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https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136212 91177308-0d34-0410-b5e6-96231b3b80d8
797 lines
30 KiB
C++
797 lines
30 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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//
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// Author: wan@google.com (Zhanyong Wan)
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// Google Test - The Google C++ Testing Framework
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//
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// This file implements a universal value printer that can print a
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// value of any type T:
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//
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// void ::testing::internal::UniversalPrinter<T>::Print(value, ostream_ptr);
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//
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// A user can teach this function how to print a class type T by
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// defining either operator<<() or PrintTo() in the namespace that
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// defines T. More specifically, the FIRST defined function in the
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// following list will be used (assuming T is defined in namespace
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// foo):
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//
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// 1. foo::PrintTo(const T&, ostream*)
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// 2. operator<<(ostream&, const T&) defined in either foo or the
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// global namespace.
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//
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// If none of the above is defined, it will print the debug string of
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// the value if it is a protocol buffer, or print the raw bytes in the
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// value otherwise.
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//
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// To aid debugging: when T is a reference type, the address of the
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// value is also printed; when T is a (const) char pointer, both the
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// pointer value and the NUL-terminated string it points to are
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// printed.
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//
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// We also provide some convenient wrappers:
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//
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// // Prints a value to a string. For a (const or not) char
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// // pointer, the NUL-terminated string (but not the pointer) is
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// // printed.
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// std::string ::testing::PrintToString(const T& value);
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//
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// // Prints a value tersely: for a reference type, the referenced
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// // value (but not the address) is printed; for a (const or not) char
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// // pointer, the NUL-terminated string (but not the pointer) is
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// // printed.
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// void ::testing::internal::UniversalTersePrint(const T& value, ostream*);
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//
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// // Prints value using the type inferred by the compiler. The difference
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// // from UniversalTersePrint() is that this function prints both the
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// // pointer and the NUL-terminated string for a (const or not) char pointer.
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// void ::testing::internal::UniversalPrint(const T& value, ostream*);
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//
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// // Prints the fields of a tuple tersely to a string vector, one
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// // element for each field. Tuple support must be enabled in
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// // gtest-port.h.
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// std::vector<string> UniversalTersePrintTupleFieldsToStrings(
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// const Tuple& value);
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//
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// Known limitation:
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//
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// The print primitives print the elements of an STL-style container
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// using the compiler-inferred type of *iter where iter is a
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// const_iterator of the container. When const_iterator is an input
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// iterator but not a forward iterator, this inferred type may not
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// match value_type, and the print output may be incorrect. In
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// practice, this is rarely a problem as for most containers
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// const_iterator is a forward iterator. We'll fix this if there's an
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// actual need for it. Note that this fix cannot rely on value_type
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// being defined as many user-defined container types don't have
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// value_type.
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#ifndef GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
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#define GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
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#include <ostream> // NOLINT
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#include <sstream>
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#include <string>
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#include <utility>
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#include <vector>
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#include "gtest/internal/gtest-port.h"
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#include "gtest/internal/gtest-internal.h"
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namespace testing {
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// Definitions in the 'internal' and 'internal2' name spaces are
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// subject to change without notice. DO NOT USE THEM IN USER CODE!
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namespace internal2 {
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// Prints the given number of bytes in the given object to the given
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// ostream.
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GTEST_API_ void PrintBytesInObjectTo(const unsigned char* obj_bytes,
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size_t count,
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::std::ostream* os);
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// For selecting which printer to use when a given type has neither <<
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// nor PrintTo().
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enum TypeKind {
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kProtobuf, // a protobuf type
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kConvertibleToInteger, // a type implicitly convertible to BiggestInt
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// (e.g. a named or unnamed enum type)
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kOtherType // anything else
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};
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// TypeWithoutFormatter<T, kTypeKind>::PrintValue(value, os) is called
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// by the universal printer to print a value of type T when neither
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// operator<< nor PrintTo() is defined for T, where kTypeKind is the
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// "kind" of T as defined by enum TypeKind.
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template <typename T, TypeKind kTypeKind>
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class TypeWithoutFormatter {
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public:
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// This default version is called when kTypeKind is kOtherType.
