1 files changed, 134 insertions, 0 deletions
diff --git a/plugins/JSON/Source/JSONMemory.h b/plugins/JSON/Source/JSONMemory.h
new file mode 100644
index 0000000000..4797bd619f
--- /dev/null
+++ b/plugins/JSON/Source/JSONMemory.h
@@ -0,0 +1,134 @@
+#ifndef JSON_MEMORY_H
+#define JSON_MEMORY_H
+
+#include <cstdlib> //for malloc, realloc, and free
+#include <cstring> //for memmove
+#include "../JSONOptions.h"
+#include "JSONDebug.h"
+
+#if defined(JSON_DEBUG) || defined(JSON_SAFE)
+    #define JSON_FREE_PASSTYPE &
+#else
+    #define JSON_FREE_PASSTYPE
+#endif
+
+#ifdef JSON_MEMORY_CALLBACKS
+    class JSONMemory {
+    public:
+	   static void * json_malloc(size_t siz);
+	   static void * json_realloc(void * ptr, size_t siz);
+	   static void json_free(void * ptr);
+	   static void registerMemoryCallbacks(json_malloc_t mal, json_realloc_t real, json_free_t fre);
+    };
+
+    template <typename T> static inline T * json_malloc(size_t count){
+	   return (T *)JSONMemory::json_malloc(sizeof(T) * count);
+    }
+
+    template <typename T> static inline T * json_realloc(T * ptr, size_t count){
+	   return (T *)JSONMemory::json_realloc(ptr, sizeof(T) * count);
+    }
+
+    template <typename T> static inline void libjson_free(T * JSON_FREE_PASSTYPE ptr){
+	   JSONMemory::json_free(ptr);
+	   #if defined(JSON_DEBUG) || defined(JSON_SAFE)  //in debug or safe mode, set the pointer to 0 so that it can't be used again
+		  ptr = 0;
+	   #endif
+    }
+#else
+    template <typename T>
+    static inline T * json_malloc(size_t count){
+	   #ifdef JSON_DEBUG  //in debug mode, see if the malloc was successful
+		  void * result = malloc(count * sizeof(T));
+		  JSON_ASSERT(result, JSON_TEXT("out of memory"));
+		  #ifdef JSON_NULL_MEMORY
+			 memset(result, '\0', count  * sizeof(T));
+		  #endif
+		  return (T *)result;
+	   #else
+		  return (T *)malloc(count * sizeof(T));
+	   #endif
+    }
+
+    template <typename T>
+    static inline void libjson_free(T * JSON_FREE_PASSTYPE ptr){
+	   free(ptr);
+	   #if defined(JSON_DEBUG) || defined(JSON_SAFE)  //in debug or safe mode, set the pointer to 0 so that it can't be used again
+		  ptr = 0;
+	   #endif
+    }
+
+    template <typename T>
+    static inline T * json_realloc(T * ptr, size_t count){
+	   #ifdef JSON_DEBUG  //in debug mode, check the results of realloc to be sure it was successful
+		  void * result = realloc(ptr, count * sizeof(T));
+		  JSON_ASSERT(result, JSON_TEXT("out of memory"));
+		  #ifdef JSON_NULL_MEMORY
+			 memset(result, '\0', count  * sizeof(T));
+		  #endif
+		  return (T *)result;
+	   #else
+		  return (T *)realloc(ptr, count * sizeof(T));
+	   #endif
+    }
+#endif
+
+#ifdef JSON_MEMORY_MANAGE
+    #include <map>
+    class JSONNode;
+    struct auto_expand {
+	   auto_expand(void) : mymap(){}
+	   ~auto_expand(void){ purge(); }
+	   void purge(void);
+	   inline void clear(void){ purge(); mymap.clear(); }
+	   inline void * insert(void * ptr){ mymap[ptr] = ptr; return ptr; }
+	   inline void remove(void * ptr){ 
+		  std::map<void *, void *>::iterator i = mymap.find(ptr);
+		  JSON_ASSERT(i != mymap.end(), JSON_TEXT("Removing a non-managed item"));
+		  mymap.erase(i);
+	   }
+	   std::map<void *, void *> mymap;
+    };
+
+    struct auto_expand_node {
+	   auto_expand_node(void) : mymap(){}
+	   ~auto_expand_node(void){ purge(); }
+	   void purge(void);
+	   inline void clear(void){ purge(); mymap.clear(); }
+	   inline JSONNode * insert(JSONNode * ptr){ mymap[ptr] = ptr; return ptr; }
+	   inline void remove(void * ptr){ 
+		  std::map<void *, JSONNode *>::iterator i = mymap.find(ptr);
+		  if(i != mymap.end()) mymap.erase(i);
+	   }
+	   std::map<void *, JSONNode *> mymap;
+    };
+#endif
+
+//The C++ way, use an self-deleting pointer and let the optimizer decide when it gets destroyed
+template <typename T>
+class json_auto {
+    public:
+	   json_auto(void) : ptr(0){}
+	   json_auto(size_t count) : ptr(json_malloc<T>(count)){}
+	   ~json_auto(void){
+		  libjson_free<T>(ptr);
+	   }
+	   void set(T * p){
+		  ptr = p; 
+	   }
+	   T * ptr;
+    private:
+	   json_auto(const json_auto &);
+	   json_auto & operator =(const json_auto &);
+};
+
+//Clears a string, if required, frees the memory
+static inline void clearString(json_string & str){
+    #ifdef JSON_LESS_MEMORY
+	   json_string().swap(str);
+    #else
+	   str.clear();
+    #endif
+}
+
+#endif