Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

113 lines (91 sloc) 2.588 kb
#ifndef _llvmd_gen_logger_h_
#define _llvmd_gen_logger_h_
#include <iosfwd>
namespace llvm {
class Type;
class Value;
}
#ifndef IS_PRINTF
# ifdef __GNUC__
# define IS_PRINTF(FMTARG) __attribute((__format__ (__printf__, (FMTARG), (FMTARG)+1) ))
# else
# define IS_PRINTF(FMTARG)
# endif
#endif
struct Loc;
class Stream {
std::ostream* OS;
public:
Stream() : OS(0) {}
Stream(std::ostream* S) : OS(S) {}
Stream(std::ostream& S) : OS(&S) {}
/*
Stream operator << (std::ios_base &(*Func)(std::ios_base&)) {
if (OS) *OS << Func;
return *this;
}
*/
Stream operator << (std::ostream &(*Func)(std::ostream&)) {
if (OS) Func(*OS);
return *this;
}
template<typename Ty>
Stream& operator << (const Ty& Thing) {
if (OS)
Writer<Ty, sizeof(sfinae_bait(Thing))>::write(*OS, Thing);
return *this;
}
private:
// Implementation details to treat llvm::Value, llvm::Type and their
// subclasses specially (to pretty-print types).
static void writeType(std::ostream& OS, const llvm::Type& Ty);
static void writeValue(std::ostream& OS, const llvm::Value& Ty);
template<typename Ty, int N> friend struct Writer;
// error: function template partial specialization is not allowed
// So I guess type partial specialization + member function will have to do...
template<typename Ty, int N>
struct Writer {
static void write(std::ostream& OS, const Ty& Thing) {
OS << Thing;
}
};
template<typename Ty>
struct Writer<Ty, 1> {
static void write(std::ostream& OS, const llvm::Type& Thing) {
Stream::writeType(OS, Thing);
}
static void write(std::ostream& OS, const llvm::Value& Thing) {
Stream::writeValue(OS, Thing);
}
};
// NOT IMPLEMENTED
char sfinae_bait(const llvm::Type&);
char sfinae_bait(const llvm::Value&);
short sfinae_bait(...);
};
namespace Logger
{
void indent();
void undent();
Stream cout();
void println(const char* fmt, ...) IS_PRINTF(1);
void print(const char* fmt, ...) IS_PRINTF(1);
void enable();
void disable();
bool enabled();
void attention(Loc loc, const char* fmt, ...) IS_PRINTF(2);
struct LoggerScope
{
LoggerScope()
{
Logger::indent();
}
~LoggerScope()
{
Logger::undent();
}
};
}
#define LOG_SCOPE Logger::LoggerScope _logscope;
#define IF_LOG if (Logger::enabled())
#endif
Jump to Line
Something went wrong with that request. Please try again.