glfw/src/error.c

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//========================================================================
// GLFW - An OpenGL library
// Platform: All
// API version: 3.0
// WWW: http://www.glfw.org/
//------------------------------------------------------------------------
// Copyright (c) 2008-2010 Camilla Berglund <elmindreda@elmindreda.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#include "internal.h"
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
//========================================================================
// The current error value and callback
// These are not in _glfwLibrary since they need to be initialized and
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// accessible before glfwInit so it can report errors
//========================================================================
static int _glfwError = GLFW_NO_ERROR;
static GLFWerrorfun _glfwErrorCallback = NULL;
//========================================================================
// Sets the current error value
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// This function may be called without GLFW having been initialized
//========================================================================
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void _glfwSetError(int error, const char* description)
{
if (_glfwErrorCallback)
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{
if (!description)
description = glfwErrorString(error);
_glfwErrorCallback(error, description);
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}
else
_glfwError = error;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW public API //////
//////////////////////////////////////////////////////////////////////////
//========================================================================
// Returns the current error value
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// This function may be called without GLFW having been initialized
//========================================================================
GLFWAPI int glfwGetError(void)
{
int error = _glfwError;
_glfwError = GLFW_NO_ERROR;
return error;
}
//========================================================================
// Returns a string representation of the specified error value
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// This function may be called without GLFW having been initialized
//========================================================================
GLFWAPI const char* glfwErrorString(int error)
{
switch (error)
{
case GLFW_NO_ERROR:
return "No error";
case GLFW_NOT_INITIALIZED:
return "The GLFW library is not initialized";
case GLFW_NO_CURRENT_WINDOW:
return "There is no current GLFW window";
case GLFW_INVALID_ENUM:
return "Invalid argument for enum parameter";
case GLFW_INVALID_VALUE:
return "Invalid value for parameter";
case GLFW_OUT_OF_MEMORY:
return "Out of memory";
case GLFW_OPENGL_UNAVAILABLE:
return "OpenGL is not available on this machine";
case GLFW_VERSION_UNAVAILABLE:
return "The requested OpenGL version is unavailable";
case GLFW_PLATFORM_ERROR:
return "A platform-specific error occurred";
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case GLFW_WINDOW_NOT_ACTIVE:
return "The specified window is not active";
}
return "ERROR: UNKNOWN ERROR TOKEN PASSED TO glfwErrorString";
}
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//========================================================================
// Sets the callback function for GLFW errors
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// This function may be called without GLFW having been initialized
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//========================================================================
GLFWAPI void glfwSetErrorCallback(GLFWerrorfun cbfun)
{
_glfwErrorCallback = cbfun;
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}