[TextAPI] TBD Reader/Writer

Add basic infrastructure for reading and writting TBD files (version 1 - 3).

The TextAPI library is not used by anything yet (besides the unit tests). Tool
support will be added in a separate commit.

The TBD format is currently documented in the implementation file (TextStub.cpp).

https://reviews.llvm.org/D53945

Update: This contains changes to fix issues discovered by the bots:
 - add parentheses to silence warnings.
 - rename variables
 - use PlatformType from BinaryFormat
llvm-svn: 347823

1 files changed, 179 insertions, 0 deletions

diff --git a/llvm/lib/TextAPI/MachO/TextStubCommon.cpp b/llvm/lib/TextAPI/MachO/TextStubCommon.cpp
new file mode 100644
index 00000000000..6c42d40bfb1
--- /dev/null
+++ b/llvm/lib/TextAPI/MachO/TextStubCommon.cpp
@@ -0,0 +1,179 @@
+//===- lib/TextAPI/TextStubCommon.cpp - Text Stub Common --------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief Implememts common Text Stub YAML mappings.
+///
+//===----------------------------------------------------------------------===//
+
+#include "TextStubCommon.h"
+#include "TextAPIContext.h"
+
+using namespace llvm::MachO;
+
+namespace llvm {
+namespace yaml {
+
+void ScalarTraits<FlowStringRef>::output(const FlowStringRef &Value, void *Ctx,
+                                         raw_ostream &OS) {
+  ScalarTraits<StringRef>::output(Value, Ctx, OS);
+}
+StringRef ScalarTraits<FlowStringRef>::input(StringRef Value, void *Ctx,
+                                             FlowStringRef &Out) {
+  return ScalarTraits<StringRef>::input(Value, Ctx, Out.value);
+}
+QuotingType ScalarTraits<FlowStringRef>::mustQuote(StringRef Name) {
+  return ScalarTraits<StringRef>::mustQuote(Name);
+}
+
+void ScalarEnumerationTraits<ObjCConstraintType>::enumeration(
+    IO &IO, ObjCConstraintType &Constraint) {
+  IO.enumCase(Constraint, "none", ObjCConstraintType::None);
+  IO.enumCase(Constraint, "retain_release", ObjCConstraintType::Retain_Release);
+  IO.enumCase(Constraint, "retain_release_for_simulator",
+              ObjCConstraintType::Retain_Release_For_Simulator);
+  IO.enumCase(Constraint, "retain_release_or_gc",
+              ObjCConstraintType::Retain_Release_Or_GC);
+  IO.enumCase(Constraint, "gc", ObjCConstraintType::GC);
+}
+
+void ScalarTraits<PlatformType>::output(const PlatformType &Value, void *,
+                                        raw_ostream &OS) {
+  switch (Value) {
+  case PLATFORM_MACOS:
+    OS << "macosx";
+    break;
+  case PLATFORM_IOS:
+    OS << "ios";
+    break;
+  case PLATFORM_WATCHOS:
+    OS << "watchos";
+    break;
+  case PLATFORM_TVOS:
+    OS << "tvos";
+    break;
+  case PLATFORM_BRIDGEOS:
+    OS << "bridgeos";
+    break;
+  }
+}
+StringRef ScalarTraits<PlatformType>::input(StringRef Scalar, void *,
+                                            PlatformType &Value) {
+  int Result = StringSwitch<unsigned>(Scalar)
+                   .Case("macosx", PLATFORM_MACOS)
+                   .Case("ios", PLATFORM_IOS)
+                   .Case("watchos", PLATFORM_WATCHOS)
+                   .Case("tvos", PLATFORM_TVOS)
+                   .Case("bridgeos", PLATFORM_BRIDGEOS)
+                   .Default(0);
+
+  if (!Result)
+    return "unknown platform";
+
+  Value = static_cast<PlatformType>(Result);
+  return {};
+}
+QuotingType ScalarTraits<PlatformType>::mustQuote(StringRef) {
+  return QuotingType::None;
+}
+
+void ScalarBitSetTraits<ArchitectureSet>::bitset(IO &IO,
+                                                 ArchitectureSet &Archs) {
+#define ARCHINFO(arch, type, subtype)                                          \
+  IO.bitSetCase(Archs, #arch, 1U << static_cast<int>(Architecture::arch));
+#include "llvm/TextAPI/MachO/Architecture.def"
+#undef ARCHINFO
+}
+
+void ScalarTraits<Architecture>::output(const Architecture &Value, void *,
+                                        raw_ostream &OS) {
+  OS << Value;
+}
+StringRef ScalarTraits<Architecture>::input(StringRef Scalar, void *,
+                                            Architecture &Value) {
+  Value = getArchitectureFromName(Scalar);
+  return {};
+}
+QuotingType ScalarTraits<Architecture>::mustQuote(StringRef) {
+  return QuotingType::None;
+}
+
+void ScalarTraits<PackedVersion>::output(const PackedVersion &Value, void *,
+                                         raw_ostream &OS) {
+  OS << Value;
+}
+StringRef ScalarTraits<PackedVersion>::input(StringRef Scalar, void *,
+                                             PackedVersion &Value) {
+  if (!Value.parse32(Scalar))
+    return "invalid packed version string.";
+  return {};
+}
+QuotingType ScalarTraits<PackedVersion>::mustQuote(StringRef) {
+  return QuotingType::None;
+}
+
+void ScalarTraits<SwiftVersion>::output(const SwiftVersion &Value, void *,
+                                        raw_ostream &OS) {
+  switch (Value) {
+  case 1:
+    OS << "1.0";
+    break;
+  case 2:
+    OS << "1.1";
+    break;
+  case 3:
+    OS << "2.0";
+    break;
+  case 4:
+    OS << "3.0";
+    break;
+  default:
+    OS << (unsigned)Value;
+    break;
+  }
+}
+StringRef ScalarTraits<SwiftVersion>::input(StringRef Scalar, void *,
+                                            SwiftVersion &Value) {
+  Value = StringSwitch<SwiftVersion>(Scalar)
+              .Case("1.0", 1)
+              .Case("1.1", 2)
+              .Case("2.0", 3)
+              .Case("3.0", 4)
+              .Default(0);
+  if (Value != SwiftVersion(0))
+    return {};
+
+  if (Scalar.getAsInteger(10, Value))
+    return "invalid Swift ABI version.";
+
+  return StringRef();
+}
+QuotingType ScalarTraits<SwiftVersion>::mustQuote(StringRef) {
+  return QuotingType::None;
+}
+
+void ScalarTraits<UUID>::output(const UUID &Value, void *, raw_ostream &OS) {
+  OS << Value.first << ": " << Value.second;
+}
+StringRef ScalarTraits<UUID>::input(StringRef Scalar, void *, UUID &Value) {
+  auto Split = Scalar.split(':');
+  auto Arch = Split.first.trim();
+  auto UUID = Split.second.trim();
+  if (UUID.empty())
+    return "invalid uuid string pair";
+  Value.first = getArchitectureFromName(Arch);
+  Value.second = UUID;
+  return {};
+}
+QuotingType ScalarTraits<UUID>::mustQuote(StringRef) {
+  return QuotingType::Single;
+}
+
+} // end namespace yaml.
+} // end namespace llvm.