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static void PrintValue(const T& value, ::std::ostream* os) {
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PrintBytesInObjectTo(reinterpret_cast<const unsigned char*>(&value),
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sizeof(value), os);
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}
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};
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// We print a protobuf using its ShortDebugString() when the string
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// doesn't exceed this many characters; otherwise we print it using
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// DebugString() for better readability.
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const size_t kProtobufOneLinerMaxLength = 50;
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template <typename T>
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class TypeWithoutFormatter<T, kProtobuf> {
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public:
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static void PrintValue(const T& value, ::std::ostream* os) {
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const ::testing::internal::string short_str = value.ShortDebugString();
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const ::testing::internal::string pretty_str =
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short_str.length() <= kProtobufOneLinerMaxLength ?
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short_str : ("\n" + value.DebugString());
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*os << ("<" + pretty_str + ">");
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}
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};
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template <typename T>
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class TypeWithoutFormatter<T, kConvertibleToInteger> {
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public:
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// Since T has no << operator or PrintTo() but can be implicitly
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// converted to BiggestInt, we print it as a BiggestInt.
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//
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// Most likely T is an enum type (either named or unnamed), in which
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// case printing it as an integer is the desired behavior. In case
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// T is not an enum, printing it as an integer is the best we can do
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// given that it has no user-defined printer.
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static void PrintValue(const T& value, ::std::ostream* os) {
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const internal::BiggestInt kBigInt = value;
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*os << kBigInt;
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}
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};
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// Prints the given value to the given ostream. If the value is a
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// protocol message, its debug string is printed; if it's an enum or
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// of a type implicitly convertible to BiggestInt, it's printed as an
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// integer; otherwise the bytes in the value are printed. This is
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// what UniversalPrinter<T>::Print() does when it knows nothing about
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// type T and T has neither << operator nor PrintTo().
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//
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// A user can override this behavior for a class type Foo by defining
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// a << operator in the namespace where Foo is defined.
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//
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// We put this operator in namespace 'internal2' instead of 'internal'
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// to simplify the implementation, as much code in 'internal' needs to
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// use << in STL, which would conflict with our own << were it defined
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// in 'internal'.
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//
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// Note that this operator<< takes a generic std::basic_ostream<Char,
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// CharTraits> type instead of the more restricted std::ostream. If
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// we define it to take an std::ostream instead, we'll get an
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// "ambiguous overloads" compiler error when trying to print a type
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// Foo that supports streaming to std::basic_ostream<Char,
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// CharTraits>, as the compiler cannot tell whether
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// operator<<(std::ostream&, const T&) or
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// operator<<(std::basic_stream<Char, CharTraits>, const Foo&) is more
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// specific.
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template <typename Char, typename CharTraits, typename T>
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::std::basic_ostream<Char, CharTraits>& operator<<(
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::std::basic_ostream<Char, CharTraits>& os, const T& x) {
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TypeWithoutFormatter<T,
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(internal::IsAProtocolMessage<T>::value ? kProtobuf :
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internal::ImplicitlyConvertible<const T&, internal::BiggestInt>::value ?
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kConvertibleToInteger : kOtherType)>::PrintValue(x, &os);
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return os;
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}
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} // namespace internal2
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} // namespace testing
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// This namespace MUST NOT BE NESTED IN ::testing, or the name look-up
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// magic needed for implementing UniversalPrinter won't work.
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namespace testing_internal {
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// Used to print a value that is not an STL-style container when the
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// user doesn't define PrintTo() for it.
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template <typename T>
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void DefaultPrintNonContainerTo(const T& value, ::std::ostream* os) {
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// With the following statement, during unqualified name lookup,
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// testing::internal2::operator<< appears as if it was declared in
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// the nearest enclosing namespace that contains both
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// ::testing_internal and ::testing::internal2, i.e. the global
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// namespace. For more details, refer to the C++ Standard section
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// 7.3.4-1 [namespace.udir]. This allows us to fall back onto
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// testing::internal2::operator<< in case T doesn't come with a <<
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// operator.
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//
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// We cannot write 'using ::testing::internal2::operator<<;', which
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// gcc 3.3 fails to compile due to a compiler bug.
