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//
// Copyright (c) 2014 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.
// Error.h: Defines the egl::Error and gl::Error classes which encapsulate API errors
// and optional error messages.
#ifndef LIBANGLE_ERROR_H_
#define LIBANGLE_ERROR_H_
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include "angle_gl.h"
#include "common/angleutils.h"
#include "common/debug.h"
#include <memory>
#include <ostream>
#include <string>
namespace angle
{
template <typename ErrorT, typename ErrorBaseT, ErrorBaseT NoErrorVal, typename CodeT, CodeT EnumT>
class ErrorStreamBase : angle::NonCopyable
{
public:
ErrorStreamBase() : mID(EnumT) {}
ErrorStreamBase(GLuint id) : mID(id) {}
template <typename T>
ErrorStreamBase &operator<<(T value)
{
mErrorStream << value;
return *this;
}
operator ErrorT() { return ErrorT(EnumT, mID, mErrorStream.str()); }
private:
GLuint mID;
std::ostringstream mErrorStream;
};
} // namespace angle
namespace egl
{
class Error;
} // namespace egl
namespace egl
{
class ANGLE_NO_DISCARD Error final
{
public:
explicit inline Error(EGLint errorCode);
Error(EGLint errorCode, std::string &&message);
Error(EGLint errorCode, EGLint id, std::string &&message);
inline Error(const Error &other);
inline Error(Error &&other);
inline ~Error() = default;
inline Error &operator=(const Error &other);
inline Error &operator=(Error &&other);
inline EGLint getCode() const;
inline EGLint getID() const;
inline bool isError() const;
const std::string &getMessage() const;
static inline Error NoError();
private:
void createMessageString() const;
friend std::ostream &operator<<(std::ostream &os, const Error &err);
EGLint mCode;
EGLint mID;
mutable std::unique_ptr<std::string> mMessage;
};
namespace priv
{
template <EGLint EnumT>
using ErrorStream = angle::ErrorStreamBase<Error, EGLint, EGL_SUCCESS, EGLint, EnumT>;
} // namespace priv
using EglBadAccess = priv::ErrorStream<EGL_BAD_ACCESS>;
using EglBadAlloc = priv::ErrorStream<EGL_BAD_ALLOC>;
using EglBadAttribute = priv::ErrorStream<EGL_BAD_ATTRIBUTE>;
using EglBadConfig = priv::ErrorStream<EGL_BAD_CONFIG>;
using EglBadContext = priv::ErrorStream<EGL_BAD_CONTEXT>;
using EglBadCurrentSurface = priv::ErrorStream<EGL_BAD_CURRENT_SURFACE>;
using EglBadDevice = priv::ErrorStream<EGL_BAD_DEVICE_EXT>;
using EglBadDisplay = priv::ErrorStream<EGL_BAD_DISPLAY>;
using EglBadMatch = priv::ErrorStream<EGL_BAD_MATCH>;
using EglBadNativeWindow = priv::ErrorStream<EGL_BAD_NATIVE_WINDOW>;
using EglBadParameter = priv::ErrorStream<EGL_BAD_PARAMETER>;
using EglBadState = priv::ErrorStream<EGL_BAD_STATE_KHR>;
using EglBadStream = priv::ErrorStream<EGL_BAD_STREAM_KHR>;
using EglBadSurface = priv::ErrorStream<EGL_BAD_SURFACE>;
using EglContextLost = priv::ErrorStream<EGL_CONTEXT_LOST>;
using EglNotInitialized = priv::ErrorStream<EGL_NOT_INITIALIZED>;
inline Error NoError()
{
return Error::NoError();
}
} // namespace egl
#define ANGLE_CONCAT1(x, y) x##y
#define ANGLE_CONCAT2(x, y) ANGLE_CONCAT1(x, y)
#define ANGLE_LOCAL_VAR ANGLE_CONCAT2(_localVar, __LINE__)
#define ANGLE_TRY_TEMPLATE(EXPR, FUNC) \
do \
{ \
auto ANGLE_LOCAL_VAR = EXPR; \
if (ANGLE_UNLIKELY(IsError(ANGLE_LOCAL_VAR))) \
{ \
FUNC(ANGLE_LOCAL_VAR); \
} \
} while (0)
#define ANGLE_RETURN(X) return X;
#define ANGLE_TRY(EXPR) ANGLE_TRY_TEMPLATE(EXPR, ANGLE_RETURN)
// TODO(jmadill): Remove after EGL error refactor. http://anglebug.com/3041
#define ANGLE_SWALLOW_ERR(EXPR) \
do \
{ \
auto ANGLE_LOCAL_VAR = EXPR; \
if (ANGLE_UNLIKELY(IsError(ANGLE_LOCAL_VAR))) \
{ \
ERR() << "Unhandled internal error: " << ANGLE_LOCAL_VAR; \
} \
} while (0)
#undef ANGLE_LOCAL_VAR
#undef ANGLE_CONCAT2
#undef ANGLE_CONCAT1
#define ANGLE_CHECK(CONTEXT, EXPR, MESSAGE, ERROR) \
do \
{ \
if (ANGLE_UNLIKELY(!(EXPR))) \
{ \
CONTEXT->handleError(ERROR, MESSAGE, __FILE__, ANGLE_FUNCTION, __LINE__); \
return angle::Result::Stop; \
} \
} while (0)
namespace angle
{
// Result signals if calling code should continue running or early exit. A value of Stop can
// either indicate an Error or a non-Error early exit condition such as a detected no-op.
// Incomplete signals special cases that are neither success nor failure but require
// special attention.
enum class ANGLE_NO_DISCARD Result
{
Continue,
Stop,
Incomplete,
};
// TODO(jmadill): Remove this when refactor is complete. http://anglebug.com/3041
egl::Error ResultToEGL(Result result);
} // namespace angle
// TODO(jmadill): Remove this when refactor is complete. http://anglebug.com/3041
inline bool IsError(angle::Result result)
{
return result == angle::Result::Stop;
}
// TODO(jmadill): Remove this when refactor is complete. http://anglebug.com/3041
inline bool IsError(const egl::Error &err)
{
return err.isError();
}
#include "Error.inc"
#endif // LIBANGLE_ERROR_H_
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