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Implements custom description string for MATCHER*.

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This commit is contained in:
zhanyong.wan
2009-02-19 00:36:44 +00:00
parent e0d051ea64
commit 4a5330d3d6
7 changed files with 1029 additions and 290 deletions
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501
include/gmock/gmock-generated-matchers.h
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@@ -40,18 +40,11 @@
#include <string>
#include <vector>
#include <gmock/gmock-matchers.h>
#include <gmock/gmock-printers.h>
namespace testing {
namespace internal {
// Generates a non-fatal failure iff 'description' is not a valid
// matcher description.
inline void ValidateMatcherDescription(const char* description) {
EXPECT_STREQ("", description)
<< "The description string in a MATCHER*() macro must be \"\" "
"at this moment. We will implement custom description string soon.";
}
// Implements ElementsAre() and ElementsAreArray().
template <typename Container>
class ElementsAreMatcherImpl : public MatcherInterface<Container> {
@@ -674,10 +667,18 @@ ElementsAreArray(const T (&array)[N]) {
//
// will define a matcher with the given name that executes the
// statements, which must return a bool to indicate if the match
// succeeds. For now, the description_string must be "", but we'll
// allow other values soon. Inside the statements, you can refer to
// the value being matched by 'arg', and refer to its type by
// 'arg_type'. For example:
// succeeds. Inside the statements, you can refer to the value being
// matched by 'arg', and refer to its type by 'arg_type'.
//
// The description string documents what the matcher does, and is used
// to generate the failure message when the match fails. Since a
// MATCHER() is usually defined in a header file shared by multiple
// C++ source files, we require the description to be a C-string
// literal to avoid possible side effects. It can be empty, in which
// case we'll use the sequence of words in the matcher name as the
// description.
//
// For example:
//
// MATCHER(IsEven, "") { return (arg % 2) == 0; }
//
@@ -740,6 +741,38 @@ ElementsAreArray(const T (&array)[N]) {
// We also provide MATCHER_P2, MATCHER_P3, ..., up to MATCHER_P10 to
// support multi-parameter matchers.
//
// When defining a parameterized matcher, you can use Python-style
// interpolations in the description string to refer to the parameter
// values. We support the following syntax currently:
//
// %% a single '%' character
// %(*)s all parameters of the matcher printed as a tuple
// %(foo)s value of the matcher parameter named 'foo'
//
// For example,
//
// MATCHER_P2(InClosedRange, low, hi, "is in range [%(low)s, %(hi)s]") {
// return low <= arg && arg <= hi;
// }
// ...
// EXPECT_THAT(3, InClosedRange(4, 6));
//
// would generate a failure that contains the message:
//
// Expected: is in range [4, 6]
//
// If you specify "" as the description, the failure message will
// contain the sequence of words in the matcher name followed by the
// parameter values printed as a tuple. For example,
//
// MATCHER_P2(InClosedRange, low, hi, "") { ... }
// ...
// EXPECT_THAT(3, InClosedRange(4, 6));
//
// would generate a failure that contains the text:
//
// Expected: in closed range (4, 6)
//
// For the purpose of typing, you can view
//
// MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
@@ -796,25 +829,77 @@ ElementsAreArray(const T (&array)[N]) {
// To learn more about using these macros, please search for 'MATCHER'
// on http://code.google.com/p/googlemock/wiki/CookBook.
namespace testing {
namespace internal {
// Constants denoting interpolations in a matcher description string.
const int kTupleInterpolation = -1; // "%(*)s"
const int kPercentInterpolation = -2; // "%%"
const int kInvalidInterpolation = -3; // "%" followed by invalid text
// Records the location and content of an interpolation.
struct Interpolation {
Interpolation(const char* start, const char* end, int param)
: start_pos(start), end_pos(end), param_index(param) {}
// Points to the start of the interpolation (the '%' character).
const char* start_pos;
// Points to the first character after the interpolation.
const char* end_pos;
// 0-based index of the interpolated matcher parameter;
// kTupleInterpolation for "%(*)s"; kPercentInterpolation for "%%".
int param_index;
};
typedef ::std::vector<Interpolation> Interpolations;
// Parses a matcher description string and returns a vector of
// interpolations that appear in the string; generates non-fatal
// failures iff 'description' is an invalid matcher description.
// 'param_names' is a NULL-terminated array of parameter names in the
// order they appear in the MATCHER_P*() parameter list.
