/* -*- Mode: c; c-basic-offset: 2 -*-
 *
 * turtle_common.h - Turtle lexer/parser shared internals
 *
 * Copyright (C) 2003-2008, David Beckett http://www.dajobe.org/
 * Copyright (C) 2003-2004, University of Bristol, UK http://www.bristol.ac.uk/
 * 
 * This package is Free Software and part of Redland http://librdf.org/
 * 
 * It is licensed under the following three licenses as alternatives:
 *   1. GNU Lesser General Public License (LGPL) V2.1 or any newer version
 *   2. GNU General Public License (GPL) V2 or any newer version
 *   3. Apache License, V2.0 or any newer version
 * 
 * You may not use this file except in compliance with at least one of
 * the above three licenses.
 * 
 * See LICENSE.html or LICENSE.txt at the top of this package for the
 * complete terms and further detail along with the license texts for
 * the licenses in COPYING.LIB, COPYING and LICENSE-2.0.txt respectively.
 * 
 * 
 */

#ifndef TURTLE_COMMON_H
#define TURTLE_COMMON_H

#ifdef __cplusplus
extern "C" {
#endif


/* turtle_parser.y */
RAPTOR_INTERNAL_API int turtle_syntax_error(raptor_parser *rdf_parser, const char *message, ...) RAPTOR_PRINTF_FORMAT(2, 3);
RAPTOR_INTERNAL_API raptor_uri* turtle_qname_to_uri(raptor_parser *rdf_parser, unsigned char *name, size_t name_len);
RAPTOR_INTERNAL_API size_t raptor_turtle_expand_qname_escapes(unsigned char *name, size_t len, raptor_simple_message_handler error_handler, void *error_data);

/* turtle_lexer.l */
extern void turtle_token_free(raptor_world* world, int token, TURTLE_PARSER_STYPE *lval);


/*
 * Turtle parser object
 */
struct raptor_turtle_parser_s {
  /* buffer */
  char *buffer;

  /* buffer length */
  size_t buffer_length;
  
  raptor_namespace_stack namespaces; /* static */

  /* for lexer to store result in */
  TURTLE_PARSER_STYPE lval;

  /* STATIC lexer */
  yyscan_t scanner;

  int scanner_set;

  int lineno;
  int lineno_last_good;

  /* for the chunk parser, how much of the input has been consumed */
  size_t consumed;
  /* likewise, how much of the input has been successfully processed */
  size_t processed;
  /* indicates what can be processed at most */
  size_t consumable;
  /* real end-of-buffer indicator, as we kill the last line */
  size_t end_of_buffer;

  /* a sequence holding deferred statements */
  raptor_sequence *deferred;

  /* for creating long literals */
  raptor_stringbuffer* sb;

  /* count of errors in current parse */
  int error_count;

  /* TRIG graph name */
  raptor_term* graph_name;

  /* Allow TRIG extensions */
  int trig;

  /* Last run of many */
  int is_end;
};


#ifdef __cplusplus
}
#endif

#endif