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using namespace ::testing::internal2; // NOLINT
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// Assuming T is defined in namespace foo, in the next statement,
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// the compiler will consider all of:
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//
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// 1. foo::operator<< (thanks to Koenig look-up),
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// 2. ::operator<< (as the current namespace is enclosed in ::),
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// 3. testing::internal2::operator<< (thanks to the using statement above).
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//
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// The operator<< whose type matches T best will be picked.
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//
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// We deliberately allow #2 to be a candidate, as sometimes it's
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// impossible to define #1 (e.g. when foo is ::std, defining
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// anything in it is undefined behavior unless you are a compiler
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// vendor.).
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*os << value;
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}
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} // namespace testing_internal
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namespace testing {
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namespace internal {
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// UniversalPrinter<T>::Print(value, ostream_ptr) prints the given
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// value to the given ostream. The caller must ensure that
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// 'ostream_ptr' is not NULL, or the behavior is undefined.
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//
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// We define UniversalPrinter as a class template (as opposed to a
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// function template), as we need to partially specialize it for
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// reference types, which cannot be done with function templates.
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template <typename T>
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class UniversalPrinter;
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template <typename T>
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void UniversalPrint(const T& value, ::std::ostream* os);
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// Used to print an STL-style container when the user doesn't define
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// a PrintTo() for it.
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template <typename C>
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void DefaultPrintTo(IsContainer /* dummy */,
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false_type /* is not a pointer */,
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const C& container, ::std::ostream* os) {
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const size_t kMaxCount = 32; // The maximum number of elements to print.
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*os << '{';
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size_t count = 0;
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for (typename C::const_iterator it = container.begin();
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it != container.end(); ++it, ++count) {
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if (count > 0) {
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*os << ',';
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if (count == kMaxCount) { // Enough has been printed.
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*os << " ...";
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break;
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}
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}
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*os << ' ';
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// We cannot call PrintTo(*it, os) here as PrintTo() doesn't
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// handle *it being a native array.
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internal::UniversalPrint(*it, os);
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}
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if (count > 0) {
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*os << ' ';
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}
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*os << '}';
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}
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// Used to print a pointer that is neither a char pointer nor a member
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// pointer, when the user doesn't define PrintTo() for it. (A member
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// variable pointer or member function pointer doesn't really point to
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// a location in the address space. Their representation is
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// implementation-defined. Therefore they will be printed as raw
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// bytes.)
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template <typename T>
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void DefaultPrintTo(IsNotContainer /* dummy */,
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true_type /* is a pointer */,
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T* p, ::std::ostream* os) {
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if (p == NULL) {
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*os << "NULL";
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} else {
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// C++ doesn't allow casting from a function pointer to any object
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// pointer.
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//
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// IsTrue() silences warnings: "Condition is always true",
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// "unreachable code".
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if (IsTrue(ImplicitlyConvertible<T*, const void*>::value)) {
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// T is not a function type. We just call << to print p,
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// relying on ADL to pick up user-defined << for their pointer
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// types, if any.
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*os << p;
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} else {
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// T is a function type, so '*os << p' doesn't do what we want
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// (it just prints p as bool). We want to print p as a const
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// void*. However, we cannot cast it to const void* directly,
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// even using reinterpret_cast, as earlier versions of gcc
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// (e.g. 3.4.5) cannot compile the cast when p is a function
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// pointer. Casting to UInt64 first solves the problem.
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*os << reinterpret_cast<const void*>(
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reinterpret_cast<internal::UInt64>(p));
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}
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}
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}
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// Used to print a non-container, non-pointer value when the user
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// doesn't define PrintTo() for it.
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template <typename T>
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void DefaultPrintTo(IsNotContainer /* dummy */,
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false_type /* is not a pointer */,
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const T& value, ::std::ostream* os) {
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::testing_internal::DefaultPrintNonContainerTo(value, os);
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}
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// Prints the given value using the << operator if it has one;
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// otherwise prints the bytes in it. This is what
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// UniversalPrinter<T>::Print() does when PrintTo() is not specialized
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// or overloaded for type T.
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//
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// A user can override this behavior for a class type Foo by defining
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// an overload of PrintTo() in the namespace where Foo is defined. We
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// give the user this option as sometimes defining a << operator for
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// Foo is not desirable (e.g. the coding style may prevent doing it,
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// or there is already a << operator but it doesn't do what the user
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// wants).