Interpolations ValidateMatcherDescription(
const char* param_names[], const char* description);
// Returns the actual matcher description, given the matcher name,
// user-supplied description template string, interpolations in the
// string, and the printed values of the matcher parameters.
string FormatMatcherDescription(
const char* matcher_name, const char* description,
const Interpolations& interp, const Strings& param_values);
} // namespace internal
} // namespace testing
#define MATCHER(name, description)\
class name##Matcher {\
public:\
template <typename arg_type>\
class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
public:\
gmock_Impl() {}\
gmock_Impl(const ::testing::internal::Interpolations& gmock_interp)\
: gmock_interp_(gmock_interp) {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<>());\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>());\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>(gmock_interp_));\
}\
name##Matcher() {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\
::testing::internal::Interpolations gmock_interp_;\
};\
inline name##Matcher name() {\
return name##Matcher();\
@@ -830,23 +915,32 @@ ElementsAreArray(const T (&array)[N]) {
template <typename arg_type>\
class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
public:\
explicit gmock_Impl(p0##_type gmock_p0) : p0(gmock_p0) {}\
explicit gmock_Impl(p0##_type gmock_p0, \
const ::testing::internal::Interpolations& gmock_interp)\
: p0(gmock_p0), gmock_interp_(gmock_interp) {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
*os << " ";\
::testing::internal::UniversalPrint(p0, os);\
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<p0##_type>(p0));\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\
p0##_type p0;\
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>(p0));\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>(p0, gmock_interp_));\
}\
name##MatcherP(p0##_type gmock_p0) : p0(gmock_p0) {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { #p0, NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\
p0##_type p0;\
::testing::internal::Interpolations gmock_interp_;\
};\
template <typename p0##_type>\
inline name##MatcherP<p0##_type> name(p0##_type p0) {\
@@ -864,30 +958,35 @@ ElementsAreArray(const T (&array)[N]) {
template <typename arg_type>\
class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
public:\
gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1) : p0(gmock_p0), \
p1(gmock_p1) {}\
gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, \
const ::testing::internal::Interpolations& gmock_interp)\
: p0(gmock_p0), p1(gmock_p1), gmock_interp_(gmock_interp) {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
*os << " (";\
::testing::internal::UniversalPrint(p0, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p1, os);\
*os << ")";\
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<p0##_type, p1##_type>(p0, p1));\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\
p0##_type p0;\
p1##_type p1;\
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>(p0, p1));\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>(p0, p1, gmock_interp_));\
}\
name##MatcherP2(p0##_type gmock_p0, p1##_type gmock_p1) : p0(gmock_p0), \
p1(gmock_p1) {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { #p0, #p1, NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\
p0##_type p0;\
p1##_type p1;\
::testing::internal::Interpolations gmock_interp_;\
};\
template <typename p0##_type, typename p1##_type>\
inline name##MatcherP2<p0##_type, p1##_type> name(p0##_type p0, \
@@ -906,35 +1005,39 @@ ElementsAreArray(const T (&array)[N]) {
template <typename arg_type>\
class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
public:\
gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, \
p2##_type gmock_p2) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2) {}\
gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
const ::testing::internal::Interpolations& gmock_interp)\
: p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
gmock_interp_(gmock_interp) {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
*os << " (";\
::testing::internal::UniversalPrint(p0, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p1, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p2, os);\
*os << ")";\
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<p0##_type, p1##_type, p2##_type>(p0, p1, \
p2));\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\
p0##_type p0;\
p1##_type p1;\
p2##_type p2;\
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>(p0, p1, \
p2));\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>(p0, p1, p2, gmock_interp_));\
}\
name##MatcherP3(p0##_type gmock_p0, p1##_type gmock_p1, \
p2##_type gmock_p2) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2) {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { #p0, #p1, #p2, NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\
p0##_type p0;\
p1##_type p1;\
p2##_type p2;\
::testing::internal::Interpolations gmock_interp_;\
};\
template <typename p0##_type, typename p1##_type, typename p2##_type>\
inline name##MatcherP3<p0##_type, p1##_type, p2##_type> name(p0##_type p0, \
@@ -955,40 +1058,42 @@ ElementsAreArray(const T (&array)[N]) {
class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
public:\
gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
p3##_type gmock_p3) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
p3(gmock_p3) {}\
p3##_type gmock_p3, \
