECT_EQ(3, y["bar"].foo);
-  EXPECT_EQ(4, y["bar"].bar);
-}
-
-static void TestEscaped(llvm::StringRef Input, llvm::StringRef Expected) {
-  std::string out;
-  llvm::raw_string_ostream ostr(out);
-  Output xout(ostr, nullptr, 0);
-
-  llvm::yaml::EmptyContext Ctx;
-  yamlize(xout, Input, true, Ctx);
-
-  ostr.flush();
-
-  // Make a separate StringRef so we get nice byte-by-byte output.
-  llvm::StringRef Got(out);
-  EXPECT_EQ(Expected, Got);
-}
-
-TEST(YAMLIO, TestEscaped) {
-  // Single quote
-  TestEscaped("@abc@", "'@abc@'");
-  // No quote
-  TestEscaped("abc", "abc");
-  // Forward slash quoted
-  TestEscaped("abc/", "'abc/'");
-  // Double quote non-printable
-  TestEscaped("\01@abc@", "\"\\x01@abc@\"");
-  // Double quote inside single quote
-  TestEscaped("abc\"fdf", "'abc\"fdf'");
-  // Double quote inside double quote
-  TestEscaped("\01bc\"fdf", "\"\\x01bc\\\"fdf\"");
-  // Single quote inside single quote
-  TestEscaped("abc'fdf", "'abc''fdf'");
-  // UTF8
-  TestEscaped("/*параметр*/", "\"/*параметр*/\"");
-  // UTF8 with single quote inside double quote
-  TestEscaped("parameter 'параметр' is unused",
-              "\"parameter 'параметр' is unused\"");
-
-  // String with embedded non-printable multibyte UTF-8 sequence (U+200B
-  // zero-width space). The thing to test here is that we emit a
-  // unicode-scalar level escape like \uNNNN (at the YAML level), and don't
-  // just pass the UTF-8 byte sequence through as with quoted printables.
-  {
-    const unsigned char foobar[10] = {'f', 'o', 'o',
-                                      0xE2, 0x80, 0x8B, // UTF-8 of U+200B
-                                      'b', 'a', 'r',
-                                      0x0};
-    TestEscaped((char const *)foobar, "\"foo\\u200Bbar\"");
-  }
-}
-
-TEST(YAMLIO, Numeric) {
-  EXPECT_TRUE(isNumeric(".inf"));
-  EXPECT_TRUE(isNumeric(".INF"));
-  EXPECT_TRUE(isNumeric(".Inf"));
-  EXPECT_TRUE(isNumeric("-.inf"));
-  EXPECT_TRUE(isNumeric("+.inf"));
-
-  EXPECT_TRUE(isNumeric(".nan"));
-  EXPECT_TRUE(isNumeric(".NaN"));
-  EXPECT_TRUE(isNumeric(".NAN"));
-
-  EXPECT_TRUE(isNumeric("0"));
-  EXPECT_TRUE(isNumeric("0."));
-  EXPECT_TRUE(isNumeric("0.0"));
-  EXPECT_TRUE(isNumeric("-0.0"));
-  EXPECT_TRUE(isNumeric("+0.0"));
-
-  EXPECT_TRUE(isNumeric("12345"));
-  EXPECT_TRUE(isNumeric("012345"));
-  EXPECT_TRUE(isNumeric("+12.0"));
-  EXPECT_TRUE(isNumeric(".5"));
-  EXPECT_TRUE(isNumeric("+.5"));
-  EXPECT_TRUE(isNumeric("-1.0"));
-
-  EXPECT_TRUE(isNumeric("2.3e4"));
-  EXPECT_TRUE(isNumeric("-2E+05"));
-  EXPECT_TRUE(isNumeric("+12e03"));
-  EXPECT_TRUE(isNumeric("6.8523015e+5"));
-
-  EXPECT_TRUE(isNumeric("1.e+1"));
-  EXPECT_TRUE(isNumeric(".0e+1"));
-
-  EXPECT_TRUE(isNumeric("0x2aF3"));
-  EXPECT_TRUE(isNumeric("0o01234567"));
-
-  EXPECT_FALSE(isNumeric("not a number"));
-  EXPECT_FALSE(isNumeric("."));
-  EXPECT_FALSE(isNumeric(".e+1"));
-  EXPECT_FALSE(isNumeric(".1e"));
-  EXPECT_FALSE(isNumeric(".1e+"));
-  EXPECT_FALSE(isNumeric(".1e++1"));
-
-  EXPECT_FALSE(isNumeric("ABCD"));
-  EXPECT_FALSE(isNumeric("+0x2AF3"));
-  EXPECT_FALSE(isNumeric("-0x2AF3"));
-  EXPECT_FALSE(isNumeric("0x2AF3Z"));
-  EXPECT_FALSE(isNumeric("0o012345678"));
-  EXPECT_FALSE(isNumeric("0xZ"));
-  EXPECT_FALSE(isNumeric("-0o012345678"));
-  EXPECT_FALSE(isNumeric("000003A8229434B839616A25C16B0291F77A438B"));
-
-  EXPECT_FALSE(isNumeric(""));
-  EXPECT_FALSE(isNumeric("."));
-  EXPECT_FALSE(isNumeric(".e+1"));
-  EXPECT_FALSE(isNumeric(".e+"));
-  EXPECT_FALSE(isNumeric(".e"));
