mirror of
https://github.com/triqs/dft_tools
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515 lines
20 KiB
C++
515 lines
20 KiB
C++
// Copyright 2007, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Google Mock - a framework for writing C++ mock classes.
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//
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// This file defines some utilities useful for implementing Google
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// Mock. They are subject to change without notice, so please DO NOT
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// USE THEM IN USER CODE.
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// GOOGLETEST_CM0002 DO NOT DELETE
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#ifndef GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_INTERNAL_UTILS_H_
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#define GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_INTERNAL_UTILS_H_
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#include <stdio.h>
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#include <ostream> // NOLINT
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#include <string>
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#include <type_traits>
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#include "gmock/internal/gmock-port.h"
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#include "gtest/gtest.h"
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namespace testing {
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template <typename>
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class Matcher;
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namespace internal {
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// Silence MSVC C4100 (unreferenced formal parameter) and
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// C4805('==': unsafe mix of type 'const int' and type 'const bool')
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#ifdef _MSC_VER
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# pragma warning(push)
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# pragma warning(disable:4100)
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# pragma warning(disable:4805)
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#endif
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// Joins a vector of strings as if they are fields of a tuple; returns
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// the joined string.
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GTEST_API_ std::string JoinAsTuple(const Strings& fields);
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// Converts an identifier name to a space-separated list of lower-case
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// words. Each maximum substring of the form [A-Za-z][a-z]*|\d+ is
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// treated as one word. For example, both "FooBar123" and
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// "foo_bar_123" are converted to "foo bar 123".
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GTEST_API_ std::string ConvertIdentifierNameToWords(const char* id_name);
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// PointeeOf<Pointer>::type is the type of a value pointed to by a
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// Pointer, which can be either a smart pointer or a raw pointer. The
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// following default implementation is for the case where Pointer is a
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// smart pointer.
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template <typename Pointer>
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struct PointeeOf {
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// Smart pointer classes define type element_type as the type of
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// their pointees.
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typedef typename Pointer::element_type type;
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};
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// This specialization is for the raw pointer case.
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template <typename T>
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struct PointeeOf<T*> { typedef T type; }; // NOLINT
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// GetRawPointer(p) returns the raw pointer underlying p when p is a
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// smart pointer, or returns p itself when p is already a raw pointer.
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// The following default implementation is for the smart pointer case.
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template <typename Pointer>
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inline const typename Pointer::element_type* GetRawPointer(const Pointer& p) {
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return p.get();
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}
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// This overloaded version is for the raw pointer case.
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template <typename Element>
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inline Element* GetRawPointer(Element* p) { return p; }
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// MSVC treats wchar_t as a native type usually, but treats it as the
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// same as unsigned short when the compiler option /Zc:wchar_t- is
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// specified. It defines _NATIVE_WCHAR_T_DEFINED symbol when wchar_t
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// is a native type.
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#if defined(_MSC_VER) && !defined(_NATIVE_WCHAR_T_DEFINED)
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// wchar_t is a typedef.
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#else
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# define GMOCK_WCHAR_T_IS_NATIVE_ 1
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#endif
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// In what follows, we use the term "kind" to indicate whether a type
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// is bool, an integer type (excluding bool), a floating-point type,
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// or none of them. This categorization is useful for determining
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// when a matcher argument type can be safely converted to another
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// type in the implementation of SafeMatcherCast.
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enum TypeKind {
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kBool, kInteger, kFloatingPoint, kOther
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};
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// KindOf<T>::value is the kind of type T.
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template <typename T> struct KindOf {
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enum { value = kOther }; // The default kind.
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};
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// This macro declares that the kind of 'type' is 'kind'.
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#define GMOCK_DECLARE_KIND_(type, kind) \
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template <> struct KindOf<type> { enum { value = kind }; }
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GMOCK_DECLARE_KIND_(bool, kBool);
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// All standard integer types.