const ::testing::internal::Interpolations& gmock_interp)\
: p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
gmock_interp_(gmock_interp) {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
*os << " (";\
::testing::internal::UniversalPrint(p0, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p1, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p2, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p3, os);\
*os << ")";\
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<p0##_type, p1##_type, p2##_type, \
p3##_type>(p0, p1, p2, p3));\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\
p0##_type p0;\
p1##_type p1;\
p2##_type p2;\
p3##_type p3;\
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>(p0, p1, \
p2, p3));\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>(p0, p1, p2, p3, gmock_interp_));\
}\
name##MatcherP4(p0##_type gmock_p0, p1##_type gmock_p1, \
p2##_type gmock_p2, p3##_type gmock_p3) : p0(gmock_p0), p1(gmock_p1), \
p2(gmock_p2), p3(gmock_p3) {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { #p0, #p1, #p2, #p3, NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\
p0##_type p0;\
p1##_type p1;\
p2##_type p2;\
p3##_type p3;\
::testing::internal::Interpolations gmock_interp_;\
};\
template <typename p0##_type, typename p1##_type, typename p2##_type, \
typename p3##_type>\
@@ -1013,45 +1118,45 @@ ElementsAreArray(const T (&array)[N]) {
class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
public:\
gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
p3##_type gmock_p3, p4##_type gmock_p4) : p0(gmock_p0), \
p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), p4(gmock_p4) {}\
p3##_type gmock_p3, p4##_type gmock_p4, \
const ::testing::internal::Interpolations& gmock_interp)\
: p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
p4(gmock_p4), gmock_interp_(gmock_interp) {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
*os << " (";\
::testing::internal::UniversalPrint(p0, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p1, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p2, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p3, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p4, os);\
*os << ")";\
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
p4##_type>(p0, p1, p2, p3, p4));\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\
p0##_type p0;\
p1##_type p1;\
p2##_type p2;\
p3##_type p3;\
p4##_type p4;\
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>(p0, p1, \
p2, p3, p4));\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, gmock_interp_));\
}\
name##MatcherP5(p0##_type gmock_p0, p1##_type gmock_p1, \
p2##_type gmock_p2, p3##_type gmock_p3, \
p4##_type gmock_p4) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
p3(gmock_p3), p4(gmock_p4) {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { #p0, #p1, #p2, #p3, #p4, NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\
p0##_type p0;\
p1##_type p1;\
p2##_type p2;\
p3##_type p3;\
p4##_type p4;\
::testing::internal::Interpolations gmock_interp_;\
};\
template <typename p0##_type, typename p1##_type, typename p2##_type, \
typename p3##_type, typename p4##_type>\
@@ -1076,25 +1181,18 @@ ElementsAreArray(const T (&array)[N]) {
class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
public:\
gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
p3##_type gmock_p3, p4##_type gmock_p4, \
p5##_type gmock_p5) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
p3(gmock_p3), p4(gmock_p4), p5(gmock_p5) {}\
p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
const ::testing::internal::Interpolations& gmock_interp)\
: p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
p4(gmock_p4), p5(gmock_p5), gmock_interp_(gmock_interp) {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
*os << " (";\
::testing::internal::UniversalPrint(p0, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p1, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p2, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p3, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p4, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p5, os);\
*os << ")";\
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
p4##_type, p5##_type>(p0, p1, p2, p3, p4, p5));\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\
p0##_type p0;\
p1##_type p1;\
@@ -1102,17 +1200,20 @@ ElementsAreArray(const T (&array)[N]) {
p3##_type p3;\
p4##_type p4;\
p5##_type p5;\
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>(p0, p1, \
p2, p3, p4, p5));\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, gmock_interp_));\
}\
name##MatcherP6(p0##_type gmock_p0, p1##_type gmock_p1, \
p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
p5##_type gmock_p5) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
p3(gmock_p3), p4(gmock_p4), p5(gmock_p5) {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { #p0, #p1, #p2, #p3, #p4, #p5, NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\
p0##_type p0;\
p1##_type p1;\
@@ -1120,6 +1221,7 @@ ElementsAreArray(const T (&array)[N]) {
p3##_type p3;\
p4##_type p4;\
p5##_type p5;\
::testing::internal::Interpolations gmock_interp_;\
};\
template <typename p0##_type, typename p1##_type, typename p2##_type, \
typename p3##_type, typename p4##_type, typename p5##_type>\
@@ -1147,26 +1249,20 @@ ElementsAreArray(const T (&array)[N]) {
public:\
gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
p6##_type gmock_p6) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6) {}\
