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//////////////////////////////////////////////////////////////////////////////
//Copyright 2008
// Andrew Gacek, Steven Holte, Gopalan Nadathur, Xiaochu Qi, Zach Snow
//////////////////////////////////////////////////////////////////////////////
// This file is part of Teyjus. //
// //
// Teyjus is free software: you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation, either version 3 of the License, or //
// (at your option) any later version. //
// //
// Teyjus 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 General Public License for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with Teyjus. If not, see <http://www.gnu.org/licenses/>. //
//////////////////////////////////////////////////////////////////////////////
/****************************************************************************/
/* */
/* File mcstring.h. The virtual machine encoding of string literals is */
/* contained in this module. Any change of such encoding format should be */
/* isolated here. */
/****************************************************************************/
#ifndef MCSTRING_H
#define MCSTRING_H
#include "mctypes.h"
/****************************************************************************/
/* Currently the string is encoded as one word being the length of the */
/* string followed by a list of characters in C string encoding (which is a */
/* sequence of chars ended with '\0'. */
/****************************************************************************/
typedef char MCSTR_Char;
typedef WordPtr MCSTR_Str;
//length of a given string; the string pointer is assumed to not be NULL
int MCSTR_strLength(MCSTR_Str str);
//number of words needed for a string with n characters
int MCSTR_numWords(int n);
//from machine string to c string
char* MCSTR_toCString(MCSTR_Str str);
//to string
void MCSTR_toString(MCSTR_Str loc, char* buf, int length);
//compare whether two string literals are the same
Boolean MCSTR_sameStrs(MCSTR_Str str1, MCSTR_Str str2);
//compare strings
int MCSTR_compareStrs(MCSTR_Str str1, MCSTR_Str str2);
//string concatenate (the new string is created at address started from loc)
void MCSTR_concat(MCSTR_Str loc, MCSTR_Str str1, MCSTR_Str str2);
//substring (the new string is created at address started from loc)
void MCSTR_subString(MCSTR_Str loc, MCSTR_Str str, int startPos, int length);
//chr
void MCSTR_chr(MCSTR_Str loc, int integer);
//ord
int MCSTR_ord(MCSTR_Str str);
//display on standard IO
void MCSTR_printStr(MCSTR_Str str);
#endif //MCSTRING_H
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