src/Strings.h
author David Anderson <dvander@alliedmods.net>
Wed Aug 01 22:32:59 2012 -0700 (2012-08-01)
changeset 145 e9d804821c48
parent 86 32ad0523b309
child 161 b3f0aaee735a
permissions -rw-r--r--
Introduced type semantics, completely replacing tag semantics.
     1 /* vim: set ts=4 sw=4 tw=99 et:
     2  *
     3  * Copyright (C) 2012 David Anderson
     4  *
     5  * This file is part of JITCraft.
     6  *
     7  * JITCraft is free software: you can redistribute it and/or modify it under
     8  * the terms of the GNU General Public License as published by the Free
     9  * Software Foundation, either version 3 of the License, or (at your option)
    10  * any later version.
    11  * 
    12  * Foobar is distributed in the hope that it will be useful, but WITHOUT ANY
    13  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    14  * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
    15  *
    16  * You should have received a copy of the GNU General Public License along with
    17  * JITCraft. If not, see http://www.gnu.org/licenses/.
    18  */
    19 #ifndef _include_jitcraft_string_h_
    20 #define _include_jitcraft_string_h_
    21 
    22 #include "Heap.h"
    23 
    24 namespace ke {
    25 
    26 // A fixed-length string containing UTF-8 characters.
    27 class String : public Object
    28 {
    29     uint32 length_;
    30     
    31   public:
    32     static String *New(Zone *zone, const char *from, Heap::Tenure tenure = Heap::Tenure_Default);
    33     static String *New(Zone *zone, const char *from, size_t length, Heap::Tenure tenure = Heap::Tenure_Default);
    34 
    35     unsigned length() {
    36         return length_;
    37     }
    38     char *chars() {
    39         return reinterpret_cast<char *>(this + 1);
    40     }
    41 
    42     static size_t SizeFor(unsigned length) {
    43         return Align(sizeof(String) + sizeof(char) * (length + 1), kObjectAlignment);
    44     }
    45 
    46     static inline String *cast(Object *obj) {
    47         assert(!obj || obj->is(MapKind_String));
    48         return reinterpret_cast<String *>(obj);
    49     }
    50 };
    51 
    52 }
    53 
    54 #endif // _include_jitcraft_string_h_