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Finishes SafeMatcherCast by catching lossy arithmetic conversions at compile-time; uses ACTION_TEMPLATE to simplify the definition of many actions; makes mock object uncopyable; teaches gmock doctor about wrong MOCK_METHODn.

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zhanyong.wan
2009-05-14 20:55:30 +00:00
parent c6a412397b
commit 16cf473930
9 changed files with 617 additions and 954 deletions
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290
include/gmock/gmock-generated-actions.h.pump
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@@ -198,77 +198,6 @@ $var Ts = [[$for j, [[T$j]]]]
}; // class CallableHelper
// Invokes a nullary callable argument.
template <size_t N>
class InvokeArgumentAction0 {
public:
template <typename Result, typename ArgumentTuple>
static Result Perform(const ArgumentTuple& args) {
return CallableHelper<Result>::Call(::std::tr1::get<N>(args));
}
};
// Invokes a unary callable argument with the given argument.
template <size_t N, typename A1>
class InvokeArgumentAction1 {
public:
// We deliberately pass a1 by value instead of const reference here
// in case it is a C-string literal.
//
// Since this function is defined inline, the compiler can get rid
// of the copying of the arguments. Therefore the performance won't
// be hurt.
explicit InvokeArgumentAction1(A1 a1) : arg1_(a1) {}
template <typename Result, typename ArgumentTuple>
Result Perform(const ArgumentTuple& args) {
return CallableHelper<Result>::Call(::std::tr1::get<N>(args), arg1_);
}
private:
const A1 arg1_;
};
$range i 2..n
$for i [[
$var arity = [[$if i==2 [[binary]] $elif i==3 [[ternary]] $else [[$i-ary]]]]
$range j 1..i
$var typename_As = [[$for j, [[typename A$j]]]]
$var args_ = [[$for j, [[arg$j[[]]_]]]]
// Invokes a $arity callable argument with the given arguments.
template <size_t N, $typename_As>
class InvokeArgumentAction$i {
public:
InvokeArgumentAction$i($for j, [[A$j a$j]]) :
$for j, [[arg$j[[]]_(a$j)]] {}
template <typename Result, typename ArgumentTuple>
Result Perform(const ArgumentTuple& args) {
$if i <= 4 [[
return CallableHelper<Result>::Call(::std::tr1::get<N>(args), $args_);
]] $else [[
// We extract the callable to a variable before invoking it, in
// case it is a functor passed by value and its operator() is not
// const.
typename ::std::tr1::tuple_element<N, ArgumentTuple>::type function =
::std::tr1::get<N>(args);
return function($args_);
]]
}
private:
$for j [[
const A$j arg$j[[]]_;
]]
};
]]
// An INTERNAL macro for extracting the type of a tuple field. It's
// subject to change without notice - DO NOT USE IN USER CODE!
#define GMOCK_FIELD_(Tuple, N) \
@@ -478,74 +407,6 @@ inline internal::ReferenceWrapper<T> ByRef(T& l_value) { // NOLINT
return internal::ReferenceWrapper<T>(l_value);
}
// Various overloads for InvokeArgument<N>().
//
// The InvokeArgument<N>(a1, a2, ..., a_k) action invokes the N-th
// (0-based) argument, which must be a k-ary callable, of the mock
// function, with arguments a1, a2, ..., a_k.
//
// Notes:
//
// 1. The arguments are passed by value by default. If you need to
// pass an argument by reference, wrap it inside ByRef(). For
// example,
//
// InvokeArgument<1>(5, string("Hello"), ByRef(foo))
//
// passes 5 and string("Hello") by value, and passes foo by
// reference.
//
// 2. If the callable takes an argument by reference but ByRef() is
// not used, it will receive the reference to a copy of the value,
// instead of the original value. For example, when the 0-th
// argument of the mock function takes a const string&, the action
//
// InvokeArgument<0>(string("Hello"))
//
// makes a copy of the temporary string("Hello") object and passes a
// reference of the copy, instead of the original temporary object,
// to the callable. This makes it easy for a user to define an
// InvokeArgument action from temporary values and have it performed
// later.
template <size_t N>
inline PolymorphicAction<internal::InvokeArgumentAction0<N> > InvokeArgument() {
return MakePolymorphicAction(internal::InvokeArgumentAction0<N>());
}
// We deliberately pass a1 by value instead of const reference here in
// case it is a C-string literal. If we had declared the parameter as
// 'const A1& a1' and write InvokeArgument<0>("Hi"), the compiler
// would've thought A1 is 'char[3]', which causes trouble as the
// implementation needs to copy a value of type A1. By declaring the
// parameter as 'A1 a1', the compiler will correctly infer that A1 is
// 'const char*' when it sees InvokeArgument<0>("Hi").