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GMOCK_DECLARE_KIND_(char, kInteger);
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GMOCK_DECLARE_KIND_(signed char, kInteger);
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GMOCK_DECLARE_KIND_(unsigned char, kInteger);
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GMOCK_DECLARE_KIND_(short, kInteger); // NOLINT
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GMOCK_DECLARE_KIND_(unsigned short, kInteger); // NOLINT
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GMOCK_DECLARE_KIND_(int, kInteger);
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GMOCK_DECLARE_KIND_(unsigned int, kInteger);
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GMOCK_DECLARE_KIND_(long, kInteger); // NOLINT
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GMOCK_DECLARE_KIND_(unsigned long, kInteger); // NOLINT
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#if GMOCK_WCHAR_T_IS_NATIVE_
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GMOCK_DECLARE_KIND_(wchar_t, kInteger);
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#endif
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// Non-standard integer types.
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GMOCK_DECLARE_KIND_(Int64, kInteger);
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GMOCK_DECLARE_KIND_(UInt64, kInteger);
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// All standard floating-point types.
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GMOCK_DECLARE_KIND_(float, kFloatingPoint);
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GMOCK_DECLARE_KIND_(double, kFloatingPoint);
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GMOCK_DECLARE_KIND_(long double, kFloatingPoint);
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#undef GMOCK_DECLARE_KIND_
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// Evaluates to the kind of 'type'.
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#define GMOCK_KIND_OF_(type) \
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static_cast< ::testing::internal::TypeKind>( \
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::testing::internal::KindOf<type>::value)
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// Evaluates to true if integer type T is signed.
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#define GMOCK_IS_SIGNED_(T) (static_cast<T>(-1) < 0)
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// LosslessArithmeticConvertibleImpl<kFromKind, From, kToKind, To>::value
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// is true if arithmetic type From can be losslessly converted to
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// arithmetic type To.
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//
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// It's the user's responsibility to ensure that both From and To are
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// raw (i.e. has no CV modifier, is not a pointer, and is not a
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// reference) built-in arithmetic types, kFromKind is the kind of
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// From, and kToKind is the kind of To; the value is
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// implementation-defined when the above pre-condition is violated.
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template <TypeKind kFromKind, typename From, TypeKind kToKind, typename To>
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struct LosslessArithmeticConvertibleImpl : public std::false_type {};
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// Converting bool to bool is lossless.
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template <>
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struct LosslessArithmeticConvertibleImpl<kBool, bool, kBool, bool>
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: public std::true_type {};
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// Converting bool to any integer type is lossless.
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template <typename To>
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struct LosslessArithmeticConvertibleImpl<kBool, bool, kInteger, To>
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: public std::true_type {};
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// Converting bool to any floating-point type is lossless.
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template <typename To>
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struct LosslessArithmeticConvertibleImpl<kBool, bool, kFloatingPoint, To>
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: public std::true_type {};
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// Converting an integer to bool is lossy.
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template <typename From>
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struct LosslessArithmeticConvertibleImpl<kInteger, From, kBool, bool>
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: public std::false_type {};
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// Converting an integer to another non-bool integer is lossless if
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// the target type's range encloses the source type's range.
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template <typename From, typename To>
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struct LosslessArithmeticConvertibleImpl<kInteger, From, kInteger, To>
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: public bool_constant<
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// When converting from a smaller size to a larger size, we are
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// fine as long as we are not converting from signed to unsigned.
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((sizeof(From) < sizeof(To)) &&
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(!GMOCK_IS_SIGNED_(From) || GMOCK_IS_SIGNED_(To))) ||
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// When converting between the same size, the signedness must match.
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((sizeof(From) == sizeof(To)) &&
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(GMOCK_IS_SIGNED_(From) == GMOCK_IS_SIGNED_(To)))> {}; // NOLINT
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#undef GMOCK_IS_SIGNED_
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// Converting an integer to a floating-point type may be lossy, since
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// the format of a floating-point number is implementation-defined.