p6##_type gmock_p6, \
const ::testing::internal::Interpolations& gmock_interp)\
: p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), \
gmock_interp_(gmock_interp) {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
*os << " (";\
::testing::internal::UniversalPrint(p0, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p1, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p2, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p3, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p4, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p5, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p6, os);\
*os << ")";\
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
p4##_type, p5##_type, p6##_type>(p0, p1, p2, p3, p4, p5, \
p6));\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\
p0##_type p0;\
p1##_type p1;\
@@ -1175,18 +1271,22 @@ ElementsAreArray(const T (&array)[N]) {
p4##_type p4;\
p5##_type p5;\
p6##_type p6;\
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>(p0, p1, \
p2, p3, p4, p5, p6));\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, gmock_interp_));\
}\
name##MatcherP7(p0##_type gmock_p0, p1##_type gmock_p1, \
p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
p5##_type gmock_p5, p6##_type gmock_p6) : p0(gmock_p0), p1(gmock_p1), \
p2(gmock_p2), p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), \
p6(gmock_p6) {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { #p0, #p1, #p2, #p3, #p4, #p5, #p6, \
NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\
p0##_type p0;\
p1##_type p1;\
@@ -1195,6 +1295,7 @@ ElementsAreArray(const T (&array)[N]) {
p4##_type p4;\
p5##_type p5;\
p6##_type p6;\
::testing::internal::Interpolations gmock_interp_;\
};\
template <typename p0##_type, typename p1##_type, typename p2##_type, \
typename p3##_type, typename p4##_type, typename p5##_type, \
@@ -1225,29 +1326,20 @@ ElementsAreArray(const T (&array)[N]) {
public:\
gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
p6##_type gmock_p6, p7##_type gmock_p7) : p0(gmock_p0), \
p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), p4(gmock_p4), \
p5(gmock_p5), p6(gmock_p6), p7(gmock_p7) {}\
p6##_type gmock_p6, p7##_type gmock_p7, \
const ::testing::internal::Interpolations& gmock_interp)\
: p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), p7(gmock_p7), \
gmock_interp_(gmock_interp) {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
*os << " (";\
::testing::internal::UniversalPrint(p0, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p1, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p2, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p3, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p4, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p5, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p6, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p7, os);\
*os << ")";\
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
p4##_type, p5##_type, p6##_type, p7##_type>(p0, p1, p2, \
p3, p4, p5, p6, p7));\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\
p0##_type p0;\
p1##_type p1;\
@@ -1257,11 +1349,13 @@ ElementsAreArray(const T (&array)[N]) {
p5##_type p5;\
p6##_type p6;\
p7##_type p7;\
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>(p0, p1, \
p2, p3, p4, p5, p6, p7));\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, p7, \
gmock_interp_));\
}\
name##MatcherP8(p0##_type gmock_p0, p1##_type gmock_p1, \
p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
@@ -1269,7 +1363,10 @@ ElementsAreArray(const T (&array)[N]) {
p7##_type gmock_p7) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), \
p7(gmock_p7) {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { #p0, #p1, #p2, #p3, #p4, #p5, #p6, \
#p7, NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\
p0##_type p0;\
p1##_type p1;\
@@ -1279,6 +1376,7 @@ ElementsAreArray(const T (&array)[N]) {
p5##_type p5;\
p6##_type p6;\
p7##_type p7;\
::testing::internal::Interpolations gmock_interp_;\
};\
template <typename p0##_type, typename p1##_type, typename p2##_type, \
typename p3##_type, typename p4##_type, typename p5##_type, \
@@ -1310,32 +1408,20 @@ ElementsAreArray(const T (&array)[N]) {
public:\
gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
p6##_type gmock_p6, p7##_type gmock_p7, \
p8##_type gmock_p8) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), \
p7(gmock_p7), p8(gmock_p8) {}\
p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8, \
const ::testing::internal::Interpolations& gmock_interp)\
: p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), p7(gmock_p7), \
p8(gmock_p8), gmock_interp_(gmock_interp) {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
*os << " (";\
::testing::internal::UniversalPrint(p0, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p1, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p2, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p3, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p4, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p5, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p6, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p7, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p8, os);\
*os << ")";\
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
p4##_type, p5##_type, p6##_type, p7##_type, \
p8##_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8));\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\
p0##_type p0;\
