liangchengyou / wow_english

  /******************************************************************************

   * Spine Runtimes License Agreement
   * Last updated May 1, 2019. Replaces all prior versions.

   *

   * Copyright (c) 2013-2019, Esoteric Software LLC

   *

   * Integration of the Spine Runtimes into software or otherwise creating
   * derivative works of the Spine Runtimes is permitted under the terms and
   * conditions of Section 2 of the Spine Editor License Agreement:
   * http://esotericsoftware.com/spine-editor-license

   *

   * Otherwise, it is permitted to integrate the Spine Runtimes into software
   * or otherwise create derivative works of the Spine Runtimes (collectively,
   * "Products"), provided that each user of the Products must obtain their own
   * Spine Editor license and redistribution of the Products in any form must
   * include this license and copyright notice.
   *
   * THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY EXPRESS
   * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
   * NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, BUSINESS
   * INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
   * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

   *****************************************************************************/
  

  #ifndef Spine_Extension_h
  #define Spine_Extension_h

  
  #include <stdlib.h>

  #include <spine/dll.h>

  #define SP_UNUSED(x) (void)(x)

  namespace spine {
  class String;

  class SP_API SpineExtension {
  public:
  	template<typename T>
  	static T *alloc(size_t num, const char *file, int line) {
  		return (T *) getInstance()->_alloc(sizeof(T) * num, file, line);
  	}

  	template<typename T>
  	static T *calloc(size_t num, const char *file, int line) {
  		return (T *) getInstance()->_calloc(sizeof(T) * num, file, line);
  	}

  	template<typename T>
  	static T *realloc(T *ptr, size_t num, const char *file, int line) {
  		return (T *) getInstance()->_realloc(ptr, sizeof(T) * num, file, line);

  	}

  	template<typename T>
  	static void free(T *ptr, const char *file, int line) {
  		getInstance()->_free((void *) ptr, file, line);
  	}

  	static char *readFile(const String &path, int *length) {
  		return getInstance()->_readFile(path, length);
  	}

  	static void setInstance(SpineExtension *inSpineExtension);

  	static SpineExtension *getInstance();

  	virtual ~SpineExtension();

  	/// Implement this function to use your own memory allocator
  	virtual void *_alloc(size_t size, const char *file, int line) = 0;

  	virtual void *_calloc(size_t size, const char *file, int line) = 0;

  	virtual void *_realloc(void *ptr, size_t size, const char *file, int line) = 0;

  	/// If you provide a spineAllocFunc, you should also provide a spineFreeFunc
  	virtual void _free(void *mem, const char *file, int line) = 0;

  	virtual char *_readFile(const String &path, int *length) = 0;

  protected:
  	SpineExtension();

  private:
  	static SpineExtension *_instance;
  };

  class SP_API DefaultSpineExtension : public SpineExtension {
  public:
  	DefaultSpineExtension();

  	virtual ~DefaultSpineExtension();

  protected:
  	virtual void *_alloc(size_t size, const char *file, int line);

  	virtual void *_calloc(size_t size, const char *file, int line);

  	virtual void *_realloc(void *ptr, size_t size, const char *file, int line);

  	virtual void _free(void *mem, const char *file, int line);

  	virtual char *_readFile(const String &path, int *length);
  };

  // This function is to be implemented by engine specific runtimes to provide
  // the default extension for that engine. It is called the first time
  // SpineExtension::getInstance() is called, when no instance has been set
  // yet.
  extern SpineExtension *getDefaultExtension();

  }

  #endif /* Spine_Extension_h */