// Copyright 2007, Google Inc.

// All rights reserved.

//

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

//

//     * Redistributions of source code must retain the above copyright

// notice, this list of conditions and the following disclaimer.

//     * Redistributions in binary form must reproduce the above

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

//     * Neither the name of Google Inc. nor the names of its

// contributors may be used to endorse or promote products derived from

// this software without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Google Mock - a framework for writing C++ mock classes.

//

// This file defines some utilities useful for implementing Google

// Mock.  They are subject to change without notice, so please DO NOT

// USE THEM IN USER CODE.

#include "gmock/internal/gmock-internal-utils.h"

#include <ctype.h>

#include <ostream>  // NOLINT

#include <string>

#include "gmock/gmock.h"

#include "gmock/internal/gmock-port.h"

#include "gtest/gtest.h"

namespace testing {

namespace internal {

// Joins a vector of strings as if they are fields of a tuple; returns

// the joined string.

GTEST_API_ std::string JoinAsTuple(const Strings& fields) {

  switch (fields.size()) {

    case 0:

      return "";

    case 1:

      return fields[0];

    default:

      std::string result = "(" + fields[0];

      for (size_t i = 1; i < fields.size(); i++) {

        result += ", ";

        result += fields[i];

      }

      result += ")";

      return result;

  }

}

// Converts an identifier name to a space-separated list of lower-case

// words.  Each maximum substring of the form [A-Za-z][a-z]*|\d+ is

// treated as one word.  For example, both "FooBar123" and

// "foo_bar_123" are converted to "foo bar 123".

GTEST_API_ std::string ConvertIdentifierNameToWords(const char* id_name) {

  std::string result;

  char prev_char = '\0';

  for (const char* p = id_name; *p != '\0'; prev_char = *(p++)) {

    // We don't care about the current locale as the input is

    // guaranteed to be a valid C++ identifier name.

    const bool starts_new_word = IsUpper(*p) ||

        (!IsAlpha(prev_char) && IsLower(*p)) ||

        (!IsDigit(prev_char) && IsDigit(*p));

    if (IsAlNum(*p)) {

      if (starts_new_word && result != "")

        result += ' ';

      result += ToLower(*p);

    }

  }

  return result;

}

// This class reports Google Mock failures as Google Test failures.  A

// user can define another class in a similar fashion if they intend to

// use Google Mock with a testing framework other than Google Test.

class GoogleTestFailureReporter : public FailureReporterInterface {

 public:

  void ReportFailure(FailureType type, const char* file, int line,

                     const std::string& message) override {

    AssertHelper(type == kFatal ?

                 TestPartResult::kFatalFailure :

                 TestPartResult::kNonFatalFailure,

                 file,

                 line,

                 message.c_str()) = Message();

    if (type == kFatal) {

      posix::Abort();

    }

  }

};

// Returns the global failure reporter.  Will create a

// GoogleTestFailureReporter and return it the first time called.

GTEST_API_ FailureReporterInterface* GetFailureReporter() {

  // Points to the global failure reporter used by Google Mock.  gcc

  // guarantees that the following use of failure_reporter is

  // thread-safe.  We may need to add additional synchronization to

  // protect failure_reporter if we port Google Mock to other

  // compilers.

  static FailureReporterInterface* const failure_reporter =

      new GoogleTestFailureReporter();

  return failure_reporter;

}

// Protects global resources (stdout in particular) used by Log().

static GTEST_DEFINE_STATIC_MUTEX_(g_log_mutex);

// Returns true if and only if a log with the given severity is visible

// according to the --gmock_verbose flag.

GTEST_API_ bool LogIsVisible(LogSeverity severity) {

  if (GMOCK_FLAG(verbose) == kInfoVerbosity) {

    // Always show the log if --gmock_verbose=info.

    return true;

  } else if (GMOCK_FLAG(verbose) == kErrorVerbosity) {

    // Always hide it if --gmock_verbose=error.

    return false;

  } else {

    // If --gmock_verbose is neither "info" nor "error", we treat it

    // as "warning" (its default value).

    return severity == kWarning;

  }

}

// Prints the given message to stdout if and only if 'severity' >= the level

// specified by the --gmock_verbose flag.  If stack_frames_to_skip >=

// 0, also prints the stack trace excluding the top

// stack_frames_to_skip frames.  In opt mode, any positive

// stack_frames_to_skip is treated as 0, since we don't know which

// function calls will be inlined by the compiler and need to be

// conservative.

GTEST_API_ void Log(LogSeverity severity, const std::string& message,

                    int stack_frames_to_skip) {

  if (!LogIsVisible(severity))

    return;

  // Ensures that logs from different threads don't interleave.

  MutexLock l(&g_log_mutex);

  if (severity == kWarning) {

    // Prints a GMOCK WARNING marker to make the warnings easily searchable.

    std::cout << "\nGMOCK WARNING:";

  }

  // Pre-pends a new-line to message if it doesn't start with one.

  if (message.empty() || message[0] != '\n') {

    std::cout << "\n";

  }

  std::cout << message;

  if (stack_frames_to_skip >= 0) {

#ifdef NDEBUG

    // In opt mode, we have to be conservative and skip no stack frame.

    const int actual_to_skip = 0;

#else

    // In dbg mode, we can do what the caller tell us to do (plus one

    // for skipping this function's stack frame).

    const int actual_to_skip = stack_frames_to_skip + 1;

#endif  // NDEBUG

    // Appends a new-line to message if it doesn't end with one.

    if (!message.empty() && *message.rbegin() != '\n') {

      std::cout << "\n";

    }

    std::cout << "Stack trace:\n"

         << ::testing::internal::GetCurrentOsStackTraceExceptTop(

             ::testing::UnitTest::GetInstance(), actual_to_skip);

  }

  std::cout << ::std::flush;

}

GTEST_API_ WithoutMatchers GetWithoutMatchers() { return WithoutMatchers(); }

GTEST_API_ void IllegalDoDefault(const char* file, int line) {

  internal::Assert(

      false, file, line,

      "You are using DoDefault() inside a composite action like "

      "DoAll() or WithArgs().  This is not supported for technical "

      "reasons.  Please instead spell out the default action, or "

      "assign the default action to an Action variable and use "

      "the variable in various places.");

}

}  // namespace internal

}  // namespace testing