p1##_type p1;\
@@ -1346,11 +1432,13 @@ ElementsAreArray(const T (&array)[N]) {
p6##_type p6;\
p7##_type p7;\
p8##_type p8;\
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>(p0, p1, \
p2, p3, p4, p5, p6, p7, p8));\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8, \
gmock_interp_));\
}\
name##MatcherP9(p0##_type gmock_p0, p1##_type gmock_p1, \
p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
@@ -1358,7 +1446,10 @@ ElementsAreArray(const T (&array)[N]) {
p8##_type gmock_p8) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), p7(gmock_p7), \
p8(gmock_p8) {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { #p0, #p1, #p2, #p3, #p4, #p5, #p6, \
#p7, #p8, NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\
p0##_type p0;\
p1##_type p1;\
@@ -1369,6 +1460,7 @@ ElementsAreArray(const T (&array)[N]) {
p6##_type p6;\
p7##_type p7;\
p8##_type p8;\
::testing::internal::Interpolations gmock_interp_;\
};\
template <typename p0##_type, typename p1##_type, typename p2##_type, \
typename p3##_type, typename p4##_type, typename p5##_type, \
@@ -1403,33 +1495,20 @@ ElementsAreArray(const T (&array)[N]) {
gmock_Impl(p0##_type gmock_p0, p1##_type gmock_p1, p2##_type gmock_p2, \
p3##_type gmock_p3, p4##_type gmock_p4, p5##_type gmock_p5, \
p6##_type gmock_p6, p7##_type gmock_p7, p8##_type gmock_p8, \
p9##_type gmock_p9) : p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), \
p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), \
p7(gmock_p7), p8(gmock_p8), p9(gmock_p9) {}\
p9##_type gmock_p9, \
const ::testing::internal::Interpolations& gmock_interp)\
: p0(gmock_p0), p1(gmock_p1), p2(gmock_p2), p3(gmock_p3), \
p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), p7(gmock_p7), \
p8(gmock_p8), p9(gmock_p9), gmock_interp_(gmock_interp) {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
*os << " (";\
::testing::internal::UniversalPrint(p0, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p1, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p2, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p3, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p4, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p5, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p6, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p7, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p8, os);\
*os << ", ";\
::testing::internal::UniversalPrint(p9, os);\
*os << ")";\
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<p0##_type, p1##_type, p2##_type, p3##_type, \
p4##_type, p5##_type, p6##_type, p7##_type, p8##_type, \
p9##_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9));\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\
p0##_type p0;\
p1##_type p1;\
@@ -1441,11 +1520,13 @@ ElementsAreArray(const T (&array)[N]) {
p7##_type p7;\
p8##_type p8;\
p9##_type p9;\
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>(p0, p1, \
p2, p3, p4, p5, p6, p7, p8, p9));\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, \
gmock_interp_));\
}\
name##MatcherP10(p0##_type gmock_p0, p1##_type gmock_p1, \
p2##_type gmock_p2, p3##_type gmock_p3, p4##_type gmock_p4, \
@@ -1453,7 +1534,10 @@ ElementsAreArray(const T (&array)[N]) {
p8##_type gmock_p8, p9##_type gmock_p9) : p0(gmock_p0), p1(gmock_p1), \
p2(gmock_p2), p3(gmock_p3), p4(gmock_p4), p5(gmock_p5), p6(gmock_p6), \
p7(gmock_p7), p8(gmock_p8), p9(gmock_p9) {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { #p0, #p1, #p2, #p3, #p4, #p5, #p6, \
#p7, #p8, #p9, NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\
p0##_type p0;\
p1##_type p1;\
@@ -1465,6 +1549,7 @@ ElementsAreArray(const T (&array)[N]) {
p7##_type p7;\
p8##_type p8;\
p9##_type p9;\
::testing::internal::Interpolations gmock_interp_;\
};\
template <typename p0##_type, typename p1##_type, typename p2##_type, \
typename p3##_type, typename p4##_type, typename p5##_type, \

141
include/gmock/gmock-generated-matchers.h.pump
View File

@@ -43,18 +43,11 @@ $var n = 10 $$ The maximum arity we support.
#include <string>
#include <vector>
#include <gmock/gmock-matchers.h>
#include <gmock/gmock-printers.h>
namespace testing {
namespace internal {
// Generates a non-fatal failure iff 'description' is not a valid
// matcher description.
inline void ValidateMatcherDescription(const char* description) {
EXPECT_STREQ("", description)
<< "The description string in a MATCHER*() macro must be \"\" "
"at this moment. We will implement custom description string soon.";
}
// Implements ElementsAre() and ElementsAreArray().
template <typename Container>
class ElementsAreMatcherImpl : public MatcherInterface<Container> {
@@ -310,6 +303,9 @@ ElementsAreArray(const T (&array)[N]) {
}
} // namespace testing
$$ } // This Pump meta comment fixes auto-indentation in Emacs. It will not
$$ // show up in the generated code.
// The MATCHER* family of macros can be used in a namespace scope to
// define custom matchers easily. The syntax:
@@ -318,10 +314,18 @@ ElementsAreArray(const T (&array)[N]) {
//
// will define a matcher with the given name that executes the
// statements, which must return a bool to indicate if the match
// succeeds. For now, the description_string must be "", but we'll
// allow other values soon. Inside the statements, you can refer to
// the value being matched by 'arg', and refer to its type by
// 'arg_type'. For example:
// succeeds. Inside the statements, you can refer to the value being
// matched by 'arg', and refer to its type by 'arg_type'.
