/************************************************************************** * * 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 */