raze-gles/source/common/utility/name.h
2019-10-24 01:20:58 +02:00

125 lines
4.7 KiB
C++

/*
** name.h
**
**---------------------------------------------------------------------------
** Copyright 2005-2007 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 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 NAME_H
#define NAME_H
enum ENamedName
{
#define xx(n) NAME_##n,
#include "namedef.h"
#undef xx
};
class FString;
class FName
{
public:
FName() = default;
FName (const char *text) { Index = NameData.FindName (text, false); }
FName (const char *text, bool noCreate) { Index = NameData.FindName (text, noCreate); }
FName (const char *text, size_t textlen, bool noCreate) { Index = NameData.FindName (text, textlen, noCreate); }
FName (const FString &text);
FName (const FString &text, bool noCreate);
FName (const FName &other) = default;
FName (ENamedName index) { Index = index; }
// ~FName () {} // Names can be added but never removed.
int GetIndex() const { return Index; }
operator int() const { return Index; }
const char *GetChars() const { return NameData.NameArray[Index].Text; }
operator const char *() const { return NameData.NameArray[Index].Text; }
FName &operator = (const char *text) { Index = NameData.FindName (text, false); return *this; }
FName &operator = (const FString &text);
FName &operator = (const FName &other) = default;
FName &operator = (ENamedName index) { Index = index; return *this; }
int SetName (const char *text, bool noCreate=false) { return Index = NameData.FindName (text, noCreate); }
bool IsValidName() const { return (unsigned)Index < (unsigned)NameData.NumNames; }
// Note that the comparison operators compare the names' indices, not
// their text, so they cannot be used to do a lexicographical sort.
bool operator == (const FName &other) const { return Index == other.Index; }
bool operator != (const FName &other) const { return Index != other.Index; }
bool operator < (const FName &other) const { return Index < other.Index; }
bool operator <= (const FName &other) const { return Index <= other.Index; }
bool operator > (const FName &other) const { return Index > other.Index; }
bool operator >= (const FName &other) const { return Index >= other.Index; }
bool operator == (ENamedName index) const { return Index == index; }
bool operator != (ENamedName index) const { return Index != index; }
bool operator < (ENamedName index) const { return Index < index; }
bool operator <= (ENamedName index) const { return Index <= index; }
bool operator > (ENamedName index) const { return Index > index; }
bool operator >= (ENamedName index) const { return Index >= index; }
protected:
int Index;
struct NameEntry
{
char *Text;
unsigned int Hash;
int NextHash;
};
struct NameManager
{
// No constructor because we can't ensure that it actually gets
// called before any FNames are constructed during startup. This
// means this struct must only exist in the program's BSS section.
~NameManager();
enum { HASH_SIZE = 1024 };
struct NameBlock;
NameBlock *Blocks;
NameEntry *NameArray;
int NumNames, MaxNames;
int Buckets[HASH_SIZE];
int FindName (const char *text, bool noCreate);
int FindName (const char *text, size_t textlen, bool noCreate);
int AddName (const char *text, unsigned int hash, unsigned int bucket);
NameBlock *AddBlock (size_t len);
void InitBuckets ();
static bool Inited;
};
static NameManager NameData;
};
#endif