//
// The description string documents what the matcher does, and is used
// to generate the failure message when the match fails. Since a
// MATCHER() is usually defined in a header file shared by multiple
// C++ source files, we require the description to be a C-string
// literal to avoid possible side effects. It can be empty, in which
// case we'll use the sequence of words in the matcher name as the
// description.
//
// For example:
//
// MATCHER(IsEven, "") { return (arg % 2) == 0; }
//
@@ -384,6 +388,38 @@ ElementsAreArray(const T (&array)[N]) {
// We also provide MATCHER_P2, MATCHER_P3, ..., up to MATCHER_P$n to
// support multi-parameter matchers.
//
// When defining a parameterized matcher, you can use Python-style
// interpolations in the description string to refer to the parameter
// values. We support the following syntax currently:
//
// %% a single '%' character
// %(*)s all parameters of the matcher printed as a tuple
// %(foo)s value of the matcher parameter named 'foo'
//
// For example,
//
// MATCHER_P2(InClosedRange, low, hi, "is in range [%(low)s, %(hi)s]") {
// return low <= arg && arg <= hi;
// }
// ...
// EXPECT_THAT(3, InClosedRange(4, 6));
//
// would generate a failure that contains the message:
//
// Expected: is in range [4, 6]
//
// If you specify "" as the description, the failure message will
// contain the sequence of words in the matcher name followed by the
// parameter values printed as a tuple. For example,
//
// MATCHER_P2(InClosedRange, low, hi, "") { ... }
// ...
// EXPECT_THAT(3, InClosedRange(4, 6));
//
// would generate a failure that contains the text:
//
// Expected: in closed range (4, 6)
//
// For the purpose of typing, you can view
//
// MATCHER_Pk(Foo, p1, ..., pk, description_string) { ... }
@@ -440,6 +476,48 @@ ElementsAreArray(const T (&array)[N]) {
// To learn more about using these macros, please search for 'MATCHER'
// on http://code.google.com/p/googlemock/wiki/CookBook.
namespace testing {
namespace internal {
// Constants denoting interpolations in a matcher description string.
const int kTupleInterpolation = -1; // "%(*)s"
const int kPercentInterpolation = -2; // "%%"
const int kInvalidInterpolation = -3; // "%" followed by invalid text
// Records the location and content of an interpolation.
struct Interpolation {
Interpolation(const char* start, const char* end, int param)
: start_pos(start), end_pos(end), param_index(param) {}
// Points to the start of the interpolation (the '%' character).
const char* start_pos;
// Points to the first character after the interpolation.
const char* end_pos;
// 0-based index of the interpolated matcher parameter;
// kTupleInterpolation for "%(*)s"; kPercentInterpolation for "%%".
int param_index;
};
typedef ::std::vector<Interpolation> Interpolations;
// Parses a matcher description string and returns a vector of
// interpolations that appear in the string; generates non-fatal
// failures iff 'description' is an invalid matcher description.
// 'param_names' is a NULL-terminated array of parameter names in the
// order they appear in the MATCHER_P*() parameter list.
Interpolations ValidateMatcherDescription(
const char* param_names[], const char* description);
// Returns the actual matcher description, given the matcher name,
// user-supplied description template string, interpolations in the
// string, and the printed values of the matcher parameters.