//
// Since this function is defined inline, the compiler can get rid of
// the copying of the arguments. Therefore the performance won't be
// hurt.
template <size_t N, typename A1>
inline PolymorphicAction<internal::InvokeArgumentAction1<N, A1> >
InvokeArgument(A1 a1) {
return MakePolymorphicAction(internal::InvokeArgumentAction1<N, A1>(a1));
}
$range i 2..n
$for i [[
$range j 1..i
$var typename_As = [[$for j, [[typename A$j]]]]
$var As = [[$for j, [[A$j]]]]
$var Aas = [[$for j, [[A$j a$j]]]]
$var as = [[$for j, [[a$j]]]]
template <size_t N, $typename_As>
inline PolymorphicAction<internal::InvokeArgumentAction$i<N, $As> >
InvokeArgument($Aas) {
return MakePolymorphicAction(
internal::InvokeArgumentAction$i<N, $As>($as));
}
]]
// WithoutArgs(inner_action) can be used in a mock function with a
// non-empty argument list to perform inner_action, which takes no
// argument. In other words, it adapts an action accepting no
@@ -1025,76 +886,89 @@ $$ // show up in the generated code.
// updated.
namespace testing {
namespace internal {
// Various overloads for InvokeArgument<N>().
//
// The InvokeArgument<N>(a1, a2, ..., a_k) action invokes the N-th
// (0-based) argument, which must be a k-ary callable, of the mock
// function, with arguments a1, a2, ..., a_k.
//
// Notes:
//
// 1. The arguments are passed by value by default. If you need to
// pass an argument by reference, wrap it inside ByRef(). For
// example,
//
// InvokeArgument<1>(5, string("Hello"), ByRef(foo))
//
// passes 5 and string("Hello") by value, and passes foo by
// reference.
//
// 2. If the callable takes an argument by reference but ByRef() is
// not used, it will receive the reference to a copy of the value,
// instead of the original value. For example, when the 0-th
// argument of the mock function takes a const string&, the action
//
// InvokeArgument<0>(string("Hello"))
//
// makes a copy of the temporary string("Hello") object and passes a
// reference of the copy, instead of the original temporary object,
// to the callable. This makes it easy for a user to define an
// InvokeArgument action from temporary values and have it performed
// later.
// Saves argument #0 to where the pointer points.
ACTION_P(SaveArg0, pointer) { *pointer = arg0; }
// Assigns 'value' to the variable referenced by argument #0.
ACTION_P(SetArg0Referee, value) {
// Ensures that argument #0 is a reference. If you get a compiler
// error on the next line, you are using SetArgReferee<k>(value) in
// a mock function whose k-th (0-based) argument is not a reference.
GMOCK_COMPILE_ASSERT_(internal::is_reference<arg0_type>::value,
SetArgReferee_must_be_used_with_a_reference_argument);
arg0 = value;
}
// ReturnNewAction<T> creates and returns a new instance of an object each time
// it is performed. It is overloaded to work with constructors that take
// different numbers of arguments.
$range i 0..n
$for i [[
$var arity = [[ $if i==0 [[nullary]]
$elif i==1 [[unary]]
$elif i==2 [[binary]]
$elif i==3 [[ternary]]
$else [[$i-ary]]]]
$range j 1..i
$var typename_As = [[$for j [[, typename A$j]]]]
$var args_ = [[$for j, [[arg$j[[]]_]]]]
$range j 0..i-1
// Returns a new instance of T using a $arity constructor with the given
// arguments.
template <typename T$typename_As>
class ReturnNewAction$i {
public:
$if i==1 [[explicit ]]ReturnNewAction$i($for j, [[A$j a$j]])$if i>0 [[ : ]]
$for j, [[arg$j[[]]_(a$j)]] {}
template <typename Result, typename ArgumentTuple>
Result Perform(const ArgumentTuple& /* args */) {
return new T($args_);
}
private:
$for j [[
const A$j arg$j[[]]_;
]]
};
ACTION_TEMPLATE(InvokeArgument,
HAS_1_TEMPLATE_PARAMS(int, k),
AND_$i[[]]_VALUE_PARAMS($for j, [[p$j]])) {
return internal::CallableHelper<return_type>::Call(
::std::tr1::get<k>(args)$for j [[, p$j]]);
}
]]
// Deletes the object pointed to by argument #0.
