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/*************************************************************************/
/* string_db.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#ifndef STRING_DB_H
#define STRING_DB_H
#include "hash_map.h"
#include "ustring.h"
#include "safe_refcount.h"
#include "os/mutex.h"
/**
@author Juan Linietsky <reduzio@gmail.com>
*/
struct StaticCString {
const char *ptr;
static StaticCString create(const char *p_ptr);
};
class StringName {
enum {
STRING_TABLE_BITS=12,
STRING_TABLE_LEN=1<<STRING_TABLE_BITS,
STRING_TABLE_MASK=STRING_TABLE_LEN-1
};
struct _Data {
SafeRefCount refcount;
const char* cname;
String name;
String get_name() const { return cname?String(cname):name; }
int idx;
uint32_t hash;
_Data *prev;
_Data *next;
_Data() { cname=NULL; next=prev=NULL; hash=0; }
};
static _Data *_table[STRING_TABLE_LEN];
_Data *_data;
union _HashUnion {
_Data *ptr;
uint32_t hash;
};
void unref();
friend void register_core_types();
friend void unregister_core_types();
static Mutex *lock;
static void setup();
static void cleanup();
static bool configured;
StringName(_Data *p_data) { _data=p_data; }
public:
operator const void*() const { return (_data && (_data->cname || !_data->name.empty()))?(void*)1:0; }
bool operator==(const String& p_name) const;
bool operator==(const char* p_name) const;
bool operator!=(const String& p_name) const;
_FORCE_INLINE_ bool operator<(const StringName& p_name) const {
return _data<p_name._data;
}
_FORCE_INLINE_ bool operator==(const StringName& p_name) const {
// the real magic of all this mess happens here.
// this is why path comparisons are very fast
return _data==p_name._data;
}
_FORCE_INLINE_ uint32_t hash() const {
if (_data)
return _data->hash;
else
return 0;
}
bool operator!=(const StringName& p_name) const;
_FORCE_INLINE_ operator String() const {
if (_data) {
if (_data->cname )
return String(_data->cname);
else
return _data->name;
}
return String();
}
static StringName search(const char *p_name);
static StringName search(const CharType *p_name);
static StringName search(const String &p_name);
struct AlphCompare {
_FORCE_INLINE_ bool operator()(const StringName& l,const StringName& r) const {
return l.operator String() < r.operator String();
}
};
void operator=(const StringName& p_name);
StringName(const char *p_name);
StringName(const StringName& p_name);
StringName(const String& p_name);
StringName(const StaticCString& p_static_string);
StringName();
~StringName();
};
struct StringNameHasher {
static _FORCE_INLINE_ uint32_t hash(const StringName &p_string) { return p_string.hash(); }
};
StringName _scs_create(const char *p_chr);
//#define _SCS(m_cstr) (m_cstr[0]?StringName(StaticCString::create(m_cstr)):StringName())
#define _SCS(m_cstr) _scs_create(m_cstr)
#endif
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