C++ ArrayRef::size方法代码示例

 static void loadImports(llvm::ArrayRef<ImportPtr> imports)
 {
     for (size_t i = 0; i < imports.size(); ++i) {
         module->imports.push_back(imports[i]);
     }
     for (size_t i = 0; i < imports.size(); ++i) {
         loadDependent(module, NULL, imports[i], false);
     }
     for (size_t i = 0; i < imports.size(); ++i) {
         initModule(imports[i]->module);
     }
 }

static bool matchTempness(CodePtr code,
                          llvm::ArrayRef<ValueTempness> argsTempness,
                          bool callByName,
                          vector<ValueTempness> &tempnessKey,
                          vector<uint8_t> &forwardedRValueFlags)
{
    llvm::ArrayRef<FormalArgPtr> fargs = code->formalArgs;
    
    if (code->hasVarArg)
        assert(fargs.size()-1 <= argsTempness.size());
    else
        assert(fargs.size() == argsTempness.size());

    tempnessKey.clear();
    forwardedRValueFlags.clear();
    
    unsigned varArgSize = argsTempness.size()-fargs.size()+1;
    for (unsigned i = 0, j = 0; i < fargs.size(); ++i) {
        if (callByName && (fargs[i]->tempness == TEMPNESS_FORWARD)) {
                error(fargs[i], "forwarded arguments are not allowed "
                      "in call-by-name procedures");
        }
        if (fargs[i]->varArg) {
            for (; j < varArgSize; ++j) {
                if (!tempnessMatches(argsTempness[i+j], fargs[i]->tempness))
                    return false;
                tempnessKey.push_back(
                    tempnessKeyItem(fargs[i]->tempness,
                                    argsTempness[i+j]));
                bool forwardedRValue =
                    (fargs[i]->tempness == TEMPNESS_FORWARD) &&
                    (argsTempness[i+j] == TEMPNESS_RVALUE);
                forwardedRValueFlags.push_back(forwardedRValue);
            }
            --j;
        } else {
            if (!tempnessMatches(argsTempness[i+j], fargs[i]->tempness))
                return false;
            tempnessKey.push_back(
                tempnessKeyItem(fargs[i]->tempness,
                                argsTempness[i+j]));
            bool forwardedRValue = 
                (fargs[i]->tempness == TEMPNESS_FORWARD) &&
                (argsTempness[i+j] == TEMPNESS_RVALUE);
            forwardedRValueFlags.push_back(forwardedRValue);
        }
    }
    return true;
}

void
PythonBytes::SetBytes(llvm::ArrayRef<uint8_t> bytes)
{
    const char *data = reinterpret_cast<const char *>(bytes.data());
    PyObject *py_bytes = PyBytes_FromStringAndSize(data, bytes.size());
    PythonObject::Reset(PyRefType::Owned, py_bytes);
}

void getProcedureMonoTypes(ProcedureMono &mono, EnvPtr env,
    llvm::ArrayRef<FormalArgPtr> formalArgs, bool hasVarArg)
{
    if (mono.monoState == Procedure_NoOverloads && !hasVarArg)
    {
        assert(mono.monoTypes.empty());
        mono.monoState = Procedure_MonoOverload;
        for (size_t i = 0; i < formalArgs.size(); ++i) {
            if (formalArgs[i]->type == NULL)
                goto poly;
            LocationContext loc(formalArgs[i]->type->location);
            PatternPtr argPattern =
                evaluateOnePattern(formalArgs[i]->type, env);
            ObjectPtr argTypeObj = derefDeep(argPattern);
            if (argTypeObj == NULL)
                goto poly;
            TypePtr argType;
            if (!staticToType(argTypeObj, argType))
                error(formalArgs[i], "expecting a type");

            mono.monoTypes.push_back(argType);
        }
    } else
        goto poly;
    return;

poly:
    mono.monoTypes.clear();
    mono.monoState = Procedure_PolyOverload;
    return;
}