ACTION(DeleteArg0) { delete arg0; }
} // namespace internal
// Action SaveArg<k>(pointer) saves the k-th (0-based) argument of the
// mock function to *pointer.
template <int k, typename Pointer>
inline internal::WithArgsAction<internal::SaveArg0ActionP<Pointer>, k>
SaveArg(const Pointer& pointer) {
return WithArg<k>(internal::SaveArg0(pointer));
ACTION_TEMPLATE(SaveArg,
HAS_1_TEMPLATE_PARAMS(int, k),
AND_1_VALUE_PARAMS(pointer)) {
*pointer = ::std::tr1::get<k>(args);
}
// Action SetArgReferee<k>(value) assigns 'value' to the variable
// referenced by the k-th (0-based) argument of the mock function.
template <int k, typename Value>
inline internal::WithArgsAction<internal::SetArg0RefereeActionP<Value>, k>
SetArgReferee(const Value& value) {
return WithArg<k>(internal::SetArg0Referee(value));
ACTION_TEMPLATE(SetArgReferee,
HAS_1_TEMPLATE_PARAMS(int, k),
AND_1_VALUE_PARAMS(value)) {
typedef typename ::std::tr1::tuple_element<k, args_type>::type argk_type;
// Ensures that argument #k is a reference. If you get a compiler
// error on the next line, you are using SetArgReferee<k>(value) in
// a mock function whose k-th (0-based) argument is not a reference.
GMOCK_COMPILE_ASSERT_(internal::is_reference<argk_type>::value,
SetArgReferee_must_be_used_with_a_reference_argument);
::std::tr1::get<k>(args) = value;
}
// Action SetArrayArgument<k>(first, last) copies the elements in
// source range [first, last) to the array pointed to by the k-th
// (0-based) argument, which can be either a pointer or an
// iterator. The action does not take ownership of the elements in the
// source range.
ACTION_TEMPLATE(SetArrayArgument,
HAS_1_TEMPLATE_PARAMS(int, k),
AND_2_VALUE_PARAMS(first, last)) {
// Microsoft compiler deprecates ::std::copy, so we want to suppress warning
// 4996 (Function call with parameters that may be unsafe) there.
#ifdef _MSC_VER
#pragma warning(push) // Saves the current warning state.
#pragma warning(disable:4996) // Temporarily disables warning 4996.
#endif
::std::copy(first, last, ::std::tr1::get<k>(args));
#ifdef _MSC_VER
#pragma warning(pop) // Restores the warning state.
#endif
}
// Various overloads for ReturnNew<T>().
@@ -1104,27 +978,23 @@ SetArgReferee(const Value& value) {
// a1, a2, ..., and a_k. The caller assumes ownership of the returned value.
$range i 0..n
$for i [[
$range j 1..i
$var typename_As = [[$for j [[, typename A$j]]]]
$var As = [[$for j [[, A$j]]]]
$var Aas = [[$for j, [[A$j a$j]]]]
$var as = [[$for j, [[a$j]]]]
$range j 0..i-1
$var ps = [[$for j, [[p$j]]]]
template <typename T$typename_As>
inline PolymorphicAction<internal::ReturnNewAction$i<T$As> >
ReturnNew($Aas) {
return MakePolymorphicAction(
internal::ReturnNewAction$i<T$As>($as));
ACTION_TEMPLATE(ReturnNew,
HAS_1_TEMPLATE_PARAMS(typename, T),
AND_$i[[]]_VALUE_PARAMS($ps)) {
return new T($ps);
}
]]
// Action DeleteArg<k>() deletes the k-th (0-based) argument of the mock
// function.
template <int k>
inline internal::WithArgsAction<internal::DeleteArg0Action, k>
DeleteArg() {
return WithArg<k>(internal::DeleteArg0());
ACTION_TEMPLATE(DeleteArg,
HAS_1_TEMPLATE_PARAMS(int, k),
AND_0_VALUE_PARAMS()) {
delete ::std::tr1::get<k>(args);
}
// Action Throw(exception) can be used in a mock function of any type