string FormatMatcherDescription(
const char* matcher_name, const char* description,
const Interpolations& interp, const Strings& param_values);
} // namespace internal
} // namespace testing
$range i 0..n
$for i
@@ -454,7 +532,11 @@ $var template = [[$if i==0 [[]] $else [[
template <$for j, [[typename p$j##_type]]>\
]]]]
$var ctor_param_list = [[$for j, [[p$j##_type gmock_p$j]]]]
$var impl_ctor_param_list = [[$for j [[p$j##_type gmock_p$j, ]]
const ::testing::internal::Interpolations& gmock_interp]]
$var impl_inits = [[ : $for j [[p$j(gmock_p$j), ]]gmock_interp_(gmock_interp)]]
$var inits = [[$if i==0 [[]] $else [[ : $for j, [[p$j(gmock_p$j)]]]]]]
$var params_and_interp = [[$for j [[p$j, ]]gmock_interp_]]
$var params = [[$for j, [[p$j]]]]
$var param_types = [[$if i==0 [[]] $else [[<$for j, [[p$j##_type]]>]]]]
$var param_types_and_names = [[$for j, [[p$j##_type p$j]]]]
@@ -475,34 +557,29 @@ $var param_field_decls2 = [[$for j
template <typename arg_type>\
class gmock_Impl : public ::testing::MatcherInterface<arg_type> {\
public:\
[[$if i==1 [[explicit ]]]]gmock_Impl($ctor_param_list)$inits {}\
[[$if i==1 [[explicit ]]]]gmock_Impl($impl_ctor_param_list)\
$impl_inits {}\
virtual bool Matches(arg_type arg) const;\
virtual void DescribeTo(::std::ostream* os) const {\
*os << ::testing::internal::ConvertIdentifierNameToWords(#name);\
[[$if i==1 [[ *os << " ";\
::testing::internal::UniversalPrint(p0, os);\
]] $elif i>=2 [[ *os << " (";\
::testing::internal::UniversalPrint(p0, os);\
$range k 1..i-1
$for k [[
*os << ", ";\
::testing::internal::UniversalPrint(p$k, os);\
]]
*os << ")";\
]]]]
virtual void DescribeTo(::std::ostream* gmock_os) const {\
const ::testing::internal::Strings& gmock_printed_params = \
::testing::internal::UniversalTersePrintTupleFieldsToStrings(\
::std::tr1::tuple<$for j, [[p$j##_type]]>($for j, [[p$j]]));\
*gmock_os << ::testing::internal::FormatMatcherDescription(\
#name, description, gmock_interp_, gmock_printed_params);\
}\$param_field_decls
const ::testing::internal::Interpolations gmock_interp_;\
};\
template <typename arg_type>\
operator ::testing::Matcher<arg_type>() const {\
return ::testing::Matcher<arg_type>(new gmock_Impl<arg_type>($params));\
return ::testing::Matcher<arg_type>(\
new gmock_Impl<arg_type>($params_and_interp));\
}\
$class_name($ctor_param_list)$inits {\
::testing::internal::ValidateMatcherDescription(description);\
const char* gmock_param_names[] = { $for j [[#p$j, ]]NULL };\
gmock_interp_ = ::testing::internal::ValidateMatcherDescription(\
gmock_param_names, ("" description ""));\
}\$param_field_decls2
::testing::internal::Interpolations gmock_interp_;\
};\$template
inline $class_name$param_types name($param_types_and_names) {\
return $class_name$param_types($params);\

96
include/gmock/gmock-printers.h
View File

@@ -41,22 +41,36 @@
// type Foo by defining either operator<<(::std::ostream&, const Foo&)
// or void PrintTo(const Foo&, ::std::ostream*) in the namespace that
// defines Foo. If both are defined, PrintTo() takes precedence.
// When T is a reference type, the address of the value is also
//
// To aid debugging: when T is a reference type, the address of the
// value is also printed; when T is a (const) char pointer, both the
// pointer value and the NUL-terminated string it points to are
// printed.
//
// We also provide some convenient wrappers:
//
// // Prints to a string.
// string ::testing::internal::UniversalPrinter<T>::PrintAsString(value);
// // Prints a value using its inferred type.
// void ::testing::internal::UniversalPrint(const T& value, ostream*);
// // Prints a value as the given type to a string.
// string ::testing::internal::UniversalPrinter<T>::PrintToString(value);
//
// // Prints a value tersely: for a reference type, the referenced
// // value (but not the address) is printed; for a (const) char
// // pointer, the NUL-terminated string (but not the pointer) is
// // printed.
// void ::testing::internal::UniversalTersePrint(const T& value, ostream*);
//
// // Prints the fields of a tuple tersely to a string vector, one
// // element for each field.
// std::vector<string> UniversalTersePrintTupleFieldsToStrings(
// const Tuple& value);
#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_PRINTERS_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_PRINTERS_H_
#include <ostream> // NOLINT
#include <sstream>
#include <string>
#include <utility>
#include <vector>
#include <gmock/internal/gmock-internal-utils.h>
#include <gmock/internal/gmock-port.h>
@@ -350,13 +364,19 @@ inline void PrintTo(const ::std::wstring& s, ::std::ostream* os) {
// Overload for ::std::tr1::tuple. Needed for printing function
// arguments, which are packed as tuples.
// This helper template allows PrintTo() for tuples to be defined by
typedef ::std::vector<string> Strings;
// This helper template allows PrintTo() for tuples and
// UniversalTersePrintTupleFieldsToStrings() to be defined by
// induction on the number of tuple fields. The idea is that
// TuplePrefixPrinter<N>::PrintPrefixTo(t, os) prints the first N
// fields in tuple t, and can be defined in terms of
// TuplePrefixPrinter<N - 1>.