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template <typename From, typename To>
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struct LosslessArithmeticConvertibleImpl<kInteger, From, kFloatingPoint, To>
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: public std::false_type {};
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// Converting a floating-point to bool is lossy.
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template <typename From>
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struct LosslessArithmeticConvertibleImpl<kFloatingPoint, From, kBool, bool>
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: public std::false_type {};
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// Converting a floating-point to an integer is lossy.
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template <typename From, typename To>
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struct LosslessArithmeticConvertibleImpl<kFloatingPoint, From, kInteger, To>
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: public std::false_type {};
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// Converting a floating-point to another floating-point is lossless
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// if the target type is at least as big as the source type.
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template <typename From, typename To>
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struct LosslessArithmeticConvertibleImpl<
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kFloatingPoint, From, kFloatingPoint, To>
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: public bool_constant<sizeof(From) <= sizeof(To)> {}; // NOLINT
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// LosslessArithmeticConvertible<From, To>::value is true if arithmetic
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// type From can be losslessly converted to arithmetic type To.
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//
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// It's the user's responsibility to ensure that both From and To are
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// raw (i.e. has no CV modifier, is not a pointer, and is not a
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// reference) built-in arithmetic types; the value is
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// implementation-defined when the above pre-condition is violated.
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template <typename From, typename To>
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struct LosslessArithmeticConvertible
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: public LosslessArithmeticConvertibleImpl<
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GMOCK_KIND_OF_(From), From, GMOCK_KIND_OF_(To), To> {}; // NOLINT
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// This interface knows how to report a Google Mock failure (either
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// non-fatal or fatal).
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class FailureReporterInterface {
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public:
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// The type of a failure (either non-fatal or fatal).
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enum FailureType {
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kNonfatal, kFatal
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};
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virtual ~FailureReporterInterface() {}
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// Reports a failure that occurred at the given source file location.
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virtual void ReportFailure(FailureType type, const char* file, int line,
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const std::string& message) = 0;
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};
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// Returns the failure reporter used by Google Mock.
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GTEST_API_ FailureReporterInterface* GetFailureReporter();
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// Asserts that condition is true; aborts the process with the given
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// message if condition is false. We cannot use LOG(FATAL) or CHECK()
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// as Google Mock might be used to mock the log sink itself. We
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// inline this function to prevent it from showing up in the stack
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// trace.
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inline void Assert(bool condition, const char* file, int line,
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const std::string& msg) {
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if (!condition) {
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GetFailureReporter()->ReportFailure(FailureReporterInterface::kFatal,
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file, line, msg);
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}
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}
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inline void Assert(bool condition, const char* file, int line) {
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Assert(condition, file, line, "Assertion failed.");
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}
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// Verifies that condition is true; generates a non-fatal failure if
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// condition is false.
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inline void Expect(bool condition, const char* file, int line,
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const std::string& msg) {
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if (!condition) {
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GetFailureReporter()->ReportFailure(FailureReporterInterface::kNonfatal,
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file, line, msg);
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}
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}
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inline void Expect(bool condition, const char* file, int line) {
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Expect(condition, file, line, "Expectation failed.");
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}
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// Severity level of a log.
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enum LogSeverity {
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kInfo = 0,
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kWarning = 1
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};
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// Valid values for the --gmock_verbose flag.
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// All logs (informational and warnings) are printed.
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const char kInfoVerbosity[] = "info";
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// Only warnings are printed.
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const char kWarningVerbosity[] = "warning";
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// No logs are printed.
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const char kErrorVerbosity[] = "error";
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// Returns true if a log with the given severity is visible according
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// to the --gmock_verbose flag.
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GTEST_API_ bool LogIsVisible(LogSeverity severity);
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// Prints the given message to stdout if 'severity' >= the level
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// specified by the --gmock_verbose flag. If stack_frames_to_skip >=
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// 0, also prints the stack trace excluding the top
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// stack_frames_to_skip frames. In opt mode, any positive
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// stack_frames_to_skip is treated as 0, since we don't know which
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// function calls will be inlined by the compiler and need to be
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// conservative.
