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/*
* Copyright (C) 2012 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef PrintStream_h
#define PrintStream_h
#include "wtf/Allocator.h"
#include "wtf/Compiler.h"
#include "wtf/Noncopyable.h"
#include "wtf/StdLibExtras.h"
#include "wtf/WTFExport.h"
#include <stdarg.h>
namespace WTF {
class CString;
class String;
class WTF_EXPORT PrintStream {
USING_FAST_MALLOC(PrintStream);
WTF_MAKE_NONCOPYABLE(PrintStream);
public:
PrintStream();
virtual ~PrintStream();
PRINTF_FORMAT(2, 3) void printf(const char* format, ...);
PRINTF_FORMAT(2, 0) virtual void vprintf(const char* format, va_list) = 0;
// Typically a no-op for many subclasses of PrintStream, this is a hint that
// the implementation should flush its buffers if it had not done so already.
virtual void flush();
template <typename T>
void print(const T& value) {
printInternal(*this, value);
}
template <typename T1, typename... RemainingTypes>
void print(const T1& value1, const RemainingTypes&... values) {
print(value1);
print(values...);
}
};
WTF_EXPORT void printInternal(PrintStream&, const char*);
WTF_EXPORT void printInternal(PrintStream&, const CString&);
WTF_EXPORT void printInternal(PrintStream&, const String&);
inline void printInternal(PrintStream& out, char* value) {
printInternal(out, static_cast<const char*>(value));
}
inline void printInternal(PrintStream& out, CString& value) {
printInternal(out, static_cast<const CString&>(value));
}
inline void printInternal(PrintStream& out, String& value) {
printInternal(out, static_cast<const String&>(value));
}
WTF_EXPORT void printInternal(PrintStream&, bool);
WTF_EXPORT void printInternal(PrintStream&, int);
WTF_EXPORT void printInternal(PrintStream&, unsigned);
WTF_EXPORT void printInternal(PrintStream&, long);
WTF_EXPORT void printInternal(PrintStream&, unsigned long);
WTF_EXPORT void printInternal(PrintStream&, long long);
WTF_EXPORT void printInternal(PrintStream&, unsigned long long);
WTF_EXPORT void printInternal(PrintStream&, float);
WTF_EXPORT void printInternal(PrintStream&, double);
template <typename T>
void printInternal(PrintStream& out, const T& value) {
value.dump(out);
}
#define MAKE_PRINT_ADAPTOR(Name, Type, function) \
class Name final { \
STACK_ALLOCATED(); \
\
public: \
Name(const Type& value) : m_value(value) {} \
void dump(PrintStream& out) const { function(out, m_value); } \
\
private: \
Type m_value; \
}
#define MAKE_PRINT_METHOD_ADAPTOR(Name, Type, method) \
class Name final { \
STACK_ALLOCATED(); \
\
public: \
Name(const Type& value) : m_value(value) {} \
void dump(PrintStream& out) const { m_value.method(out); } \
\
private: \
const Type& m_value; \
}
#define MAKE_PRINT_METHOD(Type, dumpMethod, method) \
MAKE_PRINT_METHOD_ADAPTOR(DumperFor_##method, Type, dumpMethod); \
DumperFor_##method method() const { return DumperFor_##method(*this); }
// Use an adaptor-based dumper for characters to avoid situations where
// you've "compressed" an integer to a character and it ends up printing
// as ASCII when you wanted it to print as a number.
void dumpCharacter(PrintStream&, char);
MAKE_PRINT_ADAPTOR(CharacterDump, char, dumpCharacter);
} // namespace WTF
using WTF::CharacterDump;
using WTF::PrintStream;
#endif // PrintStream_h
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