bool TestClient::SetInferior(llvm::ArrayRef<std::string> inferior_args) {
  std::stringstream command;
  command << "A";
  for (size_t i = 0; i < inferior_args.size(); i++) {
    if (i > 0)
      command << ',';
    std::string hex_encoded = toHex(inferior_args[i]);
    command << hex_encoded.size() << ',' << i << ',' << hex_encoded;
  }

  if (!SendMessage(command.str()))
    return false;
  if (!SendMessage("qLaunchSuccess"))
    return false;
  std::string response;
  if (!SendMessage("qProcessInfo", response))
    return false;
  auto create_or_error = ProcessInfo::Create(response);
  if (auto create_error = create_or_error.takeError()) {
    GTEST_LOG_(ERROR) << toString(std::move(create_error));
    return false;
  }

  m_process_info = *create_or_error;
  return true;
}

static void constructCompileCommands(
    CompileCommandPairs &compileCommands,
    const clang::tooling::CompilationDatabase &compilationDatabase,
    llvm::ArrayRef<std::string> sourcePaths)
{
    for (unsigned pathIndex = 0, pathEnd = sourcePaths.size(); pathIndex != pathEnd; pathIndex++)
    {
        llvm::SmallString<1024> filePath(clang::tooling::getAbsolutePath(sourcePaths[pathIndex]));

        std::vector<clang::tooling::CompileCommand> compileCmdsForFile =
            compilationDatabase.getCompileCommands(filePath.str());
        if (!compileCmdsForFile.empty())
        {
            for (int commandsIndex = 0, commandsEnd = compileCmdsForFile.size();
                commandsIndex != commandsEnd; commandsIndex++)
            {
                compileCommands.push_back(
                    std::make_pair(filePath.str(), compileCmdsForFile[commandsIndex]));
            }
        }
        /* - this needs to be collected and the gathered information will be printed eventually
           - not here
        else
        {
            DEBUG({
                llvm::dbgs() << "Skipping " << filePath << ". Command line not found.\n";
            });
        }
        */
    }
}

void flatten(llvm::ArrayRef<AST_stmt*> roots, std::vector<AST*>& output, bool expand_scopes) {
    FlattenVisitor visitor(&output, expand_scopes);

    for (int i = 0; i < roots.size(); i++) {
        roots[i]->accept(&visitor);
    }
}

// Minidump string
llvm::Optional<std::string>
lldb_private::minidump::parseMinidumpString(llvm::ArrayRef<uint8_t> &data) {
  std::string result;

  const uint32_t *source_length;
  Status error = consumeObject(data, source_length);
  if (error.Fail() || *source_length > data.size() || *source_length % 2 != 0)
    return llvm::None;

  auto source_start = reinterpret_cast<const llvm::UTF16 *>(data.data());
  // source_length is the length of the string in bytes
  // we need the length of the string in UTF-16 characters/code points (16 bits
  // per char)
  // that's why it's divided by 2
  const auto source_end = source_start + (*source_length) / 2;
  // resize to worst case length
  result.resize(UNI_MAX_UTF8_BYTES_PER_CODE_POINT * (*source_length) / 2);
  auto result_start = reinterpret_cast<llvm::UTF8 *>(&result[0]);
  const auto result_end = result_start + result.size();
  llvm::ConvertUTF16toUTF8(&source_start, source_end, &result_start, result_end,
                           llvm::strictConversion);
  const auto result_size =
      std::distance(reinterpret_cast<llvm::UTF8 *>(&result[0]), result_start);
  result.resize(result_size); // shrink to actual length

  return result;
}

void printNameList(llvm::raw_ostream &out, llvm::ArrayRef<ObjectPtr> x)
{
    for (unsigned i = 0; i < x.size(); ++i) {
        if (i != 0)
            out << ", ";
        printName(out, x[i]);
    }
}

void printNameList(llvm::raw_ostream &out, llvm::ArrayRef<TypePtr> x)
{
    for (size_t i = 0; i < x.size(); ++i) {
        if (i != 0)
            out << ", ";
        printName(out, x[i].ptr());
    }
}

void writeRefs(const SymbolID &ID, llvm::ArrayRef<Ref> Refs,
               const StringTableOut &Strings, llvm::raw_ostream &OS) {
  OS << ID.raw();
  writeVar(Refs.size(), OS);
  for (const auto &Ref : Refs) {
    OS.write(static_cast<unsigned char>(Ref.Kind));
    writeLocation(Ref.Location, Strings, OS);
  }
}