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GTEST_API_ void Log(LogSeverity severity, const std::string& message,
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int stack_frames_to_skip);
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// A marker class that is used to resolve parameterless expectations to the
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// correct overload. This must not be instantiable, to prevent client code from
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// accidentally resolving to the overload; for example:
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//
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// ON_CALL(mock, Method({}, nullptr))...
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//
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class WithoutMatchers {
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private:
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WithoutMatchers() {}
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friend GTEST_API_ WithoutMatchers GetWithoutMatchers();
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};
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// Internal use only: access the singleton instance of WithoutMatchers.
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GTEST_API_ WithoutMatchers GetWithoutMatchers();
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// Type traits.
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// Disable MSVC warnings for infinite recursion, since in this case the
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// the recursion is unreachable.
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#ifdef _MSC_VER
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# pragma warning(push)
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# pragma warning(disable:4717)
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#endif
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// Invalid<T>() is usable as an expression of type T, but will terminate
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// the program with an assertion failure if actually run. This is useful
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// when a value of type T is needed for compilation, but the statement
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// will not really be executed (or we don't care if the statement
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// crashes).
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template <typename T>
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inline T Invalid() {
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Assert(false, "", -1, "Internal error: attempt to return invalid value");
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// This statement is unreachable, and would never terminate even if it
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// could be reached. It is provided only to placate compiler warnings
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// about missing return statements.
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return Invalid<T>();
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}
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#ifdef _MSC_VER
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# pragma warning(pop)
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#endif
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// Given a raw type (i.e. having no top-level reference or const
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// modifier) RawContainer that's either an STL-style container or a
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// native array, class StlContainerView<RawContainer> has the
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// following members:
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//
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// - type is a type that provides an STL-style container view to
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// (i.e. implements the STL container concept for) RawContainer;
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// - const_reference is a type that provides a reference to a const
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// RawContainer;
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// - ConstReference(raw_container) returns a const reference to an STL-style
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// container view to raw_container, which is a RawContainer.
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// - Copy(raw_container) returns an STL-style container view of a
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// copy of raw_container, which is a RawContainer.
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//
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// This generic version is used when RawContainer itself is already an
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// STL-style container.
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template <class RawContainer>
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class StlContainerView {
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public:
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typedef RawContainer type;
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typedef const type& const_reference;
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static const_reference ConstReference(const RawContainer& container) {
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// Ensures that RawContainer is not a const type.
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testing::StaticAssertTypeEq<
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RawContainer, typename std::remove_const<RawContainer>::type>();
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return container;
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}
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static type Copy(const RawContainer& container) { return container; }
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};
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// This specialization is used when RawContainer is a native array type.
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template <typename Element, size_t N>
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class StlContainerView<Element[N]> {
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public:
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typedef typename std::remove_const<Element>::type RawElement;
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typedef internal::NativeArray<RawElement> type;
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// NativeArray<T> can represent a native array either by value or by
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// reference (selected by a constructor argument), so 'const type'
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// can be used to reference a const native array. We cannot
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// 'typedef const type& const_reference' here, as that would mean
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// ConstReference() has to return a reference to a local variable.
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typedef const type const_reference;
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static const_reference ConstReference(const Element (&array)[N]) {
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// Ensures that Element is not a const type.
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testing::StaticAssertTypeEq<Element, RawElement>();
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return type(array, N, RelationToSourceReference());
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}
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static type Copy(const Element (&array)[N]) {
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return type(array, N, RelationToSourceCopy());
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}
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};
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// This specialization is used when RawContainer is a native array
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// represented as a (pointer, size) tuple.
