diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/gtest/gtest-death-test.h | 51 | ||||
| -rw-r--r-- | include/gtest/internal/gtest-port.h | 41 |
2 files changed, 80 insertions, 12 deletions
diff --git a/include/gtest/gtest-death-test.h b/include/gtest/gtest-death-test.h index f0e109a3..1d4cf982 100644 --- a/include/gtest/gtest-death-test.h +++ b/include/gtest/gtest-death-test.h @@ -86,6 +86,57 @@ GTEST_DECLARE_string_(death_test_style); // // ASSERT_EXIT(client.HangUpServer(), KilledBySIGHUP, "Hanging up!"); // +// On the regular expressions used in death tests: +// +// On POSIX-compliant systems (*nix), we use the <regex.h> library, +// which uses the POSIX extended regex syntax. +// +// On other platforms (e.g. Windows), we only support a simple regex +// syntax implemented as part of Google Test. This limited +// implementation should be enough most of the time when writing +// death tests; though it lacks many features you can find in PCRE +// or POSIX extended regex syntax. For example, we don't support +// union ("x|y"), grouping ("(xy)"), brackets ("[xy]"), and +// repetition count ("x{5,7}"), among others. +// +// Below is the syntax that we do support. We chose it to be a +// subset of both PCRE and POSIX extended regex, so it's easy to +// learn wherever you come from. In the following: 'A' denotes a +// literal character, period (.), or a single \\ escape sequence; +// 'x' and 'y' denote regular expressions; 'm' and 'n' are for +// natural numbers. +// +// c matches any literal character c +// \\d matches any decimal digit +// \\D matches any character that's not a decimal digit +// \\f matches \f +// \\n matches \n +// \\r matches \r +// \\s matches any ASCII whitespace, including \n +// \\S matches any character that's not a whitespace +// \\t matches \t +// \\v matches \v +// \\w matches any letter, _, or decimal digit +// \\W matches any character that \\w doesn't match +// \\c matches any literal character c, which must be a punctuation +// . matches any single character except \n +// A? matches 0 or 1 occurrences of A +// A* matches 0 or many occurrences of A +// A+ matches 1 or many occurrences of A +// ^ matches the beginning of a string (not that of each line) +// $ matches the end of a string (not that of each line) +// xy matches x followed by y +// +// If you accidentally use PCRE or POSIX extended regex features +// not implemented by us, you will get a run-time failure. In that +// case, please try to rewrite your regular expression within the +// above syntax. +// +// This implementation is *not* meant to be as highly tuned or robust +// as a compiled regex library, but should perform well enough for a +// death test, which already incurs significant overhead by launching +// a child process. +// // Known caveats: // // A "threadsafe" style death test obtains the path to the test diff --git a/include/gtest/internal/gtest-port.h b/include/gtest/internal/gtest-port.h index b3ffc882..96eb0abc 100644 --- a/include/gtest/internal/gtest-port.h +++ b/include/gtest/internal/gtest-port.h @@ -97,6 +97,9 @@ // GTEST_HAS_TYPED_TEST - defined iff typed tests are supported. // GTEST_HAS_TYPED_TEST_P - defined iff type-parameterized tests are // supported. +// GTEST_USES_POSIX_RE - defined iff enhanced POSIX regex is used. +// GTEST_USES_SIMPLE_RE - defined iff our own simple regex is used; +// the above two are mutually exclusive. // // Macros for basic C++ coding: // GTEST_AMBIGUOUS_ELSE_BLOCKER_ - for disabling a gcc warning. @@ -187,6 +190,23 @@ #define GTEST_OS_SOLARIS #endif // _MSC_VER +#if defined(GTEST_OS_LINUX) + +// On some platforms, <regex.h> needs someone to define size_t, and +// won't compile otherwise. We can #include it here as we already +// included <stdlib.h>, which is guaranteed to define size_t through +// <stddef.h>. +#include <regex.h> // NOLINT +#define GTEST_USES_POSIX_RE 1 + +#else + +// We are not on Linux, so <regex.h> may not be available. Use our +// own simple regex implementation instead. +#define GTEST_USES_SIMPLE_RE 1 + +#endif // GTEST_OS_LINUX + // Determines whether ::std::string and ::string are available. #ifndef GTEST_HAS_STD_STRING @@ -352,11 +372,6 @@ // Determines whether to support death tests. #if GTEST_HAS_STD_STRING && GTEST_HAS_CLONE #define GTEST_HAS_DEATH_TEST -// On some platforms, <regex.h> needs someone to define size_t, and -// won't compile otherwise. We can #include it here as we already -// included <stdlib.h>, which is guaranteed to define size_t through -// <stddef.h>. -#include <regex.h> #include <vector> #include <fcntl.h> #include <sys/mman.h> @@ -375,8 +390,8 @@ // Typed tests need <typeinfo> and variadic macros, which gcc and VC // 8.0+ support. #if defined(__GNUC__) || (_MSC_VER >= 1400) -#define GTEST_HAS_TYPED_TEST -#define GTEST_HAS_TYPED_TEST_P +#define GTEST_HAS_TYPED_TEST 1 +#define GTEST_HAS_TYPED_TEST_P 1 #endif // defined(__GNUC__) || (_MSC_VER >= 1400) // Determines whether to support Combine(). This only makes sense when @@ -490,8 +505,6 @@ class scoped_ptr { GTEST_DISALLOW_COPY_AND_ASSIGN_(scoped_ptr); }; -#ifdef GTEST_HAS_DEATH_TEST - // Defines RE. // A simple C++ wrapper for <regex.h>. It uses the POSIX Enxtended @@ -549,12 +562,16 @@ class RE { // String type here, in order to simplify dependencies between the // files. const char* pattern_; + bool is_valid_; +#if GTEST_USES_POSIX_RE regex_t full_regex_; // For FullMatch(). regex_t partial_regex_; // For PartialMatch(). - bool is_valid_; -}; +#else // GTEST_USES_SIMPLE_RE + const char* full_pattern_; // For FullMatch(); +#endif -#endif // GTEST_HAS_DEATH_TEST + GTEST_DISALLOW_COPY_AND_ASSIGN_(RE); +}; // Defines logging utilities: // GTEST_LOG_() - logs messages at the specified severity level. |