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/*
Title: polystring.h - String functions and types
Copyright (c) 2006 David C.J. Matthews
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef POLYSTRING_H
#define POLYSTRING_H
#include "globals.h" // For PolyObject
class SaveVecEntry;
typedef SaveVecEntry *Handle;
class TaskData;
// A string object. N.B. Poly strings can be either a single tagged integer or
// a pointer to this.
class PolyStringObject: public PolyObject {
public:
POLYUNSIGNED length;
char chars[1];
};
//typedef PolyStringObject STRING, *pstring;
extern PolyWord EmptyString(void);
/* PolyStringObject functions */
extern PolyWord Buffer_to_Poly(TaskData *mdTaskData, const char *buffer, unsigned length);
extern PolyWord C_string_to_Poly(TaskData *mdTaskData, const char *buffer);
extern POLYUNSIGNED Poly_string_to_C(PolyWord ps, char *buff, POLYUNSIGNED bufflen);
extern char *Poly_string_to_C_alloc(PolyWord ps);
#ifdef UNICODE
#ifdef HAVE_TCHAR_H
#include <tchar.h>
#else
#define WCHAR short
#endif
extern PolyWord C_string_to_Poly(const WCHAR *buffer);
extern POLYUNSIGNED Poly_string_to_C(PolyWord ps, WCHAR *buff, POLYUNSIGNED bufflen);
extern WCHAR *Poly_string_to_U_alloc(PolyWord ps);
// Poly_string_to_T_alloc returns a Unicode string in Unicode and char string otherwise.
#define Poly_string_to_T_alloc Poly_string_to_U_alloc
#else
#define Poly_string_to_T_alloc Poly_string_to_C_alloc
#endif
Handle convert_string_list(TaskData *mdTaskData, int count, char **strings);
extern char **stringListToVector(Handle list);
extern void freeStringVector(char **vec);
extern void print_string(PolyWord s);
// These should no longer be used in the RTS except internally.
// They are currently used by the ML code during bootstrapping.
extern Handle strconcatc(TaskData *mdTaskData, Handle x, Handle y);
Handle string_length_c(TaskData *mdTaskData, Handle string);
#define DEREFSTRINGHANDLE(_x) ((PolyStringObject *)(_x)->WordP())
extern Handle compareStrings(TaskData *mdTaskData, Handle y, Handle x);
extern Handle testStringEqual(TaskData *mdTaskData, Handle y, Handle x);
extern Handle testStringNotEqual(TaskData *mdTaskData, Handle y, Handle x);
extern Handle testStringGreater(TaskData *mdTaskData, Handle y, Handle x);
extern Handle testStringLess(TaskData *mdTaskData, Handle y, Handle x);
extern Handle testStringGreaterOrEqual(TaskData *mdTaskData, Handle y, Handle x);
extern Handle testStringLessOrEqual(TaskData *mdTaskData, Handle y, Handle x);
#endif /* POLYSTRING_H */
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