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template <typename T>
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void PrintTo(const T& value, ::std::ostream* os) {
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// DefaultPrintTo() is overloaded. The type of its first two
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// arguments determine which version will be picked. If T is an
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// STL-style container, the version for container will be called; if
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// T is a pointer, the pointer version will be called; otherwise the
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// generic version will be called.
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//
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// Note that we check for container types here, prior to we check
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// for protocol message types in our operator<<. The rationale is:
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//
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// For protocol messages, we want to give people a chance to
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// override Google Mock's format by defining a PrintTo() or
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// operator<<. For STL containers, other formats can be
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// incompatible with Google Mock's format for the container
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// elements; therefore we check for container types here to ensure
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// that our format is used.
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//
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// The second argument of DefaultPrintTo() is needed to bypass a bug
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// in Symbian's C++ compiler that prevents it from picking the right
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// overload between:
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//
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// PrintTo(const T& x, ...);
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// PrintTo(T* x, ...);
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DefaultPrintTo(IsContainerTest<T>(0), is_pointer<T>(), value, os);
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}
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// The following list of PrintTo() overloads tells
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// UniversalPrinter<T>::Print() how to print standard types (built-in
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// types, strings, plain arrays, and pointers).
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// Overloads for various char types.
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GTEST_API_ void PrintTo(unsigned char c, ::std::ostream* os);
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GTEST_API_ void PrintTo(signed char c, ::std::ostream* os);
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inline void PrintTo(char c, ::std::ostream* os) {
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// When printing a plain char, we always treat it as unsigned. This
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// way, the output won't be affected by whether the compiler thinks
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// char is signed or not.
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PrintTo(static_cast<unsigned char>(c), os);
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}
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// Overloads for other simple built-in types.
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inline void PrintTo(bool x, ::std::ostream* os) {
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*os << (x ? "true" : "false");
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}
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// Overload for wchar_t type.
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// Prints a wchar_t as a symbol if it is printable or as its internal
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// code otherwise and also as its decimal code (except for L'\0').
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// The L'\0' char is printed as "L'\\0'". The decimal code is printed
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// as signed integer when wchar_t is implemented by the compiler
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// as a signed type and is printed as an unsigned integer when wchar_t
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// is implemented as an unsigned type.
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GTEST_API_ void PrintTo(wchar_t wc, ::std::ostream* os);
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// Overloads for C strings.
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GTEST_API_ void PrintTo(const char* s, ::std::ostream* os);
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inline void PrintTo(char* s, ::std::ostream* os) {
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PrintTo(ImplicitCast_<const char*>(s), os);
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}
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// signed/unsigned char is often used for representing binary data, so
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// we print pointers to it as void* to be safe.
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inline void PrintTo(const signed char* s, ::std::ostream* os) {
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PrintTo(ImplicitCast_<const void*>(s), os);
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}
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inline void PrintTo(signed char* s, ::std::ostream* os) {
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PrintTo(ImplicitCast_<const void*>(s), os);
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}
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inline void PrintTo(const unsigned char* s, ::std::ostream* os) {
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PrintTo(ImplicitCast_<const void*>(s), os);
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}
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inline void PrintTo(unsigned char* s, ::std::ostream* os) {
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PrintTo(ImplicitCast_<const void*>(s), os);
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}
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// MSVC can be configured to define wchar_t as a typedef of unsigned
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// short. It defines _NATIVE_WCHAR_T_DEFINED when wchar_t is a native
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// type. When wchar_t is a typedef, defining an overload for const
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// wchar_t* would cause unsigned short* be printed as a wide string,
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// possibly causing invalid memory accesses.
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#if !defined(_MSC_VER) || defined(_NATIVE_WCHAR_T_DEFINED)
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// Overloads for wide C strings
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GTEST_API_ void PrintTo(const wchar_t* s, ::std::ostream* os);
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inline void PrintTo(wchar_t* s, ::std::ostream* os) {
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PrintTo(ImplicitCast_<const wchar_t*>(s), os);
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}
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#endif
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// Overload for C arrays. Multi-dimensional arrays are printed
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// properly.
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// Prints the given number of elements in an array, without printing
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// the curly braces.