// The inductive case.
template <size_t N>
struct TuplePrefixPrinter {
// Prints the first N fields of a tuple.
template <typename Tuple>
static void PrintPrefixTo(const Tuple& t, ::std::ostream* os) {
TuplePrefixPrinter<N - 1>::PrintPrefixTo(t, os);
@@ -364,20 +384,33 @@ struct TuplePrefixPrinter {
UniversalPrinter<typename ::std::tr1::tuple_element<N - 1, Tuple>::type>
::Print(::std::tr1::get<N - 1>(t), os);
}
// Tersely prints the first N fields of a tuple to a string vector,
// one element for each field.
template <typename Tuple>
static void TersePrintPrefixToStrings(const Tuple& t, Strings* strings) {
TuplePrefixPrinter<N - 1>::TersePrintPrefixToStrings(t, strings);
::std::stringstream ss;
UniversalTersePrint(::std::tr1::get<N - 1>(t), &ss);
strings->push_back(ss.str());
}
};
// Base cases.
template <>
struct TuplePrefixPrinter<0> {
template <typename Tuple>
static void PrintPrefixTo(const Tuple&, ::std::ostream*) {}
template <typename Tuple>
static void TersePrintPrefixToStrings(const Tuple&, Strings*) {}
};
template <>
struct TuplePrefixPrinter<1> {
template <typename Tuple>
static void PrintPrefixTo(const Tuple& t, ::std::ostream* os) {
UniversalPrinter<typename ::std::tr1::tuple_element<0, Tuple>::type>::
Print(::std::tr1::get<0>(t), os);
}
};
template <typename Tuple>
void TuplePrefixPrinter<1>::PrintPrefixTo(const Tuple& t, ::std::ostream* os) {
UniversalPrinter<typename ::std::tr1::tuple_element<0, Tuple>::type>::
Print(::std::tr1::get<0>(t), os);
}
// Helper function for printing a tuple. T must be instantiated with
// a tuple type.
@@ -499,7 +532,7 @@ class UniversalPrinter {
// A convenient wrapper for Print() that returns the print-out as a
// string.
static string PrintAsString(const T& value) {
static string PrintToString(const T& value) {
::std::stringstream ss;
Print(value, &ss);
return ss.str();
@@ -548,7 +581,7 @@ class UniversalPrinter<T[N]> {
// A convenient wrapper for Print() that returns the print-out as a
// string.
static string PrintAsString(const T (&a)[N]) {
static string PrintToString(const T (&a)[N]) {
::std::stringstream ss;
Print(a, &ss);
return ss.str();
@@ -577,7 +610,7 @@ class UniversalPrinter<T&> {
// A convenient wrapper for Print() that returns the print-out as a
// string.
static string PrintAsString(const T& value) {
static string PrintToString(const T& value) {
::std::stringstream ss;
Print(value, &ss);
return ss.str();
@@ -588,15 +621,34 @@ class UniversalPrinter<T&> {
#endif // _MSC_VER
};
// Prints a value using its inferred type. In particular, if the
// original type of the value is a reference, the *referenced* type
// (as opposed to the reference type) will be used, as C++ doesn't
// infer reference types. This is useful when you just want to know
// what the value is and don't care if it's a reference or not.
// Prints a value tersely: for a reference type, the referenced value
// (but not the address) is printed; for a (const) char pointer, the
// NUL-terminated string (but not the pointer) is printed.
template <typename T>
void UniversalPrint(const T& value, ::std::ostream* os) {
void UniversalTersePrint(const T& value, ::std::ostream* os) {
UniversalPrinter<T>::Print(value, os);
}
inline void UniversalTersePrint(const char* str, ::std::ostream* os) {
if (str == NULL) {
*os << "NULL";
} else {
UniversalPrinter<string>::Print(string(str), os);
}
}
inline void UniversalTersePrint(char* str, ::std::ostream* os) {
UniversalTersePrint(static_cast<const char*>(str), os);
}
// Prints the fields of a tuple tersely to a string vector, one
// element for each field. See the comment before
// UniversalTersePrint() for how we define "tersely".
template <typename Tuple>
Strings UniversalTersePrintTupleFieldsToStrings(const Tuple& value) {
Strings result;
TuplePrefixPrinter< ::std::tr1::tuple_size<Tuple>::value>::
TersePrintPrefixToStrings(value, &result);
return result;
}
} // namespace internal
} // namespace testing