// Linux Proc Status
// it's stored as an ascii string in the file
llvm::Optional<LinuxProcStatus>
LinuxProcStatus::Parse(llvm::ArrayRef<uint8_t> &data) {
  LinuxProcStatus result;
  result.proc_status =
      llvm::StringRef(reinterpret_cast<const char *>(data.data()), data.size());
  data = data.drop_front(data.size());

  llvm::SmallVector<llvm::StringRef, 0> lines;
  result.proc_status.split(lines, '\n', 42);
  // /proc/$pid/status has 41 lines, but why not use 42?
  for (auto line : lines) {
    if (line.consume_front("Pid:")) {
      line = line.trim();
      if (!line.getAsInteger(10, result.pid))
        return result;
    }
  }

  return llvm::None;
}

static void DumpDWARFExpr(Stream &s, llvm::ArrayRef<uint8_t> expr, Thread *thread) {
  if (auto order_and_width = GetByteOrderAndAddrSize(thread)) {
    DataExtractor extractor(expr.data(), expr.size(), order_and_width->first,
                            order_and_width->second);
    if (!DWARFExpression::PrintDWARFExpression(s, extractor,
                                               order_and_width->second,
                                               /*dwarf_ref_size*/ 4,
                                               /*location_expression*/ false))
      s.PutCString("invalid-dwarf-expr");
  } else
    s.PutCString("dwarf-expr");
}

llvm::ArrayRef<MinidumpMemoryDescriptor>
MinidumpMemoryDescriptor::ParseMemoryList(llvm::ArrayRef<uint8_t> &data) {
  const llvm::support::ulittle32_t *mem_ranges_count;
  Status error = consumeObject(data, mem_ranges_count);
  if (error.Fail() ||
      *mem_ranges_count * sizeof(MinidumpMemoryDescriptor) > data.size())
    return {};

  return llvm::makeArrayRef(
      reinterpret_cast<const MinidumpMemoryDescriptor *>(data.data()),
      *mem_ranges_count);
}

void addGlobals(ModulePtr m, llvm::ArrayRef<TopLevelItemPtr>  toplevels) {
    TopLevelItemPtr const *i, *end;
    for (i = toplevels.begin(), end = toplevels.end();
    i != end; ++i) {
        m->topLevelItems.push_back(*i);
        TopLevelItem *x = i->ptr();
        x->env = m->env;
        switch (x->objKind) {
        case ENUM_DECL : {
                EnumDecl *enumer = (EnumDecl *)x;
                TypePtr t = enumType(enumer);
                addGlobal(m, enumer->name, enumer->visibility, t.ptr());
                for (unsigned i = 0 ; i < enumer->members.size(); ++i) {
                    EnumMember *member = enumer->members[i].ptr();
                    member->index = (int)i;
                    member->type = t;
                    addGlobal(m, member->name, enumer->visibility, member);
                }
                break;
            }
        case PROCEDURE : {
                Procedure *proc = (Procedure *)x;
                if (proc->interface != NULL)
                    proc->interface->env = m->env;
                // fallthrough
            }
        default :
                if (x->name.ptr())
                    addGlobal(m, x->name, x->visibility, x);
        break;
    }

    }

    llvm::ArrayRef<TopLevelItemPtr> items = m->topLevelItems;
    for (size_t i = items.size() - toplevels.size(); i < items.size(); ++i) {
        Object *obj = items[i].ptr();
        switch (obj->objKind) {
        case OVERLOAD :
            initOverload((Overload *)obj);
            break;
        case INSTANCE_DECL :
            initVariantInstance((InstanceDecl *)obj);
            break;
        case STATIC_ASSERT_TOP_LEVEL:
            checkStaticAssert((StaticAssertTopLevel *)obj);
            break;
        default:
            break;
        }
    }

}