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template <typename T>
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void PrintRawArrayTo(const T a[], size_t count, ::std::ostream* os) {
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UniversalPrint(a[0], os);
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for (size_t i = 1; i != count; i++) {
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*os << ", ";
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|
UniversalPrint(a[i], os);
|
|
}
|
|
}
|
|
|
|
// Overloads for ::string and ::std::string.
|
|
#if GTEST_HAS_GLOBAL_STRING
|
|
GTEST_API_ void PrintStringTo(const ::string&s, ::std::ostream* os);
|
|
inline void PrintTo(const ::string& s, ::std::ostream* os) {
|
|
PrintStringTo(s, os);
|
|
}
|
|
#endif // GTEST_HAS_GLOBAL_STRING
|
|
|
|
GTEST_API_ void PrintStringTo(const ::std::string&s, ::std::ostream* os);
|
|
inline void PrintTo(const ::std::string& s, ::std::ostream* os) {
|
|
PrintStringTo(s, os);
|
|
}
|
|
|
|
// Overloads for ::wstring and ::std::wstring.
|
|
#if GTEST_HAS_GLOBAL_WSTRING
|
|
GTEST_API_ void PrintWideStringTo(const ::wstring&s, ::std::ostream* os);
|
|
inline void PrintTo(const ::wstring& s, ::std::ostream* os) {
|
|
PrintWideStringTo(s, os);
|
|
}
|
|
#endif // GTEST_HAS_GLOBAL_WSTRING
|
|
|
|
#if GTEST_HAS_STD_WSTRING
|
|
GTEST_API_ void PrintWideStringTo(const ::std::wstring&s, ::std::ostream* os);
|
|
inline void PrintTo(const ::std::wstring& s, ::std::ostream* os) {
|
|
PrintWideStringTo(s, os);
|
|
}
|
|
#endif // GTEST_HAS_STD_WSTRING
|
|
|
|
#if GTEST_HAS_TR1_TUPLE
|
|
// Overload for ::std::tr1::tuple. Needed for printing function arguments,
|
|
// which are packed as tuples.
|
|
|
|
// Helper function for printing a tuple. T must be instantiated with
|
|
// a tuple type.
|
|
template <typename T>
|
|
void PrintTupleTo(const T& t, ::std::ostream* os);
|
|
|
|
// Overloaded PrintTo() for tuples of various arities. We support
|
|
// tuples of up-to 10 fields. The following implementation works
|
|
// regardless of whether tr1::tuple is implemented using the
|
|
// non-standard variadic template feature or not.
|
|
|
|
inline void PrintTo(const ::std::tr1::tuple<>& t, ::std::ostream* os) {
|
|
PrintTupleTo(t, os);
|
|
}
|
|
|
|
template <typename T1>
|
|
void PrintTo(const ::std::tr1::tuple<T1>& t, ::std::ostream* os) {
|
|
PrintTupleTo(t, os);
|
|
}
|
|
|
|
template <typename T1, typename T2>
|
|
void PrintTo(const ::std::tr1::tuple<T1, T2>& t, ::std::ostream* os) {
|
|
PrintTupleTo(t, os);
|
|
}
|
|
|
|
template <typename T1, typename T2, typename T3>
|
|
void PrintTo(const ::std::tr1::tuple<T1, T2, T3>& t, ::std::ostream* os) {
|
|
PrintTupleTo(t, os);
|
|
}
|
|
|
|
template <typename T1, typename T2, typename T3, typename T4>
|
|
void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4>& t, ::std::ostream* os) {
|
|
PrintTupleTo(t, os);
|
|
}
|
|
|
|
template <typename T1, typename T2, typename T3, typename T4, typename T5>
|
|
void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5>& t,
|
|
::std::ostream* os) {
|
|
PrintTupleTo(t, os);
|
|
}
|
|
|
|
template <typename T1, typename T2, typename T3, typename T4, typename T5,
|
|
typename T6>
|
|
void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6>& t,
|
|
::std::ostream* os) {
|
|
PrintTupleTo(t, os);
|
|
}
|
|
|
|
template <typename T1, typename T2, typename T3, typename T4, typename T5,
|
|
typename T6, typename T7>
|
|
void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7>& t,
|
|
::std::ostream* os) {
|
|
PrintTupleTo(t, os);
|
|
}
|
|
|
|
template <typename T1, typename T2, typename T3, typename T4, typename T5,
|
|
typename T6, typename T7, typename T8>
|
|
void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7, T8>& t,
|
|
::std::ostream* os) {
|
|
PrintTupleTo(t, os);
|
|
}
|
|
|
|
template <typename T1, typename T2, typename T3, typename T4, typename T5,
|
|
typename T6, typename T7, typename T8, typename T9>
|
|
void PrintTo(const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9>& t,
|
|
::std::ostream* os) {
|
|
PrintTupleTo(t, os);
|
|
}
|
|
|
|
template <typename T1, typename T2, typename T3, typename T4, typename T5,
|
|
typename T6, typename T7, typename T8, typename T9, typename T10>
|
|
void PrintTo(
|
|
const ::std::tr1::tuple<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>& t,
|
|
::std::ostream* os) {
|
|
PrintTupleTo(t, os);
|
|
}
|
|
#endif // GTEST_HAS_TR1_TUPLE
|
|
|
|
// Overload for std::pair.