-  EXPECT_FALSE(isNumeric("e1"));
-
-  // Deprecated formats: as for YAML 1.2 specification, the following are not
-  // valid numbers anymore:
-  //
-  // * Sexagecimal numbers
-  // * Decimal numbers with comma s the delimiter
-  // * "inf", "nan" without '.' prefix
-  EXPECT_FALSE(isNumeric("3:25:45"));
-  EXPECT_FALSE(isNumeric("+12,345"));
-  EXPECT_FALSE(isNumeric("-inf"));
-  EXPECT_FALSE(isNumeric("1,230.15"));
-}
-
-//===----------------------------------------------------------------------===//
-//  Test PolymorphicTraits and TaggedScalarTraits
-//===----------------------------------------------------------------------===//
-
-struct Poly {
-  enum NodeKind {
-    NK_Scalar,
-    NK_Seq,
-    NK_Map,
-  } Kind;
-
-  Poly(NodeKind Kind) : Kind(Kind) {}
-
-  virtual ~Poly() = default;
-
-  NodeKind getKind() const { return Kind; }
-};
-
-struct Scalar : Poly {
-  enum ScalarKind {
-    SK_Unknown,
-    SK_Double,
-    SK_Bool,
-  } SKind;
-
-  union {
-    double DoubleValue;
-    bool BoolValue;
-  };
-
-  Scalar() : Poly(NK_Scalar), SKind(SK_Unknown) {}
-  Scalar(double DoubleValue)
-      : Poly(NK_Scalar), SKind(SK_Double), DoubleValue(DoubleValue) {}
-  Scalar(bool BoolValue)
-      : Poly(NK_Scalar), SKind(SK_Bool), BoolValue(BoolValue) {}
-
-  static bool classof(const Poly *N) { return N->getKind() == NK_Scalar; }
-};
-
-struct Seq : Poly, std::vector<std::unique_ptr<Poly>> {
-  Seq() : Poly(NK_Seq) {}
-
-  static bool classof(const Poly *N) { return N->getKind() == NK_Seq; }
-};
-
-struct Map : Poly, llvm::StringMap<std::unique_ptr<Poly>> {
-  Map() : Poly(NK_Map) {}
-
-  static bool classof(const Poly *N) { return N->getKind() == NK_Map; }
-};
-
-namespace llvm {
-namespace yaml {
-
-template <> struct PolymorphicTraits<std::unique_ptr<Poly>> {
-  static NodeKind getKind(const std::unique_ptr<Poly> &N) {
-    if (isa<Scalar>(*N))
-      return NodeKind::Scalar;
-    if (isa<Seq>(*N))
-      return NodeKind::Sequence;
-    if (isa<Map>(*N))
-      return NodeKind::Map;
-    llvm_unreachable("unsupported node type");
-  }
-
-  static Scalar &getAsScalar(std::unique_ptr<Poly> &N) {
-    if (!N || !isa<Scalar>(*N))
-      N = llvm::make_unique<Scalar>();
-    return *cast<Scalar>(N.get());
-  }
-
-  static Seq &getAsSequence(std::unique_ptr<Poly> &N) {
-    if (!N || !isa<Seq>(*N))
-      N = llvm::make_unique<Seq>();
-    return *cast<Seq>(N.get());
-  }
-
-  static Map &getAsMap(std::unique_ptr<Poly> &N) {
-    if (!N || !isa<Map>(*N))
-      N = llvm::make_unique<Map>();
-    return *cast<Map>(N.get());
-  }
-};
-
-template <> struct TaggedScalarTraits<Scalar> {
-  static void output(const Scalar &S, void *Ctxt, raw_ostream &ScalarOS,
-                     raw_ostream &TagOS) {
-    switch (S.SKind) {
-    case Scalar::SK_Unknown:
-      report_fatal_error("output unknown scalar");
-      break;
-    case Scalar::SK_Double:
-      TagOS << "!double";
-      ScalarTraits<double>::output(S.DoubleValue, Ctxt, ScalarOS);
-      break;
-    case Scalar::SK_Bool:
-      TagOS << "!bool";
-      ScalarTraits<bool>::output(S.BoolValue, Ctxt, ScalarOS);
-      break;
-    }
-  }
-
-  static StringRef input(StringRef ScalarStr, StringRef Tag, void *Ctxt,
-                         Scalar &S) {
-    S.SKind = StringSwitch<Scalar::ScalarKind>(Tag)
-                  .Case("!double", Scalar::SK_Double)
-                  .Case("!bool", Scalar::SK_Bool)
-                  .Default(Scalar::SK_Unknown);
-    switch (S.SKind) {
-    case Scalar::SK_Unknown:
-      return StringRef("unknown scalar tag");
-    case Scalar::SK_Double:
-      return ScalarTraits<double>::input(ScalarStr, Ctxt, S.DoubleValue);
-    case Scalar::SK_Bool:
-      return ScalarTraits<bool>::input(ScalarStr, Ctxt, S.BoolValue);
-    }
-    llvm_unreachable("unknown scalar kind");
-  }
-
-  static QuotingType mustQuote(const Scalar &S, StringRef Str) {
-    switch (S.SKind) {
-    case Scalar::SK_Unknown:
-      report_fatal_error("quote unknown scalar");
-    case Scalar::SK_Double:
-      return ScalarTraits<double>::mustQuote(Str);
-    case Scalar::SK_Bool:
-      return ScalarTraits<bool>::mustQuote(Str);
-    }
-    llvm_unreachable("unknown scalar kind");
-  }
-};
-
-template <> struct CustomMappingTraits<Map> {
-  static void inputOne(IO &IO, StringRef Key, Map &M) {
-    IO.mapRequired(Key.str().c_str(), M[Key]);
-  }
-
-  static void output(IO &IO, Map &M) {
-    for (auto &N : M)
-      IO.mapRequired(N.getKey().str().c_str(), N.getValue());
-  }
-};
-
-template <> struct SequenceTraits<Seq> {
-  static size_t size(IO &IO, Seq &A) { return A.size(); }
-
-  static std::unique_ptr<Poly> &element(IO &IO, Seq &A, size_t Index) {
-    if (Index >= A.size())
-      A.resize(Index + 1);
-    return A[Index];
-  }
-};
-
-} // namespace yaml
-} // namespace llvm
-
-TEST(YAMLIO, TestReadWritePolymorphicScalar) {
-  std::string intermediate;
-  std::unique_ptr<Poly> node = llvm::make_unique<Scalar>(true);
-
-  llvm::raw_string_ostream ostr(intermediate);
-  Output yout(ostr);
-#ifdef GTEST_HAS_DEATH_TEST
-#ifndef NDEBUG
-  EXPECT_DEATH(yout << node, "plain scalar documents are not supported");
-#endif
-#endif
-}
-
-TEST(YAMLIO, TestReadWritePolymorphicSeq) {
-  std::string intermediate;
-  {
-    auto seq = llvm::make_unique<Seq>();
-    seq->push_back(llvm::make_unique<Scalar>(true));
-    seq->push_back(llvm::make_unique<Scalar>(1.0));
-    auto node = llvm::unique_dyn_cast<Poly>(seq);
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << node;
-  }
-  {
-    Input yin(intermediate);
-    std::unique_ptr<Poly> node;
-    yin >> node;
-
-    EXPECT_FALSE(yin.error());
-    auto seq = llvm::dyn_cast<Seq>(node.get());
-    ASSERT_TRUE(seq);
-    ASSERT_EQ(seq->size(), 2u);
-    auto first = llvm::dyn_cast<Scalar>((*seq)[0].get());
-    ASSERT_TRUE(first);
-    EXPECT_EQ(first->SKind, Scalar::SK_Bool);
-    EXPECT_TRUE(first->BoolValue);
-    auto second = llvm::dyn_cast<Scalar>((*seq)[1].get());
-    ASSERT_TRUE(second);
-    EXPECT_EQ(second->SKind, Scalar::SK_Double);
-    EXPECT_EQ(second->DoubleValue, 1.0);
-  }
-}
-
-TEST(YAMLIO, TestReadWritePolymorphicMap) {
-  std::string intermediate;
-  {
-    auto map = llvm::make_unique<Map>();
-    (*map)["foo"] = llvm::make_unique<Scalar>(false);
-    (*map)["bar"] = llvm::make_unique<Scalar>(2.0);
-    std::unique_ptr<Poly> node = llvm::unique_dyn_cast<Poly>(map);
-
-    llvm::raw_string_ostream ostr(intermediate);
-    Output yout(ostr);
-    yout << node;
-  }
-  {
-    Input yin(intermediate);
-    std::unique_ptr<Poly> node;
-    yin >> node;
-
-    EXPECT_FALSE(yin.error());
-    auto map = llvm::dyn_cast<Map>(node.get());
-    ASSERT_TRUE(map);
-    auto foo = llvm::dyn_cast<Scalar>((*map)["foo"].get());
-    ASSERT_TRUE(foo);
-    EXPECT_EQ(foo->SKind, Scalar::SK_Bool);
-    EXPECT_FALSE(foo->BoolValue);
-    auto bar = llvm::dyn_cast<Scalar>((*map)["bar"].get());
-    ASSERT_TRUE(bar);
-    EXPECT_EQ(bar->SKind, Scalar::SK_Double);
-    EXPECT_EQ(bar->DoubleValue, 2.0);
-  }
-}