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template <typename ElementPointer, typename Size>
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class StlContainerView< ::std::tuple<ElementPointer, Size> > {
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public:
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typedef typename std::remove_const<
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typename internal::PointeeOf<ElementPointer>::type>::type RawElement;
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typedef internal::NativeArray<RawElement> type;
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typedef const type const_reference;
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static const_reference ConstReference(
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const ::std::tuple<ElementPointer, Size>& array) {
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return type(std::get<0>(array), std::get<1>(array),
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RelationToSourceReference());
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}
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static type Copy(const ::std::tuple<ElementPointer, Size>& array) {
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return type(std::get<0>(array), std::get<1>(array), RelationToSourceCopy());
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}
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};
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// The following specialization prevents the user from instantiating
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// StlContainer with a reference type.
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template <typename T> class StlContainerView<T&>;
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// A type transform to remove constness from the first part of a pair.
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// Pairs like that are used as the value_type of associative containers,
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// and this transform produces a similar but assignable pair.
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template <typename T>
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struct RemoveConstFromKey {
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typedef T type;
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};
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// Partially specialized to remove constness from std::pair<const K, V>.
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template <typename K, typename V>
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struct RemoveConstFromKey<std::pair<const K, V> > {
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typedef std::pair<K, V> type;
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};
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// Emit an assertion failure due to incorrect DoDefault() usage. Out-of-lined to
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// reduce code size.
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GTEST_API_ void IllegalDoDefault(const char* file, int line);
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template <typename F, typename Tuple, size_t... Idx>
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auto ApplyImpl(F&& f, Tuple&& args, IndexSequence<Idx...>) -> decltype(
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std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...)) {
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return std::forward<F>(f)(std::get<Idx>(std::forward<Tuple>(args))...);
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}
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// Apply the function to a tuple of arguments.
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template <typename F, typename Tuple>
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auto Apply(F&& f, Tuple&& args)
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-> decltype(ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args),
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MakeIndexSequence<std::tuple_size<Tuple>::value>())) {
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|
return ApplyImpl(std::forward<F>(f), std::forward<Tuple>(args),
|
|
MakeIndexSequence<std::tuple_size<Tuple>::value>());
|
|
}
|
|
|
|
// Template struct Function<F>, where F must be a function type, contains
|
|
// the following typedefs:
|
|
//
|
|
// Result: the function's return type.
|
|
// Arg<N>: the type of the N-th argument, where N starts with 0.
|
|
// ArgumentTuple: the tuple type consisting of all parameters of F.
|
|
// ArgumentMatcherTuple: the tuple type consisting of Matchers for all
|
|
// parameters of F.
|
|
// MakeResultVoid: the function type obtained by substituting void
|
|
// for the return type of F.
|
|
// MakeResultIgnoredValue:
|
|
// the function type obtained by substituting Something
|
|
// for the return type of F.
|
|
template <typename T>
|
|
struct Function;
|
|
|
|
template <typename R, typename... Args>
|
|
struct Function<R(Args...)> {
|
|
using Result = R;
|
|
static constexpr size_t ArgumentCount = sizeof...(Args);
|
|
template <size_t I>
|
|
using Arg = ElemFromList<I, typename MakeIndexSequence<sizeof...(Args)>::type,
|
|
Args...>;
|
|
using ArgumentTuple = std::tuple<Args...>;
|
|
using ArgumentMatcherTuple = std::tuple<Matcher<Args>...>;
|
|
using MakeResultVoid = void(Args...);
|
|
using MakeResultIgnoredValue = IgnoredValue(Args...);
|
|
};
|
|
|
|
template <typename R, typename... Args>
|
|
constexpr size_t Function<R(Args...)>::ArgumentCount;
|
|
|
|
#ifdef _MSC_VER
|
|
# pragma warning(pop)
|
|
#endif
|
|
|
|
} // namespace internal
|
|
} // namespace testing
|
|
|
|
#endif // GMOCK_INCLUDE_GMOCK_INTERNAL_GMOCK_INTERNAL_UTILS_H_
|