|
|
template <typename T1, typename T2>
|
|
void PrintTo(const ::std::pair<T1, T2>& value, ::std::ostream* os) {
|
|
*os << '(';
|
|
// We cannot use UniversalPrint(value.first, os) here, as T1 may be
|
|
// a reference type. The same for printing value.second.
|
|
UniversalPrinter<T1>::Print(value.first, os);
|
|
*os << ", ";
|
|
UniversalPrinter<T2>::Print(value.second, os);
|
|
*os << ')';
|
|
}
|
|
|
|
// Implements printing a non-reference type T by letting the compiler
|
|
// pick the right overload of PrintTo() for T.
|
|
template <typename T>
|
|
class UniversalPrinter {
|
|
public:
|
|
// MSVC warns about adding const to a function type, so we want to
|
|
// disable the warning.
|
|
#ifdef _MSC_VER
|
|
# pragma warning(push) // Saves the current warning state.
|
|
# pragma warning(disable:4180) // Temporarily disables warning 4180.
|
|
#endif // _MSC_VER
|
|
|
|
// Note: we deliberately don't call this PrintTo(), as that name
|
|
// conflicts with ::testing::internal::PrintTo in the body of the
|
|
// function.
|
|
static void Print(const T& value, ::std::ostream* os) {
|
|
// By default, ::testing::internal::PrintTo() is used for printing
|
|
// the value.
|
|
//
|
|
// Thanks to Koenig look-up, if T is a class and has its own
|
|
// PrintTo() function defined in its namespace, that function will
|
|
// be visible here. Since it is more specific than the generic ones
|
|
// in ::testing::internal, it will be picked by the compiler in the
|
|
// following statement - exactly what we want.
|
|
PrintTo(value, os);
|
|
}
|
|
|
|
#ifdef _MSC_VER
|
|
# pragma warning(pop) // Restores the warning state.
|
|
#endif // _MSC_VER
|
|
};
|
|
|
|
// UniversalPrintArray(begin, len, os) prints an array of 'len'
|
|
// elements, starting at address 'begin'.
|
|
template <typename T>
|
|
void UniversalPrintArray(const T* begin, size_t len, ::std::ostream* os) {
|
|
if (len == 0) {
|
|
*os << "{}";
|
|
} else {
|
|
*os << "{ ";
|
|
const size_t kThreshold = 18;
|
|
const size_t kChunkSize = 8;
|
|
// If the array has more than kThreshold elements, we'll have to
|
|
// omit some details by printing only the first and the last
|
|
// kChunkSize elements.
|
|
// TODO(wan@google.com): let the user control the threshold using a flag.
|
|
if (len <= kThreshold) {
|
|
PrintRawArrayTo(begin, len, os);
|
|
} else {
|
|
PrintRawArrayTo(begin, kChunkSize, os);
|
|
*os << ", ..., ";
|
|
PrintRawArrayTo(begin + len - kChunkSize, kChunkSize, os);
|
|
}
|
|
*os << " }";
|
|
}
|
|
}
|
|
// This overload prints a (const) char array compactly.
