X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Fyoink;a=blobdiff_plain;f=src%2FMoof%2Fyajl%2Fsrc%2Fyajl_bytestack.h;fp=src%2FMoof%2Fyajl%2Fsrc%2Fyajl_bytestack.h;h=bb315182604f826df544f19d1476054d76b9c0e9;hp=0000000000000000000000000000000000000000;hb=96dd0815b98cf9459c8dd7a8009aabb6f8051e9e;hpb=d50942708db230dc5c43b8df89ede45525e1c394 diff --git a/src/Moof/yajl/src/yajl_bytestack.h b/src/Moof/yajl/src/yajl_bytestack.h new file mode 100644 index 0000000..bb31518 --- /dev/null +++ b/src/Moof/yajl/src/yajl_bytestack.h @@ -0,0 +1,85 @@ +/* + * Copyright 2009, Lloyd Hilaiel. + * + * 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. Neither the name of Lloyd Hilaiel nor the names of its + * contributors may 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. + */ + +/* + * A header only implementation of a simple stack of bytes, used in YAJL + * to maintain parse state. + */ + +#ifndef __YAJL_BYTESTACK_H__ +#define __YAJL_BYTESTACK_H__ + +#include "yajl/yajl_common.h" + +#define YAJL_BS_INC 128 + +typedef struct yajl_bytestack_t +{ + unsigned char * stack; + unsigned int size; + unsigned int used; + yajl_alloc_funcs * yaf; +} yajl_bytestack; + +/* initialize a bytestack */ +#define yajl_bs_init(obs, _yaf) { \ + (obs).stack = NULL; \ + (obs).size = 0; \ + (obs).used = 0; \ + (obs).yaf = (_yaf); \ + } \ + + +/* initialize a bytestack */ +#define yajl_bs_free(obs) \ + if ((obs).stack) (obs).yaf->free((obs).yaf->ctx, (obs).stack); + +#define yajl_bs_current(obs) \ + (assert((obs).used > 0), (obs).stack[(obs).used - 1]) + +#define yajl_bs_push(obs, byte) { \ + if (((obs).size - (obs).used) == 0) { \ + (obs).size += YAJL_BS_INC; \ + (obs).stack = (obs).yaf->realloc((obs).yaf->ctx,\ + (void *) (obs).stack, (obs).size);\ + } \ + (obs).stack[((obs).used)++] = (byte); \ +} + +/* removes the top item of the stack, returns nothing */ +#define yajl_bs_pop(obs) { ((obs).used)--; } + +#define yajl_bs_set(obs, byte) \ + (obs).stack[((obs).used) - 1] = (byte); + + +#endif