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/********************* */
/** output.h
** Original author: mdeters
** Major contributors: none
** Minor contributors (to current version): none
** This file is part of the CVC4 prototype.
** Copyright (c) 2009, 2010 The Analysis of Computer Systems Group (ACSys)
** Courant Institute of Mathematical Sciences
** New York University
** See the file COPYING in the top-level source directory for licensing
** information.
**
** Output utility classes and functions.
**/
#ifndef __CVC4__OUTPUT_H
#define __CVC4__OUTPUT_H
#include "cvc4_config.h"
#include <iostream>
#include <string>
#include <cstdio>
#include <cstdarg>
#include <set>
#include "util/exception.h"
namespace CVC4 {
/**
* A utility class to provide (essentially) a "/dev/null" streambuf.
* If debugging support is compiled in, but debugging for
* e.g. "parser" is off, then Debug("parser") returns a stream
* attached to a null_streambuf instance so that output is directed to
* the bit bucket.
*/
class null_streambuf : public std::streambuf {
public:
/* Overriding overflow() just ensures that EOF isn't returned on the
* stream. Perhaps this is not so critical, but recommended; this
* way the output stream looks like it's functioning, in a non-error
* state. */
int overflow(int c) { return c; }
};/* class null_streambuf */
/** A null stream-buffer singleton */
extern null_streambuf null_sb;
/** A null output stream singleton */
extern std::ostream null_os CVC4_PUBLIC;
/** The debug output class */
class CVC4_PUBLIC DebugC {
std::set<std::string> d_tags;
std::ostream *d_os;
public:
DebugC(std::ostream* os) : d_os(os) {}
void operator()(const char* tag, const char*);
void operator()(const char* tag, std::string);
void operator()(std::string tag, const char*);
void operator()(std::string tag, std::string);
static void printf(const char* tag, const char* fmt, ...) __attribute__ ((format(printf, 2, 3)));
static void printf(std::string tag, const char* fmt, ...) __attribute__ ((format(printf, 2, 3)));
std::ostream& operator()(const char* tag) {
if(d_tags.find(std::string(tag)) != d_tags.end())
return *d_os;
else return null_os;
}
std::ostream& operator()(std::string tag) {
if(d_tags.find(tag) != d_tags.end())
return *d_os;
else return null_os;
}
/**
* The "Yeting option" - this allows use of Debug() without a tag
* for temporary (file-only) debugging.
*/
std::ostream& operator()();
void on (const char* tag) { d_tags.insert(std::string(tag)); }
void on (std::string tag) { d_tags.insert(tag); }
void off(const char* tag) { d_tags.erase (std::string(tag)); }
void off(std::string tag) { d_tags.erase (tag); }
void setStream(std::ostream& os) { d_os = &os; }
};/* class Debug */
/** The debug output singleton */
extern DebugC DebugOut CVC4_PUBLIC;
#ifdef CVC4_DEBUG
#define Debug DebugOut
#else
#define Debug if(0) DebugOut
#endif
/** The warning output class */
class CVC4_PUBLIC WarningC {
std::ostream *d_os;
public:
WarningC(std::ostream* os) : d_os(os) {}
void operator()(const char* s) { *d_os << s; }
void operator()(std::string s) { *d_os << s; }
void printf(const char* fmt, ...) __attribute__ ((format(printf, 2, 3)));
std::ostream& operator()() { return *d_os; }
void setStream(std::ostream& os) { d_os = &os; }
};/* class Warning */
/** The warning output singleton */
extern WarningC Warning CVC4_PUBLIC;
/** The message output class */
class CVC4_PUBLIC MessageC {
std::ostream *d_os;
public:
MessageC(std::ostream* os) : d_os(os) {}
void operator()(const char* s) { *d_os << s; }
void operator()(std::string s) { *d_os << s; }
void printf(const char* fmt, ...) __attribute__ ((format(printf, 2, 3)));
std::ostream& operator()() { return *d_os; }
void setStream(std::ostream& os) { d_os = &os; }
};/* class Message */
/** The message output singleton */
extern MessageC Message CVC4_PUBLIC;
/** The notice output class */
class CVC4_PUBLIC NoticeC {
std::ostream *d_os;
public:
NoticeC(std::ostream* os) : d_os(os) {}
void operator()(const char*);
void operator()(std::string);
void printf(const char* fmt, ...) __attribute__ ((format(printf, 2, 3)));
std::ostream& operator()() { return *d_os; }
void setStream(std::ostream& os) { d_os = &os; }
};/* class Notice */
/** The notice output singleton */
extern NoticeC Notice CVC4_PUBLIC;
/** The chat output class */
class CVC4_PUBLIC ChatC {
std::ostream *d_os;
public:
ChatC(std::ostream* os) : d_os(os) {}
void operator()(const char*);
void operator()(std::string);
void printf(const char* fmt, ...) __attribute__ ((format(printf, 2, 3)));
std::ostream& operator()() { return *d_os; }
void setStream(std::ostream& os) { d_os = &os; }
};/* class Chat */
/** The chat output singleton */
extern ChatC Chat CVC4_PUBLIC;
/** The trace output class */
class CVC4_PUBLIC TraceC {
std::ostream *d_os;
std::set<std::string> d_tags;
public:
TraceC(std::ostream* os) : d_os(os) {}
void operator()(const char* tag, const char*);
void operator()(const char* tag, std::string);
void operator()(std::string tag, const char*);
void operator()(std::string tag, std::string);
void printf(const char* tag, const char* fmt, ...) __attribute__ ((format(printf, 3, 4))) {
// chop off output after 1024 bytes
char buf[1024];
va_list vl;
va_start(vl, fmt);
vsnprintf(buf, sizeof(buf), fmt, vl);
va_end(vl);
*d_os << buf;
}
void printf(std::string tag, const char* fmt, ...) __attribute__ ((format(printf, 3, 4))) {
}
std::ostream& operator()(const char* tag) {
if(d_tags.find(tag) != d_tags.end())
return *d_os;
else return null_os;
}
std::ostream& operator()(std::string tag) {
if(d_tags.find(tag) != d_tags.end())
return *d_os;
else return null_os;
}
void on (const char* tag) { d_tags.insert(std::string(tag)); };
void on (std::string tag) { d_tags.insert(tag); };
void off(const char* tag) { d_tags.erase (std::string(tag)); };
void off(std::string tag) { d_tags.erase (tag); };
void setStream(std::ostream& os) { d_os = &os; }
};/* class Trace */
/** The trace output singleton */
extern TraceC Trace CVC4_PUBLIC;
}/* CVC4 namespace */
#endif /* __CVC4__OUTPUT_H */
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