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/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#ifndef SL_PP_TOKEN_UTIL_H
#define SL_PP_TOKEN_UTIL_H
#include <assert.h>
#include <stdlib.h>
#include "sl_pp_token.h"
struct sl_pp_context;
/*
* A token buffer allows one to get and unget a token
* from a preprocessor context.
*/
struct sl_pp_token_buffer {
struct sl_pp_context *context;
unsigned int size;
unsigned int capacity;
struct sl_pp_token_info *tokens;
};
int
sl_pp_token_buffer_init(struct sl_pp_token_buffer *buffer,
struct sl_pp_context *context);
void
sl_pp_token_buffer_destroy(struct sl_pp_token_buffer *buffer);
int
sl_pp_token_buffer_get(struct sl_pp_token_buffer *buffer,
struct sl_pp_token_info *out);
void
sl_pp_token_buffer_unget(struct sl_pp_token_buffer *buffer,
const struct sl_pp_token_info *in);
int
sl_pp_token_buffer_skip_white(struct sl_pp_token_buffer *buffer,
struct sl_pp_token_info *out);
/*
* A token peek allows one to get a number of tokens from a buffer
* and then either commit the operation or abort it,
* effectively ungetting the peeked tokens.
*/
struct sl_pp_token_peek {
struct sl_pp_token_buffer *buffer;
unsigned int size;
unsigned int capacity;
struct sl_pp_token_info *tokens;
};
int
sl_pp_token_peek_init(struct sl_pp_token_peek *peek,
struct sl_pp_token_buffer *buffer);
void
sl_pp_token_peek_destroy(struct sl_pp_token_peek *peek);
int
sl_pp_token_peek_get(struct sl_pp_token_peek *peek,
struct sl_pp_token_info *out);
void
sl_pp_token_peek_commit(struct sl_pp_token_peek *peek);
int
sl_pp_token_peek_to_buffer(const struct sl_pp_token_peek *peek,
struct sl_pp_token_buffer *buffer);
int
sl_pp_token_peek_skip_white(struct sl_pp_token_peek *peek,
struct sl_pp_token_info *out);
#endif /* SL_PP_TOKEN_UTIL_H */
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