|
|
GTEST_API_ void UniversalPrintArray(const char* begin,
|
|
size_t len,
|
|
::std::ostream* os);
|
|
|
|
// Implements printing an array type T[N].
|
|
template <typename T, size_t N>
|
|
class UniversalPrinter<T[N]> {
|
|
public:
|
|
// Prints the given array, omitting some elements when there are too
|
|
// many.
|
|
static void Print(const T (&a)[N], ::std::ostream* os) {
|
|
UniversalPrintArray(a, N, os);
|
|
}
|
|
};
|
|
|
|
// Implements printing a reference type T&.
|
|
template <typename T>
|
|
class UniversalPrinter<T&> {
|
|
public:
|
|
// MSVC warns about adding const to a function type, so we want to
|
|
// disable the warning.
|
|
#ifdef _MSC_VER
|
|
# pragma warning(push) // Saves the current warning state.
|
|
# pragma warning(disable:4180) // Temporarily disables warning 4180.
|
|
#endif // _MSC_VER
|
|
|
|
static void Print(const T& value, ::std::ostream* os) {
|
|
// Prints the address of the value. We use reinterpret_cast here
|
|
// as static_cast doesn't compile when T is a function type.
|
|
*os << "@" << reinterpret_cast<const void*>(&value) << " ";
|
|
|
|
// Then prints the value itself.
|
|
UniversalPrint(value, os);
|
|
}
|
|
|
|
#ifdef _MSC_VER
|
|
# pragma warning(pop) // Restores the warning state.
|
|
#endif // _MSC_VER
|
|
};
|
|
|
|
// 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 UniversalTersePrint(const T& value, ::std::ostream* os) {
|
|
UniversalPrint(value, os);
|
|
}
|
|
inline void UniversalTersePrint(const char* str, ::std::ostream* os) {
|
|
if (str == NULL) {
|
|
*os << "NULL";
|
|
} else {
|
|
UniversalPrint(string(str), os);
|
|
}
|
|
}
|
|
inline void UniversalTersePrint(char* str, ::std::ostream* os) {
|
|
UniversalTersePrint(static_cast<const char*>(str), os);
|
|
}
|
|
|
|
// Prints a value using the type inferred by the compiler. The
|
|
// difference between this and UniversalTersePrint() is that for a
|
|
// (const) char pointer, this prints both the pointer and the
|
|
// NUL-terminated string.
|
|
template <typename T>
|
|
void UniversalPrint(const T& value, ::std::ostream* os) {
|
|
UniversalPrinter<T>::Print(value, os);
|
|
}
|
|
|
|
#if GTEST_HAS_TR1_TUPLE
|
|
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);
|
|
*os << ", ";
|
|
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*) {}
|
|
};
|
|
// We have to specialize the entire TuplePrefixPrinter<> class
|
|
// template here, even though the definition of
|
|
// TersePrintPrefixToStrings() is the same as the generic version, as
|
|
// Embarcadero (formerly CodeGear, formerly Borland) C++ doesn't
|
|
// support specializing a method template of a class template.
|
|
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>
|
|
static void TersePrintPrefixToStrings(const Tuple& t, Strings* strings) {
|
|
::std::stringstream ss;
|
|
UniversalTersePrint(::std::tr1::get<0>(t), &ss);
|
|
strings->push_back(ss.str());
|
|
}
|
|
};
|
|
|
|
// Helper function for printing a tuple. T must be instantiated with
|
|
// a tuple type.
|
|
template <typename T>
|
|
void PrintTupleTo(const T& t, ::std::ostream* os) {
|
|
*os << "(";
|
|
TuplePrefixPrinter< ::std::tr1::tuple_size<T>::value>::
|
|
PrintPrefixTo(t, os);
|
|
*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;
|
|
}
|
|
#endif // GTEST_HAS_TR1_TUPLE
|
|
|
|
} // namespace internal
|
|
|
|
template <typename T>
|
|
::std::string PrintToString(const T& value) {
|
|
::std::stringstream ss;
|
|
internal::UniversalTersePrint(value, &ss);
|
|
return ss.str();
|
|
}
|
|
|
|
} // namespace testing
|
|
|
|
#endif // GTEST_INCLUDE_GTEST_GTEST_PRINTERS_H_
|