Import LLVM 10.0.0 release including clang, lld and lldb.

ok hackroom
tested by plenty

1 files changed, 185 insertions, 0 deletions

diff --git a/gnu/llvm/lldb/utils/TableGen/LLDBOptionDefEmitter.cpp b/gnu/llvm/lldb/utils/TableGen/LLDBOptionDefEmitter.cpp
new file mode 100644
index 00000000000..6e73d0c53de
--- /dev/null
+++ b/gnu/llvm/lldb/utils/TableGen/LLDBOptionDefEmitter.cpp
@@ -0,0 +1,185 @@
+//===- LLDBOptionDefEmitter.cpp -------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// These tablegen backends emits LLDB's OptionDefinition values for different
+// LLDB commands.
+//
+//===----------------------------------------------------------------------===//
+
+#include "LLDBTableGenBackends.h"
+#include "LLDBTableGenUtils.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/TableGen/Record.h"
+#include "llvm/TableGen/StringMatcher.h"
+#include "llvm/TableGen/TableGenBackend.h"
+#include <vector>
+
+using namespace llvm;
+using namespace lldb_private;
+
+namespace {
+struct CommandOption {
+  std::vector<std::string> GroupsArg;
+  bool Required = false;
+  std::string FullName;
+  std::string ShortName;
+  std::string ArgType;
+  bool OptionalArg = false;
+  std::string Validator;
+  std::string ArgEnum;
+  std::vector<StringRef> Completions;
+  std::string Description;
+
+  CommandOption() = default;
+  CommandOption(Record *Option) {
+    if (Option->getValue("Groups")) {
+      // The user specified a list of groups.
+      auto Groups = Option->getValueAsListOfInts("Groups");
+      for (int Group : Groups)
+        GroupsArg.push_back("LLDB_OPT_SET_" + std::to_string(Group));
+    } else if (Option->getValue("GroupStart")) {
+      // The user specified a range of groups (with potentially only one
+      // element).
+      int GroupStart = Option->getValueAsInt("GroupStart");
+      int GroupEnd = Option->getValueAsInt("GroupEnd");
+      for (int i = GroupStart; i <= GroupEnd; ++i)
+        GroupsArg.push_back("LLDB_OPT_SET_" + std::to_string(i));
+    }
+
+    // Check if this option is required.
+    Required = Option->getValue("Required");
+
+    // Add the full and short name for this option.
+    FullName = Option->getValueAsString("FullName");
+    ShortName = Option->getValueAsString("ShortName");
+
+    if (auto A = Option->getValue("ArgType"))
+      ArgType = A->getValue()->getAsUnquotedString();
+    OptionalArg = Option->getValue("OptionalArg") != nullptr;
+
+    if (Option->getValue("Validator"))
+      Validator = Option->getValueAsString("Validator");
+
+    if (Option->getValue("ArgEnum"))
+      ArgEnum = Option->getValueAsString("ArgEnum");
+
+    if (Option->getValue("Completions"))
+      Completions = Option->getValueAsListOfStrings("Completions");
+
+    if (auto D = Option->getValue("Description"))
+      Description = D->getValue()->getAsUnquotedString();
+  }
+};
+} // namespace
+
+static void emitOption(const CommandOption &O, raw_ostream &OS) {
+  OS << "  {";
+
+  // If we have any groups, we merge them. Otherwise we move this option into
+  // the all group.
+  if (O.GroupsArg.empty())
+    OS << "LLDB_OPT_SET_ALL";
+  else
+    OS << llvm::join(O.GroupsArg.begin(), O.GroupsArg.end(), " | ");
+
+  OS << ", ";
+
+  // Check if this option is required.
+  OS << (O.Required ? "true" : "false");
+
+  // Add the full and short name for this option.
+  OS << ", \"" << O.FullName << "\", ";
+  OS << '\'' << O.ShortName << "'";
+
+  // Decide if we have either an option, required or no argument for this
+  // option.
+  OS << ", OptionParser::";
+  if (!O.ArgType.empty()) {
+    if (O.OptionalArg)
+      OS << "eOptionalArgument";
+    else
+      OS << "eRequiredArgument";
+  } else
+    OS << "eNoArgument";
+  OS << ", ";
+
+  if (!O.Validator.empty())
+    OS << O.Validator;
+  else
+    OS << "nullptr";
+  OS << ", ";
+
+  if (!O.ArgEnum.empty())
+    OS << O.ArgEnum;
+  else
+    OS << "{}";
+  OS << ", ";
+
+  // Read the tab completions we offer for this option (if there are any)
+  if (!O.Completions.empty()) {
+    std::vector<std::string> CompletionArgs;
+    for (llvm::StringRef Completion : O.Completions)
+      CompletionArgs.push_back("CommandCompletions::e" + Completion.str() +
+                               "Completion");
+
+    OS << llvm::join(CompletionArgs.begin(), CompletionArgs.end(), " | ");
+  } else
+    OS << "CommandCompletions::eNoCompletion";
+
+  // Add the argument type.
+  OS << ", eArgType";
+  if (!O.ArgType.empty()) {
+    OS << O.ArgType;
+  } else
+    OS << "None";
+  OS << ", ";
+
+  // Add the description if there is any.
+  if (!O.Description.empty()) {
+    OS << "\"";
+    llvm::printEscapedString(O.Description, OS);
+    OS << "\"";
+  } else
+    OS << "\"\"";
+  OS << "},\n";
+}
+
+/// Emits all option initializers to the raw_ostream.
+static void emitOptions(std::string Command, std::vector<Record *> Records,
+                        raw_ostream &OS) {
+  std::vector<CommandOption> Options;
+  for (Record *R : Records)
+    Options.emplace_back(R);
+
+  std::string ID = Command;
+  std::replace(ID.begin(), ID.end(), ' ', '_');
+  // Generate the macro that the user needs to define before including the
+  // *.inc file.
+  std::string NeededMacro = "LLDB_OPTIONS_" + ID;
+
+  // All options are in one file, so we need put them behind macros and ask the
+  // user to define the macro for the options that are needed.
+  OS << "// Options for " << Command << "\n";
+  OS << "#ifdef " << NeededMacro << "\n";
+  OS << "constexpr static OptionDefinition g_" + ID + "_options[] = {\n";
+  for (CommandOption &CO : Options)
+    emitOption(CO, OS);
+  // We undefine the macro for the user like Clang's include files are doing it.
+  OS << "};\n";
+  OS << "#undef " << NeededMacro << "\n";
+  OS << "#endif // " << Command << " command\n\n";
+}
+
+void lldb_private::EmitOptionDefs(RecordKeeper &Records, raw_ostream &OS) {
+  emitSourceFileHeader("Options for LLDB command line commands.", OS);
+
+  std::vector<Record *> Options = Records.getAllDerivedDefinitions("Option");
+  for (auto &CommandRecordPair : getRecordsByName(Options, "Command")) {
+    emitOptions(CommandRecordPair.first, CommandRecordPair.second, OS);
+  }
+}