Error.h

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Author : Stuart Morgan
Date : 2019-08-14 12:25:12
Hash : 9d737966
Message : Standardize copyright notices to project style For all "ANGLE Project" copyrights, standardize to the format specified by the style guide. Changes: - "Copyright (c)" and "Copyright(c)" changed to just "Copyright". - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1"). - Fixed a small number of files that had no copyright date using the initial commit year from the version control history. - Fixed one instance of copyright being "The ANGLE Project" rather than "The ANGLE Project Authors" These changes are applied both to the copyright of source file, and where applicable to copyright statements that are generated by templates. BUG=angleproject:3811 Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/libANGLE/Error.h

//
// Copyright 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_

kc3-lang/angle/src/libANGLE/Error.h

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kc3-lang/angle /src/libANGLE/Error.h