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//
// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
#ifndef COMPILER_TRANSLATOR_INFOSINK_H_
#define COMPILER_TRANSLATOR_INFOSINK_H_
#include <math.h>
#include <stdlib.h>
#include "compiler/translator/Common.h"
namespace sh
{
// Returns the fractional part of the given floating-point number.
inline float fractionalPart(float f) {
float intPart = 0.0f;
return modff(f, &intPart);
}
//
// TPrefixType is used to centralize how info log messages start.
// See below.
//
enum TPrefixType {
EPrefixNone,
EPrefixWarning,
EPrefixError,
EPrefixInternalError,
EPrefixUnimplemented,
EPrefixNote
};
//
// Encapsulate info logs for all objects that have them.
//
// The methods are a general set of tools for getting a variety of
// messages and types inserted into the log.
//
class TInfoSinkBase {
public:
TInfoSinkBase() {}
template <typename T>
TInfoSinkBase& operator<<(const T& t) {
TPersistStringStream stream;
stream << t;
sink.append(stream.str());
return *this;
}
// Override << operator for specific types. It is faster to append strings
// and characters directly to the sink.
TInfoSinkBase& operator<<(char c) {
sink.append(1, c);
return *this;
}
TInfoSinkBase& operator<<(const char* str) {
sink.append(str);
return *this;
}
TInfoSinkBase& operator<<(const TPersistString& str) {
sink.append(str);
return *this;
}
TInfoSinkBase& operator<<(const TString& str) {
sink.append(str.c_str());
return *this;
}
// Make sure floats are written with correct precision.
TInfoSinkBase& operator<<(float f) {
// Make sure that at least one decimal point is written. If a number
// does not have a fractional part, the default precision format does
// not write the decimal portion which gets interpreted as integer by
// the compiler.
TPersistStringStream stream;
if (fractionalPart(f) == 0.0f) {
stream.precision(1);
stream << std::showpoint << std::fixed << f;
} else {
stream.unsetf(std::ios::fixed);
stream.unsetf(std::ios::scientific);
stream.precision(8);
stream << f;
}
sink.append(stream.str());
return *this;
}
// Write boolean values as their names instead of integral value.
TInfoSinkBase& operator<<(bool b) {
const char* str = b ? "true" : "false";
sink.append(str);
return *this;
}
void erase() { sink.clear(); }
int size() { return static_cast<int>(sink.size()); }
const TPersistString& str() const { return sink; }
const char* c_str() const { return sink.c_str(); }
void prefix(TPrefixType p);
void location(int file, int line);
void location(const TSourceLoc& loc);
void message(TPrefixType p, const TSourceLoc& loc, const char* m);
private:
TPersistString sink;
};
class TInfoSink {
public:
TInfoSinkBase info;
TInfoSinkBase debug;
TInfoSinkBase obj;
};
} // namespace sh
#endif // COMPILER_TRANSLATOR_INFOSINK_H_
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