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R9484/googlemock/src/gmock-internal-utils.cc
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gmock-internal-utils.cc
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// 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 iff 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 iff '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
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