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Commit 424cbbeb authored by Jakub Tyszkowski's avatar Jakub Tyszkowski
Browse files

common/strings: Support classes with operator<<(std::ostream&, const T&) 

This allows to reuse all the existing string conversion logic for custom
classes for which we already have these defined:
  std::ostream& operator<<(std::ostream& os, const T& obj)

Bug: 150670922
Tag: #feature
Test: atest packages/modules/Bluetooth/system/gd/common/strings_test.cc
Sponsor: jpawlowski@
Change-Id: Ie31584231800573b5dbc59caba1cccc0c0787be2
parent 099bd1e4

system/gd/common/strings.h

+7 −0
Original line number Diff line number Diff line
@@ -36,6 +36,13 @@ 
namespace bluetooth {

namespace common {



template <typename T>

inline std::string ToString(const T& value) {

  std::stringstream tmp;

  tmp << value;

  return tmp.str();

}



// Convert number into a hex string prefixed with 0x

template <typename T>

std::string ToHexString(T x) {

system/gd/common/strings_test.cc

+11 −0
Original line number Diff line number Diff line
@@ -256,4 +256,15 @@ TEST(StringsTest, string_format_time_with_ms_test) { 
  ASSERT_THAT(StringFormatTimeWithMilliseconds(format, time_point2, gmtime), StrEq("2009-02-13 23:31:30.001"));

}



class ExampleClass {};

std::ostream& operator<<(std::ostream& os, const ExampleClass& obj) {

  os << "ExampleClass";

  return os;

}



TEST(StringsTest, example_class_to_string_test) {

  ExampleClass obj;

  ASSERT_THAT(ToString(obj), StrEq("ExampleClass"));

}



}  // namespace testing